{"id":21505,"date":"2026-02-01T21:20:43","date_gmt":"2026-02-01T13:20:43","guid":{"rendered":"https:\/\/viox.com\/?p=21505"},"modified":"2026-02-01T21:20:46","modified_gmt":"2026-02-01T13:20:46","slug":"magnetic-blowout-vs-vacuum-vs-sf6-arc-extinction","status":"publish","type":"post","link":"https:\/\/test.viox.com\/vi\/magnetic-blowout-vs-vacuum-vs-sf6-arc-extinction\/","title":{"rendered":"D\u1eadp H\u1ed3 Quang T\u1eeb T\u00ednh so v\u1edbi Ch\u00e2n Kh\u00f4ng so v\u1edbi SF6: Gi\u1ea3i Th\u00edch V\u1eadt L\u00fd v\u1ec1 D\u1eadp T\u1eaft H\u1ed3 Quang"},"content":{"rendered":"<div class=\"product-intro\">\n<h2>Tr\u1ea3 l\u1eddi tr\u1ef1c ti\u1ebfp<\/h2>\n<p>D\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng, ch\u00e2n kh\u00f4ng v\u00e0 SF6 \u0111\u1ea1i di\u1ec7n cho ba ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau v\u1ec1 c\u01a1 b\u1ea3n \u0111\u1ec3 d\u1eadp t\u1eaft h\u1ed3 quang trong m\u00e1y c\u1eaft. D\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng s\u1eed d\u1ee5ng l\u1ef1c \u0111i\u1ec7n t\u1eeb \u0111\u1ec3 k\u00e9o d\u00e0i v\u00e0 l\u00e0m m\u00e1t h\u1ed3 quang trong kh\u00f4ng kh\u00ed (th\u01b0\u1eddng th\u1ea5y trong MCCB v\u00e0 ACB l\u00ean \u0111\u1ebfn 6.3kA), c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n m\u00f4i tr\u01b0\u1eddng ion h\u00f3a \u0111\u1ec3 d\u1eadp t\u1eaft nhanh ch\u00f3ng trong 3-8ms (l\u00fd t\u01b0\u1edfng cho h\u1ec7 th\u1ed1ng 3-40.5kV), trong khi kh\u00ed SF6 t\u1eadn d\u1ee5ng \u0111\u1ed9 \u00e2m \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i \u0111\u1ec3 h\u1ea5p th\u1ee5 c\u00e1c electron t\u1ef1 do v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng c\u1eaft v\u01b0\u1ee3t qu\u00e1 100kA trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n \u00e1p cao l\u00ean \u0111\u1ebfn 800kV. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c c\u00f4ng ngh\u1ec7 n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o c\u1ea5p \u0111i\u1ec7n \u00e1p, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng s\u1ef1 c\u1ed1, c\u00e1c y\u1ebfu t\u1ed1 m\u00f4i tr\u01b0\u1eddng v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu\u2014v\u1edbi d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n \u00e1p th\u1ea5p, ch\u00e2n kh\u00f4ng d\u1eabn \u0111\u1ea7u th\u1ecb tr\u01b0\u1eddng \u0111i\u1ec7n \u00e1p trung b\u00ecnh v\u00e0 SF6 v\u1eabn c\u1ea7n thi\u1ebft cho truy\u1ec1n t\u1ea3i \u0111i\u1ec7n \u00e1p si\u00eau cao m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng.<\/p>\n<h2>Nh\u1eefng \u0111i\u1ec3m ch\u00ednh<\/h2>\n<ul>\n<li><strong>H\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng<\/strong> s\u1eed d\u1ee5ng l\u1ef1c Lorentz (F = I \u00d7 B) \u0111\u1ec3 \u0111\u1ea9y h\u1ed3 quang v\u00e0o c\u00e1c t\u1ea5m chia h\u1ed3 quang, \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p h\u1ed3 quang 80-200V trong c\u00e1c thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn ph\u00f9 h\u1ee3p cho MCCB v\u00e0 ACB 16-1600A<\/li>\n<li><strong>Aptomat ch\u00e2n kh\u00f4ng<\/strong> khai th\u00e1c s\u1ef1 v\u1eafng m\u1eb7t c\u1ee7a m\u00f4i tr\u01b0\u1eddng ion h\u00f3a \u0111\u1ec3 d\u1eadp t\u1eaft h\u1ed3 quang trong v\u00f2ng micro gi\u00e2y t\u1ea1i \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng, mang l\u1ea1i ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec cho h\u01a1n 10.000 chu k\u1ef3 c\u01a1 h\u1ecdc<\/li>\n<li><strong>C\u00f4ng ngh\u1ec7 SF6<\/strong> cung c\u1ea5p \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i g\u1ea5p 2-3 l\u1ea7n so v\u1edbi kh\u00f4ng kh\u00ed v\u00e0 kh\u1ea3 n\u0103ng d\u1eadp h\u1ed3 quang v\u01b0\u1ee3t tr\u1ed9i th\u00f4ng qua b\u1eaft gi\u1eef electron, cho ph\u00e9p c\u1eaft d\u00f2ng s\u1ef1 c\u1ed1 v\u01b0\u1ee3t qu\u00e1 63kA \u1edf \u0111i\u1ec7n \u00e1p truy\u1ec1n t\u1ea3i<\/li>\n<li><strong>Ti\u00eau ch\u00ed l\u1ef1a ch\u1ecdn<\/strong> ph\u1ea3i c\u00e2n b\u1eb1ng kh\u1ea3 n\u0103ng c\u1eaft (\u0111\u1ecbnh m\u1ee9c kA), c\u1ea5p \u0111i\u1ec7n \u00e1p, tu\u1ed5i th\u1ecd ti\u1ebfp \u0111i\u1ec3m d\u1ef1 ki\u1ebfn, t\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng (SF6 c\u00f3 GWP CO2 g\u1ea5p 23.900 l\u1ea7n) v\u00e0 y\u00eau c\u1ea7u b\u1ea3o tr\u00ec<\/li>\n<li><strong>C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn k\u1ebft h\u1ee3p<\/strong> \u0111ang n\u1ed5i l\u00ean, bao g\u1ed3m b\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng v\u1edbi h\u1ed7 tr\u1ee3 t\u1eeb t\u00ednh cho c\u00e1c \u1ee9ng d\u1ee5ng DC v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf SF6 s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p fluoronitrile \u0111\u1ec3 gi\u1ea3m ph\u00e1t th\u1ea3i kh\u00ed nh\u00e0 k\u00ednh<\/li>\n<\/ul>\n<hr>\n<h2>Th\u00e1ch th\u1ee9c D\u1eadp H\u1ed3 quang: T\u1ea1i sao C\u00f4ng ngh\u1ec7 l\u1ea1i Quan tr\u1ecdng<\/h2>\n<p>Khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u1ee7a m\u00e1y c\u1eaft t\u00e1ch ra d\u01b0\u1edbi t\u1ea3i, m\u1ed9t h\u1ed3 quang \u0111i\u1ec7n h\u00ecnh th\u00e0nh\u2014m\u1ed9t k\u00eanh plasma nhi\u1ec7t \u0111\u1ed9 cao (15.000-20.000\u00b0C) c\u1ed1 g\u1eafng duy tr\u00ec d\u00f2ng \u0111i\u1ec7n m\u1eb7c d\u00f9 c\u00e1c ti\u1ebfp \u0111i\u1ec3m v\u1eadt l\u00fd \u0111\u00e3 t\u00e1ch ra. H\u1ed3 quang n\u00e0y \u0111\u1ea1i di\u1ec7n cho m\u1ed9t trong nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng ph\u00e1 ho\u1ea1i nh\u1ea5t trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n, c\u00f3 kh\u1ea3 n\u0103ng l\u00e0m bay h\u01a1i c\u00e1c ti\u1ebfp \u0111i\u1ec3m b\u1eb1ng \u0111\u1ed3ng, g\u00e2y ra h\u1ecfa ho\u1ea1n v\u00e0 g\u00e2y ra s\u1ef1 c\u1ed1 thi\u1ebft b\u1ecb nghi\u00eam tr\u1ecdng n\u1ebfu kh\u00f4ng \u0111\u01b0\u1ee3c d\u1eadp t\u1eaft trong v\u00f2ng mili gi\u00e2y.<\/p>\n<p>Th\u00e1ch th\u1ee9c c\u01a1 b\u1ea3n n\u1eb1m \u1edf b\u1ea3n ch\u1ea5t t\u1ef1 duy tr\u00ec c\u1ee7a h\u1ed3 quang. Plasma ch\u1ee9a c\u00e1c electron t\u1ef1 do v\u00e0 c\u00e1c h\u1ea1t ion h\u00f3a t\u1ea1o ra m\u1ed9t \u0111\u01b0\u1eddng d\u1eabn \u0111i\u1ec7n, trong khi nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a h\u1ed3 quang li\u00ean t\u1ee5c t\u1ea1o ra nhi\u1ec1u h\u1ea1t mang \u0111i\u1ec7n h\u01a1n th\u00f4ng qua ion h\u00f3a nhi\u1ec7t. Ph\u00e1 v\u1ee1 chu k\u1ef3 n\u00e0y \u0111\u00f2i h\u1ecfi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn d\u1ef1a tr\u00ean v\u1eadt l\u00fd ph\u1ee9c t\u1ea1p, lo\u1ea1i b\u1ecf m\u00f4i tr\u01b0\u1eddng ion h\u00f3a, t\u0103ng \u0111i\u1ec7n tr\u1edf h\u1ed3 quang v\u01b0\u1ee3t qu\u00e1 m\u1ee9c b\u1ec1n v\u1eefng ho\u1eb7c t\u1eadn d\u1ee5ng \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng t\u1ef1 nhi\u00ean trong h\u1ec7 th\u1ed1ng AC.<\/p>\n<p>C\u00f4ng ngh\u1ec7 m\u00e1y c\u1eaft hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng ba ph\u01b0\u01a1ng ph\u00e1p d\u1eadp h\u1ed3 quang ch\u00ednh, m\u1ed7i ph\u01b0\u01a1ng ph\u00e1p khai th\u00e1c c\u00e1c nguy\u00ean t\u1eafc v\u1eadt l\u00fd kh\u00e1c nhau. Hi\u1ec3u c\u00e1c c\u01a1 ch\u1ebf n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho c\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n ch\u1ec9 \u0111\u1ecbnh thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7, c\u00e1c nh\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf duy tr\u00ec c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng quan tr\u1ecdng v\u00e0 c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 VIOX Electric thi\u1ebft k\u1ebf m\u00e1y c\u1eaft th\u1ebf h\u1ec7 ti\u1ebfp theo cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p, th\u01b0\u01a1ng m\u1ea1i v\u00e0 ti\u1ec7n \u00edch.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/VIOX-VCB-and-SF6-gas-Circuit-breaker.webp\" alt=\"Three VIOX circuit breakers showing magnetic blowout MCCB, vacuum interrupter VCB, and SF6 gas circuit breaker with cutaway views\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\"><figcaption style=\"text-align: center; font-style: italic; color: #555; margin-top: 5px; font-size: 0.9em;\">H\u00ecnh 1: D\u00f2ng s\u1ea3n ph\u1ea9m M\u00e1y c\u1eaft VIOX \u2013 B\u00ean tr\u00e1i: MCCB d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng; Trung t\u00e2m: M\u00e1y c\u1eaft ch\u00e2n kh\u00f4ng; B\u00ean ph\u1ea3i: M\u00e1y c\u1eaft kh\u00ed SF6.<\/figcaption><\/figure>\n<hr>\n<h2>C\u00f4ng ngh\u1ec7 D\u1eadp H\u1ed3 quang b\u1eb1ng T\u1eeb tr\u01b0\u1eddng: \u0110i\u1ec1u khi\u1ec3n H\u1ed3 quang \u0110i\u1ec7n t\u1eeb<\/h2>\n<h3>Nguy\u00ean t\u1eafc V\u1eadt l\u00fd<\/h3>\n<p>D\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng khai th\u00e1c \u0111\u1ecbnh lu\u1eadt l\u1ef1c Lorentz, trong \u0111\u00f3 m\u1ed9t d\u00e2y d\u1eabn mang d\u00f2ng \u0111i\u1ec7n trong m\u1ed9t t\u1eeb tr\u01b0\u1eddng ch\u1ecbu m\u1ed9t l\u1ef1c vu\u00f4ng g\u00f3c: <strong>F = I \u00d7 L \u00d7 B<\/strong> (trong \u0111\u00f3 I l\u00e0 d\u00f2ng \u0111i\u1ec7n h\u1ed3 quang, L l\u00e0 chi\u1ec1u d\u00e0i h\u1ed3 quang v\u00e0 B l\u00e0 m\u1eadt \u0111\u1ed9 t\u1eeb th\u00f4ng). Trong m\u00e1y c\u1eaft, l\u1ef1c \u0111i\u1ec7n t\u1eeb n\u00e0y \u0111\u1ea9y h\u1ed3 quang ra kh\u1ecfi c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh v\u00e0o c\u00e1c \u1ed1ng d\u1eadp h\u1ed3 quang \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t ch\u1ee9a c\u00e1c t\u1ea5m chia h\u1ed3 quang.<\/p>\n<p>Qu\u00e1 tr\u00ecnh b\u1eaft \u0111\u1ea7u khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m t\u00e1ch ra v\u00e0 m\u1ed9t h\u1ed3 quang h\u00ecnh th\u00e0nh. D\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua h\u1ed3 quang t\u01b0\u01a1ng t\u00e1c v\u1edbi m\u1ed9t t\u1eeb tr\u01b0\u1eddng \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi nam ch\u00e2m v\u0129nh c\u1eedu ho\u1eb7c cu\u1ed9n d\u00e2y d\u1eadp h\u1ed3 quang \u0111i\u1ec7n t\u1eeb \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp v\u1edbi m\u1ea1ch. S\u1ef1 t\u01b0\u01a1ng t\u00e1c n\u00e0y t\u1ea1o ra m\u1ed9t l\u1ef1c \u0111\u1ea9y h\u1ed3 quang l\u00ean tr\u00ean v\u00e0 ra ngo\u00e0i v\u1edbi v\u1eadn t\u1ed1c v\u01b0\u1ee3t qu\u00e1 100 m\/s, k\u00e9o d\u00e0i n\u00f3 v\u00e0o c\u00e1c v\u00f9ng m\u00e1t h\u01a1n, n\u01a1i qu\u00e1 tr\u00ecnh kh\u1eed ion c\u00f3 th\u1ec3 x\u1ea3y ra.<\/p>\n<h3>Thi\u1ebft k\u1ebf \u1ed0ng D\u1eadp H\u1ed3 quang v\u00e0 T\u1ea5m Chia H\u1ed3 quang<\/h3>\n<p>C\u00e1c h\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng c\u00e1c \u1ed1ng d\u1eadp h\u1ed3 quang ch\u1ee9a 7-15 t\u1ea5m chia h\u1ed3 quang b\u1eb1ng v\u1eadt li\u1ec7u s\u1eaft t\u1eeb (th\u01b0\u1eddng l\u00e0 th\u00e9p ho\u1eb7c th\u00e9p m\u1ea1 \u0111\u1ed3ng) c\u00e1ch nhau 2-5mm. Khi h\u1ed3 quang k\u00e9o d\u00e0i \u0111i v\u00e0o \u1ed1ng, n\u00f3 chia th\u00e0nh nhi\u1ec1u h\u1ed3 quang n\u1ed1i ti\u1ebfp tr\u00ean m\u1ed7i khe h\u1edf gi\u1eefa c\u00e1c t\u1ea5m. S\u1ef1 ph\u00e2n \u0111o\u1ea1n n\u00e0y ph\u1ee5c v\u1ee5 ba ch\u1ee9c n\u0103ng quan tr\u1ecdng:<\/p>\n<ul>\n<li><strong>Hi\u1ec7u \u1ee9ng nh\u00e2n \u0111i\u1ec7n \u00e1p:<\/strong> M\u1ed7i \u0111o\u1ea1n h\u1ed3 quang ph\u00e1t tri\u1ec3n \u0111i\u1ec7n \u00e1p r\u01a1i anode v\u00e0 cathode ri\u00eang (kho\u1ea3ng 15-20V m\u1ed7i \u0111o\u1ea1n). V\u1edbi 10 t\u1ea5m t\u1ea1o ra 9 khe h\u1edf, t\u1ed5ng \u0111i\u1ec7n \u00e1p h\u1ed3 quang c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 135-180V, v\u01b0\u1ee3t qu\u00e1 \u0111\u00e1ng k\u1ec3 \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng v\u00e0 bu\u1ed9c d\u00f2ng \u0111i\u1ec7n v\u1ec1 kh\u00f4ng.<\/li>\n<li><strong>T\u0103ng c\u01b0\u1eddng l\u00e0m m\u00e1t:<\/strong> C\u00e1c t\u1ea5m kim lo\u1ea1i ho\u1ea1t \u0111\u1ed9ng nh\u01b0 b\u1ed9 t\u1ea3n nhi\u1ec7t, nhanh ch\u00f3ng tr\u00edch xu\u1ea5t n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t t\u1eeb plasma h\u1ed3 quang. C\u00e1c t\u1ea5m th\u00e9p cung c\u1ea5p c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb t\u00ednh t\u1ed1t gi\u00fap t\u0103ng c\u01b0\u1eddng l\u1ef1c d\u1eadp h\u1ed3 quang, trong khi c\u00e1c bi\u1ebfn th\u1ec3 m\u1ea1 \u0111\u1ed3ng l\u00e0m gi\u1ea3m \u0111i\u1ec7n \u00e1p r\u01a1i tr\u00ean to\u00e0n b\u1ed9 c\u1ee5m \u1ed1ng.<\/li>\n<li><strong>T\u1ea1o kh\u00ed:<\/strong> Nhi\u1ec7t h\u1ed3 quang l\u00e0m bay h\u01a1i c\u00e1c th\u00e0nh ph\u1ea7n \u1ed1ng d\u1eadp h\u1ed3 quang b\u1eb1ng polyme ho\u1eb7c s\u1ee3i, t\u1ea1o ra c\u00e1c kh\u00ed kh\u1eed ion gi\u00e0u hydro gi\u00fap l\u00e0m m\u00e1t v\u00e0 d\u1eadp t\u1eaft h\u1ed3 quang. S\u1ef1 ph\u00e1t tri\u1ec3n kh\u00ed \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t n\u00e0y l\u00e0 m\u1ed9t t\u00ednh n\u0103ng thi\u1ebft k\u1ebf c\u00f3 ch\u1ee7 \u00fd trong nhi\u1ec1u bu\u1ed3ng h\u1ed3 quang MCCB.<\/li>\n<\/ul>\n<p>MCCB VIOX s\u1eed d\u1ee5ng h\u00ecnh h\u1ecdc \u1ed1ng d\u1eadp h\u1ed3 quang \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a v\u1edbi kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c t\u1ea5m t\u0103ng d\u1ea7n\u2014h\u1eb9p h\u01a1n \u1edf l\u1ed1i v\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1eaft gi\u1eef h\u1ed3 quang, r\u1ed9ng h\u01a1n \u1edf tr\u00ean c\u00f9ng \u0111\u1ec3 ch\u1ee9a s\u1ef1 gi\u00e3n n\u1edf c\u1ee7a h\u1ed3 quang\u2014\u0111\u1ea1t \u0111\u01b0\u1ee3c kh\u1ea3 n\u0103ng c\u1eaft \u0111\u00e1ng tin c\u1eady trong 10-16ms \u1edf d\u00f2ng s\u1ef1 c\u1ed1 \u0111\u1ecbnh m\u1ee9c l\u00ean \u0111\u1ebfn 100kA.<\/p>\n<h3>\u1ee8ng d\u1ee5ng v\u00e0 H\u1ea1n ch\u1ebf<\/h3>\n<p>C\u00f4ng ngh\u1ec7 d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng chi\u1ebfm \u01b0u th\u1ebf trong m\u00e1y c\u1eaft \u0111i\u1ec7n \u00e1p th\u1ea5p tr\u00ean nhi\u1ec1u danh m\u1ee5c:<\/p>\n<ul>\n<li><strong>M\u00e1y c\u1eaft thu nh\u1ecf (MCB):<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng d\u00e2n d\u1ee5ng\/th\u01b0\u01a1ng m\u1ea1i 6-125A s\u1eed d\u1ee5ng c\u00e1c h\u1ec7 th\u1ed1ng t\u1eeb t\u00ednh \u0111\u01a1n gi\u1ea3n h\u00f3a v\u1edbi 4-6 t\u1ea5m chia h\u1ed3 quang<\/li>\n<li><strong>M\u00e1y c\u1eaft v\u1ecf \u0111\u00fac (MCCB):<\/strong> Thi\u1ebft b\u1ecb c\u00f4ng nghi\u1ec7p 16-1600A v\u1edbi \u1ed1ng d\u1eadp h\u1ed3 quang ph\u1ee9c t\u1ea1p \u0111\u1ea1t kh\u1ea3 n\u0103ng c\u1eaft 6-100kA<\/li>\n<li><strong>M\u00e1y c\u1eaft kh\u00f4ng kh\u00ed (ACB):<\/strong> K\u00edch th\u01b0\u1edbc khung 800-6300A v\u1edbi cu\u1ed9n d\u00e2y d\u1eadp h\u1ed3 quang \u0111i\u1ec7n t\u1eeb l\u1edbn \u0111\u1ec3 d\u1eadp h\u1ed3 quang trong kh\u00f4ng kh\u00ed l\u00ean \u0111\u1ebfn 100kA<\/li>\n<\/ul>\n<p>H\u1ea1n ch\u1ebf ch\u00ednh l\u00e0 c\u1ea5p \u0111i\u1ec7n \u00e1p. D\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf tr\u00ean 1000V AC do y\u00eau c\u1ea7u kho\u1ea3ng c\u00e1ch ti\u1ebfp \u0111i\u1ec3m v\u00e0 k\u00edch th\u01b0\u1edbc \u1ed1ng d\u1eadp h\u1ed3 quang qu\u00e1 l\u1edbn. Ngo\u00e0i ra, c\u00e1c \u1ee9ng d\u1ee5ng DC \u0111\u1eb7t ra nh\u1eefng th\u00e1ch th\u1ee9c v\u00ec kh\u00f4ng c\u00f3 \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng t\u1ef1 nhi\u00ean\u2014m\u00e1y c\u1eaft d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng DC y\u00eau c\u1ea7u t\u1ed1c \u0111\u1ed9 m\u1edf ti\u1ebfp \u0111i\u1ec3m nhanh h\u01a1n 3-5 l\u1ea7n (3-5 m\/s so v\u1edbi 1-2 m\/s \u0111\u1ed1i v\u1edbi AC) v\u00e0 v\u1eabn c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi vi\u1ec7c t\u00e1i k\u00edch h\u1ed3 quang.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Technical-diagram-of-magnetic-blowout-arc-extinction-showing-Lorentz-force-driving-arc-into-splitter-plates-with-labeled-components-and-force-vectors.webp\" alt=\"Technical diagram of magnetic blowout arc extinction showing Lorentz force driving arc into splitter plates with labeled components and force vectors\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\"><figcaption style=\"text-align: center; font-style: italic; color: #555; margin-top: 5px; font-size: 0.9em;\">H\u00ecnh 2: H\u00ecnh minh h\u1ecda k\u1ef9 thu\u1eadt v\u1ec1 c\u01a1 ch\u1ebf d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng, th\u1ec3 hi\u1ec7n l\u1ef1c Lorentz \u0111\u1ea9y h\u1ed3 quang v\u00e0o c\u00e1c t\u1ea5m chia h\u1ed3 quang \u0111\u1ec3 d\u1eadp t\u1eaft nhanh ch\u00f3ng.<\/figcaption><\/figure>\n<hr>\n<h2>C\u00f4ng ngh\u1ec7 M\u00e1y c\u1eaft Ch\u00e2n kh\u00f4ng: Lo\u1ea1i b\u1ecf M\u00f4i tr\u01b0\u1eddng<\/h2>\n<h3>\u01afu \u0111i\u1ec3m c\u1ee7a Ch\u00e2n kh\u00f4ng<\/h3>\n<p>M\u00e1y c\u1eaft ch\u00e2n kh\u00f4ng (VCB) s\u1eed d\u1ee5ng m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn ho\u00e0n to\u00e0n kh\u00e1c: lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n m\u00f4i tr\u01b0\u1eddng ion h\u00f3a. Ho\u1ea1t \u0111\u1ed9ng \u1edf \u00e1p su\u1ea5t d\u01b0\u1edbi 10\u207b\u2074 Pa (kho\u1ea3ng m\u1ed9t ph\u1ea7n tri\u1ec7u \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n), b\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng ch\u1ee9a r\u1ea5t \u00edt ph\u00e2n t\u1eed kh\u00ed \u0111\u1ebfn m\u1ee9c plasma h\u1ed3 quang kh\u00f4ng th\u1ec3 t\u1ef1 duy tr\u00ec th\u00f4ng qua c\u00e1c c\u01a1 ch\u1ebf ion h\u00f3a th\u00f4ng th\u01b0\u1eddng.<\/p>\n<p>Khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m VCB t\u00e1ch ra, h\u1ed3 quang ban \u0111\u1ea7u h\u00ecnh th\u00e0nh th\u00f4ng qua h\u01a1i kim lo\u1ea1i b\u1ed1c h\u01a1i t\u1eeb b\u1ec1 m\u1eb7t ti\u1ebfp \u0111i\u1ec3m do nhi\u1ec7t \u0111\u1ed9 cao. Tuy nhi\u00ean, trong m\u00f4i tr\u01b0\u1eddng ch\u00e2n kh\u00f4ng g\u1ea7n nh\u01b0 ho\u00e0n h\u1ea3o, h\u01a1i kim lo\u1ea1i n\u00e0y khu\u1ebfch t\u00e1n nhanh ch\u00f3ng \u0111\u1ebfn c\u00e1c b\u1ec1 m\u1eb7t ch\u1eafn xung quanh, n\u01a1i n\u00f3 ng\u01b0ng t\u1ee5 v\u00e0 h\u00f3a r\u1eafn. T\u1ea1i \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng ti\u1ebfp theo (trong h\u1ec7 th\u1ed1ng AC), h\u1ed3 quang t\u1ef1 d\u1eadp t\u1eaft m\u1ed9t c\u00e1ch t\u1ef1 nhi\u00ean v\u00e0 khe h\u1edf ti\u1ebfp \u0111i\u1ec3m ph\u1ee5c h\u1ed3i \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u1edbi t\u1ed1c \u0111\u1ed9 phi th\u01b0\u1eddng\u2014l\u00ean \u0111\u1ebfn 20kV\/\u03bcs so v\u1edbi 1-2kV\/\u03bcs trong kh\u00f4ng kh\u00ed.<\/p>\n<p>S\u1ef1 ph\u1ee5c h\u1ed3i \u0111i\u1ec7n m\u00f4i nhanh ch\u00f3ng n\u00e0y ng\u0103n ch\u1eb7n vi\u1ec7c t\u00e1i k\u00edch h\u1ed3 quang ngay c\u1ea3 khi \u0111i\u1ec7n \u00e1p ph\u1ee5c h\u1ed3i t\u0103ng l\u00ean tr\u00ean c\u00e1c ti\u1ebfp \u0111i\u1ec3m. To\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh c\u1eaft di\u1ec5n ra trong v\u00f2ng 3-8 mili gi\u00e2y, nhanh h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi h\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang b\u1eb1ng t\u1eeb tr\u01b0\u1eddng.<\/p>\n<h3>Thi\u1ebft k\u1ebf Ti\u1ebfp \u0111i\u1ec3m v\u00e0 Khu\u1ebfch t\u00e1n H\u1ed3 quang<\/h3>\n<p>C\u00e1c ti\u1ebfp \u0111i\u1ec3m VCB s\u1eed d\u1ee5ng c\u00e1c h\u00ecnh d\u1ea1ng chuy\u00ean d\u1ee5ng \u0111\u1ec3 ki\u1ec3m so\u00e1t h\u00e0nh vi h\u1ed3 quang v\u00e0 gi\u1ea3m thi\u1ec3u s\u1ef1 x\u00f3i m\u00f2n ti\u1ebfp \u0111i\u1ec3m:<\/p>\n<ul>\n<li><strong>Ti\u1ebfp \u0111i\u1ec3m ph\u1eb3ng<\/strong> c\u00f3 b\u1ec1 m\u1eb7t ph\u1eb3ng ho\u1eb7c h\u01a1i \u0111\u01b0\u1eddng vi\u1ec1n \u0111\u01a1n gi\u1ea3n ph\u00f9 h\u1ee3p v\u1edbi d\u00f2ng \u0111i\u1ec7n d\u01b0\u1edbi 10kA. H\u1ed3 quang t\u1eadp trung t\u1ea1i m\u1ed9t \u0111i\u1ec3m duy nh\u1ea5t, d\u1eabn \u0111\u1ebfn gia nhi\u1ec7t c\u1ee5c b\u1ed9 nh\u01b0ng s\u1ea3n xu\u1ea5t \u0111\u01a1n gi\u1ea3n.<\/li>\n<li><strong>Ti\u1ebfp \u0111i\u1ec3m xo\u1eafn \u1ed1c ho\u1eb7c h\u00ecnh ch\u00e9n<\/strong> k\u1ebft h\u1ee3p c\u00e1c khe ho\u1eb7c r\u00e3nh t\u1ea1o ra m\u1ed9t t\u1eeb tr\u01b0\u1eddng d\u1ecdc tr\u1ee5c (AMF) khi d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua. Tr\u01b0\u1eddng t\u1ef1 t\u1ea1o n\u00e0y l\u00e0m cho h\u1ed3 quang quay nhanh ch\u00f3ng quanh b\u1ec1 m\u1eb7t ti\u1ebfp \u0111i\u1ec3m (l\u00ean \u0111\u1ebfn 10.000 v\u00f2ng\/ph\u00fat), ph\u00e2n ph\u1ed1i s\u1ef1 x\u00f3i m\u00f2n \u0111\u1ed3ng \u0111\u1ec1u v\u00e0 ng\u0103n ng\u1eeba c\u00e1c \u0111i\u1ec3m n\u00f3ng t\u1eadp trung. Ti\u1ebfp \u0111i\u1ec3m AMF r\u1ea5t c\u1ea7n thi\u1ebft cho VCB \u0111i\u1ec7n \u00e1p trung b\u00ecnh x\u1eed l\u00fd d\u00f2ng c\u1eaft 25-40kA.<\/li>\n<\/ul>\n<p>V\u1ecf b\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng\u2014th\u01b0\u1eddng l\u00e0 g\u1ed1m ho\u1eb7c g\u1ed1m th\u1ee7y tinh\u2014ph\u1ea3i duy tr\u00ec kh\u1ea3 n\u0103ng l\u00e0m k\u00edn kh\u00ed trong 20-30 n\u0103m trong khi ch\u1ecbu \u0111\u01b0\u1ee3c va \u0111\u1eadp c\u01a1 h\u1ecdc v\u00e0 chu k\u1ef3 nhi\u1ec7t. C\u00e1c t\u1ea5m ch\u1eafn kim lo\u1ea1i b\u00ean trong ng\u0103n ch\u1eb7n s\u1ef1 l\u1eafng \u0111\u1ecdng h\u01a1i kim lo\u1ea1i tr\u00ean c\u00e1c b\u1ec1 m\u1eb7t c\u00e1ch \u0111i\u1ec7n, \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i.<\/p>\n<h3>\u0110\u1eb7c \u0111i\u1ec3m hi\u1ec7u su\u1ea5t<\/h3>\n<p>C\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng mang l\u1ea1i nh\u1eefng l\u1ee3i th\u1ebf h\u1ea5p d\u1eabn cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n \u00e1p trung b\u00ecnh (3kV \u0111\u1ebfn 40.5kV):<\/p>\n<ul>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec:<\/strong> Kh\u00f4ng c\u00f3 m\u00f4i tr\u01b0\u1eddng d\u1eadp h\u1ed3 quang ti\u00eau hao, kh\u00f4ng gi\u00e1m s\u00e1t kh\u00ed, kh\u00f4ng l\u00e0m s\u1ea1ch ti\u1ebfp \u0111i\u1ec3m. Tu\u1ed5i th\u1ecd c\u01a1 h\u1ecdc \u0111i\u1ec3n h\u00ecnh v\u01b0\u1ee3t qu\u00e1 10.000 thao t\u00e1c \u1edf d\u00f2ng \u0111i\u1ec7n \u0111\u1ecbnh m\u1ee9c, v\u1edbi tu\u1ed5i th\u1ecd \u0111i\u1ec7n l\u00e0 50-100 l\u1ea7n c\u1eaft d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y \u0111\u1ee7.<\/li>\n<li><strong>K\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn:<\/strong> Vi\u1ec7c kh\u00f4ng c\u00f3 \u1ed1ng d\u1eadp h\u1ed3 quang v\u00e0 b\u1ec3 ch\u1ee9a kh\u00ed cho ph\u00e9p gi\u1ea3m k\u00edch th\u01b0\u1edbc 40-60% so v\u1edbi c\u00e1c m\u00e1y c\u1eaft SF6 t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. M\u1ed9t t\u1ee7 VCB 12kV chi\u1ebfm kho\u1ea3ng 0.4m\u00b2 so v\u1edbi 0.7m\u00b2 \u0111\u1ed1i v\u1edbi c\u00f4ng ngh\u1ec7 SF6.<\/li>\n<li><strong>An to\u00e0n m\u00f4i tr\u01b0\u1eddng:<\/strong> Kh\u00f4ng c\u00f3 kh\u00ed \u0111\u1ed9c h\u1ea1i, kh\u00f4ng c\u00f3 nguy c\u01a1 h\u1ecfa ho\u1ea1n, kh\u00f4ng ph\u00e1t th\u1ea3i kh\u00ed nh\u00e0 k\u00ednh. B\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 t\u00e1i ch\u1ebf ho\u00e0n to\u00e0n khi h\u1ebft tu\u1ed5i th\u1ecd.<\/li>\n<li><strong>Ho\u1ea1t \u0111\u1ed9ng nhanh ch\u00f3ng:<\/strong> D\u1eadp h\u1ed3 quang 3-8ms cho ph\u00e9p \u0111\u00f3ng l\u1ea1i nhanh ch\u00f3ng \u0111\u1ec3 x\u00f3a s\u1ef1 c\u1ed1 tho\u00e1ng qua trong m\u1ea1ng ph\u00e2n ph\u1ed1i.<\/li>\n<\/ul>\n<p>H\u1ea1n ch\u1ebf ch\u00ednh v\u1eabn l\u00e0 c\u1ea5p \u0111i\u1ec7n \u00e1p. Tr\u00ean 40.5kV, khe h\u1edf ti\u1ebfp \u0111i\u1ec3m c\u1ea7n thi\u1ebft \u0111\u1ec3 ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n m\u00f4i tr\u1edf n\u00ean kh\u00f4ng th\u1ef1c t\u1ebf v\u00e0 nh\u1eefng th\u00e1ch th\u1ee9c trong s\u1ea3n xu\u1ea5t t\u0103ng l\u00ean theo c\u1ea5p s\u1ed1 nh\u00e2n. Ngo\u00e0i ra, c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi vi\u1ec7c c\u1eaft DC\u2014vi\u1ec7c kh\u00f4ng c\u00f3 \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng c\u00f3 ngh\u0129a l\u00e0 h\u1ed3 quang c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i v\u00f4 th\u1eddi h\u1ea1n tr\u1eeb khi b\u1ecb d\u1eadp t\u1eaft c\u01b0\u1ee1ng b\u1ee9c th\u00f4ng qua c\u00e1c m\u1ea1ch b\u00ean ngo\u00e0i.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Vacuum-circuit-breaker-interrupter-cross-section-showing-three-stage-arc-extinction-process-from-contact-separation-through-metal-vapor-diffusion-to-arc-quenching.webp\" alt=\"Vacuum circuit breaker interrupter cross-section showing three-stage arc extinction process from contact separation through metal vapor diffusion to arc quenching\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\"><figcaption style=\"text-align: center; font-style: italic; color: #555; margin-top: 5px; font-size: 0.9em;\">H\u00ecnh 3: Qu\u00e1 tr\u00ecnh d\u1eadp h\u1ed3 quang ba giai \u0111o\u1ea1n trong M\u00e1y c\u1eaft Ch\u00e2n kh\u00f4ng: T\u00e1ch Ti\u1ebfp \u0111i\u1ec3m, Khu\u1ebfch t\u00e1n H\u01a1i Kim lo\u1ea1i v\u00e0 Ph\u1ee5c h\u1ed3i \u0110i\u1ec7n m\u00f4i.<\/figcaption><\/figure>\n<hr>\n<h2>C\u00f4ng ngh\u1ec7 m\u00e1y c\u1eaft SF6: C\u01a1 ch\u1ebf b\u1eaft gi\u1eef \u0111i\u1ec7n t\u1eed<\/h2>\n<h3>\u0110\u1eb7c t\u00ednh c\u1ee7a kh\u00ed SF6<\/h3>\n<p>Kh\u00ed sulfur hexafluoride (SF6) \u0111\u00e3 c\u00e1ch m\u1ea1ng h\u00f3a thi\u1ebft k\u1ebf m\u00e1y c\u1eaft \u0111i\u1ec7n cao th\u1ebf nh\u1edd c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a n\u00f3. Lo\u1ea1i kh\u00ed kh\u00f4ng m\u00e0u, kh\u00f4ng m\u00f9i, kh\u00f4ng \u0111\u1ed9c h\u1ea1i n\u00e0y c\u00f3 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i cao g\u1ea5p 2,5 l\u1ea7n so v\u1edbi kh\u00f4ng kh\u00ed \u1edf \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n v\u00e0 g\u1ea5p 2-3 l\u1ea7n \u1edf \u00e1p su\u1ea5t v\u1eadn h\u00e0nh th\u00f4ng th\u01b0\u1eddng (4-6 bar tuy\u1ec7t \u0111\u1ed1i). Quan tr\u1ecdng h\u01a1n, SF6 c\u00f3 t\u00ednh \u00e2m \u0111i\u1ec7n m\u1ea1nh m\u1ebd\u2014n\u00f3 t\u00edch c\u1ef1c b\u1eaft gi\u1eef c\u00e1c electron t\u1ef1 do \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c ion \u00e2m \u1ed5n \u0111\u1ecbnh (SF6\u207b).<\/p>\n<p>C\u01a1 ch\u1ebf b\u1eaft gi\u1eef \u0111i\u1ec7n t\u1eed n\u00e0y l\u00e0 ch\u00eca kh\u00f3a cho kh\u1ea3 n\u0103ng d\u1eadp h\u1ed3 quang v\u01b0\u1ee3t tr\u1ed9i c\u1ee7a SF6. Khi m\u1ed9t h\u1ed3 quang h\u00ecnh th\u00e0nh trong kh\u00ed SF6, plasma ch\u1ee9a c\u00e1c electron t\u1ef1 do duy tr\u00ec \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n. Tuy nhi\u00ean, c\u00e1c ph\u00e2n t\u1eed SF6 nhanh ch\u00f3ng g\u1eafn v\u00e0o c\u00e1c electron n\u00e0y, chuy\u1ec3n ch\u00fang th\u00e0nh c\u00e1c ion \u00e2m n\u1eb7ng, t\u01b0\u01a1ng \u0111\u1ed1i b\u1ea5t \u0111\u1ed9ng. Qu\u00e1 tr\u00ecnh n\u00e0y l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 s\u1ed1 l\u01b0\u1ee3ng h\u1ea1t mang \u0111i\u1ec7n c\u00f3 s\u1eb5n \u0111\u1ec3 duy tr\u00ec h\u1ed3 quang, cho ph\u00e9p d\u1eadp t\u1eaft h\u1ed3 quang t\u1ea1i \u0111i\u1ec3m d\u00f2ng \u0111i\u1ec7n b\u1eb1ng kh\u00f4ng.<\/p>\n<p>H\u1ec7 s\u1ed1 g\u1eafn k\u1ebft c\u1ee7a SF6 l\u1edbn h\u01a1n kho\u1ea3ng 100 l\u1ea7n so v\u1edbi kh\u00f4ng kh\u00ed, c\u00f3 ngh\u0129a l\u00e0 qu\u00e1 tr\u00ecnh b\u1eaft gi\u1eef \u0111i\u1ec7n t\u1eed x\u1ea3y ra nhanh h\u01a1n nhi\u1ec1u. K\u1ebft h\u1ee3p v\u1edbi \u0111\u1ed9 d\u1eabn nhi\u1ec7t tuy\u1ec7t v\u1eddi (SF6 lo\u1ea1i b\u1ecf nhi\u1ec7t hi\u1ec7u qu\u1ea3 kh\u1ecfi c\u1ed9t h\u1ed3 quang), \u0111i\u1ec1u n\u00e0y t\u1ea1o ra c\u00e1c \u0111i\u1ec1u ki\u1ec7n l\u00fd t\u01b0\u1edfng \u0111\u1ec3 d\u1eadp t\u1eaft h\u1ed3 quang nhanh ch\u00f3ng trong c\u00e1c \u1ee9ng d\u1ee5ng \u0111i\u1ec7n cao th\u1ebf.<\/p>\n<h3>Thi\u1ebft k\u1ebf ki\u1ec3u Puffer v\u00e0 T\u1ef1 Th\u1ed5i<\/h3>\n<p>M\u00e1y c\u1eaft SF6 hi\u1ec7n \u0111\u1ea1i s\u1eed d\u1ee5ng hai k\u1ef9 thu\u1eadt ng\u1eaft h\u1ed3 quang ch\u00ednh:<\/p>\n<ul>\n<li><strong>M\u00e1y c\u1eaft ki\u1ec3u Puffer<\/strong> s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng c\u01a1 h\u1ecdc t\u1eeb c\u01a1 c\u1ea5u v\u1eadn h\u00e0nh \u0111\u1ec3 n\u00e9n kh\u00ed SF6 trong m\u1ed9t xi lanh puffer. Khi c\u00e1c ti\u1ebfp \u0111i\u1ec3m t\u00e1ch ra, kh\u00ed n\u00e9n th\u1ed5i qua m\u1ed9t v\u00f2i phun ngang qua h\u1ed3 quang v\u1edbi v\u1eadn t\u1ed1c cao (g\u1ea7n 300 m\/s), \u0111\u1ed3ng th\u1eddi l\u00e0m m\u00e1t plasma v\u00e0 qu\u00e9t c\u00e1c h\u1ea1t ion h\u00f3a ra kh\u1ecfi khe h\u1edf ti\u1ebfp \u0111i\u1ec3m. S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa d\u00f2ng kh\u00ed c\u01b0\u1ee1ng b\u1ee9c, b\u1eaft gi\u1eef \u0111i\u1ec7n t\u1eed v\u00e0 l\u00e0m m\u00e1t b\u1eb1ng nhi\u1ec7t d\u1eadp t\u1eaft h\u1ed3 quang trong v\u00f2ng 10-20ms ngay c\u1ea3 \u1edf d\u00f2ng s\u1ef1 c\u1ed1 v\u01b0\u1ee3t qu\u00e1 63kA.<\/li>\n<li><strong>M\u00e1y c\u1eaft t\u1ef1 th\u1ed5i (gi\u00e3n n\u1edf nhi\u1ec7t)<\/strong> lo\u1ea1i b\u1ecf xi lanh puffer, thay v\u00e0o \u0111\u00f3 s\u1eed d\u1ee5ng nhi\u1ec7t h\u1ed3 quang \u0111\u1ec3 t\u1ea1o ra s\u1ef1 gia t\u0103ng \u00e1p su\u1ea5t. H\u1ed3 quang h\u00ecnh th\u00e0nh trong m\u1ed9t bu\u1ed3ng k\u00edn, n\u01a1i s\u1ef1 gi\u00e3n n\u1edf nhi\u1ec7t t\u1ea1o ra s\u1ef1 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t, th\u00fac \u0111\u1ea9y d\u00f2ng kh\u00ed \u0111i qua h\u1ed3 quang. Thi\u1ebft k\u1ebf n\u00e0y l\u00e0m gi\u1ea3m s\u1ef1 ph\u1ee9c t\u1ea1p v\u1ec1 c\u01a1 h\u1ecdc v\u00e0 n\u0103ng l\u01b0\u1ee3ng v\u1eadn h\u00e0nh, l\u00e0m cho n\u00f3 ph\u00f9 h\u1ee3p cho c\u00e1c ho\u1ea1t \u0111\u1ed9ng chuy\u1ec3n m\u1ea1ch th\u01b0\u1eddng xuy\u00ean. C\u00e1c thi\u1ebft k\u1ebf t\u1ef1 th\u1ed5i hi\u1ec7n \u0111\u1ea1i k\u1ebft h\u1ee3p c\u00e1c c\u01a1 ch\u1ebf puffer ph\u1ee5 tr\u1ee3 \u0111\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n nh\u1ecf m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady.<\/li>\n<\/ul>\n<p>C\u1ea3 hai thi\u1ebft k\u1ebf \u0111\u1ec1u s\u1eed d\u1ee5ng c\u00e1c v\u00f2i phun c\u00e1ch \u0111i\u1ec7n (th\u01b0\u1eddng l\u00e0 PTFE) \u0111\u1ecbnh h\u00ecnh d\u00f2ng kh\u00ed v\u00e0 ch\u1ecbu \u0111\u01b0\u1ee3c s\u1ef1 t\u1ea5n c\u00f4ng nhi\u1ec7t c\u1ee7a h\u1ed3 quang. H\u00ecnh d\u1ea1ng v\u00f2i phun r\u1ea5t quan tr\u1ecdng\u2014qu\u00e1 h\u1eb9p v\u00e0 d\u00f2ng kh\u00ed tr\u1edf n\u00ean h\u1ed7n lo\u1ea1n (l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t), qu\u00e1 r\u1ed9ng v\u00e0 h\u1ed3 quang khu\u1ebfch t\u00e1n m\u00e0 kh\u00f4ng \u0111\u01b0\u1ee3c l\u00e0m m\u00e1t \u0111\u1ea7y \u0111\u1ee7.<\/p>\n<h3>\u1ee8ng d\u1ee5ng \u0111i\u1ec7n \u00e1p cao<\/h3>\n<p>C\u00f4ng ngh\u1ec7 SF6 chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c c\u1ea5p \u0111i\u1ec7n \u00e1p truy\u1ec1n t\u1ea3i v\u00e0 ph\u00e2n ph\u1ed1i:<\/p>\n<ul>\n<li><strong>72,5kV \u0111\u1ebfn 145kV:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng tr\u1ea1m bi\u1ebfn \u00e1p ph\u00e2n ph\u1ed1i ti\u00eau chu\u1ea9n v\u1edbi kh\u1ea3 n\u0103ng c\u1eaft 31,5-40kA<\/li>\n<li><strong>245kV \u0111\u1ebfn 420kV:<\/strong> B\u1ea3o v\u1ec7 m\u1ea1ng l\u01b0\u1edbi truy\u1ec1n t\u1ea3i v\u1edbi kh\u1ea3 n\u0103ng d\u00f2ng s\u1ef1 c\u1ed1 50-63kA<\/li>\n<li><strong>550kV \u0111\u1ebfn 800kV:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p si\u00eau cao, n\u01a1i SF6 v\u1eabn l\u00e0 c\u00f4ng ngh\u1ec7 duy nh\u1ea5t \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh \u0111\u1ec3 ng\u1eaft h\u1ed3 quang \u0111\u00e1ng tin c\u1eady<\/li>\n<\/ul>\n<p>M\u1ed9t b\u1ed9 ng\u1eaft SF6 duy nh\u1ea5t c\u00f3 th\u1ec3 ng\u1eaft c\u00e1c d\u00f2ng \u0111i\u1ec7n m\u00e0 s\u1ebd y\u00eau c\u1ea7u nhi\u1ec1u b\u00ecnh ch\u00e2n kh\u00f4ng m\u1eafc n\u1ed1i ti\u1ebfp. V\u00ed d\u1ee5: m\u1ed9t m\u00e1y c\u1eaft SF6 145kV s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 ng\u1eaft tr\u00ean m\u1ed7i pha, trong khi m\u1ed9t thi\u1ebft k\u1ebf ch\u00e2n kh\u00f4ng t\u01b0\u01a1ng \u0111\u01b0\u01a1ng s\u1ebd c\u1ea7n 4-6 b\u1ed9 ng\u1eaft m\u1eafc n\u1ed1i ti\u1ebfp\u2014l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 \u0111\u1ed9 ph\u1ee9c t\u1ea1p, chi ph\u00ed v\u00e0 c\u00e1c ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c.<\/p>\n<h3>C\u00e1c m\u1ed1i quan t\u00e2m v\u1ec1 m\u00f4i tr\u01b0\u1eddng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf<\/h3>\n<p>Nh\u01b0\u1ee3c \u0111i\u1ec3m quan tr\u1ecdng c\u1ee7a SF6 l\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng. V\u1edbi ti\u1ec1m n\u0103ng l\u00e0m n\u00f3ng to\u00e0n c\u1ea7u (GWP) g\u1ea5p 23.900 l\u1ea7n CO2 v\u00e0 tu\u1ed5i th\u1ecd trong kh\u00ed quy\u1ec3n v\u01b0\u1ee3t qu\u00e1 3.200 n\u0103m, SF6 l\u00e0 m\u1ed9t trong nh\u1eefng lo\u1ea1i kh\u00ed nh\u00e0 k\u00ednh m\u1ea1nh nh\u1ea5t. M\u1eb7c d\u00f9 ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111\u00e3 n\u1ed7 l\u1ef1c gi\u1ea3m thi\u1ec3u r\u00f2 r\u1ec9 (m\u00e1y c\u1eaft hi\u1ec7n \u0111\u1ea1i \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1ef7 l\u1ec7 r\u00f2 r\u1ec9 h\u00e0ng n\u0103m &lt;0,1%), n\u1ed3ng \u0111\u1ed9 SF6 trong kh\u00ed quy\u1ec3n v\u1eabn ti\u1ebfp t\u1ee5c t\u0103ng.<\/p>\n<p>\u0110i\u1ec1u n\u00e0y \u0111\u00e3 th\u00fac \u0111\u1ea9y nghi\u00ean c\u1ee9u chuy\u00ean s\u00e2u v\u1ec1 c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf SF6:<\/p>\n<ul>\n<li><strong>H\u1ed7n h\u1ee3p Fluoronitrile<\/strong> (C4F7N + kh\u00ed \u0111\u1ec7m CO2) cung c\u1ea5p 80-90% hi\u1ec7u su\u1ea5t \u0111i\u1ec7n m\u00f4i c\u1ee7a SF6 v\u1edbi GWP &lt;1%. Tuy nhi\u00ean, c\u00e1c h\u1ed7n h\u1ee3p n\u00e0y \u0111\u00f2i h\u1ecfi \u00e1p su\u1ea5t v\u1eadn h\u00e0nh cao h\u01a1n v\u00e0 c\u00f3 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 th\u1ea5p h\u01a1n.<\/li>\n<li><strong>Thi\u1ebft k\u1ebf lai ch\u00e2n kh\u00f4ng-SF6<\/strong> s\u1eed d\u1ee5ng b\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng cho c\u00e1c ph\u1ea7n trung th\u1ebf v\u00e0 SF6 t\u1ed1i thi\u1ec3u ch\u1ec9 khi th\u1ef1c s\u1ef1 c\u1ea7n thi\u1ebft, gi\u1ea3m t\u1ed5ng l\u01b0\u1ee3ng kh\u00ed t\u1eeb 60-80%.<\/li>\n<li><strong>C\u00f4ng ngh\u1ec7 kh\u00ed s\u1ea1ch<\/strong> s\u1eed d\u1ee5ng kh\u00ed n\u00e9n ho\u1eb7c nit\u01a1 v\u1edbi c\u00e1c thi\u1ebft k\u1ebf v\u00f2i phun ti\u00ean ti\u1ebfn, ph\u00f9 h\u1ee3p v\u1edbi \u0111i\u1ec7n \u00e1p l\u00ean \u0111\u1ebfn 145kV m\u1eb7c d\u00f9 c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n so v\u1edbi c\u00e1c thi\u1ebft b\u1ecb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng SF6.<\/li>\n<\/ul>\n<p>M\u1eb7c d\u00f9 c\u00f3 nh\u1eefng ph\u00e1t tri\u1ec3n n\u00e0y, SF6 v\u1eabn r\u1ea5t c\u1ea7n thi\u1ebft cho c\u00e1c \u1ee9ng d\u1ee5ng 245kV+, n\u01a1i ch\u01b0a c\u00f3 gi\u1ea3i ph\u00e1p thay th\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh n\u00e0o t\u1ed3n t\u1ea1i v\u1edbi chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady t\u01b0\u01a1ng \u0111\u01b0\u01a1ng.<\/p>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/VIOX-SF6-high-voltage-circuit-breaker-installation-in-electrical-substation-showing-gas-filled-interrupter-chambers-and-pressure-monitoring-equipment.webp\" alt=\"VIOX SF6 high-voltage circuit breaker installation in electrical substation showing gas-filled interrupter chambers and pressure monitoring equipment\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\"><figcaption style=\"text-align: center; font-style: italic; color: #555; margin-top: 5px; font-size: 0.9em;\">H\u00ecnh 4: M\u1ed9t l\u1eafp \u0111\u1eb7t M\u00e1y c\u1eaft SF6 \u0111i\u1ec7n cao th\u1ebf VIOX, c\u00f3 c\u00e1c bu\u1ed3ng ng\u1eaft ch\u1ee9a \u0111\u1ea7y kh\u00ed v\u00e0 h\u1ec7 th\u1ed1ng gi\u00e1m s\u00e1t \u00e1p su\u1ea5t ch\u00ednh x\u00e1c.<\/figcaption><\/figure>\n<hr>\n<h2>Ph\u00e2n t\u00edch so s\u00e1nh: Ma tr\u1eadn l\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7 d\u1eadp h\u1ed3 quang ph\u00f9 h\u1ee3p \u0111\u00f2i h\u1ecfi s\u1ef1 c\u00e2n b\u1eb1ng gi\u1eefa nhi\u1ec1u y\u1ebfu t\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 kinh t\u1ebf. B\u1ea3ng so s\u00e1nh sau \u0111\u00e2y t\u1ed5ng h\u1ee3p c\u00e1c th\u00f4ng s\u1ed1 hi\u1ec7u su\u1ea5t ch\u00ednh:<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"10\" style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f5f5f5;\">\n<th>Tham s\u1ed1<\/th>\n<th>Th\u1ed5i t\u1eeb t\u00ednh<\/th>\n<th>Ch\u00e2n kh\u00f4ng<\/th>\n<th>SF6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ph\u1ea1m Vi \u0110i\u1ec7n \u00c1p<\/strong><\/td>\n<td>L\u00ean \u0111\u1ebfn 1kV AC<\/td>\n<td>3kV \u2013 40,5kV<\/td>\n<td>12kV \u2013 800kV<\/td>\n<\/tr>\n<tr>\n<td><strong>X\u1ebfp h\u1ea1ng hi\u1ec7n t\u1ea1i \u0111i\u1ec3n h\u00ecnh<\/strong><\/td>\n<td>16A \u2013 6.300A<\/td>\n<td>630A \u2013 4.000A<\/td>\n<td>630A \u2013 5.000A<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 n\u0103ng ng\u1eaft<\/strong><\/td>\n<td>6kA \u2013 100kA<\/td>\n<td>25kA \u2013 50kA<\/td>\n<td>31,5kA \u2013 100kA+<\/td>\n<\/tr>\n<tr>\n<td><strong>Th\u1eddi gian d\u1eadp h\u1ed3 quang<\/strong><\/td>\n<td>10-20ms<\/td>\n<td>3-8ms<\/td>\n<td>10-20ms<\/td>\n<\/tr>\n<tr>\n<td><strong>Cu\u1ed9c s\u1ed1ng c\u01a1 h\u1ecdc<\/strong><\/td>\n<td>10.000 \u2013 25.000 thao t\u00e1c<\/td>\n<td>30.000 \u2013 50.000 thao t\u00e1c<\/td>\n<td>10.000 \u2013 30.000 thao t\u00e1c<\/td>\n<\/tr>\n<tr>\n<td><strong>Tu\u1ed5i th\u1ecd \u0111i\u1ec7n (d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y t\u1ea3i)<\/strong><\/td>\n<td>25-50 l\u1ea7n ng\u1eaft<\/td>\n<td>50-100 l\u1ea7n ng\u1eaft<\/td>\n<td>100-200 l\u1ea7n ng\u1eaft<\/td>\n<\/tr>\n<tr>\n<td><strong>Kho\u1ea3ng th\u1eddi gian b\u1ea3o tr\u00ec<\/strong><\/td>\n<td>1-2 n\u0103m<\/td>\n<td>T\u1eeb 5 \u0111\u1ebfn 10 n\u0103m<\/td>\n<td>2-5 n\u0103m<\/td>\n<\/tr>\n<tr>\n<td><strong>T\u00e1c \u0111\u1ed9ng m\u00f4i tr\u01b0\u1eddng<\/strong><\/td>\n<td>T\u1ed1i thi\u1ec3u<\/td>\n<td>Kh\u00f4ng c\u00f3<\/td>\n<td>Cao (GWP 23.900)<\/td>\n<\/tr>\n<tr>\n<td><strong>K\u00edch th\u01b0\u1edbc (t\u01b0\u01a1ng \u0111\u1ed1i)<\/strong><\/td>\n<td>V\u1eeba<\/td>\n<td>Nh\u1ecf<\/td>\n<td>L\u1edbn<\/td>\n<\/tr>\n<tr>\n<td><strong>Ban \u0110\u1ea7u Chi Ph\u00ed<\/strong><\/td>\n<td>Th\u1ea5p<\/td>\n<td>V\u1eeba<\/td>\n<td>Cao<\/td>\n<\/tr>\n<tr>\n<td><strong>Chi ph\u00ed v\u1eadn h\u00e0nh<\/strong><\/td>\n<td>V\u1eeba<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Trung b\u00ecnh-Cao<\/td>\n<\/tr>\n<tr>\n<td><strong>Kh\u1ea3 n\u0103ng DC<\/strong><\/td>\n<td>H\u1ea1n ch\u1ebf (v\u1edbi c\u00e1c s\u1eeda \u0111\u1ed5i)<\/td>\n<td>K\u00e9m (y\u00eau c\u1ea7u chuy\u1ec3n m\u1ea1ch c\u01b0\u1ee1ng b\u1ee9c)<\/td>\n<td>T\u1ed1t (v\u1edbi c\u00e1c thi\u1ebft k\u1ebf \u0111\u1eb7c bi\u1ec7t)<\/td>\n<\/tr>\n<tr>\n<td><strong>Gi\u1ea3m \u0111\u1ecbnh m\u1ee9c theo \u0111\u1ed9 cao<\/strong><\/td>\n<td>B\u1eaft bu\u1ed9c tr\u00ean 1.000m<\/td>\n<td>T\u1ed1i thi\u1ec3u<\/td>\n<td>B\u1eaft bu\u1ed9c tr\u00ean 1.000m<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1ee9c \u0111\u1ed9 ti\u1ebfng \u1ed3n<\/strong><\/td>\n<td>V\u1eeba ph\u1ea3i<\/td>\n<td>Th\u1ea5p<\/td>\n<td>V\u1eeba ph\u1ea3i - Cao<\/td>\n<\/tr>\n<tr>\n<td><strong>Nguy c\u01a1 h\u1ecfa ho\u1ea1n<\/strong><\/td>\n<td>Th\u1ea5p (s\u1ea3n ph\u1ea9m h\u1ed3 quang)<\/td>\n<td>Kh\u00f4ng c\u00f3<\/td>\n<td>Kh\u00f4ng c\u00f3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Khuy\u1ebfn ngh\u1ecb d\u00e0nh ri\u00eang cho \u1ee9ng d\u1ee5ng<\/h3>\n<ul>\n<li><strong>C\u00e1c c\u01a1 s\u1edf c\u00f4ng nghi\u1ec7p (480V-690V):<\/strong> MCCB v\u00e0 ACB th\u1ed5i t\u1eeb t\u00ednh mang l\u1ea1i s\u1ef1 c\u00e2n b\u1eb1ng t\u1ed1i \u01b0u gi\u1eefa chi ph\u00ed v\u00e0 hi\u1ec7u su\u1ea5t. MCCB VIOX v\u1edbi b\u1ed9 ph\u1eadn b\u1ea3o v\u1ec7 nhi\u1ec7t t\u1eeb v\u00e0 kh\u1ea3 n\u0103ng c\u1eaft 50kA ph\u00f9 h\u1ee3p v\u1edbi h\u1ea7u h\u1ebft c\u00e1c trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1, b\u1ea3ng ph\u00e2n ph\u1ed1i v\u00e0 c\u00e1c \u1ee9ng d\u1ee5ng b\u1ea3o v\u1ec7 m\u00e1y m\u00f3c.<\/li>\n<li><strong>C\u00e1c t\u00f2a nh\u00e0 th\u01b0\u01a1ng m\u1ea1i (l\u00ean \u0111\u1ebfn 15kV):<\/strong> M\u00e1y c\u1eaft ch\u00e2n kh\u00f4ng cung c\u1ea5p ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec, l\u00fd t\u01b0\u1edfng cho nh\u00e2n vi\u00ean \u0111i\u1ec7n h\u1ea1n ch\u1ebf. Thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft \u0111\u01b0\u1ee3c trang b\u1ecb VCB gi\u00fap gi\u1ea3m chi ph\u00ed v\u00f2ng \u0111\u1eddi th\u00f4ng qua kho\u1ea3ng th\u1eddi gian b\u1ea3o tr\u00ec k\u00e9o d\u00e0i v\u00e0 lo\u1ea1i b\u1ecf g\u00e1nh n\u1eb7ng tu\u00e2n th\u1ee7 m\u00f4i tr\u01b0\u1eddng.<\/li>\n<li><strong>Tr\u1ea1m bi\u1ebfn \u00e1p c\u1ee7a \u0111i\u1ec7n l\u1ef1c (72.5kV+):<\/strong> C\u00f4ng ngh\u1ec7 SF6 v\u1eabn c\u1ea7n thi\u1ebft cho b\u1ea3o v\u1ec7 \u0111i\u1ec7n \u00e1p truy\u1ec1n t\u1ea3i \u0111\u00e1ng tin c\u1eady m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng. Thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft c\u00e1ch \u0111i\u1ec7n b\u1eb1ng kh\u00ed (GIS) hi\u1ec7n \u0111\u1ea1i v\u1edbi kh\u1ea3 n\u0103ng gi\u00e1m s\u00e1t SF6 v\u00e0 ph\u00e1t hi\u1ec7n r\u00f2 r\u1ec9 gi\u1ea3m thi\u1ec3u t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u00e1c l\u1eafp \u0111\u1eb7t nh\u1ecf g\u1ecdn, ch\u1ed1ng ch\u1ecbu th\u1eddi ti\u1ebft.<\/li>\n<li><strong>T\u00e1i t\u1ea1o h\u1ec7 th\u1ed1ng n\u0103ng l\u01b0\u1ee3ng:<\/strong> C\u00e1c \u1ee9ng d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng m\u1eb7t tr\u1eddi v\u00e0 gi\u00f3 ng\u00e0y c\u00e0ng s\u1eed d\u1ee5ng c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng cho c\u00e1c h\u1ec7 th\u1ed1ng thu gom trung th\u1ebf (12-36kV), v\u1edbi b\u1ed9 ng\u1eaft DC d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh cho l\u01b0u tr\u1eef pin v\u00e0 b\u1ea3o v\u1ec7 chu\u1ed7i PV. T\u00ednh ch\u1ea5t kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c l\u1eafp \u0111\u1eb7t \u1edf xa.<\/li>\n<li><strong>Trung t\u00e2m d\u1eef li\u1ec7u v\u00e0 c\u00e1c c\u01a1 s\u1edf quan tr\u1ecdng:<\/strong> B\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng ho\u1eb7c d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh b\u1eb1ng kh\u00f4ng kh\u00ed tr\u00e1nh c\u00e1c y\u00eau c\u1ea7u b\u00e1o c\u00e1o m\u00f4i tr\u01b0\u1eddng SF6 \u0111\u1ed3ng th\u1eddi cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 \u0111\u00e1ng tin c\u1eady. Th\u1eddi gian ng\u1eaft nhanh (3-8ms \u0111\u1ed1i v\u1edbi ch\u00e2n kh\u00f4ng) gi\u1ea3m thi\u1ec3u th\u1eddi gian s\u1ee5t \u00e1p trong qu\u00e1 tr\u00ecnh lo\u1ea1i b\u1ecf s\u1ef1 c\u1ed1.<\/li>\n<\/ul>\n<figure style=\"text-align: center; margin: 20px 0;\">\n        <img decoding=\"async\" src=\"https:\/\/img.viox.com\/Comprehensive-comparison-infographic-of-magnetic-blowout-vacuum-and-SF6-arc-extinction-technologies-showing-mechanisms-specifications-and-application-recommendations.webp\" alt=\"Comprehensive comparison infographic of magnetic blowout, vacuum, and SF6 arc extinction technologies showing mechanisms, specifications, and application recommendations\" style=\"max-width: 100%; height: auto; display: block; margin: 0 auto;\"><figcaption style=\"text-align: center; font-style: italic; color: #555; margin-top: 5px; font-size: 0.9em;\">H\u00ecnh 5: Bi\u1ec3u \u0111\u1ed3 th\u00f4ng tin to\u00e0n di\u1ec7n so s\u00e1nh c\u00e1c c\u00f4ng ngh\u1ec7 d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh, ch\u00e2n kh\u00f4ng v\u00e0 SF6 tr\u00ean c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt v\u00e0 \u1ee9ng d\u1ee5ng ch\u00ednh.<\/figcaption><\/figure>\n<hr>\n<h2>B\u1ea3ng so s\u00e1nh hi\u1ec7u su\u1ea5t: V\u1eadt l\u00fd d\u1eadp h\u1ed3 quang<\/h2>\n<p>Hi\u1ec3u c\u00e1c kh\u00e1c bi\u1ec7t v\u1eadt l\u00fd c\u01a1 b\u1ea3n gi\u00fap gi\u1ea3i th\u00edch c\u00e1c \u0111\u1eb7c t\u00ednh hi\u1ec7u su\u1ea5t:<\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"10\" style=\"width: 100%; border-collapse: collapse; margin-bottom: 20px;\">\n<thead>\n<tr style=\"background-color: #f5f5f5;\">\n<th>C\u01a1 ch\u1ebf v\u1eadt l\u00fd<\/th>\n<th>Th\u1ed5i t\u1eeb t\u00ednh<\/th>\n<th>Ch\u00e2n kh\u00f4ng<\/th>\n<th>SF6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Ph\u01b0\u01a1ng ph\u00e1p d\u1eadp ch\u00ednh<\/strong><\/td>\n<td>K\u00e9o d\u00e0i h\u1ed3 quang + l\u00e0m m\u00e1t<\/td>\n<td>Lo\u1ea1i b\u1ecf m\u00f4i tr\u01b0\u1eddng<\/td>\n<td>B\u1eaft gi\u1eef electron + l\u00e0m m\u00e1t<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u00e1t tri\u1ec3n \u0111i\u1ec7n \u00e1p h\u1ed3 quang<\/strong><\/td>\n<td>80-200V (t\u1ea5m chia)<\/td>\n<td>20-50V (kho\u1ea3ng c\u00e1ch ng\u1eafn)<\/td>\n<td>100-300V (n\u00e9n kh\u00ed)<\/td>\n<\/tr>\n<tr>\n<td><strong>Ph\u1ee5c h\u1ed3i \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i<\/strong><\/td>\n<td>1-2 kV\/\u03bcs<\/td>\n<td>15-20 kV\/\u03bcs<\/td>\n<td>3-5 kV\/\u03bcs<\/td>\n<\/tr>\n<tr>\n<td><strong>C\u01a1 ch\u1ebf kh\u1eed ion<\/strong><\/td>\n<td>L\u00e0m m\u00e1t kh\u00ed + t\u00e1i h\u1ee3p<\/td>\n<td>Khu\u1ebfch t\u00e1n h\u01a1i kim lo\u1ea1i<\/td>\n<td>G\u1eafn electron (SF6\u207b)<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111i\u1ec3m kh\u00f4ng d\u00f2ng \u0111i\u1ec7n<\/strong><\/td>\n<td>Cao (ch\u1ec9 AC)<\/td>\n<td>Cao (ch\u1ec9 AC)<\/td>\n<td>Trung b\u00ecnh (c\u00f3 th\u1ec3 ng\u1eaft DC)<\/td>\n<\/tr>\n<tr>\n<td><strong>T\u1ed1c \u0111\u1ed9 \u0103n m\u00f2n ti\u1ebfp \u0111i\u1ec3m<\/strong><\/td>\n<td>Cao (0.1-0.5mm tr\u00ean 1000 l\u1ea7n thao t\u00e1c)<\/td>\n<td>Trung b\u00ecnh (0.01-0.05mm tr\u00ean 1000 l\u1ea7n thao t\u00e1c)<\/td>\n<td>Th\u1ea5p (0.005-0.02mm tr\u00ean 1000 l\u1ea7n thao t\u00e1c)<\/td>\n<\/tr>\n<tr>\n<td><strong>Ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng h\u1ed3 quang<\/strong><\/td>\n<td>T\u1ea5m chia + kh\u00ed<\/td>\n<td>B\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac + t\u1ea5m ch\u1eafn<\/td>\n<td>N\u00e9n kh\u00ed + v\u00f2i phun<\/td>\n<\/tr>\n<tr>\n<td><strong>S\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o \u00e1p su\u1ea5t<\/strong><\/td>\n<td>T\u1ed1i thi\u1ec3u<\/td>\n<td>Quan tr\u1ecdng (t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a ch\u00e2n kh\u00f4ng)<\/td>\n<td>Cao (m\u1eadt \u0111\u1ed9 kh\u00ed)<\/td>\n<\/tr>\n<tr>\n<td><strong>\u0110\u1ed9 nh\u1ea1y nhi\u1ec7t \u0111\u1ed9<\/strong><\/td>\n<td>V\u1eeba ph\u1ea3i (-40\u00b0C \u0111\u1ebfn +70\u00b0C)<\/td>\n<td>Th\u1ea5p (-50\u00b0C \u0111\u1ebfn +60\u00b0C)<\/td>\n<td>Cao (-30\u00b0C \u0111\u1ebfn +50\u00b0C \u0111\u1ed1i v\u1edbi SF6 ti\u00eau chu\u1ea9n)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr>\n<h2>C\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i v\u00e0 xu h\u01b0\u1edbng t\u01b0\u01a1ng lai<\/h2>\n<p>Ng\u00e0nh c\u00f4ng nghi\u1ec7p b\u1ed9 ng\u1eaft m\u1ea1ch \u0111ang tr\u1ea3i qua s\u1ef1 \u0111\u1ed5i m\u1edbi \u0111\u00e1ng k\u1ec3 do c\u00e1c quy \u0111\u1ecbnh v\u1ec1 m\u00f4i tr\u01b0\u1eddng, t\u00edch h\u1ee3p n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o v\u00e0 s\u1ed1 h\u00f3a:<\/p>\n<ul>\n<li><strong>B\u1ed9 ng\u1eaft m\u1ea1ch tr\u1ea1ng th\u00e1i r\u1eafn (SSCB)<\/strong> s\u1eed d\u1ee5ng ch\u1ea5t b\u00e1n d\u1eabn c\u00f4ng su\u1ea5t (IGBT, SiC MOSFET) lo\u1ea1i b\u1ecf ho\u00e0n to\u00e0n c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u01a1 h\u1ecdc, \u0111\u1ea1t \u0111\u01b0\u1ee3c th\u1eddi gian ng\u1eaft d\u01b0\u1edbi mili gi\u00e2y. M\u1eb7c d\u00f9 hi\u1ec7n t\u1ea1i ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf c\u00e1c \u1ee9ng d\u1ee5ng DC \u0111i\u1ec7n \u00e1p th\u1ea5p (trung t\u00e2m d\u1eef li\u1ec7u, s\u1ea1c EV), c\u00f4ng ngh\u1ec7 SSCB \u0111ang ti\u1ebfn t\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng AC \u0111i\u1ec7n \u00e1p trung b\u00ecnh. Vi\u1ec7c kh\u00f4ng c\u00f3 hao m\u00f2n c\u01a1 h\u1ecdc cho ph\u00e9p h\u00e0ng tri\u1ec7u thao t\u00e1c, m\u1eb7c d\u00f9 chi ph\u00ed ch\u1ea5t b\u00e1n d\u1eabn v\u1eabn c\u00f2n qu\u00e1 cao \u0111\u1ed1i v\u1edbi c\u00e1c \u1ee9ng d\u1ee5ng quy m\u00f4 ti\u1ec7n \u00edch.<\/li>\n<li><strong>B\u1ed9 ng\u1eaft m\u1ea1ch lai<\/strong> k\u1ebft h\u1ee3p c\u00e1c ti\u1ebfp \u0111i\u1ec3m c\u01a1 h\u1ecdc \u0111\u1ec3 d\u1eabn \u0111i\u1ec7n b\u00ecnh th\u01b0\u1eddng (gi\u1ea3m thi\u1ec3u t\u1ed5n th\u1ea5t) v\u1edbi c\u00e1c \u0111\u01b0\u1eddng d\u1eabn b\u00e1n d\u1eabn song song \u0111\u1ec3 ng\u1eaft c\u1ef1c nhanh. Trong \u0111i\u1ec1u ki\u1ec7n s\u1ef1 c\u1ed1, d\u00f2ng \u0111i\u1ec7n chuy\u1ec3n sang nh\u00e1nh b\u00e1n d\u1eabn trong v\u00f2ng micro gi\u00e2y, sau \u0111\u00f3 ng\u1eaft th\u00f4ng qua t\u1eaft c\u00f3 ki\u1ec3m so\u00e1t. C\u00e1ch ti\u1ebfp c\u1eadn n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi truy\u1ec1n t\u1ea3i HVDC n\u01a1i c\u00e1c b\u1ed9 ng\u1eaft th\u00f4ng th\u01b0\u1eddng g\u1eb7p kh\u00f3 kh\u0103n v\u1edbi vi\u1ec7c d\u1eadp h\u1ed3 quang DC.<\/li>\n<li><strong>C\u00f4ng ngh\u1ec7 song sinh k\u1ef9 thu\u1eadt s\u1ed1<\/strong> cho ph\u00e9p b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n th\u00f4ng qua gi\u00e1m s\u00e1t li\u00ean t\u1ee5c \u0111i\u1ec7n tr\u1edf ti\u1ebfp x\u00fac, hi\u1ec7u su\u1ea5t c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 (\u0111\u1ed1i v\u1edbi b\u1ed9 ng\u1eaft SF6) ch\u1ea5t l\u01b0\u1ee3ng kh\u00ed. C\u00e1c thu\u1eadt to\u00e1n h\u1ecdc m\u00e1y ph\u00e1t hi\u1ec7n c\u00e1c ki\u1ec3u suy gi\u1ea3m tr\u01b0\u1edbc khi x\u1ea3y ra l\u1ed7i, t\u1ed1i \u01b0u h\u00f3a kho\u1ea3ng th\u1eddi gian b\u1ea3o tr\u00ec v\u00e0 gi\u1ea3m th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ngo\u00e0i k\u1ebf ho\u1ea1ch.<\/li>\n<li><strong>Nghi\u00ean c\u1ee9u kh\u00ed thay th\u1ebf<\/strong> ti\u1ebfp t\u1ee5c t\u0103ng c\u01b0\u1eddng, v\u1edbi h\u1ed7n h\u1ee3p fluoronitrile (C4F7N\/CO2) hi\u1ec7n \u0111\u01b0\u1ee3c tri\u1ec3n khai trong b\u1ed9 ng\u1eaft 145kV th\u01b0\u01a1ng m\u1ea1i. C\u00e1c \u1ee9ng c\u1eed vi\u00ean th\u1ebf h\u1ec7 ti\u1ebfp theo bao g\u1ed3m fluoroketone v\u00e0 c\u00e1c h\u1ee3p ch\u1ea5t perfluorinated c\u00f3 GWP &lt;100. Tuy nhi\u00ean, ch\u01b0a c\u00f3 ch\u1ea5t n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi s\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i, hi\u1ec7u su\u1ea5t d\u1eadp h\u1ed3 quang v\u00e0 ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a SF6.<\/li>\n<\/ul>\n<hr>\n<h2>M\u1ee5c H\u1ecfi \u0110\u00e1p Th\u01b0\u1eddng G\u1eb7p<\/h2>\n<h3>H: B\u1ed9 ng\u1eaft m\u1ea1ch d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh c\u00f3 th\u1ec3 ng\u1eaft d\u00f2ng \u0111i\u1ec7n DC kh\u00f4ng?<\/h3>\n<p>\u0110: B\u1ed9 ng\u1eaft m\u1ea1ch d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf cho AC kh\u00f4ng th\u1ec3 ng\u1eaft DC m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady v\u00ec kh\u00f4ng c\u00f3 \u0111i\u1ec3m c\u1eaft kh\u00f4ng d\u00f2ng \u0111i\u1ec7n t\u1ef1 nhi\u00ean. B\u1ed9 ng\u1eaft m\u1ea1ch d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh \u0111\u1ecbnh m\u1ee9c DC y\u00eau c\u1ea7u c\u00e1c thi\u1ebft k\u1ebf chuy\u00ean d\u1ee5ng v\u1edbi t\u1ed1c \u0111\u1ed9 m\u1edf ti\u1ebfp \u0111i\u1ec3m nhanh h\u01a1n 3-5 l\u1ea7n, c\u1ea5u h\u00ecnh m\u00e1ng h\u1ed3 quang n\u00e2ng cao v\u1edbi 15-25 t\u1ea5m chia v\u00e0 th\u01b0\u1eddng l\u00e0 c\u00e1c c\u01a1 ch\u1ebf d\u1eadp h\u1ed3 quang ph\u1ee5 tr\u1ee3. Ngay c\u1ea3 khi \u0111\u00f3, kh\u1ea3 n\u0103ng ng\u1eaft th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n \u1edf 1000V DC v\u00e0 10kA. \u0110\u1ed1i v\u1edbi \u0111\u1ecbnh m\u1ee9c DC cao h\u01a1n, c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng ho\u1eb7c tr\u1ea1ng th\u00e1i r\u1eafn \u0111\u01b0\u1ee3c \u01b0u ti\u00ean h\u01a1n.<\/p>\n<h3>H: B\u1ed9 ng\u1eaft m\u1ea1ch ch\u00e2n kh\u00f4ng duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n ch\u00e2n kh\u00f4ng trong bao l\u00e2u?<\/h3>\n<p>\u0110: B\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng ch\u1ea5t l\u01b0\u1ee3ng duy tr\u00ec ch\u00e2n kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng (&lt;10\u207b\u2074 Pa) trong 20-30 n\u0103m trong \u0111i\u1ec1u ki\u1ec7n b\u00ecnh th\u01b0\u1eddng. V\u00f2ng \u0111\u1ec7m k\u00edn s\u1eed d\u1ee5ng h\u00e0n kim lo\u1ea1i v\u1edbi g\u1ed1m ho\u1eb7c ni\u00eam phong th\u1ee7y tinh v\u1edbi kim lo\u1ea1i kh\u00f4ng b\u1ecb suy gi\u1ea3m theo th\u1eddi gian. Tuy nhi\u00ean, t\u00ednh to\u00e0n v\u1eb9n ch\u00e2n kh\u00f4ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi s\u1ed1c c\u01a1 h\u1ecdc trong qu\u00e1 tr\u00ecnh v\u1eadn chuy\u1ec3n, x\u00f3i m\u00f2n ti\u1ebfp x\u00fac qu\u00e1 m\u1ee9c t\u1ea1o ra c\u00e1c h\u1ea1t kim lo\u1ea1i ho\u1eb7c l\u1ed7i s\u1ea3n xu\u1ea5t. Ki\u1ec3m tra h\u00e0ng n\u0103m b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c th\u1eed nghi\u1ec7m ch\u1ecbu \u0111\u01b0\u1ee3c \u0111i\u1ec7n \u00e1p cao gi\u00e1n ti\u1ebfp x\u00e1c minh ch\u1ea5t l\u01b0\u1ee3ng ch\u00e2n kh\u00f4ng\u2014s\u1ef1 c\u1ed1 \u0111i\u1ec7n \u00e1p cho th\u1ea5y m\u1ea5t ch\u00e2n kh\u00f4ng.<\/p>\n<h3>H: T\u1ea1i sao SF6 v\u1eabn \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng lo ng\u1ea1i v\u1ec1 m\u00f4i tr\u01b0\u1eddng?<\/h3>\n<p>\u0110: SF6 v\u1eabn c\u1ea7n thi\u1ebft cho \u0111i\u1ec7n \u00e1p truy\u1ec1n t\u1ea3i (245kV+) v\u00ec kh\u00f4ng c\u00f3 c\u00f4ng ngh\u1ec7 thay th\u1ebf n\u00e0o hi\u1ec7n cung c\u1ea5p hi\u1ec7u su\u1ea5t t\u01b0\u01a1ng \u0111\u01b0\u01a1ng v\u1edbi chi ph\u00ed v\u00e0 \u0111\u1ed9 tin c\u1eady t\u01b0\u01a1ng \u0111\u01b0\u01a1ng. M\u1ed9t b\u1ed9 ng\u1eaft SF6 420kV ng\u1eaft c\u00e1c s\u1ef1 c\u1ed1 63kA m\u1ed9t c\u00e1ch \u0111\u00e1ng tin c\u1eady trong m\u1ed9t di\u1ec7n t\u00edch nh\u1ecf g\u1ecdn; \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y v\u1edbi ch\u00e2n kh\u00f4ng s\u1ebd y\u00eau c\u1ea7u 8-12 b\u1ed9 ng\u1eaft m\u1eafc n\u1ed1i ti\u1ebfp (l\u00e0m t\u0103ng \u0111\u00e1ng k\u1ec3 x\u00e1c su\u1ea5t h\u1ecfng h\u00f3c), trong khi c\u00e1c lo\u1ea1i kh\u00ed thay th\u1ebf v\u1eabn ch\u01b0a cung c\u1ea5p \u0111\u1ee7 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i. Ng\u00e0nh c\u00f4ng nghi\u1ec7p \u0111ang chuy\u1ec3n sang c\u00e1c ch\u1ea5t thay th\u1ebf SF6 \u1edf \u0111i\u1ec7n \u00e1p ph\u00e2n ph\u1ed1i (72.5-145kV) nh\u01b0ng c\u00e1c \u1ee9ng d\u1ee5ng truy\u1ec1n t\u1ea3i thi\u1ebfu c\u00e1c ch\u1ea5t thay th\u1ebf \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh.<\/p>\n<h3>H: \u0110i\u1ec1u g\u00ec g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng h\u00e0n ti\u1ebfp \u0111i\u1ec3m c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch v\u00e0 c\u00e1c c\u00f4ng ngh\u1ec7 kh\u00e1c nhau ng\u0103n ch\u1eb7n n\u00f3 nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>\u0110: H\u00e0n ti\u1ebfp \u0111i\u1ec3m x\u1ea3y ra khi nhi\u1ec7t h\u1ed3 quang l\u00e0m n\u00f3ng ch\u1ea3y b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac, t\u1ea1o ra li\u00ean k\u1ebft luy\u1ec7n kim. C\u00e1c h\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh s\u1eed d\u1ee5ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m h\u1ed3 quang chuy\u00ean d\u1ee5ng (h\u1ee3p kim \u0111\u1ed3ng-vonfram hy sinh) h\u1ea5p th\u1ee5 n\u0103ng l\u01b0\u1ee3ng h\u1ed3 quang \u0111\u1ed3ng th\u1eddi b\u1ea3o v\u1ec7 c\u00e1c ti\u1ebfp \u0111i\u1ec3m ch\u00ednh. B\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng s\u1eed d\u1ee5ng c\u00e1c ti\u1ebfp \u0111i\u1ec3m \u0111\u1ed3ng-crom c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng h\u00e0n cao, c\u1ed9ng v\u1edbi vi\u1ec7c d\u1eadp h\u1ed3 quang nhanh ch\u00f3ng gi\u1ea3m thi\u1ec3u s\u1ef1 truy\u1ec1n nhi\u1ec7t. B\u1ed9 ng\u1eaft SF6 s\u1eed d\u1ee5ng lu\u1ed3ng kh\u00ed \u0111\u1ec3 l\u00e0m m\u00e1t c\u00e1c ti\u1ebfp \u0111i\u1ec3m ngay sau khi t\u00e1ch, ng\u0103n ch\u1eb7n s\u1ef1 h\u00ecnh th\u00e0nh m\u1ed1i h\u00e0n. \u00c1p su\u1ea5t ti\u1ebfp x\u00fac th\u00edch h\u1ee3p (th\u01b0\u1eddng l\u00e0 150-300N) v\u00e0 l\u1edbp ph\u1ee7 ch\u1ed1ng h\u00e0n c\u0169ng gi\u00fap \u00edch.<\/p>\n<h3>H: \u0110\u1ed9 cao \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch nh\u01b0 th\u1ebf n\u00e0o?<\/h3>\n<p>\u0110: \u0110\u1ed9 cao l\u00e0m gi\u1ea3m m\u1eadt \u0111\u1ed9 kh\u00f4ng kh\u00ed, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn b\u1ed9 ng\u1eaft d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh v\u00e0 SF6 kh\u00e1c nhau. B\u1ed9 ng\u1eaft d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh tr\u1ea3i qua hi\u1ec7u qu\u1ea3 l\u00e0m m\u00e1t gi\u1ea3m \u1edf \u0111\u1ed9 cao tr\u00ean 1.000m\u2014vi\u1ec7c gi\u1ea3m \u0111\u1ecbnh m\u1ee9c kho\u1ea3ng 10%\/1.000m l\u00e0 \u0111i\u1ec3n h\u00ecnh. B\u1ed9 ng\u1eaft SF6 duy tr\u00ec m\u1eadt \u0111\u1ed9 kh\u00ed th\u00f4ng qua c\u1ea5u tr\u00fac k\u00edn, v\u00ec v\u1eady \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u0111\u1ed9 cao l\u00e0 t\u1ed1i thi\u1ec3u tr\u1eeb khi b\u1ed9 ng\u1eaft \u0111\u01b0\u1ee3c m\u1edf \u0111\u1ec3 b\u1ea3o tr\u00ec. B\u1ed9 ng\u1eaft ch\u00e2n kh\u00f4ng kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi \u0111\u1ed9 cao v\u00ec ch\u00fang ho\u1ea1t \u0111\u1ed9ng trong ch\u00e2n kh\u00f4ng b\u1ea5t k\u1ec3 \u00e1p su\u1ea5t b\u00ean ngo\u00e0i. \u0110\u1ed1i v\u1edbi c\u00e1c l\u1eafp \u0111\u1eb7t tr\u00ean 2.000m, h\u00e3y tham kh\u1ea3o \u0111\u01b0\u1eddng cong gi\u1ea3m \u0111\u1ecbnh m\u1ee9c c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t ho\u1eb7c ch\u1ec9 \u0111\u1ecbnh c\u00e1c thi\u1ebft k\u1ebf b\u00f9 \u0111\u1ed9 cao.<\/p>\n<h3>H: T\u00f4i c\u00f3 th\u1ec3 trang b\u1ecb th\u00eam b\u1ed9 ng\u1eaft m\u1ea1ch SF6 b\u1eb1ng c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng kh\u00f4ng?<\/h3>\n<p>\u0110: Vi\u1ec7c thay th\u1ebf tr\u1ef1c ti\u1ebfp th\u01b0\u1eddng kh\u00f4ng kh\u1ea3 thi v\u00ec b\u1ed9 ng\u1eaft SF6 v\u00e0 ch\u00e2n kh\u00f4ng c\u00f3 k\u00edch th\u01b0\u1edbc l\u1eafp \u0111\u1eb7t, c\u01a1 ch\u1ebf ho\u1ea1t \u0111\u1ed9ng v\u00e0 giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n kh\u00e1c nhau. Tuy nhi\u00ean, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t cung c\u1ea5p c\u00e1c s\u1ea3n ph\u1ea9m thay th\u1ebf ch\u00e2n kh\u00f4ng \u201cc\u1eafm v\u00e0o\u201d cho c\u00e1c d\u00f2ng thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft SF6 ph\u1ed5 bi\u1ebfn, duy tr\u00ec c\u00e1c k\u1ebft n\u1ed1i thanh c\u00e1i v\u00e0 di\u1ec7n t\u00edch b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n t\u01b0\u01a1ng t\u1ef1. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i thay th\u1ebf to\u00e0n b\u1ed9 c\u1ee5m b\u1ed9 ng\u1eaft m\u1ea1ch nh\u01b0ng tr\u00e1nh \u0111\u01b0\u1ee3c vi\u1ec7c thay th\u1ebf thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft. Vi\u1ec7c trang b\u1ecb th\u00eam lo\u1ea1i b\u1ecf vi\u1ec7c tu\u00e2n th\u1ee7 m\u00f4i tr\u01b0\u1eddng SF6, gi\u1ea3m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 th\u01b0\u1eddng c\u1ea3i thi\u1ec7n \u0111\u1ed9 tin c\u1eady. Tham kh\u1ea3o c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t nh\u01b0 VIOX Electric \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng t\u01b0\u01a1ng th\u00edch.<\/p>\n<hr>\n<h2>K\u1ebft lu\u1eadn: K\u1ebft h\u1ee3p c\u00f4ng ngh\u1ec7 v\u1edbi \u1ee9ng d\u1ee5ng<\/h2>\n<p>Vi\u1ec7c l\u1ef1a ch\u1ecdn c\u00f4ng ngh\u1ec7 d\u1eadp h\u1ed3 quang v\u1ec1 c\u01a1 b\u1ea3n \u0111\u1ecbnh h\u00ecnh hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch, chi ph\u00ed v\u00f2ng \u0111\u1eddi v\u00e0 t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng. C\u00e1c h\u1ec7 th\u1ed1ng d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh cung c\u1ea5p kh\u1ea3 n\u0103ng b\u1ea3o v\u1ec7 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed cho c\u00e1c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p \u0111i\u1ec7n \u00e1p th\u1ea5p, n\u01a1i thi\u1ebft k\u1ebf nh\u1ecf g\u1ecdn v\u00e0 \u0111\u1ed9 tin c\u1eady \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh l\u00e0 quan tr\u1ecdng nh\u1ea5t. C\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng chi\u1ebfm \u01b0u th\u1ebf trong ph\u00e2n ph\u1ed1i \u0111i\u1ec7n \u00e1p trung b\u00ecnh th\u00f4ng qua ho\u1ea1t \u0111\u1ed9ng kh\u00f4ng c\u1ea7n b\u1ea3o tr\u00ec v\u00e0 an to\u00e0n m\u00f4i tr\u01b0\u1eddng. SF6 v\u1eabn c\u1ea7n thi\u1ebft cho \u0111i\u1ec7n \u00e1p truy\u1ec1n t\u1ea3i m\u1eb7c d\u00f9 c\u00f3 nh\u1eefng lo ng\u1ea1i v\u1ec1 kh\u00ed nh\u00e0 k\u00ednh, m\u1eb7c d\u00f9 c\u00e1c lo\u1ea1i kh\u00ed thay th\u1ebf \u0111ang d\u1ea7n thay th\u1ebf n\u00f3 \u1edf c\u00e1c c\u1ea5p \u0111i\u1ec7n \u00e1p th\u1ea5p h\u01a1n.<\/p>\n<p>\u0110\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0 \u0111i\u1ec7n ch\u1ec9 \u0111\u1ecbnh thi\u1ebft b\u1ecb b\u1ea3o v\u1ec7, ma tr\u1eadn quy\u1ebft \u0111\u1ecbnh ph\u1ea3i xem x\u00e9t c\u1ea5p \u0111i\u1ec7n \u00e1p, c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n s\u1ef1 c\u1ed1, c\u00e1c quy \u0111\u1ecbnh v\u1ec1 m\u00f4i tr\u01b0\u1eddng, kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec v\u00e0 t\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu. M\u1ed9t trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n \u0111\u1ed9ng c\u01a1 480V s\u1eed d\u1ee5ng t\u1ed1i \u01b0u MCCB d\u1eadp h\u1ed3 quang t\u1eeb t\u00ednh; m\u1ed9t thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft ph\u00e2n ph\u1ed1i 12kV \u0111\u01b0\u1ee3c h\u01b0\u1edfng l\u1ee3i t\u1eeb c\u00f4ng ngh\u1ec7 ch\u00e2n kh\u00f4ng; m\u1ed9t tr\u1ea1m bi\u1ebfn \u00e1p 145kV v\u1eabn c\u00f3 th\u1ec3 y\u00eau c\u1ea7u SF6 m\u1eb7c d\u00f9 c\u00f3 chi ph\u00ed m\u00f4i tr\u01b0\u1eddng.<\/p>\n<p>Khi ng\u00e0nh c\u00f4ng nghi\u1ec7p ph\u00e1t tri\u1ec3n theo h\u01b0\u1edbng t\u00edch h\u1ee3p n\u0103ng l\u01b0\u1ee3ng t\u00e1i t\u1ea1o, h\u1ec7 th\u1ed1ng \u0111i\u1ec7n DC v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n m\u00f4i tr\u01b0\u1eddng nghi\u00eam ng\u1eb7t h\u01a1n, c\u00e1c c\u00f4ng ngh\u1ec7 m\u1edbi n\u1ed5i nh\u01b0 b\u1ed9 ng\u1eaft m\u1ea1ch tr\u1ea1ng th\u00e1i r\u1eafn v\u00e0 kh\u00ed thay th\u1ebf s\u1ebd d\u1ea7n \u0111\u1ecbnh h\u00ecnh l\u1ea1i b\u1ed1i c\u1ea3nh n\u00e0y. Tuy nhi\u00ean, v\u1eadt l\u00fd c\u01a1 b\u1ea3n c\u1ee7a vi\u1ec7c d\u1eadp h\u1ed3 quang\u2014cho d\u00f9 th\u00f4ng qua l\u1ef1c \u0111i\u1ec7n t\u1eeb, lo\u1ea1i b\u1ecf m\u00f4i tr\u01b0\u1eddng ho\u1eb7c b\u1eaft gi\u1eef electron\u2014s\u1ebd ti\u1ebfp t\u1ee5c chi ph\u1ed1i thi\u1ebft k\u1ebf b\u1ed9 ng\u1eaft m\u1ea1ch trong nhi\u1ec1u th\u1eadp k\u1ef7 t\u1edbi.<\/p>\n<p>VIOX Electric ti\u1ebfp t\u1ee5c th\u00fac \u0111\u1ea9y c\u1ea3 ba c\u00f4ng ngh\u1ec7 th\u00f4ng qua c\u00e1c c\u01a1 s\u1edf nghi\u00ean c\u1ee9u v\u00e0 s\u1ea3n xu\u1ea5t c\u1ee7a ch\u00fang t\u00f4i, cung c\u1ea5p cho kh\u00e1ch h\u00e0ng c\u00f4ng nghi\u1ec7p, th\u01b0\u01a1ng m\u1ea1i v\u00e0 ti\u1ec7n \u00edch c\u00e1c gi\u1ea3i ph\u00e1p d\u1eadp h\u1ed3 quang t\u1ed1i \u01b0u h\u00f3a cho m\u1ecdi c\u1ea5p \u0111i\u1ec7n \u00e1p v\u00e0 \u1ee9ng d\u1ee5ng. \u0110\u1ec3 bi\u1ebft th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt, h\u01b0\u1edbng d\u1eabn l\u1ef1a ch\u1ecdn ho\u1eb7c c\u00e1c gi\u1ea3i ph\u00e1p b\u1ed9 ng\u1eaft m\u1ea1ch t\u00f9y ch\u1ec9nh, h\u00e3y li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang t\u00f4i.<\/p>\n<hr>\n<h2>T\u00e0i Nguy\u00ean Li\u00ean Quan<\/h2>\n<ul>\n<li><a href=\"https:\/\/test.viox.com\/vi\/what-is-an-arc-in-a-circuit-breaker\/\">H\u1ed3 quang trong m\u00e1y c\u1eaft m\u1ea1ch l\u00e0 g\u00ec?<\/a> \u2013 H\u01b0\u1edbng d\u1eabn k\u1ef9 thu\u1eadt \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 v\u1eadt l\u00fd v\u00e0 s\u1ef1 h\u00ecnh th\u00e0nh h\u1ed3 quang<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/understanding-circuit-breaker-disconnection-the-essential-role-of-electric-arcs\/\">Hi\u1ec3u v\u1ec1 ng\u1eaft m\u1ea1ch c\u1ee7a b\u1ed9 ng\u1eaft m\u1ea1ch: Vai tr\u00f2 thi\u1ebft y\u1ebfu c\u1ee7a h\u1ed3 quang \u0111i\u1ec7n<\/a> \u2013 Nghi\u00ean c\u1ee9u s\u00e2u v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng h\u1ed3 quang<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/types-of-circuit-breakers\/\">C\u00e1c lo\u1ea1i m\u00e1y c\u1eaft m\u1ea1ch<\/a> \u2013 H\u01b0\u1edbng d\u1eabn ph\u00e2n lo\u1ea1i to\u00e0n di\u1ec7n<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/mccb-vs-mcb\/\">MCCB so v\u1edbi MCB<\/a> \u2013 So s\u00e1nh b\u1ed9 ng\u1eaft m\u1ea1ch h\u1ea1 th\u1ebf<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/complete-guide-to-air-circuit-breakers-acb\/\">H\u01b0\u1edbng d\u1eabn \u0111\u1ea7y \u0111\u1ee7 v\u1ec1 M\u00e1y c\u1eaft kh\u00f4ng kh\u00ed (ACB)<\/a> \u2013 \u1ee8ng d\u1ee5ng th\u1ed5i t\u1eeb tr\u01b0\u1eddng<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/dc-vs-ac-circuit-breakers-essential-differences-for-electrical-safety\/\">B\u1ed9 ng\u1eaft m\u1ea1ch DC so v\u1edbi AC: S\u1ef1 kh\u00e1c bi\u1ec7t thi\u1ebft y\u1ebfu<\/a> \u2013 Th\u00e1ch th\u1ee9c d\u1eadp h\u1ed3 quang trong h\u1ec7 th\u1ed1ng DC<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/circuit-breaker-ratings-icu-ics-icw-icm\/\">\u0110\u1ecbnh m\u1ee9c \u00c1pt\u00f4m\u00e1t: ICU, ICS, ICW, ICM<\/a> \u2013 Hi\u1ec3u v\u1ec1 kh\u1ea3 n\u0103ng c\u1eaft<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/current-limiting-circuit-breaker-guide\/\">H\u01b0\u1edbng d\u1eabn v\u1ec1 \u00c1pt\u00f4m\u00e1t H\u1ea1n ch\u1ebf D\u00f2ng \u0111i\u1ec7n<\/a> \u2013 K\u1ef9 thu\u1eadt \u0111i\u1ec7n \u00e1p h\u1ed3 quang ti\u00ean ti\u1ebfn<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/single-break-vs-double-break-mccb-guide\/\">H\u01b0\u1edbng d\u1eabn v\u1ec1 MCCB ng\u1eaft \u0111\u01a1n so v\u1edbi ng\u1eaft \u0111\u00f4i<\/a> \u2013 T\u00e1c \u0111\u1ed9ng c\u1ee7a c\u1ea5u h\u00ecnh ti\u1ebfp \u0111i\u1ec3m<\/li>\n<li><a href=\"https:\/\/test.viox.com\/vi\/acb-vs-vcb\/\">ACB so v\u1edbi VCB<\/a> \u2013 So s\u00e1nh c\u00f4ng ngh\u1ec7 kh\u00ed so v\u1edbi ch\u00e2n kh\u00f4ng<\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Direct Answer Magnetic blowout, vacuum, and SF6 represent three fundamentally different approaches to arc extinction in circuit breakers. Magnetic blowout uses electromagnetic force to physically stretch and cool arcs in air (common in MCCBs and ACBs up to 6.3kA), vacuum technology eliminates the ionization medium entirely for rapid extinction in 3-8ms (ideal for 3-40.5kV systems), [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":21507,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-21505","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"_links":{"self":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/comments?post=21505"}],"version-history":[{"count":1,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21505\/revisions"}],"predecessor-version":[{"id":21506,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/posts\/21505\/revisions\/21506"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media\/21507"}],"wp:attachment":[{"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/media?parent=21505"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/categories?post=21505"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/test.viox.com\/vi\/wp-json\/wp\/v2\/tags?post=21505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}