{"id":18060,"date":"2014-09-02T15:21:49","date_gmt":"2014-09-02T08:21:49","guid":{"rendered":"https:\/\/banbientan.com\/?p=18060"},"modified":"2014-09-02T15:21:49","modified_gmt":"2014-09-02T08:21:49","slug":"tu-tu-bu-cong-suat-phan-khang","status":"publish","type":"post","link":"https:\/\/hunglong.banbientan.com\/?p=18060","title":{"rendered":"T\u1ee7 t\u1ee5 b\u00f9 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng"},"content":{"rendered":"

I.T\u1ea1i sao c\u1ea7n c\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t:<\/span><\/span><\/a><\/h3>\n

\"Tu-tu-bu-cos-phi-1<\/a> \"Tu-tu-bu-cos-phi-2\"<\/a><\/span><\/span>
\n<\/span><\/a>
\n1. Ti\u1ebft ki\u1ec7m\u00a0ti\u1ec1n \u0111i\u1ec7n:<\/span><\/strong><\/span><\/h3>\n

– N\u00e2ng cao h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111em l\u1ea1i nh\u1eefng \u01b0u \u0111i\u1ec3m v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 kinh t\u1ebf, nh\u1ea5t l\u00e0 gi\u1ea3m ti\u1ec1n \u0111i\u1ec7n.<\/span>
\n– Trong giai \u0111o\u1ea1n s\u1ee7 d\u1ee5ng \u0111i\u1ec7n c\u00f3 gi\u1edbi h\u1ea1n theo qui \u0111\u1ecbnh. Vi\u1ec7c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n kh\u00e1ng v\u01b0\u1ee3t qu\u00e1 40% n\u0103ng l\u01b0\u1ee3ng t\u00e1c d\u1ee5ng (tg\u03c6 > 0,4: \u0111\u00e2y l\u00e0 gi\u00e1 tr\u1ecb tho\u00e3 thu\u1eadn v\u1edbi c\u00f4ng ty cung c\u1ea5p \u0111i\u1ec7n) th\u00ec ng\u01b0\u1eddi s\u1eed d\u1ee5ng n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n kh\u00e1ng ph\u1ea3i tr\u1ea3 ti\u1ec1n h\u00e0ng th\u00e1ng theo gi\u00e1 hi\u1ec7n h\u00e0nh.<\/span>
\n– Do \u0111\u00f3, t\u1ed5ng n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n kh\u00e1ng \u0111\u01b0\u1ee3c t\u00ednh ti\u1ec1n cho th\u1eddi gian s\u1eed d\u1ee5ng s\u1ebd l\u00e0:<\/span>
\nkVAr ( ph\u1ea3i tr\u1ea3 ti\u1ec1n ) = KWh ( tg\u03c6 \u2013 0,4)<\/span>
\n– M\u1eb7c d\u00f9 \u0111\u01b0\u1ee3c l\u1ee3i v\u1ec1 gi\u1ea3m b\u1edbt ti\u1ec1n \u0111i\u1ec7n, ng\u01b0\u1eddi s\u1eed d\u1ee5ng c\u1ea7n c\u00e2n nh\u1eafc \u0111\u1ebfn y\u1ebfu t\u1ed1 ph\u00ed t\u1ed5n do mua s\u1eafm, l\u1eafp \u0111\u1eb7t b\u1ea3o tr\u00ec c\u00e1c t\u1ee5 \u0111i\u1ec7n \u0111\u1ec3 c\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t.<\/span>
\n2. T\u1ed1i \u01b0u ho\u00e1 kinh t\u1ebf \u2013 k\u1ef9 thu\u1eadt<\/span><\/strong>
\n– C\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t cho ph\u00e9p ng\u01b0\u1eddi s\u1eed d\u1ee5ng m\u00e1y bi\u1ebfn \u00e1p, thi\u1ebft b\u1ecb \u0111\u00f3ng c\u1eaft v\u00e0 c\u00e1p nh\u1ecf h\u01a1n V.V\u2026\u0111\u1ed3ng th\u1eddi gi\u1ea3m t\u1ed5n th\u1ea5t \u0111i\u1ec7n n\u0103ng v\u00e0 s\u1ee5t \u00e1p trong m\u1ea1ng \u0111i\u1ec7n.<\/span>
\n– H\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t cao cho ph\u00e9p t\u1ed1i \u01b0u ho\u00e1 c\u00e1c ph\u1ea7n t\u1eed cung c\u1ea5p \u0111i\u1ec7n. Khi \u1ea5y c\u00e1c thi\u1ebft b\u1ecb \u0111i\u1ec7n kh\u00f4ng c\u1ea7n \u0111\u1ecbnh m\u1ee9c d\u01b0 th\u1eeba. Tuy nhi\u00ean \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ebft qu\u1ea3 t\u1ed1t nh\u1ea5t, c\u1ea7n \u0111\u1eb7t t\u1ee5 c\u1ea1nh c\u1ea1nh t\u1eebng ph\u1ea7n t\u1eed c\u1ee7a thi\u1ebft b\u1ecb ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng.<\/span>
\n* C\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t<\/span>
\n– \u0110\u1ec3 c\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ea1ng \u0111i\u1ec7n, c\u1ea7n m\u1ed9t b\u1ed9 t\u1ee5 \u0111i\u1ec7n l\u00e0m ngu\u1ed3n ph\u00e1t c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng. C\u00e1ch gi\u1ea3i quy\u1ebft n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 b\u00f9 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng.<\/span>
\n-T\u1ea3i mang t\u00ednh c\u1ea3m c\u00f3 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t th\u1ea5p s\u1ebd nh\u1eadn th\u00e0nh ph\u1ea7n d\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng t\u1eeb m\u00e1y ph\u00e1t \u0111\u01b0a \u0111\u1ebfn qua h\u1ec7 th\u1ed1ng truy\u1ec1n t\u1ea3i ph\u00e2n ph\u1ed1i. Do \u0111\u00f3 k\u00e9o theo t\u1ed1n th\u1ea5t c\u00f4ng su\u1ea5t v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p.<\/span>
\n– Khi m\u1eafc c\u00e1c t\u1ee5 song song v\u1edbi t\u1ea3i, d\u00f2ng \u0111i\u1ec7n c\u00f3 t\u00ednh dung c\u1ee7a t\u1ee5 s\u1ebd c\u00f3 c\u00f9ng \u0111\u01b0\u1eddng \u0111i nh\u01b0 th\u00e0nh ph\u1ea7n c\u1ea3m kh\u00e1ng c\u1ee7a d\u00f2ng t\u1ea3i. v\u00ec v\u1eady hai d\u00f2ng \u0111i\u1ec7n n\u00e0y s\u1ebd tri\u1ec7t ti\u00eau l\u1eabn nhau IC = IL. Nh\u01b0 v\u1eady kh\u00f4ng c\u00f2n t\u1ed3n t\u1ea1i d\u00f2ng ph\u1ea3n kh\u00e1ng qua ph\u1ea7n l\u01b0\u1edbi ph\u00eda tr\u01b0\u1edbc v\u1ecb tr\u00ed \u0111\u1eb7t t\u1ee5.<\/span>
\n– \u0110\u1eb7c bi\u1ec7t ta n\u00ean tr\u00e1nh \u0111\u1ecbnh m\u1ee9c \u0111\u1ed9ng c\u01a1 qu\u00e1 l\u1edbn c\u0169ng nh\u01b0 ch\u1ebf \u0111\u1ed9 ch\u1ea1y kh\u00f4ng t\u1ea3i c\u1ee7a \u0111\u1ed9ng c\u01a1. L\u00fac n\u00e0y h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1 r\u1ea5t nh\u1ecf (0,17) do l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t t\u00e1c d\u1ee5ng ti\u00eau th\u1ee5 \u1edf ch\u1ebf \u0111\u1ed9 kh\u00f4ng t\u1ea3i r\u1ea5t nh\u1ecf.<\/span><\/p>\n

II. C\u00e1c thi\u1ebft b\u1ecb b\u00f9 c\u00f4ng su\u1ea5t:<\/span>\u00a0<\/span><\/strong><\/h3>\n

1. B\u00f9 tr\u00ean l\u01b0\u1edbi \u0111i\u1ec7n \u00e1p<\/span><\/strong>
\nTrong m\u1ea1ng l\u01b0\u1edbi h\u1ea1 \u00e1p, b\u00f9 c\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng :<\/span>
\n– T\u1ee5 \u0111i\u1ec7n v\u1edbi l\u01b0\u1ee3ng b\u00f9 c\u1ed1 \u0111\u1ecbnh (b\u00f9 n\u1ec1n).<\/span>
\n– Thi\u1ebft b\u1ecb \u0111i\u1ec1u ch\u1ec9nh b\u00f9 t\u1ef1 \u0111\u1ed9ng ho\u1eb7c m\u1ed9t b\u1ed9 t\u1ee5 cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh li\u00ean t\u1ee5c theo y\u00eau c\u1ea7u khi t\u1ea3i thay \u0111\u1ed5i.<\/span>
\nCh\u00fa \u00fd : Khi c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ea7n b\u00f9 v\u01b0\u1ee3t qu\u00e1 800KVAr v\u00e0 t\u1ea3i c\u00f3 t\u00ednh li\u00ean t\u1ee5c v\u00e0 \u1ed5n \u0111\u1ecbnh, vi\u1ec7c l\u1eafp \u0111\u1eb7t b\u1ed9 t\u1ee5 \u1edf ph\u00eda trung \u00e1p th\u01b0\u1eddng c\u00f3 hi\u1ec7u qu\u1ea3 kinh t\u1ebf t\u1ed1t h\u01a1n.<\/span>
\n2. T\u1ee5 b\u00f9 n\u1ec1n<\/span><\/strong>
\nB\u1ed1 tr\u00ed b\u00f9 g\u1ed3m m\u1ed9t ho\u1eb7c nhi\u1ec1u t\u1ee5 t\u1ea1o n\u00ean l\u01b0\u1ee3ng b\u00f9 kh\u00f4ng \u0111\u1ed5i. vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n:<\/span>
\n– B\u1eb1ng tay: d\u00f9ng CB ho\u1eb7c LBS ( load \u2013 break switch )<\/span>
\n– B\u00e1n t\u1ef1 \u0111\u1ed9ng: d\u00f9ng contactor<\/span>
\n– M\u1eafc tr\u1ef1c ti\u1ebfp v\u00e0o t\u1ea3i \u0111\u00f3ng \u0111i\u1ec7n cho m\u1ea1ch b\u00f9 \u0111\u1ed3ng th\u1eddi khi \u0111\u00f3ng t\u1ea3i.<\/span>
\nC\u00e1c t\u1ee5 \u0111i\u1ec7n \u0111\u01b0\u1ee3c \u0111\u1eb7t:<\/span>
\n– T\u1ea1i v\u1ecb tr\u00ed \u0111\u1ea5u n\u1ed1i c\u1ee7a thi\u1ebft b\u1ecb ti\u00eau th\u1ee5 \u0111i\u1ec7n c\u00f3 t\u00ednh c\u1ea3m ( \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n v\u00e0 m\u00e1y bi\u1ebfn \u00e1p ).<\/span>
\n– T\u1ea1i v\u1ecb tr\u00ed thanh g\u00f3p c\u1ea5p ngu\u1ed3n cho nhi\u1ec1u \u0111\u1ed9ng c\u01a1 nh\u1ecf v\u00e0 c\u00e1c ph\u1ee5 t\u1ea3i c\u00f3 t\u00ednh c\u1ea3m kh\u00e1ng \u0111\u1ed1i v\u1edbi ch\u00fang vi\u1ec7c b\u00f9 t\u1eebng thi\u1ebft b\u1ecb m\u1ed9t t\u1ecf ra qu\u00e1 t\u1ed1n k\u00e9m.<\/span>
\n– Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p khi t\u1ea3i kh\u00f4ng thay \u0111\u1ed5i.<\/span>
\n3. B\u1ed9 t\u1ee5 b\u00f9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng ( b\u00f9 \u1ee9ng \u0111\u1ed9ng )<\/span><\/strong>
\n– B\u00f9 c\u00f4ng su\u1ea5t th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec7n b\u1eb1ng c\u00e1c ph\u01b0\u01a1ng ti\u1ec7n \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3ng ng\u1eaft t\u1eebng b\u1ed9 ph\u1eadn c\u00f4ng su\u1ea5t.<\/span>
\n– Thi\u1ebft b\u1ecb n\u00e0y cho ph\u00e9p \u0111i\u1ec1u khi\u1ec3n b\u00f9 c\u00f4ng su\u1ea5t m\u1ed9t c\u00e1ch t\u1ef1 \u0111\u1ed9ng, gi\u1eef h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t trong m\u1ed9t gi\u1edbi h\u1ea1n cho ph\u00e9p chung quanh gi\u00e1 tr\u1ecb h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111\u01b0\u1ee3c ch\u1ecdn.<\/span>
\n– Thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c l\u1eafp \u0111\u1eb7t t\u1ea1i c\u00e1c v\u1ecb tr\u00ed m\u00e0 c\u00f4ng su\u1ea5t t\u00e1c d\u1ee5ng v\u00e0 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng thay \u0111\u1ed5i trong ph\u1ea1m vi r\u1ea5t r\u1ed9ng. v\u00ed d\u1ee5: t\u1ea1i thanh g\u00f3p c\u1ee7a t\u1ee7 ph\u00e2n ph\u1ed1i ch\u00ednh, t\u1ea1i \u0111\u1ea7u n\u1ed1i c\u1ee7a c\u00e1c c\u00e1p tr\u1ee5c ch\u1ecbu t\u1ea3i l\u1edbn.<\/span>
\nC\u00e1c nguy\u00ean l\u00fd v\u00e0 l\u00fd do s\u1eed d\u1ee5ng b\u00f9 t\u1ef1 \u0111\u1ed9ng:<\/span>
\n– B\u1ed9 t\u1ee5 b\u00f9 g\u1ed3m nhi\u1ec1u ph\u1ea7n v\u00e0 m\u1ed7i ph\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n b\u1eb1ng contactor. Vi\u1ec7c \u0111\u00f3ng m\u1ed9t contactor s\u1ebd \u0111\u00f3ng m\u1ed9t s\u1ed1 t\u1ee5 song song v\u1edbi c\u00e1c t\u1ee5 v\u1eadn h\u00e0nh. V\u00ec v\u1eady l\u01b0\u1ee3ng c\u00f4ng su\u1ea5t b\u00f9 c\u00f3 th\u1ec3 t\u0103ng hay gi\u1ea3m theo t\u1eebng c\u1ea5p b\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n \u0111\u00f3ng ho\u1eb7c c\u1eaft contactor \u0111i\u1ec1u khi\u1ec3n t\u1ee5. M\u1ed9t r\u01a1ley \u0111i\u1ec1u khi\u1ec3n ki\u1ec3m so\u00e1t h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a m\u1ea1ng \u0111i\u1ec7n s\u1ebd th\u1ef1c hi\u1ec7n \u0111\u00f3ng v\u00e0 m\u1edf c\u00e1c contactor t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ea3 h\u1ec7 th\u1ed1ng thay \u0111\u1ed5i ( v\u1edbi sai s\u1ed1 do \u0111i\u1ec1u ch\u1ec9nh t\u1eebng b\u1eadc ). \u0110\u1ec3 \u0111i\u1ec1u khi\u1ec3n r\u01a1le m\u00e1y bi\u1ebfn d\u00f2ng ph\u1ea3i \u0111\u1eb7t l\u00ean m\u1ed9t pha c\u1ee7a d\u00e2y c\u00e1p d\u1eabn \u0111i\u1ec7n cung c\u1ea5p \u0111\u1ebfn m\u1ea1ch \u0111\u01b0\u1ee3c \u0111i\u1ec1u khi\u1ec3n. Khi th\u1ef1c hi\u1ec7n b\u00f9 ch\u00ednh x\u00e1c b\u1eb1ng c\u00e1c gi\u00e1 tr\u1ecb t\u1ea3i y\u00eau c\u1ea7u s\u1ebd tr\u00e1nh \u0111\u01b0\u1ee3c hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 \u0111i\u1ec7n \u00e1p khi t\u1ea3i gi\u1ea3m xu\u1ed1ng th\u1ea5p v\u00e0 do \u0111\u00f3 kh\u1eed b\u1ecf c\u00e1c \u0111i\u1ec1u ki\u1ec7n ph\u00e1t sinh qu\u00e1 \u0111i\u1ec7n \u00e1p v\u00e0 tr\u00e1nh c\u00e1c thi\u1ec7t h\u1ea1i x\u1ea3y ra cho trang thi\u1ebft b\u1ecb.<\/span>
\n– Qu\u00e1 \u0111i\u1ec7n \u00e1p xu\u1ea5t hi\u1ec7n do hi\u1ec7n t\u01b0\u1ee3ng b\u00f9 d\u01b0 ph\u1ee5 thu\u1ed9c m\u1ed9t ph\u1ea7n v\u00e0o gi\u00e1 tr\u1ecb t\u1ed5ng tr\u1edf ngu\u1ed3n.<\/span>
\nC\u00e1c qui t\u1eafc b\u00f9 chung<\/span>
\n– N\u1ebfu c\u00f4ng su\u1ea5t b\u1ed9 t\u1ee5 ( kVar ) nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 15% c\u00f4ng su\u1ea5t \u0111\u1ecbnh m\u1ee9c m\u00e1y bi\u1ebfn \u00e1p c\u1ea5p ngu\u1ed3n, n\u00ean s\u1eed d\u1ee5ng b\u00f9 n\u1ec1n.<\/span>
\n– N\u1ebfu \u1edf tr\u00ean m\u1ee9c 15%, n\u00ean s\u1eed d\u1ee5ng b\u00f9 ki\u1ec3u t\u1ef1 \u0111\u1ed9ng.<\/span>
\n– V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t t\u1ee5 \u00e1p trong m\u1ea1ng \u0111i\u1ec7n c\u00f3 t\u00ednh \u0111\u1ebfn ch\u1ebf \u0111\u1ed9 b\u00f9 c\u00f4ng su\u1ea5t; ho\u1eb7c b\u00f9 t\u1eadp trung, b\u00f9 nh\u00f3m, b\u00f9 c\u1ee5c b\u1ed9, ho\u1eb7c b\u00f9 k\u1ebft h\u1ee3p hai ph\u01b0\u01a1ng \u00e1n sau c\u00f9ng.<\/span>
\n– V\u1ec1 nguy\u00ean t\u1eafc, b\u00f9 l\u00fd t\u01b0\u1edfng c\u00f3 ngh\u0129a l\u00e0 b\u00f9 \u00e1p d\u1ee5ng cho t\u1eebng th\u1eddi \u0111i\u1ec3m ti\u00eau th\u1ee5 v\u00e0 v\u1edbi m\u1ee9c \u0111\u1ed9 m\u00e0 ph\u1ee5 t\u1ea3i y\u00eau c\u1ea7u cho m\u1ed7i th\u1eddi \u0111i\u1ec3m.<\/span>
\n– Trong th\u1ef1c ti\u1ec5n, vi\u1ec7c ch\u1ecdn ph\u01b0\u01a1ng c\u00e1ch b\u00f9 d\u1ef1a v\u00e0o c\u00e1c h\u1ec7 s\u1ed1 kinh t\u1ebf v\u00e0 k\u1ef9 thu\u1eadt.<\/span>
\nV\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t t\u1ee5 b\u00f9:<\/span>
\n3.1 B\u00f9 t\u1eadp trung : \u00e1p d\u1ee5ng cho t\u1ea3i \u1ed5n \u0111\u1ecbnh v\u00e0 li\u00ean t\u1ee5c.<\/span><\/strong>
\nNguy\u00ean l\u00fd : b\u1ed9 t\u1ee5 \u0111\u1ea5u v\u00e0o thanh g\u00f3p h\u1ea1 \u00e1p c\u1ee7a t\u1ee7 ph\u00e2n ph\u1ed1i ch\u00ednh v\u00e0 \u0111\u01b0\u1ee3c \u0111\u00f3ng trong th\u1eddi gian t\u1ea3i ho\u1ea1t \u0111\u1ed9ng.<\/span>
\n\u01afu \u0111i\u1ec3m:<\/span>
\n– Gi\u1ea3m ti\u1ec1n ph\u1ea1t do v\u1ea5n \u0111\u1ec1 ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng .<\/span>
\n– L\u00e0m gi\u1ea3m c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn.<\/span>
\n– L\u00e0m nh\u1eb9 t\u1ea3i cho m\u00e1y bi\u1ebfn \u00e1p v\u00e0 do \u0111\u00f3 n\u00f3 c\u00f3 kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n th\u00eam c\u00e1c ph\u1ee5 t\u1ea3i c\u1ea7n thi\u1ebft.<\/span>
\nNh\u1eadn x\u00e9t :<\/span>
\n– D\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng ti\u1ebfp t\u1ee5c \u0111i v\u00e0o t\u1ea5t c\u1ea3 l\u1ed9 ra t\u1ee7 ph\u00e2n ph\u1ed1i ch\u00ednh c\u1ee7a m\u1ea1ng h\u1ea1 th\u1ebf.<\/span>
\n– V\u00ec l\u00fd do n\u00e0y k\u00edch c\u1ee1 d\u00e2y d\u1eabn , c\u00f4ng su\u1ea5t t\u1ed5n hao kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u1edf ch\u1ebf \u0111\u1ed9 b\u00f9 t\u1eadp trung.<\/span>
\n3.2 B\u00f9 nh\u00f3m ( t\u1eebng ph\u00e2n \u0111o\u1ea1n ).<\/span><\/strong>
\nB\u00f9 nh\u00f3m n\u00ean s\u1eed d\u1ee5ng khi m\u1ea1ng \u0111i\u1ec7n qu\u00e1 l\u1edbn v\u00e0 khi ch\u1ebf \u0111\u1ed9 t\u1ea3i ti\u00eau th\u1ee5 theo th\u1eddi gian c\u1ee7a c\u00e1c ph\u00e2n \u0111o\u1ea1n thay \u0111\u1ed5i kh\u00e1c nhau.<\/span>
\nNguy\u00ean l\u00fd : b\u1ed9 t\u1ee5 \u0111\u01b0\u1ee3c \u0111\u1ea5u v\u00e0o t\u1ee7 ph\u00e2n ph\u1ed1i khu v\u1ef1c . hi\u1ec7u qu\u1ea3 do b\u00f9 nh\u00f3m mang l\u1ea1i cho d\u00e2y d\u1eabn xu\u1ea5t ph\u00e1t t\u1eeb t\u1ee7 ph\u00e2n ph\u1ed1i ch\u00ednh \u0111\u1ebfn c\u00e1c t\u1ee7 khu v\u1ef1c c\u00f3 \u0111\u1eb7t t\u1ee5 \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n r\u00f5 nh\u1ea5t.<\/span>
\n\u01afu \u0111i\u1ec3m:<\/span>
\n– L\u00e0m gi\u1ea3m ti\u1ec1n ph\u1ea1t do v\u1ea5n \u0111\u1ec1 ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng.<\/span>
\n– L\u00e0m gi\u1ea3m c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn y\u00eau c\u1ea7u.<\/span>
\n– K\u00edch th\u01b0\u1edbc d\u00e2y c\u00e1p \u0111i \u0111\u1ebfn c\u00e1c t\u1ee7 ph\u00e2n ph\u1ed1i khu v\u1ef1c s\u1ebd gi\u1ea3m \u0111i ho\u1eb7c v\u1edbi c\u00f9ng d\u00e2y c\u00e1p tr\u00ean c\u00f3 th\u1ec3 t\u0103ng th\u00eam ph\u1ee5 t\u1ea3i cho t\u1ee7 ph\u00e2n ph\u1ed1i khu v\u1ef1c.<\/span>
\nNh\u1eadn x\u00e9t :<\/span>
\n– D\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng ti\u1ebfp t\u1ee5c \u0111i v\u00e0o t\u1ea5t c\u1ea3 d\u00e2y d\u1eabn xu\u1ea5t ph\u00e1t t\u1eeb t\u1ee7 ph\u00e2n ph\u1ed1i khu v\u1ef1c.<\/span>
\n– V\u00ec l\u00fd do n\u00e0y m\u00e0 k\u00edch th\u01b0\u1edbc v\u00e0 c\u00f4ng su\u1ea5t t\u1ed5n hao trong d\u00e2y d\u1eabn n\u00f3i tr\u00ean kh\u00f4ng \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n v\u1edbi ch\u1ebf \u0111\u1ed9 b\u00f9 nh\u00f3m.<\/span>
\n– Khi c\u00f3 s\u1ef1 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 c\u1ee7a t\u1ea3i, lu\u00f4n lu\u00f4n t\u1ed3n t\u1ea1i nguy c\u01a1 b\u00f9 d\u01b0 v\u00e0 k\u00e8m theo hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 \u0111i\u1ec7n \u00e1p.<\/span>
\n3.3 B\u00f9 ri\u00eang:<\/span><\/strong>
\nB\u00f9 ri\u00eang n\u00ean \u0111\u01b0\u1ee3c x\u00e9t \u0111\u1ebfn khi c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1 l\u1edbn \u0111\u00e1ng k\u1ebf so v\u1edbi m\u1ea1ng \u0111i\u1ec7n.<\/span>
\nNguy\u00ean l\u00fd: b\u1ed9 t\u1ee5 m\u1eafc tr\u1ef1c ti\u1ebfp v\u00e0o \u0111\u1ea7u d\u00e2y n\u1ed1i c\u1ee7a thi\u1ebft b\u1ecb d\u00f9ng \u0111i\u1ec7n c\u00f3 t\u00ednh c\u1ea3m ( ch\u1ee7 y\u1ebfu l\u00e0 c\u00e1c \u0111\u1ed9ng c\u01a1 ).<\/span>
\nB\u1ed9 t\u1ee5 \u0111\u1ecbnh m\u1ee9c ( kVAr) \u0111\u1ebfn kho\u1ea3ng 25% gi\u00e1 tr\u1ecb c\u00f4ng su\u1ea5t \u0111\u1ed9ng c\u01a1. B\u00f9 b\u1ed5 sung t\u1ea1i \u0111\u1ea7u ngu\u1ed3n \u0111i\u1ec7n c\u0169ng c\u00f3 th\u1ec3 mang l\u1ea1i hi\u1ec7u qu\u1ea3 t\u1ed1t.<\/span>
\n\u01afu \u0111i\u1ec3m :<\/span>
\nL\u00e0m gi\u1ea3m ti\u1ec1n ph\u1ea1t do ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng (kVAr)<\/span>
\nGi\u1ea3m c\u00f4ng su\u1ea5t bi\u1ec3u ki\u1ebfn y\u00eau c\u1ea7u.<\/span>
\nGi\u1ea3m k\u00edch th\u01b0\u1edbc v\u00e0 t\u1ed5n hao d\u00e2y d\u1eabn \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 d\u00e2y d\u1eabn.<\/span>
\nNh\u1eadn x\u00e9t :<\/span>
\nC\u00e1c d\u00f2ng \u0111i\u1ec7n ph\u1ea3n kh\u00e1ng c\u00f3 gi\u00e1 tr\u1ecb l\u1edbn s\u1ebd kh\u00f4ng c\u00f2n t\u1ed3n t\u1ea1i trong m\u1ea1ng \u0111i\u1ec7n.<\/span>
\n3.4 M\u1ee9c \u0111\u1ed9 b\u00f9 t\u1ed1i \u01b0u<\/span><\/strong>
\nPh\u01b0\u01a1ng ph\u00e1p chung<\/span>
\nB\u1ea3ng s\u1ed1 li\u1ec7u t\u00ednh to\u00e1n c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ea7n thi\u1ebft trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf. qua \u0111\u00f3 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng v\u00e0 c\u00f4ng su\u1ea5t t\u00e1c d\u1ee5ng cho m\u1ee9c \u0111\u1ed9 b\u00f9 kh\u00e1c nhau.<\/span>
\nV\u1ea5n \u0111\u1ec1 t\u1ed1i \u01b0u ho\u00e1 kinh t\u1ebf k\u1ef9 thu\u1eadt cho m\u1ed9t m\u1ea1ng \u0111i\u1ec7n \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/span>
\nVi\u1ec7c t\u00ednh to\u00e1n \u0111\u1ecbnh m\u1ee9c b\u00f9 t\u1ed1i \u01b0u cho m\u1ed9t m\u1ea1ng \u0111\u00e3 t\u1ed3n t\u1ea1i c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n theo nh\u1eefng l\u01b0u \u00fd sau:<\/span>
\n+ Ti\u1ec1n \u0111i\u1ec7n tr\u01b0\u1edbc khi \u0111\u1eb7t b\u00f9<\/span>
\n+ Ti\u1ec1n \u0111i\u1ec7n t\u01b0\u01a1ng lai sau khi l\u1eafp t\u1ee5 b\u00f9.<\/span>
\n+ C\u00e1c chi ph\u00ed bao g\u1ed3m :<\/span>
\n– Mua t\u1ee5 b\u00f9 v\u00e0 m\u1ea1ch \u0111i\u1ec1u khi\u1ec3n.<\/span>
\n– L\u1eafp \u0111\u1eb7t v\u00e0 b\u1ea3o tr\u00ec<\/span>
\n– T\u1ed5n th\u1ea5t trong t\u1ee5 v\u00e0 t\u1ed5n th\u1ea5t tr\u00ean d\u00e2y c\u00e1p, m\u00e1y bi\u1ebfn \u00e1p sau khi l\u1eafp t\u1ee5 b\u00f9.<\/span><\/p>\n

III. Ch\u1ecdn T\u1ee5 B\u00f9 :<\/span><\/strong><\/h3>\n

1. Ph\u01b0\u01a1ng ph\u00e1p t\u00ednh \u0111\u01a1n gi\u1ea3n:<\/span><\/strong>
\n(\u0111\u1ec3 ch\u1ecdn t\u1ee5 b\u00f9 cho m\u1ed9t t\u1ea3i n\u00e0o \u0111\u00f3 th\u00ec ta c\u1ea7n bi\u1ebft c\u00f4ng su\u1ea5t(P) c\u1ee7a t\u1ea3i \u0111\u00f3 v\u00e0 h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t (Cos \u03c6) c\u1ee7a t\u1ea3i \u0111\u00f3):<\/span>
\nGi\u1ea3 s\u1eed ta c\u00f3 c\u00f4ng su\u1ea5t c\u1ee7a t\u1ea3i l\u00e0 P<\/span>
\nH\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t c\u1ee7a t\u1ea3i l\u00e0 Cos \u03c61\u00a0<\/span>\u2192<\/span><\/span>\u00a0tg \u03c61 ( tr\u01b0\u1edbc khi b\u00f9 )<\/span><\/span>
\nH\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t sau khi b\u00f9 l\u00e0 Cos \u03c62\u00a0<\/span>\u2192<\/span><\/span>\u00a0tg \u03c62.<\/span><\/span>
\nC\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ea7n b\u00f9 l\u00e0 QC = P (tg\u03c61 \u2013 tg\u03c62 ).<\/span>
\nT\u1eeb c\u00f4ng su\u1ea5t c\u1ea7n b\u00f9 ta ch\u1ecdn t\u1ee5 b\u00f9 cho ph\u00f9 h\u1ee3p trong b\u1ea3ng catalog c\u1ee7a nh\u00e0 cung c\u1ea5p t\u1ee5 b\u00f9.<\/span>
\n\u0110\u1ec3 d\u1ec5 hi\u1ec3u ta s\u1ebd cho v\u00ed d\u1ee5 minh ho\u1ea1 nh\u01b0 sau:<\/span>
\nGi\u1ea3 s\u1eed ta c\u00f3 c\u00f4ng su\u1ea5t t\u1ea3i l\u00e0 P = 270 (KW).<\/span>
\nH\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t tr\u01b0\u1edbc khi b\u00f9 l\u00e0 cos\u03c61 = 0.75\u00a0<\/span>\u2192<\/span><\/span>\u00a0tg\u03c61 = 0.88<\/span><\/span>
\nH\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t sau khi b\u00f9 l\u00e0 Cos\u03c62 = 0.95\u00a0<\/span>\u2192<\/span><\/span>\u00a0tg\u03c62 = 0.33<\/span><\/span>
\nV\u1eady c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng c\u1ea7n b\u00f9 l\u00e0 Qb\u00f9 = P ( tg\u03c61 \u2013 tg\u03c62 )<\/span>
\nQb\u00f9 = 270( 0.88 \u2013 0.33 ) = 148.5 (KVAr)<\/span>
\nT\u1eeb s\u1ed1 li\u1ec7u n\u00e0y ta ch\u1ecdn t\u1ee5 b\u00f9 trong b\u1ea3ng catalog c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t gi\u1ea3 s\u1eed l\u00e0 ta c\u00f3 t\u1ee5 25KVAr. \u0110\u1ec3 b\u00f9 \u0111\u1ee7 cho t\u1ea3i th\u00ec ta c\u1ea7n b\u00f9 6 t\u1ee5 25 KVAr t\u1ed5ng c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 6\u00d725=150(KVAr) v\u1edbi 6 t\u1ee5 b\u00f9 n\u00e0y ta ch\u1ecdn b\u1ed9 \u0111i\u1ec1u khi\u1ec3n 6 c\u1ea5p nh\u01b0 s\u01a1 \u0111\u1ed3 h\u00ecnh v\u1ebd:<\/span>
\n2. Ph\u01b0\u01a1ng ph\u00e1p b\u00f9 t\u1ed1i \u01b0u d\u1ef1a v\u00e0o \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng \u0111\u00f3ng ti\u1ec1n ph\u1ea1t:<\/span><\/strong>
\nX\u00e9t ho\u00e1 \u0111\u01a1n ti\u1ec1n \u0111i\u1ec7n li\u00ean quan \u0111\u1ebfn dung l\u01b0\u1ee3ng kVArh \u0111\u00e3 ti\u00eau th\u1ee5 v\u00e0 ghi nh\u1eadn s\u1ed1 kVArh ph\u1ea3i tr\u1ea3 ti\u1ec1n sau \u0111\u00f3, ch\u1ecdn ho\u00e1 \u0111\u01a1n ti\u1ec1n gi\u00e1 kVArh cao nh\u1ea5t ph\u1ea3i tr\u1ea3 (kh\u00f4ng x\u00e9t \u0111\u1ebfn tr\u01b0\u1eddng h\u1ee3p ngo\u1ea1i l\u1ec7).<\/span>
\nV\u00ed d\u1ee5: 15965 kVArh trong th\u00e1ng gi\u00eang<\/span>
\nT\u00ednh t\u1ed5ng th\u1eddi gian ho\u1ea1t \u0111\u1ed9ng trong th\u00e1ng \u0111\u00f3 v\u00ed d\u1ee5 : 220h s\u1ed1 gi\u1edd x\u00e9t \u0111\u1ec3 t\u00ednh l\u00e0 nh\u1eefng gi\u1edd m\u00e0 h\u1ec7 th\u1ed1ng \u0111i\u1ec7n ch\u1ecbu t\u1ea3i l\u1edbn nh\u1ea5t v\u00e0 t\u1ea3i \u0111\u1ea1t gi\u00e1 tr\u1ecb \u0111\u1ec9nh cao nh\u1ea5t. ngo\u00e0i th\u1eddi gian k\u1ec3 tr\u00ean vi\u1ec7c ti\u00eau th\u1ee5 c\u00f4ng su\u1ea5t ph\u1ea3n kh\u00e1ng l\u00e0 mi\u1ec5n ph\u00ed.<\/span>
\nGi\u00e1 tr\u1ecb c\u00f4ng su\u1ea5t c\u1ea7n b\u00f9:<\/span>
\n[kVAr] = = Qb\u00f9<\/span>
\nkVAr : s\u1ed1 kVAr ph\u1ea3i tr\u1ea3 ti\u1ec1n.<\/span>
\nT : s\u1ed1 gi\u1edd ho\u1ea1t \u0111\u1ed9ng<\/span>
\nDung l\u01b0\u1ee3ng b\u00f9 th\u01b0\u1eddng \u0111\u01b0\u1ee3c ch\u1ecdn cao h\u01a1n gi\u00e1 tr\u1ecb t\u00ednh to\u00e1n m\u1ed9t ch\u00fat.<\/span>
\nM\u1ed9t s\u1ed1 h\u00e3ng cung c\u1ea5p qui t\u1eafc th\u01b0\u1edbc loga thi\u1ebft k\u1ebf \u0111\u1eb7t bi\u1ec7t cho vi\u1ec7c t\u00ednh to\u00e1n n\u00e0y theo c\u00e1c khung gi\u00e1 ri\u00eang. C\u00f4ng c\u1ee5 tr\u00ean v\u00e0 c\u00e1c d\u1eef li\u1ec7u k\u00e8m theo gi\u00fap ta ch\u1ecdn l\u1ef1a thi\u1ebft b\u1ecb b\u00f9 v\u00e0 s\u01a1 \u0111\u1ed3 \u0111i\u1ec1u khi\u1ec3n th\u00edch h\u1ee3p, \u0111\u1ed3ng th\u1eddi r\u00e0ng bu\u1ed9c c\u1ee7a c\u00e1c s\u00f3ng h\u00e0i \u0111i\u1ec7n \u00e1p trong h\u1ec7 th\u1ed1ng \u0111i\u1ec7n . c\u00e1c s\u00f3ng h\u00e0i n\u00e0y \u0111\u00f2i h\u1ecfi s\u1eed d\u1ee5ng \u0111\u1ecbnh m\u1ee9c t\u1ee5 d\u01b0 ( li\u00ean quan \u0111\u1ebfn gi\u1ea3i nhi\u1ec7t, \u0111\u1ecbnh m\u1ee9c \u00e1p v\u00e0 d\u00f2ng \u0111i\u1ec7n ) v\u00e0 c\u00e1c cu\u1ed9n kh\u00e1ng ho\u1eb7c m\u1ea1ch \u0111\u1ec3 l\u1ecdc s\u00f3ng h\u00e0i.<\/span><\/p>\n

<\/h3>\n

 
\n <\/p>\n","protected":false},"excerpt":{"rendered":"

I.T\u1ea1i sao c\u1ea7n c\u1ea3i thi\u1ec7n h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t: 1. Ti\u1ebft ki\u1ec7m\u00a0ti\u1ec1n \u0111i\u1ec7n: – N\u00e2ng cao h\u1ec7 s\u1ed1 c\u00f4ng su\u1ea5t \u0111em l\u1ea1i nh\u1eefng \u01b0u \u0111i\u1ec3m v\u1ec1 k\u1ef9 thu\u1eadt v\u00e0 kinh t\u1ebf, nh\u1ea5t l\u00e0 gi\u1ea3m ti\u1ec1n \u0111i\u1ec7n. – Trong giai \u0111o\u1ea1n s\u1ee7 d\u1ee5ng \u0111i\u1ec7n c\u00f3 gi\u1edbi h\u1ea1n theo qui \u0111\u1ecbnh. Vi\u1ec7c ti\u00eau th\u1ee5 n\u0103ng l\u01b0\u1ee3ng ph\u1ea3n […]<\/p>\n","protected":false},"author":2,"featured_media":18061,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[11499],"tags":[12811,12812],"class_list":["post-18060","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-tu-dong-hoa","tag-tu-bu","tag-tu-bu-cos-phi"],"_links":{"self":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/18060","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18060"}],"version-history":[{"count":0,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/wp\/v2\/posts\/18060\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=\/"}],"wp:attachment":[{"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18060"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18060"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hunglong.banbientan.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18060"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}