2號(hào)機(jī)輔變倒送電帶負(fù)荷校驗(yàn)方案及試驗(yàn)分析
唐海燕
（中核集團(tuán)三門核電有限公司，浙江 臺(tái)州 317112）
摘 要：針對三門核電2號(hào)機(jī)組輔變倒送電期間負(fù)荷不足、母差及輔變差動(dòng)保護(hù)無法校驗(yàn)的問題，采用一次通流和沖擊電流校驗(yàn)?zāi)覆頒T極性，采用調(diào)整變壓器有載分接開關(guān)擋位使兩臺(tái)并聯(lián)變壓器產(chǎn)生環(huán)流的方式校驗(yàn)輔變差動(dòng)CT極性。試驗(yàn)結(jié)果分析表明，該方法能夠可靠地校驗(yàn)?zāi)覆罨芈泛洼o變差動(dòng)保護(hù)回路正確性，為后續(xù)機(jī)組調(diào)試用電、機(jī)組試運(yùn)和并網(wǎng)發(fā)電提供了保障。
關(guān)鍵詞：倒送電；通流；沖擊電流；帶負(fù)荷校驗(yàn)
中圖分類號(hào)：TM77 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：1007-3175(2016)04-0036-04
Inverse Power Transmission On-Load Verification Scheme of Unit 2 Auxiliary Transformer and Test Analysis
TANG Hai-yan
（Sanmen Nuclear Power Company Limited, Taizhou 317112, China）
Abstract: In allusion to the problem, such as insufficient load, incapable verification of busbar and auxilary transformer differential protection during the period of inverse power transmission of unit 2 auxilary transformer in Sanmen nuclear power station, The rising current of primary equipment, the inrush current and the parallel running mode of transformers were used to verify the current transformer (CT) polarity. The test results show that this method can reliably verify the correctness of busbar and auxilary transformer differential protection circuits, which provides guarantee for the follow-up unit debugging power utilization unit test running and grid connection generation.
Key words: inverse power transmission; through-flow; surge current; on-load verification
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