Suzhou Electric Appliance Research Institute
期刊號: CN32-1800/TM| ISSN1007-3175

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3.6~40.5 kV斷路器容性負載開合試驗回路研究

來源:電工電氣發(fā)布時間:2021-07-19 15:19 瀏覽次數:652

3.6~40.5 kV斷路器容性負載開合試驗回路研究

康志林,胡新明,羅園
(甘肅電器科學研究院,甘肅 天水 741018)
 
    摘 要:高壓斷路器( 尤其是真空斷路器) 開合容性電流時,會產生電壓和電流的暫態(tài)現象,可能導致很高的過電壓和關合涌流,甚至會導致重擊穿對電網造成嚴重威脅。對電容性負載的使用工況進行了分析,設計了適用于 3.6~40.5 kV 電壓等級的試驗回路以滿足該電壓等級的開關試驗,并探討了高壓斷路器容性電流開合試驗方法。該試驗回路在大容量試驗室得到了很好的應用,各項容性開合試驗數據均符合標準要求。
    關鍵詞:高壓斷路器;容性電流開合;直接試驗;試驗方法
    中圖分類號:TM561     文獻標識碼:A     文章編號:1007-3175(2021)07-0052-03
 
Research on Capacitive Load Switching Test
Circuit of 3.6~40.5 kV Circuit-Breaker
 
KANG Zhi-lin, HU Xin-ming, LUO Yuan
(Gansu Electrical Apparatus Science Research Institute, Tianshui 741018, China)
 
    Abstract: When the high voltage circuit-breaker(especially the vacuum circuit-breaker)switches capacitive current, the transient phenomena of voltage and current will appear which probably causes excessive overvoltage and inrush current, or even causes a restrike threatening the security of power grid. In this paper, the operating condition of capacitive load is analyzed, and the test circuit suitable for 3.6~40.5 kV voltage is designed to meet the requirements of the switch tests, and additionally, the capacitive current switching test of high voltage circuit breaker is discussed. Lastly, this test circuit is applied well in the large-capacity laboratory, and all the testing data of capacitive switching
conform to the standard.
    Key words: high voltage circuit-breaker; capacitive current switching; direct test; test method
 
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