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

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斷路器本體三相不一致保護(hù)誤動(dòng)原因分析及治理措施

來源:電工電氣發(fā)布時(shí)間:2021-01-23 15:23 瀏覽次數(shù):722

斷路器本體三相不一致保護(hù)誤動(dòng)原因分析及治理措施

宋思齊1,馬勇1,劉媛1,劉詠飛1,劉通1,張珂?zhèn)?sup>2
(1 國網(wǎng)江蘇省電力有限公司電力科學(xué)研究院,江蘇 南京 211103;
2 國網(wǎng)江蘇省電力有限公司檢修分公司,江蘇 南京 211102)
 
摘 要:在實(shí)際運(yùn)行中經(jīng)常出現(xiàn)因斷路器本體三相不一致保護(hù)問題造成的斷路器誤動(dòng)情況發(fā)生。介紹了斷路器本體三相不一致保護(hù)的原理,從繼電器質(zhì)量、運(yùn)行環(huán)境、回路破損等方面分析了三相不一致保護(hù)誤動(dòng)的典型原因,并針對(duì)性的從設(shè)備采購、運(yùn)行維護(hù)、二次回路優(yōu)化改造等角度提出了相應(yīng)的改進(jìn)措施,實(shí)際應(yīng)用表明,經(jīng)過優(yōu)化改進(jìn)后有效避免了斷路器三相不一致保護(hù)誤動(dòng)造成的斷路器異常動(dòng)作。
    關(guān)鍵詞:斷路器;分相操作;三相不一致保護(hù);繼電器;二次回路優(yōu)化
    中圖分類號(hào):TM561     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2021)01-0035-04
 
Analysis and Improvement Measures of Circuit Breaker Three-Phase
Inconsistent Protection for Abnormal Operation
 
SONG Si-qi1, MA Yong1, LIU Yuan1, LIU Yong-fei1, LIU Tong1, ZHANG Ke-wei2
(1 State Grid Jiangsu Electric Power Company Research Institute, Nanjing 2111 03, China;
2 State Grid Jiangsu Electric Power Company Maintenance Branch, Nanjing 2111 02, China)
 
    Abstract: In actual operation, the malfunction of the circuit breaker caused by the three-phase inconsistent protection of the circuit breakerbody often occurs. In this paper the principle of the three-phase inconsistent protection of the circuit breaker body is introduced. The typicalreasons of the misoperation of the three-phase inconsistent protection are analyzed from the aspects of relay quality, operating environment,circuit damage, etc., and aimed at equipment procurement, operation , maintenance, and secondary circuit optimization then correspondingimprovement measures have been proposed from the perspective of transformation. The actual application shows that after optimization andimprovement, the abnormal operation of the circuit breaker caused by the misoperation of the three-phase inconsistent protection of the circuitbreaker is effectively avoided.
    Key words: circuit breaker; phase separation operation mechanism; three-phase inconsistent protection; relay; secondary circuit optimization
 
 
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