500 kV斷路器機構控制回路雙重化改造分析及應用
劉秋英，張澤良，李強
(廣東電網公司佛山供電局，廣東 佛山 528000)
摘 要： 鑒于500 kV 斷路器不能快速切除故障將存在直流換相失敗的風險，二次系統必須滿足“N-1”要求。闡述了某500 kV 斷路器機構控制回路的原理和不足，結合現場對其雙重化改造進行分析，并提出了施工改造調試過程中的注意事項。建議在新投或者技改工程中，對斷路器廠家嚴格要求其第一、二路分閘回路在電氣方面的獨立性，保障電網的安全穩定運行。
關鍵詞： 斷路器；控制回路；雙重化改造；調試
中圖分類號：TM561 文獻標識碼：B 文章編號：1007-3175(2014)01-0033-04
Analysis and Application for Double Transformation of 500 kV Circuit-Breaker Machine Control Circuit
LIU Qiu-ying, ZHANG Ze-liang, LI Qiang
（Foshan Power Supply Bureau, Guangdong Power Grid Corp, Foshan 528000, China）
Abstract: There exists the risk of DC commutation failure because a 500 kV circuit breaker is unable to eliminate fault fast, so the secondary system has to meet the “N-1” requirements. This paper expatiated on the principle and insufficiency of certain 500 kV circuit-breaker machine control circuit and combined with on-site condition to analyze and to discuss its double transformation in depth. The raised caution items in the process of construction transformation debugging provided references for fellow traders. This paper suggested that in the process of new bidding project or technique reforming project, the enterprise of circuit breakers should be strictly required to be independent of primary and secondary breaking circuits in electrical aspect, so as to ensure safe and stable operation of grid.
Key words: circuit breaker; control circuit; double transformation; debugging
參考文獻
[1] GB/T 14285-2006 繼電保護和安全自動裝置技術規程[S].
[2] 廣東省電力調度中心.廣東省電力系統繼電保護反事故措施及釋義(2007版)[S].廣州：廣東省電力調度中心，2007.
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