斷路器跳位監(jiān)視與防跳回路的分析與改進(jìn)
葉晴煒
云南省電力設(shè)計(jì)院，云南 昆明 650051
摘 要：某變電站252 kV SF6瓷柱式斷路器防跳回路因設(shè)計(jì)缺陷使斷路器跳位監(jiān)視回路存在寄生回路，導(dǎo)致操作箱對(duì)斷路器的跳位監(jiān)視發(fā)生錯(cuò)誤。分析了防跳回路對(duì)跳位監(jiān)視回路的影響，并對(duì)比了550 kV H-GIS斷路器出現(xiàn)的類似問題。闡述了成因和解決方法，對(duì)防跳回路的設(shè)計(jì)提出了改進(jìn)，在跳位監(jiān)視回路中串聯(lián)斷路器常閉輔助節(jié)點(diǎn)和就地防跳繼電器的常閉節(jié)點(diǎn)，以解決寄生回路對(duì)跳位監(jiān)視的影響。
關(guān)鍵詞：跳位監(jiān)視；防跳回路；斷路器
中圖分類號(hào)：TM561.3 文獻(xiàn)標(biāo)識(shí)碼：B 文章編號(hào)：1007-3175(2015)02-0032-03
Analysis and Improvement on Open-Position Monitoring and Anti-Pumping Circuit of Circuit Breaker
YE Qing- wei
Yunnan Electric Power Design Institute, Kunming 650051, China
Abstract: The anti-pumping circuit of a 252 kV SF6 circuit breaker used in a certain substation existed parasitic circuits in its open-position circuit because of design deficiency, which caused the operation box to make mistakes towards the open-position monitoring of the circuit breaker. This paper analyzed the effect of the anti-pumping circuit on the open-position monitoring circuit, and compared with a similar phenomenon that happened to the 550 kV H-GIS circuit breaker. The factor and solution has been explained, and it has also proposed improvement towards the design of the anti-pumping circuit. In the open-position monitoring circuit, the normally closed auxiliary nodal point of the circuit breaker was connected in series to the normally closed nodal point in in-site anti-pumping relay of the circuit breaker to remove the effect of parasitic circuits on open-position monitoring.
Key words: open-position monitoring; anti-pumping circuit; circuit breaker
參考文獻(xiàn)
[1] 高山，卞超.斷路器防跳回路缺陷分析[J].高壓開關(guān)，2007，24(3)：35-37.
