故障電流限制器頻繁永久閉鎖合閘的原因分析及改進
于軍1,吳金祥1,王少華2
1 浙江省電力公司檢修分公司,浙江 杭州 310009;
2 浙江省電力公司電力科學研究院,浙江 杭州 310014
摘 要: 介紹了華東500 kV 瓶窯變電所故障電流限制器在線路負荷電流正常增加過程中,頻繁出現(xiàn)的光通道閥損壞、主動旁路保護動作及永久閉鎖合閘情況,分析了導致故障電流限制器頻繁永久閉鎖合閘的根本原因,提出了修改閥控與監(jiān)測系統(tǒng)程序,增大閥高電位控制單元檢測時間,以及增加監(jiān)控后臺遠方復歸功能的改進方法,為變電站無人值班提供了技術(shù)支撐。
關(guān)鍵詞: 故障電流限制器;永久閉鎖;手動復歸;閥基電子設備;遠方復歸
中圖分類號:TM506 文獻標識碼:B 文章編號:1007-3175(2013)11-0029-03
Cause Analysis and Improvement of Frequently Permanent Close of Fault Current Limiter
YU Jun1, WU Jin-xiang1, WANG Shao-hua2
1 Maintenance Branch of Zhejiang Electric Power Corporation, Hangzhou 310009, China;
2 Electric Power Research Institute of Zhejiang Electric Power Corporation, Hangzhou 310014, China
Abstract: For the fault current limiter in 500 kV Pingyao substation, introduction was made to the phenomena such as optical channel valve damage, active bypass protection action and permanent closing in the normal increasing process of line load current. This paper analyzed fundamental causes making the fault current limiter frequently permanent closing; raised modifying valve control and monitoring system programs; increased test time of thyristor control unit and added to monitor the remote reset function, which provided technical support for unattended substation.
Key words: fault current limiter; permanent close; hand reset; valve-based electronic device; remote reset
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