一起GIL单相永久接地故障范围分析
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摘要
针对锦屏一级水电站内500 kV GIL曾发生的一起短路接地故障,利用线路保护、故障录波和稳控装置所测得的故障电流,结合500 kV保护配置图来综合判断故障范围,从而为线路开关是否具备合环运行和线路是否具备试送条件提供了依据。
A short circuit grounding fault is observed in the 500 kV GIL in Jinping I Hydropower Station. Based on the fault current values measured by the line protection device, the fault recorder and the stability control device, and the protection configuration diagram, possible location of the fault is determined. It could be useful reference to judge whether the circuit switches are of closed-loop operation conditions and whether the circuit is of commissioning qualification.
A short circuit grounding fault is observed in the 500 kV GIL in Jinping I Hydropower Station. Based on the fault current values measured by the line protection device, the fault recorder and the stability control device, and the protection configuration diagram, possible location of the fault is determined. It could be useful reference to judge whether the circuit switches are of closed-loop operation conditions and whether the circuit is of commissioning qualification.
引文
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[4]莫彦宁. 故障录波数据的继电保护动作特性分析[J]. 企业技术开发, 2014, 33(29): 82-83
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[2]范建斌. 气体绝缘金属封闭输电线路及其应用[J]. 中国电力, 2008, 41(8): 38-43
[3]郑绍军, 马海波. 500kV线路永久性接地故障的分析判断[J]. 电气技术, 2010(5): 86-89
[4]莫彦宁. 故障录波数据的继电保护动作特性分析[J]. 企业技术开发, 2014, 33(29): 82-83
[5]徐振宇. 浅谈电力系统稳定控制装置在发电厂的应用[J]. 电子世界, 2014(18): 70