摘要
分析了一起220kV输电线路非典型发展性故障开关跳闸的一系列异常现象,此次跳闸后保护的动作情况比较复杂,表面现象扑朔迷离,甚至根据录波图看来保护有误动的嫌疑。然而,根据LFP-901和LFP-902的原理和故障时的录波图,对这些现象一个个去分析,论证了本次保护动作为正确动作。
This paper analyzes a series of abnormal phenomena during the trip of a 220kV line caused by the developing fault. The action of delay protection is so complex that no one could tell the truth at once. But according to the logic of LFP-901, LFP-902 and the fault diagram, the answer became more and more clearly. It is proved the action of the unit is right at last.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2008年第23期105-108,共4页
Power System Protection and Control
作者简介
潘茗(1980-),女,助理工程师,从事变电站运行工作,E—mail:gxysmd@163.com
张静伟(1981-),男,硕士研究生,从事继电保护工作。