摘要
某500 kV线路YN线发生纵联差动保护单侧跳闸动作,通过对装置录波波形分析,原因是雷电对线路干扰冲击,造成线路主保护单侧跳闸。建议对保护装置的算法进行优化,同时采用更加灵敏的避雷器,以保证500kV主网的安全稳定运行。
The occurrence of a 500 kV YN-line longitudinal d tripping unilateral action, through the device recorded waveform anal interference on the line due to lightning, causing the side trips of the ifferential Y li sis, the protection impact of ne primary protect Suggested to optimize algorithm of the protection devices, using a more sensitive lightning arrester, to ensure stable operation of the 500 kV main grid.
出处
《内蒙古电力技术》
2014年第2期59-61,共3页
Inner Mongolia Electric Power
关键词
500
KV线路
纵联差动保护
雷电波
单侧动作
500 kV line
longitudinal differential protection
lightning wave
unilateral action
