关岭地区变电站二次系统过电压研究

Overvoltage research of secondary system in Guanling area substation

选取关岭地区110kV天桥变电站和35kV永宁电站变这两个雷击事故高发的变电站作为研究地点,通过雷雨季节的监测,从雷电计数器上采集的数据进行分析,得知电压互感器二次回路必须采取切实可行的办法进行浪涌电流保护,才可以保护变电站二次设备的安全运行。

This paper selected 110 kV Tianqiao Substation and 110 kV Yongning Substation as research site. Through the monitoring of the thunderstorm season, from the analysis of the thunder counter data collection, the voltage transformer secondary circuit must adopt- ed feasible method for surge current protection to protect the safe operation of the substation secondary equipment.