地磁感应电流对电网设备的影响与治理方法

Effect of ground induced current on power grid equipment and its tackling

太阳活动引发的磁暴是全球性自然灾害,磁暴在输电线路上产生地磁感应电流(G IC)对电力系统设备的安全运行有很大影响。论述了电网G IC对电力系统设备的主要危害,并根据电网G IC产生机理和主要特征,对几种可行治理技术特点进行了分析,指出G IC是长距离输电系统、大规模电网应关注的问题。

Magnetic storm caused by the sun activity is a global natural disaster, ground induced current （GIC） in transmission lines caused by magnetic storm has a great effect on the safe operation of power system equipment. The main effect of GIC on power system equipment was discussed, some tackling technology available was analyzed according to the mechanism producing GIC and main features, it is pointed that a long distance transmission system and lager scale power grid should pay much attention to GIC.