电容式电压互感器二次端子箱接地点虚接对现场检定的影响

The Effect of Electric Ground Points Virtual Connection on the Substation Field Verification in CVT Secondary Terminal Box

介绍了电容式电压互感器的原理及实物接线,将二次端子箱接地点虚接分为3种等效电路,并提出预防措施和解决方案,提高了检定效率,避免了重大电力系统事故发生。

The capacitor voltage transformer （CVT） is widely used in electric power system. The principle and physical connection of CVT are introduced. Electric ground points virtual connection electric ground points virtual connection has three kinds of equivalent cir- cuits. The preventive measures and solution are presented, which can improve efficient in verification and avoid the happenings of serious electric power accidents.