摘要
高压开关柜在电力系统中具有重要的地位,但是运行经验表明,局部放电是其绝缘出现损坏的征兆,所以对局部放电进行检测是必要的。局部放电会导致暂态对地电压的产生,据此可对局部放电源进行检测。为掌握瞬时对地电压(TEV)信号的特点,通过有限差分法进行了仿真分析,为现场应用提供了理论依据。
High - voltage switch cabinet has an important position in power system, but the operation experiences show that the partial discharge is a sign of its insulation damage, so the partial discharge test is necessary. Partial discharge can lead to the transient voltage, so this method can be used to detect the power supply of partial discharge. In order to master the character- istics of transient earth voltage （TEV） signals, the simulation analysis is carried out by the finite difference method, which provides a guiding significance for field application.
出处
《四川电力技术》
2014年第2期68-71,共4页
Sichuan Electric Power Technology
关键词
开关柜
局部放电
TEV
仿真
switch cabinet
partial discharge
transient earth voltage （TEV）
simulation
