论大型地网评估试验

Research on experiment of large grounding grid valuation

通过对铁岭电厂500kV和220kV两个等级变电站接地网、厂区接地网电气参数测量,明确了大型地网的评估试验在实际中的应用,事实证明:采用类工频的变频法测量能有效地消除工频干扰,为各厂、网开展大型地网评估提供了宝贵的经验。

This paper analyzes the electrical parameters measured at the grounding grid of the 500 kV and 220 kV substations and workshop in the Tieling Power Plant, and confirms the application of valuation tests to the large grounding grid.