电工技术学报2012，Vol.27Issue(10)：270-276,7.
基于电网络理论的变电站接地网腐蚀及断点诊断方法
Fault Diagnosis for Grounding Grids Based on Electric Network Theory
许磊 1李琳1
作者信息
- 1. 华北电力大学新能源电力系统国家重点实验室,北京102206
- 折叠
摘要
Abstract
The grounding grid of substation is buried under the ground.The soil acid and alkali induce the grid corrosion,which leads to the grounding performance deteriorated and threatens the safety operation of the power system.In this paper,the grounding grid is treated as a pure resistance network.By using the actual ground grid topology and the measured voltages between grounding leads and the ground,the fault diagnosis equations are built base on the Tellegen theorem.By means of optimization methods solving the fault diagnosis equations the resistance changes in the each branch are obtained,and the corrosion degree of grounding grid is judged,and then the position of the fault is found.Through comparing the results calculated and measured,the practicality of diagnosis method of grounding grids is verified.关键词
接地网/特勒根定理/优化技术/故障诊断Key words
Grounding grid/Tellegen theorem/optimization/fault diagnosis分类
信息技术与安全科学引用本文复制引用
许磊,李琳..基于电网络理论的变电站接地网腐蚀及断点诊断方法[J].电工技术学报,2012,27(10):270-276,7.
