变电站接地网故障诊断的研究

针对查找变电站接地网电气连接故障点或腐蚀段所用方法存在盲目、工作量大、速度慢等问题，通过对接地网故障诊断的理论分析，采用灵敏度分析法建立了故障诊断方程，将能量最低原理及优化技术引入地网故障诊断方程的求解中，解决了欠定方程的求解问题，并编制了相应的诊断计算软件。通过仿真计算和模拟试验验证了该方法的正确性、可行性及实用性，其仿真计算和模拟试验结果与预先假定的情况基本一致。

Research on Failure Diagnosis of Substation Ground Network

Aiming at the blind,tiring and slow method conventionally used in locating electric connection fault points or corroded sections in substation ground network,the failure diagnostic equation has been put up through theoretical analysis and sensitivity analysis.Meanwhile,by introducing the lowest energy theory and optimization technique to the failure diagnostic equation of ground network,the problem of morbid equation solution has been effectively solved.And the corresponding diagnosis calculation software has been programmed.The method is testified to be correct,feasible and practical by means of a lot of simulation calculation and tests.The results of simulating calculation and tests are basically consistent with the results of assumption in advance.