基于特勒根定理的接地网故障诊断方法  

Diagnosis Method for Ground Grid Faults Based on Tellegen's Theorem

作　　者：许磊[1] 邹园[1] 

机构地区：[1]华北电力大学电气工程学院,河北保定071003

出　　处：《广东电力》2011年第10期15-19,24,共6页Guangdong Electric Power

基　　金：国家自然科学基金资助项目(5097726)

摘　　要：为实现不开挖、不停电情况下对接地网故障的检测,建立了接地网数学模型,利用其拓扑结构和接地引线间的电压测量数据,根据特勒根定理建立接地网故障诊断方程。利用MATLAB迭代优化算法解数学模型得到接地网故障后各支路的电阻值,从而判断接地网的腐蚀程度。采用PSpice软件对接地网进行仿真计算和模拟试验,仿真结果与实际情况吻合,验证了基于特勒根定理的接地网故障诊断方程的基本理论和方法是正确、可行的。In order to detect the ground grid faults without excavating or power cut, a mathematical model of ground grid is built. By using measured data of voltage between its topological structure and grounding conductor, an equation for diagnosis of ground grid faults is formulated in accordance to Tellegen＇s theorem. MATLAB iterative optimization algorithm is adopt- ed for solution to mathematical model and resistance value of each subcircuit after failure is concluded, thus corrosion degree of ground grid is judged. PSpice is adopted for simulation calculation and analogue experiment on ground grid. Simulation re- sult is in conformity with the actuality, which proves basic principles and approaches of diagnosis method for ground grid faults based on Tellegen＇s theorem are correct and workable.

关 键 词：接地网 特勒根定理 优化技术 故障诊断 

分 类 号：TM862[电气工程—高电压与绝缘技术]