10kV配电网串联补偿电容内部故障的诊断方法  

Diagnostic of D-FSC capacitor internal fault for 10 kV distribution network

作　　者：陈璞 任勇 陈可[2] 江道灼[2] 陈峰[2] 毕仁明 

机构地区：[1]南网贵州供电公司,贵州贵阳市550001 [2]浙江大学电气工程学院,浙江杭州310027 [3]浙江桂容谐平科技有限责任公司,浙江杭州310030

出　　处：《机电工程》2015年第7期987-990,999,共5页Journal of Mechanical & Electrical Engineering

摘　　要：针对配网固定串联补偿电容内部故障问题,先简单分析了固定串联电容器(D-FSC)在辐射状配电线路中改善电压特性的基本原理,并介绍了串补装置结构图以及对配网固定串联电容器中电容器内部结构及系统接线进行了数学建模。在补偿电容器出现内部故障时,给出一种内部故障诊断的判据,同时提出在系统谐波影响下判据的改进方法,并通过Matlab/Simulink仿真和实验对新型判据进行验证。研究结果表明,所提出的判据能有效地对谐波影响下的系统进行故障诊断,效果优于常规方法。Aiming at the problem of internal fault of D-FSC capacitor,the basic principle of distribution-fixed series capacitor（ D-FSC） improving the voltage profile of radial distribution line was simply analyzed,as well the structurechart of it was introduced and the mathematical models of D-FSC internal structure and system wiring were established. Therefore a diagnostic criterion of capacitor internal fault was given when internal fault occurs,as well an improved method was put forward to deal with the system harmonic. Finally,the criterion was verified by Matlab / Simulink and experiment. The research results indicate that the criterion proposed performed effectively in internal fault diagnosis with the system harmonic,and is better than conventional method.

关 键 词：配网固定串联电容器 系统谐波 数学建模 新型判据 

分 类 号：TM712[电气工程—电力系统及自动化]