无刷励磁发电机转子绕组接地检测新原理的研究  

Study on rotor one point to ground fault protection for brushless exciting generator

作　　者：王佼[1] 

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003

出　　处：《江西电力》2012年第2期12-14,46,共4页Jiangxi Electric Power

摘　　要：无刷励磁励发电机只在励端装有一个测量电刷,固定引出转子绕组的负端,无法应用乒乓式转子接地保护原理,为此本文提出了注入式、乒乓式联合使用的接地保护方案并采用Matlab/Simulink软件构建转子一点接地故障仿真模型。仿真试验结果表明,该保护方案能够满足无刷励磁发电机实际运行需要的精度和灵敏度,可以保证无刷励磁机组的安全运行。进而,文章提出了保护装置外配参数的最佳范围值和转子接地保护双重化配置方案。In view of the problem of current rotor ground fault protection used in brushless exciting generator, This paper advances using the advanced using one end DC voltage injection ping-pong type of rotor ground fault protection to build one-point ground protection. This paper build rotor winding earth fault simulation models based on Matlab software and what the experiment results manifest is that the proposed method can satisfy the needs of preciseness and delicacy for brushless exciting generator.Then, the rational range of parameter values are given and redundant sets of protection scheme is proposed.

关 键 词：无刷励磁 一点接地保护 励磁电压 仿真 

分 类 号：TM31[电气工程—电机]