摘要
根据大型水轮发电机定子绕组的结构 ,建立了新的接地故障时零序电压的数字仿真模型 ,探讨了水轮发电机发生定子接地故障后机端和中性点侧零序电压的变化规律。在此基础上 ,提出了一种简化的数字仿真模型 。
New simulation models for the zero--sequence voltage of large salient--generator during a stator ground fault arepresented. For the realization of digital simulation. equivalent circuits based on the actual condition of stator coil-groups havebeen built according to the distribution of zero--sequence voltage. The law of zero--sequence voltage changing at machineterminal and neutral point during stator ground fault is investigated also. Based on these simulation models, a simpler modelis described, which can be used for the analysis of protection scheme for stator ground fault.This project is supported by the National key Scientific and Technical Project of the Ninth Five--Year Plan.
出处
《电力系统自动化》
EI
CSCD
北大核心
2000年第9期19-22,31,共5页
Automation of Electric Power Systems
基金
国家重大科技项目 (攻关 )计划! ( 97-3 12 -0 6-2 -2 a)
关键词
水轮发电机
数字仿真
定子绕组
接地
故障
hydro-generator
stator ground fault
zero-sequence voltage
digital simulation
