短路电流衰减影响发电机过负荷保护的仿真分析  

Simulation Analysis of Short-circuit Current Attenuation Affecting Generator Overload Protection

作　　者：张兵海 王献志 刘清泉 陈天英 张卫明 ZHANG Binghai;WANG Xianzhi;LIU Qingquan;CHEN Tianying;ZHANG Weiming(State Grid Hebei Electric Power Co.,Ltd.Research Institute,Shijiazhuang 050021,China)

机构地区：[1]国网河北省电力有限公司电力科学研究院,河北石家庄050021

出　　处：《河北电力技术》2021年第5期20-23,共4页Hebei Electric Power

摘　　要：结合发电机外部故障时提供的短路电流衰减特性,对衰减过程进行理论计算和仿真,对发电机定子绕组过负荷保护的动作行为进行分析,认为根据《大型发电机变压器继电保护整定计算导则》整定的发电机定子绕组过负荷保护,无法承担发电机变压器组后备保护的作用。Considering the attenuation property of the short circuit current from generator external fault, the paper takes research and simulation on the characteristic of the attenuation course, and does analysis on the theory of the generator stator overload relay protection, gives the view that the protection under the setting standard cannot act as the backup function to the generator-transformer unit.

关 键 词：发电机 定子绕组 过负荷保护 PSCAD 

分 类 号：TM712[电气工程—电力系统及自动化]