多触指刀闸式接地开关短路关合过程动稳定性仿真分析  

Simulation Analysis on Dynamic Stability During Short-Circuit Closing Process of MTKS-ES

作　　者：万永峰 吕鹏瑞 郭鹏[1] WAN Yongfeng;L Pengrui;GUO Peng(Unit 91526,Zhanjiang 524000,China;Shanghai Electrical Apparatus Research Institute(Group)Co.,Ltd.,Shanghai 200063,China)

机构地区：[1]91526部队,广东湛江524000 [2]上海电器科学研究所(集团)有限公司,上海200063

出　　处：《电器与能效管理技术》2024年第5期75-81,共7页Electrical & Energy Management Technology

摘　　要：接地开关是电力系统中使用量较大、应用较广的设备之一,其稳定性与可靠性对电网的运行安全起着重要作用。仿真研究多触指刀闸式接地开关短路关合过程的动稳定性。首先搭建接地开关短路关合故障系统模型,分析接地开关载流特点;其次以接地开关为物理模型,分析关合过程状态并进行短路电流时域匹配;最后对接地开关关合过程中的动稳定性进行仿真分析。结果表明,接地开关短路电流时域匹配法可以分析接地开关关合过程中短路电流对动稳定性的影响,为大容量接地开关结构设计研发提供参考。Earthing switch(ES)is one of the widely used equipment in the power system,and its stability and reliability play an important role in the safe operation of the power grid.The dynamic stability simulation research on the short-circuit closing process of multi touch knife switch(MTKS)ES is conducted.Firstly,a simulation model of the short-circuit closing process of the ES is built and the characteristics of the current during short-circuit closing of the ES is analyzed.Secondly,the ES is used as the physical model to analyze the closing process status and perform the time-domain matching of short-circuit current.Finally,the dynamic stability during the closing process is simulated and analyzed.The results indicate that the time domain matching method for short-circuit current of ES can analyze the impact of short-circuit current on dynamic stability during the closing process of ES,which has certain guiding significance for the design and development of high capacity ES structures.

关 键 词：接地开关 关合能力 动稳定性 时域匹配法 

分 类 号：TM564[电气工程—电器]