基于MATLAB的特高压断路器瞬态恢复电压研究  

Study on Transient Recovery Voltage of UHV Circuit Breaker Based on MATLAB

作　　者：郑艳彬 敬涛 慕德凯 刘鹏 王琼 ZHENG Yanbin;JING Tao;MU Dekai;LIU Peng;WANG Qiong(Shandong Electrie Power T＆T Engineering Company Co., Ltd., Jinan 250118, China;State Grid Juxian Power Supply Company,Rizhao 276500, China;State Grid Linyi Power Supply Company, Linyi 276000, China;State Grid Zaozhuang Power Supply Company, Zaozhuang 277100, China)

机构地区：[1]山东送变电工程有限公司,山东济南250118 [2]国网山东莒县供电公司,山东日照276500 [3]国网山东省电力公司临沂供电公司,山东临沂276000 [4]国网山东省电力公司枣庄供电公司,山东枣庄277100

出　　处：《山东电力技术》2018年第3期48-52,共5页Shandong Electric Power

摘　　要：瞬态恢复电压(TRV)是断路器开断的重要参数,同时也是引起断路器故障的主要原因之一,特高压的电压等级较高,使得TRV更加严重,应该进行认真研究。依据瞬态恢复电压的研究现状,使用MATLAB/Simulink建立一条特高压交流输电线路模型,在不同位置设置不同的故障类型,仿真结果表明在断路器端部发生三相短路时的TRV峰值最大,并给出断路器端部发生三相短路时的TRV波形和短路电流波形。在断路器端部发生三相短路故障时,产生的TRV最严重,其幅值和上升率均超过IEC和国家标准标准值,严重考验着断路器的开断能力和抗压能力。给出了相应的抑制断路器TRV的措施。Transient recovery voltage（TRV）is an important parameter of circuit breaker,which is also one of the main reason causing the breaker failure.The higher voltage level of UHV makes TRV more serious.A UHV AC transmission line model is established by using MATLAB/Simulink,and different fault types are set up in different positions.The simulation results show that the peak value of TRV is the maximum when the three-phase short-circuit occurs at the end of the circuit breaker.The TRV waveform and short circuit current waveform at the end of the circuit breaker are also given.When a three-phase short circuit fault occurs at the end of the breaker,the TRV is the most serious and its amplitude and rise rate exceed the standard values of IEC and national standard,which seriously tests the interrupting ability and the compressive capacity of the circuit breaker.The corresponding measures to restrain TRV of circuit breaker are given.

关 键 词：断路器 瞬态恢复电压 MATLAB建模 仿真分析 

分 类 号：TM561[电气工程—电器]