基于MATLAB的电力系统内部过电压仿真分析  

Internal Overvoltage Simulation Analysis of Electric Power System Based on MATLAB

作　　者：张景轩 Zhang Jing-xuan(School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,Heilongjiang Province,China)

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《科学与信息化》2023年第12期118-122,共5页Technology and Information

摘　　要：电力系统的安全运行在特高压电能传输过程中占有重要地位。由系统内部故障或开关操作引发的过电压称为内部过电压,它会严重破坏电力系统的安全稳定运行。系统内部过电压包括暂时过电压和操作过电压,本文利用MATLAB的Simulink仿真软件,建立工频过电压、空载线路合闸过电压和空载线路分闸过电压三种内部过电压形式的等值仿真电路,通过观察不同线路长度下的波形,找到高效抑制工频过电压的方法,并得出相应的结论。The safe operation of electric power system occupies an important position in the process of ultra-high voltage electric energy transmission.The overvoltage caused by the internal fault or switching operation of the system is called internal overvoltage,which will seriously damage the safe and stable operation of the electric power system.The internal overvoltage of the system includes temporary overvoltage and operating overvoltage.This paper uses the Simulink simulation software of MATLAB to establish the equivalent simulation circuit in three forms of internal overvoltage:power frequency overvoltage,no-load line closing overvoltage and no-load line opening overvoltage,and find an efficient method to suppress power frequency overvoltage by observing the waveform under different line lengths,and obtain corresponding conclusions.

关 键 词：电力系统内部过电压 工频过电压 空载线路合闸过电压 空载线路分闸过电压 MATLAB Simulink 

分 类 号：TM8[电气工程—高电压与绝缘技术]