复杂电力系统电气故障电磁暂态数字计算方法研究  

A NEW ELECTROMAGNETIC TRANSIENTS SIMULATION METHOD FOR ELECTRIC FAULTS IN COMPLEX POWER SYSTEM

作　　者：束洪春[1] 司大军[2] 陈学允[2] 

机构地区：[1]昆明理工大学,云南省昆明市650051 [2]哈尔滨工业大学,黑龙江省哈尔滨市150001

出　　处：《电网技术》2003年第12期31-36,共6页Power System Technology

基　　金：云南省科技攻关项目(2000B2-02);云南省应用基础研究项目(98E0409M;99E006G;2002E0025M);云南省中青年学术和技术带头人培养经费资助。

摘　　要：电力系统电磁暂态的数值仿真研究是一个历久不衰的研究题目,尤其是其时域仿真研究中的Bergeron模型经Dommel实用化改进后,业已成功地应用于著名的EMTP当中,但EMTP的严重不足在于对各种故障和操作进行暂 态仿真前的预处理工作是相当繁杂的。文章针对EMTP使用中的不足,提出了一种普遍适用的电力系统电气故障电磁暂态仿真方法。该方法克服了EMTP由于系统结构或参数改变需要重新计算初始值的缺点,它可以仿真包括串补线路在内的单、双回线路任意点的电弧故障、母线故障、断路器开合和断线故障,并且故障起始角可以设定。新方法可极其方便地对线路故障点序列系列冲击电流、过电压和谐波分量进行系列数字仿真,亦可极其方便地仿真发展型故障,在线路保护仿真校验和过电压计算等方面极具意义。大量仿真表明,本方法精度高、速度快。The study on digital simulation of electro-magnetic transients is an everlasting topic in the research of power system. Especially, after improved by Dommel, the time-domain Bergeron model is successfully applied in EMTP, but the pre-processing before simulating transients caused by various faults and operations is quite troublesome. A new electromagnetic transients simulation method which can be versatilely used to calculate most of the electric faults in power system is presented. Unlike EMTP, it is not necessary for the presented method to calculate the initial values of the system again when the structure or parameter of the system is changed. Meanwhile, the faults occurred at any location of single- and double-circuit lines including series compensated lines, bus faults, operation of breakers and open-circuit faults can be simulated by this method. In addition, the fault-start-angle can be set in the method. Because the new method can conveniently simulate not only inrush currents, overvoltages and harmonics components at different fault locations, but also developing faults, it is significant in the simulation of line protection verification and overvoltage computation. The results from lots of tests show that the method is accurate and fast.

关 键 词：电力系统 电气故障 电磁暂态 数字计算方法 数值仿真 时域仿真 

分 类 号：TM744[电气工程—电力系统及自动化] TM743