基于PSASP的电力系统保护建模分析

发布时间：2018-01-14 08:01

本文关键词：基于PSASP的电力系统保护建模分析　出处：《合肥工业大学》2016年硕士论文　论文类型：学位论文

【摘要】：继电保护是电力系统的重要组成部分,其作用已经不仅仅局限于快速切除故障元件,它在保证整个电网系统安全稳定运行方面起着越来越重要的作用。不论剖析电力系统事故发生的原因及其过程,还是分析电力系统较长时间内动态过程的稳定性问题,保护的动态特性都是不容忽视的。所以利用电力系统动态仿真程序对继电保护的动作过程进行模拟,进而分析电力系统的全过程稳定特性,对避免发生大面积停电事故及研究防止事故扩大的有效措施等都具有重要意义。本文首先对继电保护系统进行深入研究,针对目前电力系统仿真软件中保护模型不完善的问题,以电力系统输电线的保护为主要研究对象,利用电力系统分析综合程序(PSASP)的用户自定义模块针对电流保护、距离保护等多种类型保护原理进行了建模仿真,并以IEEE-39及WEPRI-11系统为算例,验证了搭建模型和采用方法的有效性；然后,分析了隐性故障产生的原因和特点,并针对三段式距离保护由于整定值引起的继电保护隐性故障进行详细的分析,进而针对几种保护隐性故障模式引起的拒动误动情况进行了仿真分析：最后,基于Markov状态空间法,针对高压系统两套主保护及远近后备保护,建立详细的线路-保护状态转移模型,计算由于整定值隐性故障引起的误动概率与拒动概率,并以此给出了一种整定值的优化方法,算例仿真验证了该方法的有效性。
[Abstract]:The relay protection is an important part of power system, its role is not limited to the rapid removal of faulty components, to ensure it plays an increasingly important role in the safe and stable operation of the entire power system. Regardless of causes of power system accidents and analysis process, or stability of the dynamic process of a long time in power system, dynamic the characteristics of protection can not be ignored. So the action process of relay protection simulation program for power system dynamic simulation and analysis of the whole process of stability characteristics of power system, is of great significance to avoid blackouts accident and prevent the accident of the effective measures. Firstly, in-depth research on relay protection in view of the current system, power system simulation software protection model problems in power system, transmission line Protection as the main research object, by power system analysis software package (PSASP) custom module for current protection, distance protection and other types of protection principle of modeling and simulation, and the IEEE-39 and WEPRI-11 system for example, the model was set up and used to verify the validity of the method; then, analyzes the causes and characteristics the hidden fault generated, and for the three phase distance protection setting value because of hidden failures of relay protection caused by the detailed analysis of the dynamic malfunction in the simulation analysis to according to the failure mode caused by several kinds of implicit protection: finally, the Markov based on the state space method, the high voltage system of two sets of main protection and distance backup protection, the establishment of detailed line protection state transition model, setting value calculation due to recessive failure caused by misoperation probability and rejection probability, and thus give a setting The effectiveness of the method is verified by an example simulation.

【学位授予单位】：合肥工业大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TM77;TM743

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