基于Matlab的小电流接地系统故障特征仿真分析  

The Simulation and Analysis on the Fault of Small Current Grounding Power System Based on Matlab

作　　者：谷天聪 范兴明[1] 张鑫[1] 

机构地区：[1]桂林电子科技大学电气工程及其自动化系,桂林541004

出　　处：《电气工程学报》2017年第2期20-25,共6页Journal of Electrical Engineering

基　　金：国家自然科学基金(51067002);广西科学研究与技术开发项目(桂科重1348003-8);广西制造系统与先进制造技术重点实验室主任课题(13-051-09-002Z)资助

摘　　要：本文采用Matlab软件的动态仿真工具Simulink及其电力系统工具箱PSB对小电流接地系统进行故障仿真,论述了模型的搭建步骤。主要分析了接地类故障零序电压、零序电流的波形特征;分析了两相短路、三相短路短路电流的波形特征;分析了两相接地短路系统零序分量以及故障相电压的波形特征。对系统的主要故障线路始端以及故障区段两端波形进行仿真,观察波形更易于识别各故障的主要特征,了解不同故障波形特征的差异,进而便于后续故障检测以及故障识别的研究,为小电流接地系统故障规律分析提供了依据,对于小电流接地系统故障检测算法与检测设备的研制具有重要意义。The small current grounding power system is simulated based on the dynamic simulation tool Simulink and simpower system toolbox. The model＇ s creation has been discussed. The zero sequence voltage and zero sequence current waveform characteristics are mainly analyzed for single phase to earth fault. The short circuit current waveform characteristics are analyzed for two phase short circuit, three-phase short circuit. The characteristics of zero sequence current, zero sequence voltage and fault phase voltage are analyzed. Through the simulation of the main fault waveform of the system, the main waveform characteristics of each fault, the difference of the characteristics of different fault waveform can be fully understood, which is conducive to the subsequent fault detection and identification.It provides a basis for fault analysis and research of small current grounding system, and it has important significance for the research of fault detection algorithm and equipment in small current grounding system.

关 键 词：MATLAB 模型 分析 检测 

分 类 号：TM743[电气工程—电力系统及自动化]