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17.基于PSCAD的微网建模及其故障特征分析

日期：2013-12-25 14:30:00 点击：

吴振奎，赵杰，宋文隽

（内蒙古科技大学信息工程学院，内蒙古包头014010）

关键词：逆变型分布式电源；双环控制；微网；故障分析

中图分类号：TK02；TM76 文献标识码：A

摘要：逆变型分布式电源是微网中微电源的主要类型，详细分析此种电源逆变器的控制方式，以及由此类电源组成的微网的故障特征是微网保护的基础。在PSCAD/EMTDC仿真软件上建立电压外环和电流内环的双闭环控制的逆变型分布式电源模型，以及由此类电源构成的微网仿真模型，并在孤岛和并网两种运行模式下，仿真分析微网内部发生不同故障类型时线路的故障特征，从而对微网的特殊故障特征有较为深刻的理解，为微网保护提供依据。

Modeling and Fault Analyzing of Microgrid Based on PSCAD

WU Zhen-kui,ZHAO Jie,SONG Wen-juan

(School of Information Engineering,Inner Mongolia University of Science and Technology,Baotou 014010,Inner Mongolia,China)

Keywords:inverter-based distributed generation, dual-loop control, microgrid, fault analyzing

Abstract: Inverter-based distributed generation（IBDG）is the main type of microsources in microgrid. Detailed analysis on control method of this source ,and that of microgrid composed by IBDG are the foundation of microgrid protection. The simulation model of IBDG with dual-loop control strategy of outer voltage and inner current as well as simulation models of microgrid under grid connected operation mode and islanding operation mode are built with simulation software PSCAD/EMTDC, which to analyze fault characteristics of transmission line under different faults. And then have an intuitive understanding of special fault characteristics,to make an account for protection of Microgrid.