基于PSCAD的微网建模及其故障特征分析  

Analysis on modeling and fault feature of microgrid based on PSCAD

作　　者：吴振奎[1] 赵杰[1] 宋文隽[1] 

机构地区：[1]内蒙古科技大学信息工程学院,内蒙古包头014010

出　　处：《内蒙古科技大学学报》2013年第4期374-377,共4页Journal of Inner Mongolia University of Science and Technology

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.Inverte-based distributed generation（IBDG） is the main type of microsourees in microgrid. The control method of this source, and the microgrid composed by IBDG were analyzed in detail, which is the foundation of microgrid protection. The simulation model of IBDG with dual-loop control strategy of the outer voltage and the inner current and the simulation model of microgrid are built with sins- ulation software PSCAD/EMTDC. Under the grid connected operation mode and islanding operation mode, the fauh characteristics of transmission line under different kinds of faults were analyzed. And then an intuitive understanding of the special fault characteristics was obtained, providing evidence for the protection of microgrid.

关 键 词：逆变型分布式电源 双环控制 微网 故障分析 

分 类 号：TK02[动力工程及工程热物理] TM76[电气工程—电力系统及自动化]