摘要
微网中的微电源大多是逆变型分布式电源,其故障特征不同于传统的同步发电机,详细分析逆变型分布式电源的故障特征,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DigSilent仿真软件上建立了恒功率控制和恒电压频率控制的逆变型分布式电源,以及孤岛和并网2种运行模式下微网的仿真模型,分析线路发生不同故障时电源侧及故障线路的故障特征,提出了不同控制方式下微电源的等效模型,为微网保护提供了依据。
Most microsources in microgrid are inverter-based distributed generations （IBDG）, and their fault characteristics are different from those of traditional synchronous generators, thus detailed analysis on fault characteristics of IBDG and that of microgrid composed by IBDG are the foundation of microgrid protection. Utilizing simulation software DigSilent, the simulation model of IBDG with P-Q control and that of IBDG with V-f control as well as simulation models of microgrid under islanding operation mode and grid-connected operation mode are built to analyze fault characteristics at IBDG side and fault characteristics of faulty transmission line while different faults occur in transmission line, and equivalent models of microgrid under differnet control modes are proposed.
出处
《电网技术》
EI
CSCD
北大核心
2011年第10期147-152,共6页
Power System Technology
关键词
微网
故障特征
逆变型分布式电源
恒功率控制
恒电压频率控制
microgrid
fault characteristics
inverter-based distributed generation （IBDG）
P-Q control
U-f control
