基于虚拟同步发电机的微电网控制方法研究  

Research on Control Methods of Microgrid Based on the Virtual Synchronous Generators

作　　者：朱丹[1] 苏建徽[1] 吴蓓蓓[1] 

机构地区：[1]合肥工业大学教育部光伏系统工程研究中心,安徽合肥230009

出　　处：《电气自动化》2010年第4期59-62,共4页Electrical Automation

基　　金：教育部科学技术研究重大项目(306004);国家自然基金项目(50777015)

摘　　要：首先介绍了微电网的产生背景和意义,给出微电网的概念和典型结构示意图。针对传统分布式发电技术不能满足微电网运行要求,该文基于同步发电机的模型提出了虚拟同步发电机的概念,将大电网中的一次调频、二次调频等成熟的理论知识引入到了微电网中,给出了联网运行和孤岛运行模式下微电网的控制方法,使具有同步发电机特性的逆变电源能够稳定并网。最后通过MATLAB/simulink验证了虚拟同步发电机思想及控制方法的正确性和有效性。This paper introduces the appearance background of the microgrid,the concept as well as the typical structure diagram is given.The technique of traditional distributed generation system can not meet the operating requirement of microgrid,based on the synchronous generator model,a new concept of virtual synchronous generator is presented.The mature theories in power system such as the first and the second frequency regulation will be used in microgrid.The control methods in the grid-connected mode and the islanding mode are given,all these make sure that the inverter with the characteristics of synchronous generator can safely build the microgrid.The correctness and validity of the control strategies are verified by the simulation result.

关 键 词：微电网 虚拟同步发电机 联网模式 孤岛模式 一次调频 二次调频 

分 类 号：TM727[电气工程—电力系统及自动化]