考虑主从控制策略的微电源逆变器设计  

Design of Micropower Inverter Considering Master-Slave Control Strategy

作　　者：潘远[1,2] 李培强[1] 李欣然[1] 刘乾勇[1] 徐长鸿[1] 陈德生[1] 

机构地区：[1]湖南大学电气与信息工程学院,长沙410082 [2]广东省电力调度中心,广州510600

出　　处：《电力系统及其自动化学报》2013年第3期25-30,共6页Proceedings of the CSU-EPSA

基　　金：国家自然科学基金项目(51277055);湖南省自然科学基金项目(10JJ9023;10JJ2043)

摘　　要：逆变器的设计能使微电源参与微电网频率调节,并可以将微电网切换到孤岛模式。采用平均功率法设计了功率控制外环,构建了基于功率电流双环控制的PQ控制的逆变控制器为从控制器;通过调整传统的控制方程和设计适宜的控制器参数改变了传统电网的下垂特性,从而设计了基于改进型下垂特性的外环控制器为主控制器,进而提出了一种无需通信的各类型分布式电源间的主从控制策略。仿真算例结果验证了该协同控制策略的正确性和有效性。The design of inverter can enable the micropower sources to participate in the frequency regulation of microgrid, and implement the microgrid with the capability of working in island mode. Firstly, the method of average power was used to design the power control outer loop, and then a PQ control strategy of inverter system based on both power and electrical current control was proposed. Secondly, the traditional power grid droop was changed by adjusting the control equation and the design of suitable controller parameters, and an outer ring controller based on improving the sagging shape was designed. And then, a master-slave control strategy of the microgrid between various types of distributed power supply without data correspondence was put forward. Finally, the correctness and effectiveness of the coordinated control strategy was verified by a numerical analysis.

关 键 词：微电网 分布式电源 主从控制策略 孤岛模式 频率控制 

分 类 号：TM714[电气工程—电力系统及自动化]