分布式发电系统中改善电能质量的方法  

Approach to Improve Power Quality in Distributed Generation System

作　　者：吴俊宏[1] 艾芊[1] 

机构地区：[1]上海交通大学电气工程系,上海200030

出　　处：《低压电器》2009年第12期45-49,共5页Low Voltage Apparatus

基　　金：国家863高技术基金项目(2007AA05Z458)

摘　　要：在多个分布式发电装置与电网并网运行的条件下,提出了基于级联H桥型五电平变流器的分布式发电并网方式,并设计了功率电流双环控制方法的有功、无功独立调节控制系统。最后利用PSCAD/EMTDC仿真软件对其进行了仿真分析,结果表明该系统功率控制灵活,电流波形极好。With the grid-connected operation of multiple distributed and power network, the distributed generation grid-connected method based on cascade H .bridge five-level converter was put forward. The active and reactive adjusted respective system of power-current double-loop control was designed. At last, based on the software of PSCAD/EMTDC, the simulation analysis was done. The result showed that the system had flexible control and good waveform.

关 键 词：分布式发电 谐波畸变 有功无功独立控制 级联型H桥 载波相移SPWM 

分 类 号：TM61[电气工程—电力系统及自动化]