高渗透率微网多功能电能质量控制器  

Multifunctional Power Quality Controller for Microgrid with High Penetration

作　　者：李达义[1] 秦毅 康文杰[1] 

机构地区：[1]强电磁工程与新技术国家重点实验室华中科技大学,湖北省武汉市430074 [2]深圳微网能源管理系统实验室有限公司,广东省深圳市518054

出　　处：《电力系统自动化》2015年第4期103-109,151,共8页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51477060;51277081)~~

摘　　要：由于微网中独特的双向潮流控制,频繁出现的过电压和过电流现象,以及大电网和微网之间的谐波高渗透率,使得微网的电能质量问题比传统大电网要严重得多。同时因微网容量不大,安装多种电能质量控制器不经济,为了满足高渗透率下微网电能质量的要求,文中提出一种多功能电能质量控制器。该多功能电能质量控制器可以灵活调节微网和传统电网的潮流,限制故障电流和进行软启动,抑制微网谐波高渗透率。文中分析了该电能质量控制器的原理、系统控制策略等。构建了一套三相实验系统,实验结果证明了该多功能电能质量控制器的有效性。The power quality problem of a microgrid is much more serious than that of the traditional grid because of the unique bidirectional power flow,more frequent overvoltage and overcurrent phenomenon and the high harmonic penetration of the microgrid.Also,the microgrid capacity is comparatively small and it is not cost effective to install various types of power quality controller.In order to cater for the requirements of the unique power quality of a microgrid with high penetration,a novel power quality controller with multifunction is proposed by combining a variable reactor based on controllable magnetic flux and an active power filter based on fundamental magnetic flux compensation.The power quality controller features adjusting the power flow,limiting the fault current,soft starting the motor or system and isolating the harmonic.The system principle and configuration are addressed in detail.A set of three-phase multifunctional power quality controller has been constructed.The field test results have verified the validity of the novel power quality controller.

关 键 词：电能质量控制器 微网(微电网) 可调电抗器 高渗透率 双向潮流 电流限制 

分 类 号：TM711[电气工程—电力系统及自动化]