基于并联型电压源变换器的统一电能质量控制器  

Unified Power Quality Controller Based on Parallel Voltage Source Converters

作　　者：蔡重凯 赵越 俞永军 洪金琪 王轩 王滔 葛昆明 付永生 王广柱[2] CAI Chongkai;ZHAO Yue;YU Yongjun;HONG Jinqi;WANG Xuan;WANG Tao;GE Kunming;FU Yongsheng;WANG Guangzhu(State Grid Zhejiang Electric Power Company Shaoxing Power Supply Company,Zhejiang Shaoxing 312000,China;School of Electrical Engineering,Shandong University,Jinan 250061,China;NARI Group Corporation(State Grid Electric Power Research Institute),Nanjing 211106,China;China EPRI Science&Technology Co.,Ltd.,Beijing 102002,China.)

机构地区：[1]国网浙江省电力公司绍兴供电公司,浙江绍兴312000 [2]山东大学电气工程学院,济南250061 [3]南瑞集团(国网电力科学研究院)有限公司,南京211106 [4]中电普瑞科技有限公司,北京102002

出　　处：《电力电容器与无功补偿》2022年第5期94-101,共8页Power Capacitor & Reactive Power Compensation

基　　金：国网浙江电力公司项目(5211SX800AY)。

摘　　要：传统统一电能质量控制器(UPQC)难以有效解决大幅度电压跌落问题,并且串并联侧存在耦合,控制相对复杂。为此,本文提出一种基于并联型电压源变换器的UPQC方案,能够克服传统UPQC的不足。新型UPQC拓扑由两个独立并联电压源型变换器组成,分别实现有源电力滤波器(APF)和动态电压恢复器(DVR)功能。提出了APF单元与DVR单元投切策略,针对DVR单元的控制,提出了基于DVR直流侧电压的分段式控制策略,给出了DVR直流侧电容器容量计算方法。研制了50 kVA样机,并通过第三方专业机构实验检测,检测结果验证了新型UPQC方案的可行性和有效性。It is difficult for the traditional unified power quality controller(UPQC)to effectively solve the deep voltage sag problem and the control is relatively complicated due to existence of coupling between the series and parallel sides.Therefore,a kind of UPQC scheme based on parallel voltage source converter is proposed in this paper,which can overcome the shortcomings of traditional UPQC.The new UPQC topology consists of two independent parallel voltage source converters,which realize active power filter(APF)and dynamic voltage regulator(DVR)functions respectively.The switching strategy of APF unit and DVR unit is proposed.For the control of DVR unit,a segment-type control strategy based on DVR DC side voltage is proposed,and the calculation method of capacitor capacityof DVR DC side is given.A 50 k VA prototype is developed and tested by a third-party professional test institution.Both feasibility and effectiveness of the new UPQC scheme are verified by the test.

关 键 词：统一电能质量控制器 电压跌落 有源电力滤波器 动态电压恢复器 

分 类 号：TM711[电气工程—电力系统及自动化] TM46