同相牵引供电系统改进型混合电能质量调节器研究  

Study on Improved Hybrid Power Quality Regulator for Co-phase Power Supply System

作　　者：魏文婧 李蓉蓉 WEI Wenjing;LI Rongrong

机构地区：[1]广东电网有限责任公司东莞供电局 [2]国网四川省电力公司营销服务中心

出　　处：《电气化铁道》2023年第5期14-17,共4页Electric Railway

摘　　要：传统的混合电能质量调节器HPQC在背靠背变换器中采用LC耦合支路和L耦合支路来降低变换器的补偿容量和直流电压,但HPQC只能在特定的负载条件下达到最小补偿容量。为了在所有负载条件下保持变换器补偿容量处于较低水平,本文提出了一种改进型混合电能质量调节器,采用晶闸管开关支路代替常规的固定耦合支路,动态调整支路阻抗,能够有效降低变换器补偿容量。Traditional hybrid power quality conditioner(HPQC)uses LC coupling branch and L coupling branch in back-to-back converter to reduce the compensation capacity and DC voltage of the converter.However,HPQC can only achieve the minimum compensation capacity under specific load conditions.In order to keep the compensation capacity of the converter at a low level under all load conditions,the paper puts forward an improved hybrid power quality regulator,which uses a thyristor switch branch instead of a conventional fixed coupling branch,dynamically adjusts the branch impedance,and is able to reduce effectively the compensation capacity of the converter.

关 键 词：牵引供电系统 同相供电 改进型电能质量调节器 

分 类 号：U223.53[交通运输工程—道路与铁道工程]