基于混频电源运行的模块化多电平矩阵式换流器阀段试验系统  

Test System for Valve Section of Modular Multilevel Matrix Converter Based on Mixed-frequency Power Supply Operation

作　　者：杨晨 谢晔源[1] 段军[1] 王宇[1] 任铁强 张君君 YANG Chen;XIE Yeyuan;DUAN Jun;WANG Yu;REN Tieqiang;ZHANG Junjun(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,江苏省南京市211102

出　　处：《电力系统自动化》2024年第14期167-175,共9页Automation of Electric Power Systems

基　　金：国家重点研发计划资助项目(2021YFB2401100);南瑞集团有限公司资助项目(JS2201452)。

摘　　要：模块化多电平矩阵式换流器(M^(3)C)是目前柔性低频输电系统完成频率变换的主要电力电子设备。M^(3)C包含9个桥臂,应用在高压大功率场合的串联模块数目众多,对其设备子模块的生产提出了特殊试验需求。在M^(3)C桥臂稳态电压和电流分析基础上,设计了一种应用于数个串联桥臂子模块(阀段)的对拖运行试验系统,可对其进行等效功率运行测试,以辅助M^(3)C设备的生产和出厂测试。提出了对拖试验系统的控制策略,搭建了由两组4个串联子模块构成的阀段对拖试验系统,进行了相关试验验证。试验结果表明,所提出的试验系统能够满足M^(3)C桥臂串联子模块的等效功率运行试验,并且对电源功率消耗要求不高。Modular multilevel matrix converter(M~3C)is currently the main power electronic equipment for frequency conversion in flexible low-frequency transmission systems.M~3C contains 9 bridge-legs and is widely used in high-voltage and high-power situations with a large number of series modules,which poses the special testing requirements for the production of its equipment submodules.On the basis of analyzing the steady-state voltage and current of M~3C bridge-legs,a pull-push operation test system is designed for several series bridge-leg submodules(valve sections),which can perform equivalent power operation tests to assist in the production and factory testing of M~3C equipment.A control strategy for the pull-push test system is proposed,and a valve section push-push test system consisting of two sets of four series submodules is constructed and verified through relevant experiments.The experimental results show that the proposed test system can meet the equivalent power operation test of M~3C bridge-leg series submodules,and does not require high power consumption from the power source.

关 键 词：高压直流输电 低频输电 模块化多电平矩阵式换流器 换流阀 混合频率 

分 类 号：TM721.1[电气工程—电力系统及自动化]