柔性直流阻尼换流阀充电过程子模块均压特性  

Voltage-Balance Characteristics for Submodule of VSC-HVDC Damping Converter Valve During System Charging Process

作　　者：韩坤 司志磊[1,2] 胡四全 夏克鹏 张磊[1,2] HAN Kun;SI Zhilei;HU Siquan;XIA Kepeng;ZHANG Lei(XJ Electric Co., Ltd., Xuchang, Henan 461000, China;XJ Group Corporation, Xuchang, Henan 461000, China)

机构地区：[1]许继电气股份有限公司,河南许昌461000 [2]许继集团有限公司,河南许昌461000

出　　处：《南方电网技术》2019年第6期8-15,29,共9页Southern Power System Technology

基　　金：国家电网有限公司科技项目“柔直换流阀可靠性提升关键技术研究”(52110418001W)~~

摘　　要：针对柔性直流阻尼换流阀系统,研究了充电过程中子模块的均压特性。并以舟山柔直桥臂阻尼恢复装置加装工程为研究背景,基于桥臂阻尼换流阀的设计原理,构建了能反映子模块取能电源及板卡功耗的子模块数学模型。通过理论分析阻尼换流阀充电过程子模块的不均压机理及影响因素,提出了相应的解决措施。仿真与试验结果验证了理论分析的正确性以及解决措施的有效性,为舟山柔性直流阻尼恢复系统加装工程的顺利实施提供了技术支撑。For the VSC-HVDC damper converter valve system, the voltage-balance characteristics of the charging are studied. The installation project of Zhoushan VSC-HVDC bridge arm damping recovery devices is taken as the background. Based on the design principle of the bridge arm damping converter valve, a sub-module mathematical model is constructed which can reflect the sub-module power supply and board power consumption. Through the theoretical analysis of the voltage-unbalance mechanism and the influencing factors of the sub-modules in the charging process of the damped converter valve, the corresponding solutions are put forward. The correctness of the theoretical analysis and the effectiveness of the solution are verified by simulation and test results, which provide technical support for the smooth implementation of the installation project of Zhoushan VSC-HVDC bridge arm damping recovery devices.

关 键 词：模块化多电平换流器 阻尼换流阀 充电 均压 等效负载 

分 类 号：TM721[电气工程—电力系统及自动化]