柔性直流输电用干式直流电容器工况验证试验回路研制  

Research on the Operating Conditions Verification Platform of DC-link Capacitor for Flexible HVDC Transmission

作　　者：盖斌 贾华 张腾 徐子萌 吴云翼 易承乾 陈炎 张波[3] GAI Bin;JIA Hua;ZHANG Teng;XU Zimeng;WU Yunyi;YI Chengqian;CHEN Yan;ZHANG Bo(Xi'an High Voltage Apparatus Research Institute Co.,Ltd.,Xi’an 710077,China;CTG Science and Technology Research Institute,Beijing 101199,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]西安高压电器研究院股份有限公司,西安710077 [2]中国长江三峡集团有限公司科学技术研究院,北京101199 [3]清华大学电机工程与应用电子技术系,北京100084

出　　处：《电力电容器与无功补偿》2024年第1期169-174,共6页Power Capacitor & Reactive Power Compensation

基　　金：国家重点研发计划(2021YFB2401505)。

摘　　要：干式直流电容器作为柔性直流输电换流阀的核心组件,尚未开展阀组级工况试验验证。通过对目前实验室条件下换流阀组件运行情况的调研,确定采用被试阀段与陪试阀段对拖运行的拓扑,以满足验证试验回路构建的要求。通过仿真分析和系统试验,证明在满足经济性和实用性要求下,正常工作时回路各阀段至少需要5个子模块串联。考虑到该试验回路需要针对不同型号规格的电容器开展运行试验,叠层母排采用了特殊的设计,方便参数测量和电容器更换。As the core component of flexible HVDC transmission converter valves,DC-link capacitors have not yet been tested and verified in valve section operating conditions.Through research on the operation of the converter valve components under current laboratory conditions,it has been determined that the circuit topology of towing operation mode between the test valve section and the accompanying valve section can meet the requirements of constructing the verification test circuit.Through simulation analysis and system testing,it is proved that at least 5 sub modular need to be connected in series for each valve section of the circuit to verify the normal operation,while meeting the requirements of economy and practicality.Considering that the test circuit needs to conduct operational tests on capacitors of different models and specifications,the stacked busbar adopts a special design to facilitate parameter measurement and capacitor replacement.

关 键 词：柔性直流输电 直流电容器 工况验证试验回路 子模块 仿真 输出电压波形 阀段间电流波形 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM53