直流换流阀单元模块蒸发冷却系统的仿真分析与试验  

Simulation and Experimental Study on the Evaporative Cooling System of HVDC Valve Unit

作　　者：黄伟[1] 冯维[2] 王海峰[2] 陈彪[2] 杨婧捷 Huang Wei;Feng Wei;Wang Haifeng;Chen Biao;Yang Jingjie(China Electric Power Research Institute Beijing 100192 China;Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 China)

机构地区：[1]中国电力科学研究院,北京100192 [2]中国科学院电工研究所,北京100190

出　　处：《电工技术学报》2017年第2期264-270,共7页Transactions of China Electrotechnical Society

摘　　要：对直流换流阀的发热问题和目前主流的水冷技术存在的缺陷进行研究,提出采用蒸发冷却技术用于直流换流阀单元模块的冷却。针对由5英寸晶闸管集成的直流换流阀单元模块,设计包含贴壁式蒸发器、集气管、回液管和冷凝器等组成的蒸发冷却系统。建立单元模块蒸发冷却的仿真分析模型,得到不同功率工况下晶闸管表面的温度分布情况。试验数据与仿真结果误差在8%以内,验证了计算和试验的准确性。研究表明,蒸发冷却技术的应用使得晶闸管的温度分布更加均匀,冷却余量增大,可保障直流换流阀单元模块的载流能力,这将为直流换流站采用蒸发冷却系统提供分析和设计依据。This paper summarized the heat problem and water cooling technology of HVDCconverter valve,and presented applying evaporative cooling technology to HVDC field.A model wasdesigned for the5-inch thyristors,composed of a wall-type evaporator,gas collecting pipe,liquid tubeand condenser,etc.Based on this model,the temperature fields of the thyristors in different powerconditions are calculated by FEM.The percentage error between simulation data and experimentalresult is under8%.And the results have verified the accuracy of the calculation and test.Studies haveshown that the application of evaporative cooling technology makes the temperature distribution ofthyristors more uniform,and the increasing of cooling margin can guarantee the current-carryingcapacity of HVDC converter valve unit.These results will offer theoretical and design support for usingof evaporative cooling technology in HVDC station.

关 键 词：蒸发冷却 高压直流换流阀 晶闸管 仿真 试验 

分 类 号：TM422[电气工程—电器]