基于试验数据的6250A换流阀逆向校核分析  

Reverse Checking Analysis of 6250A UHVDC Converter Valve Based on Testing Data

作　　者：周建辉 盛财旺 杨勇 高冲 张静 段昊[4] 张娟娟 

机构地区：[1]全球能源互联网研究院有限公司,北京市昌平区102209 [2]先进输电技术国家重点实验室(全球能源互联网研究院有限公司),北京市昌平区102209 [3]国网北京经济技术研究院,北京市昌平区102200 [4]国家电网公司,北京市西城区100031

出　　处：《电网技术》2018年第1期65-71,共7页Power System Technology

基　　金：国家电网公司科技项目(5455DW160007)~~

摘　　要：±800k V/6250A特高压直流输电工程输电电流从5000A提升至6250A对换流阀关键零部件的热特性、电气特性等均提出了新的要求,给换流阀关键零部件的研制带来巨大的挑战。为保证6250A换流阀满足直流工程设计要求,提出了一种基于试验数据的6250A换流阀逆向校核方法。通过试验数据建立换流阀关键元器件电气仿真模型,保证模型的精确性;同时,开展组件研发试验,重点考核了在最严酷工况下换流阀所有性能是否具备充足的设计裕度;最后通过仿真和试验结果对比,逆向校核6250A换流阀可靠性,保证了直流工程顺利实施。Transmission current of ±800 k V/6250 A UHVDC project is increased from 5000 A to 6250 A, presenting higher requirements for thermal and electric characteristics of key components of converter valve and bringing huge challenge for development of converter valve. In order to ensure design of 6250 A UHVDC converter valve meeting requirements of UHVDC projects, a reverse checking method of 6250 A UHVDC converter valve was proposed based on testing data in this paper. A simulation model of key components in converter valve was established based on testing data to improve model accuracy. A component test was carried out to evaluate whether performance of converter valve possessed enough design margin. Comparative analysis of simulation and test results checked reliability of converter valve to ensure smooth implementation of the UHVDC project.

关 键 词：6250A换流阀 热特性 电气特性 组件试验 

分 类 号：TM721[电气工程—电力系统及自动化]