±1100 kV特高压直流换流站平抗分置特性仿真研究  

Simulation Research of the Characteristics of Separate Arrangement of Split Smoothing Reactor for ±1 100 k V UHVDC Converter Station

作　　者：刘士利[1] 张力丹[1] 胡劲松[2] 胡楚芸 拾杨 龚树东 刘明岳 

机构地区：[1]东北电力大学电气工程学院,吉林132012 [2]国网北京经济技术研究院,北京102209 [3]沈阳电力勘测设计院,沈阳110003

出　　处：《高压电器》2018年第2期33-38,45,共7页High Voltage Apparatus

基　　金：东北电力大学博士科研启动基金项目(BSJXM201301)~~

摘　　要：特高压直流输电换流站的绝缘配合对特高压直流输电系统的安全、经济运行有着重要的意义。针对±1 100 k V换流站避雷器配置方案,基于PSCAD仿真软件建立了±1 100 k V特高压直流输电系统仿真模型,并结合系统控制参数,仿真研究了平波电抗器不同布置方案对换流阀系统各关键位置最高运行电压的影响,分析了直流线路发生接地故障时最高端换流变阀侧绕组电压的变化,结果表明,采用平抗分置布置方式可使关键位置的最高运行电压降低33 k V左右(3%),使阀侧绕组电压振荡幅值减小约60 k V左右,仿真数据对于±1 100 k V换流站的过电压保护具有一定的参考意义。The insulation coordination of the UHVDC converter station plays an important role in the security andeconomic of UHVDC system. In this paper,we build the simulation model of the ±1 100 k V UHVDC converter sta-tion based on PSCAD for the arrester configuration scheme of ±1 100 k V converter station. And using the system con-trol parameter for reference,we simulate and analyze the effect of the different layout scheme of the smoothing reac-tor on the highest operating voltage in each key point of the converter valve system and analyze the voltage variationat valve-side on the highest converter transformer when happening grounding fault on the DC line. The results showthat the highest operating voltage of the key position can be reduced by about 33 k V（3%）and the voltage variation ofvalve-side winding can be ruduced by about 60 k V by separating arrangement of split smoothing reactor,the simula-tion data is of reference significance to the overvoltage protection of ±1 100 k V converter station.

关 键 词：换流站 避雷器 平抗分置 运行电压 

分 类 号：TM721.1[电气工程—电力系统及自动化]