±660kV直流换流站阀厅内金具表面电场数值求解  

Numerical Solution of Electric Power Fittings about Surface Electric Field in ±660 kV DC Converter Station Valve Hall

作　　者：王栋[1] 阮江军[1] 杜志叶[1] 曾静[2] 杜卫[1] 荣荣[1] 

机构地区：[1]武汉大学电气工程学院,武汉430072 [2]中南电力设计院,武汉430071

出　　处：《高电压技术》2011年第10期2594-2600,共7页High Voltage Engineering

基　　金：国家电网公司科技项目(BA201011S208);国家自然科学基金(50977066);中央高校基本科研业务费专项资金(20102071010000078)~~

摘　　要：针对我国特有的±660kV的电压等级下的阀厅全模型的金具电场计算,采用静电场瞬时加载法,首先根据±660kV换流站阀厅换流变压器设备参数,通过MATLAB仿真得到阀厅内部主要设备在额定功率以及轻载功率下的电位波形,选取比较典型的16组数据进行数值求解,从而得到相应情况下阀厅内部场强最大值以及场强变化曲线。计算结果表明,在当前设计方案及电位加载方式下,阀厅内部金具表面最大场强符合直流阀厅内部电场控制要求。该数据为阀厅的设计规划提供了可靠支撑,具有重要指导意义。Valve hall is one of the most important components in EHV and UHV direct current transmission lines. Numerical simulation about valve hall is helpful to achieving reasonable arrangement of devices, determining the shape and size of fittings, and controlling electrical field intensity. In accordance with the valve hall of ± 660 kV DC transmission which is China＇s unique characteristics, we adopted the electrostatic field instantaneous load method in simulation. According to device parameters of converter transformer, we obtained the potential waveforms of the major equipment in valve hall by MATLAB simulation under light load power and rated power. Then we selected 16 groups of typical data from the waveforms to simulate, and obtained the maximum field intensity and field curves under corresponding case. The results show that maximum field intensity of the surface of power fitting meets the re quirements of the electric field control in valve hall under the current design and potential of loading, providing a reliable support for the design of valve hall.

关 键 词：±660 KV 电力金具 阀厅 高压直流输电 最大场强 典型相序 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM151