500 kV直流电阻标准分压器迭代正交实验设计  

Iterative-orthogonal test design of 500 kV standard voltage divider with DC resistance

作　　者：高帅 赵林 徐占河[1,2] 袁瑞铭 周丽霞[1,2] GAO Shuai;ZHAO Lin;XU Zhan-he;YUAN Rui-ming;ZHOU Li-xia(Electric Power Research Institute,State Grid Jibei Electric Power Co.Ltd.,Beijing 100045,China;Electrical Measurement Technology Institute,North China Electric Power Research Institute,Beijing 100045,China)

机构地区：[1]国网冀北电力有限公司电力科学研究院,北京100045 [2]华北电力科学研究院有限责任公司电气测量技术研究所,北京100045

出　　处：《沈阳工业大学学报》2020年第1期23-28,共6页Journal of Shenyang University of Technology

基　　金：国网冀北电力有限公司科技项目(52018K17000A)

摘　　要：针对安装均压环可以提高分压器的测量精度,但其尺寸和安装位置的不同会直接影响电场畸变效果的问题,搭建了500 kV直流电阻标准分压器有限元模型,并基于迭代正交实验法分析不同尺寸和安装位置的均压环对直流电阻标准分压器周围电场分布的影响.计算出均压环圆心到地面的距离、内环半径、圆心到对称轴的距离等最优尺寸与最佳安装位置.结果表明,迭代算法使分压器周围的最大电场强度从4212.5 V/mm降低到820.719 V/mm.Aiming at the problem of electric field distortion directly affected by the different sizes and installation positions of grading ring even that its installation can improve the measurement accuracy of voltage divider,a finite element model for 500 kV standard voltage divider with DC resistance was established.According to an iterative-orthogonal test method,the influence of grading ring with different sizes and installation positions on electric field distribution around standard voltage divider with DC resistance was analyzed.The optimal size and installation position,e.g.the distance from center of grading ring to ground,the radius of inner ring and the distance from circle center to symmetry axis,etc.,were calculated.The results show that the maximum electric field strength around voltage divider obtained by the iterative algorithm reduces from 4212.5 V/mm to 820.719 V/mm.

关 键 词：500 kV直流电阻 直流标准分压器 有限元模型 电场分布 均压环 最优尺寸 安装位置 迭代正交实验法 

分 类 号：TM451[电气工程—电器]