摘要
特高压直流工程金具表面最大电场强度是衡量其发生电晕放电的主要因素。±1100k V直流工程户内直流场中不同设备均压装置的外形相差较大,而且相对户外直流场,屋顶和围墙都是地电位,会进一步增强金具的表面电场,因此需开展户内直流场全域三维电场仿真,根据仿真结果反复优化户内直流场设备均压电极的形状。首先通过理论计算和试验研究,确定不同直径均压屏蔽装置的表面场强许用值;然后对±1100k V特高压直流输电工程户内直流场中的关键设备开展三维电场仿真计算研究,并通过不断优化均压电极的形状,使其满足场强控制要求。
For UHVDC project, corona discharge may start if the maximum electric field of electrode surface reaches corona electric field. The shape and structure of different equipment are having large difference for ±1100kV UHVDC project DC yard, and the zero potential wall and roof are presented and increase the surface electrical field, thus the all domain 3D electric field simulation of indoor DC yard is necessary for repeated optimization of electrode shape. In this paper, the electric field simulation study and test were carried out to state the permitted electrical filed of electrode with different diameter. By 3D simulation and continuously optimizing the electrode shape of the critical equipment in 1100kV indoor DC yard, the maximum electric field of electrode surface meets the permitted value requirement finally.
作者
张福轩
陈东
余军
郭贤珊
乐波
付颖
王加龙
ZHANG Fuxuan CHEN Dong YU Jun GUO Xianshan YUE Bo FU Ying WANG Jialong(State Grid Corporation of China, Xicheng District, Beijing 100031, China State Power Economic Research Institute, Changping District, Beijing 102209, China School of Electrical Engineering, Xi＇an Jiaotong University, Xi＇an 710049, Shaanxi Province, Chin)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2017年第20期5873-5880,共8页
Proceedings of the CSEE
基金
国家重点研发计划项目(2016YFB0900805)~~
