500 kV变电站高压场线夹电晕放电原因分析及处置方案研究  

Analysis of the Causes of Corona Discharge in the Clamp of 500 kV Substation and Study on the Treatment Scheme

作　　者：付威 FU Wei(Shenzhen Power Supply Bureau Co.,Ltd.,Shenzhen 518000,China)

机构地区：[1]深圳供电局有限公司,广东深圳518000

出　　处：《电工技术》2023年第17期204-206,213,共4页Electric Engineering

摘　　要：500 kV变电站出线间隔扩建并网过程中出现HGIS套管顶端双分裂T接转角线夹电晕放电现象。针对站内高压场地平面布置图和断面图建立变电站单间隔电场仿真模型,依据T接转角线夹图纸和实测数据,建立理想线夹模型和实际线夹模型并分别进行表面电场计算,分析产生电晕放电现象的原因,并通过在HGIS套管上端原有均压环基础上增加顶部屏蔽环的方案进行电场优化。During the expansion grid connection of a certain 500 kV substation outgoing line bay,corona discharge occurred on the double split T-shaped corner clamp at the top of HGIS bushing.According to the drawings and measured data of T-shaped corner clamp,the ideal clamp model and actual clamp model are established so as to calculate surface electric field respectively and analyze the causes of corona discharge.The electric field is optimized by adding the top shielding ring on the basis of the original grading ring at the upper end of the HGIS casing.

关 键 词：线夹 电晕放电 建模 屏蔽环 

分 类 号：TM63[电气工程—电力系统及自动化]