复合材料杆塔杆板连接点局部放电优化措施研究  

Study on optimization of partial discharge at pole-to-plate connection points in composite material towers

作　　者：郝金鹏 刘世涛 杨凯 伍弘 何潇[3] 王羽[3] HAO Jinpeng;LIU Shitao;YANG Kai;WU Hong;HE Xiao;WANG Yu(Power Research Institute of State Grid Ningxia Electric Co.,Ltd.,Yinchuan Ningxia 750011,China;State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan Ningxia 750001,China;School of Electrical Engineering and Automation,Wuhan University,Wuhan Hubei 430072,China)

机构地区：[1]国网宁夏电力有限公司电力科学研究院,宁夏银川750011 [2]国网宁夏电力有限公司,宁夏银川750001 [3]武汉大学电气与自动化学院,湖北武汉430072

出　　处：《宁夏电力》2023年第4期46-55,共10页Ningxia Electric Power

基　　金：宁夏自然科学基金项目(2021AAC03510)。

摘　　要：为改善复合材料杆塔上的杆板连接点在污秽条件下存在的局部放电现象,通过有限元仿真分析金属板连接点和复合板连接点的电流畸变情况,提出改进连接点电流密度分布的措施。并搭建红外观测、可见光、泄漏电流和电压的多参量人工污秽试验同步观测平台以验证优化措施的改善效果。试验表明改进后的并联圆形复合板和金属套连接形式可以有效降低复合板连接点和金属板连接点的电流密度畸变程度,进而抑制连接点的局部温升和干带形成。This study aims to mitigate the partial discharge at the pole-to-plate connection points in composite material towers under contaminated conditions.Through finite element simulations,current distortions at the metal plate and composite plate connection points are analyzed.Measures to enhance the current density distribution at these connection points are proposed.An integrated observation platform is developed for synchronized multi-parameter artificial contamination testing,which includes infrared observations,visible light,leakage current,and voltage measurements,to validate the efficacy of the optimization measures.The experimental results show that using parallel circular composite plates connected to metal sleeves effectively reduces the current density distortions at both the composite and metal plate connection points.Consequently,this suppresses local temperature rise and the formation of dry bands.

关 键 词：复合材料杆塔 杆板连接点 红外温度 局部放电 优化措施 

分 类 号：TM754[电气工程—电力系统及自动化]