超/特高压直流套管的研发新思路——±800 kV电容式复合绝缘穿墙套管结构设计的探讨  

New Idea on the Development of EHV/UHVDC Bushing——Discussion on Structure Design of±800 kV Capacitive Composite Insulated Wall Bushing

作　　者：黎斌 王日新 于欣 王君 汤浩[3] 张长虹[4] 王卫华[5] LI Bin;WANG Rixin;YU Xin;WANG Jun;TANG Hao;ZHANG Changhong;WANG Weihuan(Liaoning Boji Electric Technology Co.,Ltd.,Liaoning Liaoyang 111200,China;Jiangsu Rugao High Voltage Electric Apparatus Co.,Ltd.,Jiangsu Rugao 226500,China;China Electric Power Research Institute,Beijing 100192,China;China Southern Power Grid,Guangzhou 510663,China;East China Electric Power Design Institute Co.,Ltd.,Shanghai 200001,China)

机构地区：[1]辽宁博际电气技术有限公司,辽宁辽阳111200 [2]江苏省如高高压电器有限公司,江苏如皋226500 [3]国家电网中国电力科学研究院,北京100192 [4]中国南方电网超高压输电公司,广州510663 [5]华东电力设计院有限公司,上海200001

出　　处：《高压电器》2021年第7期1-11,17,共12页High Voltage Apparatus

摘　　要：中国早期800 kV直流输电阀厅使用的进口穿墙套管,存在一些运行质量问题和结构设计缺陷。电气性能的可靠性与机械强度设计、制造工艺及成本控制的矛盾交织,使特高压直流穿墙套管的设计与制造成为一个世界性的难题。为破解这个难题,文中提出了开发电容式复合绝缘直流套管的设想,并简介这种套管的主要设计思路,以期其快速发展。The imported wall bushings used in the valve hall of the early 800 kV UHVDC transmission in China has some operation quality problem and structure design defect.The mutual contradiction between electrical performance reliability and mechanical strength design,manufacturing process and cost control makes the design and manufacture of ultra-high voltage DC wall bushing become a worldwide problem.For solving this problem,the idea of developing a capacitive composite insulated DC bushing is proposed in this paper.The main design ideas of this kind of bushing are briefly introduced with aim of facilitating its fast development.

关 键 词：电场分布 局部放电 电容屏 内绝缘 外绝缘 不均匀湿闪 套管强度 

分 类 号：TM216.52[一般工业技术—材料科学与工程] TM721.1[电气工程—电工理论与新技术]