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±500kV换流站直流场主设备典型外绝缘故障分析及对策 被引量:11

Analysis and Countermeasure on Typical External Insulation Failure of Main Equipments of ±500 kV Converter Stations
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摘要 ±500kV点对点输电线路已成为我国“大区联网”的重要方式。统计归纳了我国在运的±500kV点对点输电线路的基本情况,对比了各直流系统换流站主设备的外绝缘配置,提出引起直流场主设备主要外绝缘故障的原因,即外绝缘配置不足、复合外绝缘表面憎水性下降或丧失和主设备的设计缺陷,并分别给出了针对性的对策。将换流站直流场主设备的放电类型进行了分类,指出发生过Ⅱ和Ⅲ类放电的设备,应在设备停运后喷涂室温硫化硅橡胶涂料或加装增爬裙。 ±500 kV transmission lines have become an important way to connect the large area power grids in China. The basic information of ±500 kV point-to-point transmission lines in China was summarized; external insulation configurations for main equipments of DC fields in converter stations were compared; primary causes leading to external insulation failures occurred in main equipments of DC fields, namely insufficient configuration of external insulation, weakening or losing surface hydrophobicity of composite external insulation and design defect of main equipments, were pointed out; and pertinentcountermeasures were given respectively. The types of discharge occurred on main equipments of DC fields in converter stations were classified and it was pointed out that for main equipments, on which the discharge in the second or the third level occurred, the RTV should be sprayed onto them or the booster shed should be added to them after the equipments were out of service.
作者 魏杰 高海峰 黄瑞平 宿志一 陕华平 WEI Jie, GAO Haifeng, HUANG Ruiping, SU Zhiyi, SHAAN Huaping (1. China Electric Power Research Institute, Haidian District, Beijing 100192, China; 2. State Grid Operation Company, Dongcheng District, Beijing 100004, China)
出处 《电网技术》 EI CSCD 北大核心 2012年第12期276-282,共7页 Power System Technology
关键词 直流系统 换流站 主设备 外绝缘 故障 DC power transmission system converter station main equipment external insulation failure
作者简介 魏杰(1983),男,硕士,工程师,从事高电压试验技术与输变电设备外绝缘的研究工作,E-mail:weijie@epri.Sgcc.com.cn 高海峰(1979),男,博士,高级工程师,从事高电压试验技术与输变电设备外绝缘的研究工作,E-mail:gaohf@epri.Sgcc.com.cn; 黄瑞平(1984),男,工程师,从事高电压试验技术与输变电设备外绝缘的研究工作,E-mail:huangrp@epfi.Sgcc.com.cn; 宿志一(1946),男,教授级高级工程师,从事高电压试验技术与输变电设备外绝缘的研究工作,E-mail:shuzy@epri.Sgcc.com.cn; 陕华平(1977),女,工程师,从事直流输电检修管理工作,E-mail:hp-shan@sgcc.com.cn。
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