±500kV直流输电线路地线融冰方案研究  

Study on De-icing Method for Ground Wires of ±500kV HVDC Transmission Lines

作　　者：柏晓路 刘利林 张益修 岳浩 徐维毅 BAI Xiao-lu;LIU Li-lin;ZHANG Yi-xiu;YUE Hao;XU Wei-yi(Central Southern China Electric Power Design Institute Co.,Ltd.of CPECC,Wuhan 430071,China;HVDC Technology Department of CEEC Engineering Institute,Wuhan 430071,China;Energy Development Research Institute Company Limited of China Southern Power Grid,Guangzhou 510663,China)

机构地区：[1]中国电力工程顾问集团中南电力设计院有限公司,湖北武汉430071 [2]中国能建工程研究院高压直流技术研究所,湖北武汉430071 [3]南方电网能源发展研究院有限责任公司,广东广州510663

出　　处：《电力勘测设计》2020年第3期37-42,共6页Electric Power Survey & Design

摘　　要：覆冰灾害天气会对电网造成极大破坏,引发大面积停电。地线融冰技术是一项防止倒塔、铁塔受损和断线等事故发生的有效方法。文章以±500 kV云贵直流线路工程为依托,利用换流站已配置的地线融冰装置,对地线融冰电流选取、接线方案选择、绝缘配置以及附属设施等进行深入分析和研究,提出了合适的地线融冰技术方案,为后续超高压直流输电线路地线融冰的设计提供参考。Ice disaster weather may cause great damage to the power grid.It may lead to large blackout.DC based deicing technology for ground wire is an effective method to solve the accidents such as collapses and damages of tower,disconnection faults of ground wire.In Yunnan-Guizhou±500kV HVDC transmission line project,a suitable scheme of de-icing for ground wire is proposed by using the existing ground wire de-icing device.The selection of the de-icing current,the wiring scheme,the insulation configuration and the auxiliary facilities are analyzed and studied.A reference for the design of subsequent HVDC transmission line projects is provided..

关 键 词：输电线路 融冰方案 覆冰 直流融冰 

分 类 号：TM75[电气工程—电力系统及自动化]