滇西北至广东特高压直流送端换流站融冰方案技术经济分析

Selection Analysis of Northwest Yunnan to Guangdong EHV DC Converter Station's Ice Melting Scheme

摘要: 覆冰闪络是造成重覆冰区输电线路跳闸故障的重要原因。在我国云南、贵州等海拔比较高的山区，尤其是在水系流域发达、地形复杂的地区，安装融冰装置能降低冰闪事故率，提高输电网冬季运行的安全性。通过对滇西北至广东特高压直流输电工程的换流站融冰方案进行选型分析，从技术方案，建设管理、运行维护、工程投资等方面展开比较，提出了技术经济性上具有明显优势的直流融冰配置方案，并为后续工程提供参考。

Abstract: Icing flashover is an important cause of icing transmission lines' trip fault. In China's Yunnan, Guizhou and other relatively high elevation of the mountain, especially the developed, in river basin areas of complex topography, the installation of the ice melting device can reduce the icing flashover accident rate and improve the safety of winter operation of transmission network. In this paper, through the analysis of the sending station selection of ice melting scheme in the Northwest Yunnan Province to Guangdong EHV DC transmission project, from the technical scheme, the thesis compares the construction management, operation and maintenance, project investment etc, put forward the technical economy has obvious advantages on DC ice melting scheme, and provide reference for the follow-up project.