Icing Flashover Analysis and Insulation Configuration Suggestion of UHVAC Transmission Lines

doi:10.3969/j.issn.1000－7229.2015.04.013

Abstract

Abstract:

Icing flashover is an important cause of icing transmission lines’ trip fault. In China, the relatively high elevation areas, especially in the mountain areas with developed river basin and complex terrain, has a relatively high rate of icing flashover accident. According to the icing flashover of transmission lines in existing UHVAC demonstration project and the relevant test data of scientific research units, this paper summarized the characteristics of icing flashover and the technical points of anti-icing flashover in UHVAC demonstration projects. According to the icing flashover test, the configuration principle of icing insulation was proposed, which could provide reference data for icing insulation configuration, strengthen the tower design in UHVAC transmission lines, and improve the reliability of safe operation of UHV power grid.

Key words: UHV, AC transmission lines, icing flashover, insulation configuration

CLC Number:

TM 75

ZHOU Wei, LI Xianxin, LI Chengyu. Icing Flashover Analysis and Insulation Configuration Suggestion of UHVAC Transmission Lines[J]. ELECTRIC POWER CONSTRUCTION, 2015, 36(4): 77-82.

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