Analysis and Discussion on Ground Wire Icing Disaster for a Certain UHV DC Line

doi:10.3969/j.issn.1008-0198.2024.01.019

Abstract

Abstract: In view of the shortage of icing observation data at the location of transmission line ice disaster, taking the typical fault of ground wire icing and disconnection of a ±800 kV UHV DC line as an example, this paper attempts to comprehensively analyze the meteorological elements, on-site survey, image data and on-site icing investigation, and select the appropriate calculation method to estimate the icing magnitude in combination with the icing shape, so as to provide a simple calculation method for the rapid determination of icing magnitude in the area with insufficient icing data. The feasibility of this estimation method is verified by the inverse calculation of icing magnitude by using the sag gap between conductor and ground wire under different icing conditions.

Key words: UHV, transmission line, ground wire, icing disaster

CLC Number:

TM721.1

CHAO Rui, ZHANG Wei, LI Yangyang, CUI Hanjun. Analysis and Discussion on Ground Wire Icing Disaster for a Certain UHV DC Line[J]. Hunan Electric Power, 2024, 44(1): 136-139.

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