Research on the operating process of DC De-icer and its De-icing efficiency in China Southern Power Grid

Author

Yanzhou Chen ; Qi Wang ; Baoquan Gu ; Yanlei Cai ; Fushuan Wen

Author_Institution

Maintenance & Test Center, CSG EHV Power Transm. Co., Guangzhou, China

fYear

2012

fDate

12-14 Dec. 2012

Firstpage

583

Lastpage

588

Abstract

The China Southern Power Grid (CSG) has installed 6 sets of DC-deicer on its backbone transmission grid since the ice disaster in 2008, among which the DC-deicer in Gaopo substation of Gao-Zhao ±500kV DC transmission lines is the first OPGW deicer in CSG. Most of the existing DC-deicing research work concerns on the analyzing of transmission lines without considering the installation of de-icing switches. However, the icing problem of overhead ground lines has become the secondary influencing factor in the causation of power system fault during winter. Given this background, the general situation of the 6 sets of DC de-icer is presented and the de-icing operating process and its efficiency after the installation of de-icing switches are studied. Finally, suggestions are given on basis of the research.

Keywords

de-icing; disasters; power grids; power overhead lines; power transmission faults; substation protection; switches; CSG; China Southern power grid; DC deicing efficiency; DC transmission line; Gaopo substation; OPGW deicer; backbone transmission grid; deicing switch; ice disaster; icing problem; overhead ground line; power system fault; winter; DC de-icer; OPGW; de-icing operating process; ice-accumulation detecting andpre-alarming system;

fLanguage

English

Publisher

ieee

Conference_Titel

IPEC, 2012 Conference on Power & Energy

Conference_Location

Ho Chi Minh City

Type

conf

DOI

10.1109/ASSCC.2012.6523333

Filename

6523333