Development and its Application of D.C. bushings of valve hall side of converter transformer

Author

Zhang En-Yue ; Wen Zheng ; Li Wei ; Zhang Yi-Feng ; Chen Chong-Nan

Author_Institution

TBEA Shenyang Transformer Group Co. Ltd., Shenyang, China

fYear

2014

fDate

20-22 Oct. 2014

Firstpage

2196

Lastpage

2201

Abstract

One ±400kV-±800kV D.C. bushings of valve hall side of converter transformer is developed based on the using property and technical demanding of converter transformer of Ultra-high voltage direct-current (UHVDC) Power transmission project from Jinping to Sunan and Hami to Zhengzhou. The Dimension and structure and technical characteristic of the bushings is introduced in this paper. The distribution map of the bushings of for electric field of alternating current(AC) and direct-current (DC) are given in details. The result of type tests and margin tests based on the ISO standard of bushings for D.C. application are presented. The application and running of ±400kV-±800kV D.C. bushings are also introduced on the converter transformer and valve hall of UHVDC Power transmission project from Jinping to Sunan and Hami to Zhengzhou.

Keywords

HVDC power convertors; HVDC power transmission; bushings; DC bushings; Hami; ISO standard; Jinping; Sunan; UHVDC power transmission; Zhengzhou; bushing distribution map; converter transformer; ultrahigh voltage direct-current power transmission; valve hall side; Filling; Insulators; Oil insulation; Power transformer insulation; Sulfur hexafluoride; Valves; Application; Bushings of Valve Hall Side of Converter Transformer; Test research; Working principles;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology (POWERCON), 2014 International Conference on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/POWERCON.2014.6993703

Filename

6993703