Study of overvoltages on ±800 kV UHVDC transmission system

Author

Jie, Zhao ; Gang, Wang ; Kai, Yin ; Li Haifeng

Author_Institution

Coll. of Electr. Eng., South China Univ. of Technol., Guangzhou, China

fYear

2006

fDate

28-31 March 2006

Firstpage

187

Lastpage

191

Abstract

This paper investigates the causes and characteristics of the overvoltage of ±800 kV UHVDC transmission system under operation and fault conditions, and the factors which influence the overvoltage level. A complete simulation model is built based on the design aspect of the upcoming Yun-Guang UHVDC Transmission System scheme by PSCAD/EMTDC. The overvoltages under various conditions are calculated. By comparing with ±500 kV HVDC transmission system, the particular characteristic of the overvoltage of UHVDC transmission system is summarized. Based on this, the basic rules for insulation margin and insulation level are given. The effect methods to prevent and limit overvoltage are discussed, and some beneficial results are obtained.

Keywords

HVDC power transmission; insulation; overvoltage protection; power system CAD; power system simulation; power transmission faults; power transmission protection; -500 to 500 kV; -800 to 800 kV; PSCAD-EMTDC simulation; Yun-Guang UHVDC transmission system; fault condition; insulation level; overvoltage characteristics; overvoltage prevention;

fLanguage

English

Publisher

iet

Conference_Titel

AC and DC Power Transmission, 2006. ACDC 2006. The 8th IEE International Conference on

Conference_Location

IET

ISSN

0537-9989

Print_ISBN

0-86341-613-6

Type

conf

Filename

1633639