Switching transient studies of 345kV combined transmission systems

Author

Jung, Chae-kyun ; Lim, Kwang-sik ; Lee, Jong-beom ; Kang, Ji-won

Author_Institution

Korea Electr. Power Res. Inst., Daejeon, South Korea

fYear

2009

fDate

26-30 Oct. 2009

Firstpage

1

Lastpage

5

Abstract

This paper describes switching overvoltage of 345[kV] combined transmission system. Generally, switching overvoltage may cause the breakdown of insulation or joints of the underground power cable section. Therefore, in this paper, the various switching overvoltages are analysed according to the change of fault resistance, the amplitude of trapped charge and underground cable rate on 345[kV] combined transmission systems. The effects of pre-insertion resistance and surge arrester are also considered. The overvoltage calculations are only performed by statistical approach of EMTP/ATP.

Keywords

arresters; overvoltage protection; power transmission protection; underground transmission systems; combined transmission systems; pre-insertion resistance; surge arrester; switching overvoltage; switching transient; underground power cable section; voltage 345 kV; Arresters; Circuit faults; EMTP; Power cables; Power system reliability; Power system transients; Surges; Switches; Underground power cables; Voltage control; Combined transmission systems; EMTP/ATP; Pre-insertion resistance; Switching overvoltage; Transients;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission & Distribution Conference & Exposition: Asia and Pacific, 2009

Conference_Location

Seoul

Print_ISBN

978-1-4244-5230-9

Electronic_ISBN

978-1-4244-5230-9

Type

conf

DOI

10.1109/TD-ASIA.2009.5356819

Filename

5356819