Research on "Soft Start-up" of VSC-HVDC in Power System Restoration after Blackouts

Author

Li, Guangkai ; Zhao, Chengyong ; Zhang, Xingran ; Li, Gengyin

Author_Institution

North China Electr.Power Univ., Baoding

fYear

2007

fDate

23-25 May 2007

Firstpage

1939

Lastpage

1943

Abstract

It is very common to switch on a long no-load line in power systems. If nothing has been done, switching surge will appear instantaneously. In this paper, Voltage Source Converter (VSC) based HVDC (VSC-HVDC) technology is used in power system restoration to solve the problem of switching surge when switching on a long no-load line. Control strategies of VSC-HVDC are developed based on PI controllers. Simulation to start up a long no-load line has been conducted in three conditions respectively on software PSCAD/EMTDC. The simulation includes starting up a long no-load line without VSC-HVDC, starting up a long no-load line with VSC-HVDC when DC voltage reaches the rated value and "soft start-up" the long no-load line with VSC-HVDC. Simulation results show that "soft start-up" with VSC-HVDC can effectively reduce the switching surge when switching a long no-load line.

Keywords

HVDC power convertors; PI control; power system CAD; power system restoration; switching convertors; PI controllers; PSCAD-EMTDC; VSC-HVDC; power system restoration; soft start-up; switching surge; voltage source converter; EMTDC; HVDC transmission; PSCAD; Power conversion; Power system restoration; Power system simulation; Surges; Switches; Switching converters; Voltage; PWM; VSC-HVDC; long no-load line; overvoltage; soft start-up; switching surge;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications, 2007. ICIEA 2007. 2nd IEEE Conference on

Conference_Location

Harbin

Print_ISBN

978-1-4244-0737-8

Electronic_ISBN

978-1-4244-0737-8

Type

conf

DOI

10.1109/ICIEA.2007.4318748

Filename

4318748