Effect of the current controller of a converter driven synchronous generator on the transient stability of a power system

Author

Khomari, Moloantoa ; Folly, Komla

Author_Institution

Dept. of Electr. Eng., Univ. of Cape Town, Cape Town, South Africa

fYear

2009

fDate

23-25 Sept. 2009

Firstpage

1

Lastpage

6

Abstract

This paper investigates the impact of the voltage source converter (VSC) current controller of a converter driven synchronous generator on the transient stability of a power system. The transient disturbance which the power network is exposed to is that of a three-phase short circuit. The transient response of the power system is firstly observed with system controllers´ i.e. Automatic voltage regulator (AVR) and speed governor and without system controllers while the current controller was inactive. The transient response of the power network is then analyzed under similar power system control scenarios with the VSC current controller engaged. The results highlight how the VSC current controller improves on the power systems transient stability.

Keywords

angular velocity control; electric current control; machine control; power convertors; power system control; power system transient stability; synchronous generators; transient response; voltage control; automatic voltage regulator; converter driven synchronous generator; current controller; power system control; power system transient stability; speed governor; three-phase short circuit; transient disturbance; transient response; voltage source converter; Automatic control; Automatic voltage control; Circuit stability; Control systems; Converters; Power conversion; Power system stability; Power system transients; Synchronous generators; Transient response; VSC current controller; converter driven synchronous generator; transient stability;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2009. AFRICON '09.

Conference_Location

Nairobi

Print_ISBN

978-1-4244-3918-8

Electronic_ISBN

978-1-4244-3919-5

Type

conf

DOI

10.1109/AFRCON.2009.5308109

Filename

5308109