Representation and control of high speed phase shifter for an electric power system

Author

Ishigame, A. ; Zhao, J. ; Taniguchi, T.

Author_Institution

Dept. of Electr. & Electron. Syst., Osaka Prefecture Univ., Japan

Volume

145

Issue

3

fYear

1998

fDate

5/1/1998 12:00:00 AM

Firstpage

308

Lastpage

314

Abstract

The paper presents an analysis and control method for a high speed phase shifter (HSPS) involved in an interconnected power system. An HSPS is visualised as an ideal HSPS connected in series with its reactance. To include the dynamic characteristics of the HSPS into the power system, the terminal power characteristics of the HSPS are represented as node power injections. Resulting from the representation, the effects of HSPSs are obtained as additional bus power injections at generator internal buses. This shows that power modulation in interties by HSPSs can cause generator output modulation and is an effective method of power system stabilising control. Also, sensitivity is derived to directly assess the effectiveness of power modulation on generator outputs due to HSPSs. Based on the sensitivity coefficients, a stabilising control strategy expressed in terms of generator rotor speed deviations has been proposed

Keywords

phase shifters; power system control; power system interconnection; power system stability; additional bus power injections; dynamic characteristics; electric power system; generator internal buses; generator output modulation; generator rotor speed deviations; high speed phase shifter control; interconnected power system; intertie power modulation; node power injections; power system stabilising control; reactance; sensitivity coefficients; stabilising control strategy; terminal power characteristics;

fLanguage

English

Journal_Title

Generation, Transmission and Distribution, IEE Proceedings-

Publisher

iet

ISSN

1350-2360

Type

jour

DOI

10.1049/ip-gtd:19981886

Filename

685313