A study on the dynamic responses of a PWM based UPFC and its application to power system

Author

Won, Dong-Jun ; Moon, Seumg-II

Author_Institution

Sch. of Electr. Eng., Seoul Nat. Univ., South Korea

Volume

3

fYear

2000

fDate

2000

Firstpage

1590

Abstract

This paper presents the analysis of the dynamic responses of PWM (pulse width modulation) based UPFC (unified power flow controller) and its interaction with a power system. Detailed switching-level simulation is performed using EMTP (Electromagnetic Transient Program) and its dynamic responses are analyzed. Based on the simulation results, the appropriate equivalent impedances of UPFC voltage-source model which represents similar dynamic responses with PWM based UPFC are determined by an optimization routine. This paper also analyzes the influence of control parameters and the power system strength on the performance of UPFC. Finally this paper shows that the performance of UPFC is improved by control parameter tuning when UPFC is installed in a weak power system

Keywords

EMTP; PWM invertors; dynamic response; flexible AC transmission systems; load flow control; power system analysis computing; power system control; EMTP; Electromagnetic Transient Program; PWM based UPFC; control parameter tuning; control parameters influence; dynamic responses; equivalent impedances; inverter; optimization routine; power system; pulse width modulation; switching-level simulation; unified power flow controller; voltage-source model; weak power system; Control systems; EMTP; Performance analysis; Power system analysis computing; Power system dynamics; Power system modeling; Power system simulation; Power system transients; Pulse power systems; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Society Summer Meeting, 2000. IEEE

Conference_Location

Seattle, WA

Print_ISBN

0-7803-6420-1

Type

conf

DOI

10.1109/PESS.2000.868765

Filename

868765