A placement method of fuzzy based unified power flow controller to enhance voltage stability margin

Author

Ahmad, Sahar ; Albatsh, Fadi M. ; Mekhilef, Saad ; Mokhlis, H.

Author_Institution

Dept. of Electr. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia

fYear

2014

fDate

26-28 Aug. 2014

Firstpage

1

Lastpage

10

Abstract

This paper presents a placement method of fuzzy logic based unified power flow controller (UPFC) in power system network by analyzing dynamic voltage stability. Voltage stability indices namely LQP and voltage collapse point indicators (VCPI) indices are used to determine the weakest line for UPFC by dynamic load variation. The controllers of the shunt and series converters of the UPFC are developed using fuzzy logic (FL) and proportional integral (PI) controllers respectively to enhance the dynamic voltage stability of the power system network.The simulation has been conducted in power system computer-aided design (PSCAD) environment where IEEE-5 and IEEE-14 bus system have been chosen as test bench systems. The results obtained through simulations have ensured the effectiveness of the proposed placement method since fuzzy based UPFC´s placement in the obtained locations resulted in significant improvment in voltage stability.

Keywords

IEEE standards; PI control; fuzzy control; load flow control; power system CAD; voltage control; IEEE-14 bus system; IEEE-5 bus system; LQP; PI controllers; PSCAD; VCPI indices; dynamic load variation; dynamic voltage stability; fuzzy based unified power flow controller; fuzzy logic based UPFC; placement method; power system computer-aided design; power system network; proportional integral controllers; series converters; shunt converters; voltage collapse point indicators; voltage stability margin; Fuzzy logic; Indexes; Power system dynamics; Power system stability; Stability criteria; Voltage control; Flexible AC Transmission Systems; Fuzzy Logic; PSCAD; Unified Power Flow Controller; Voltage Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE'14-ECCE Europe), 2014 16th European Conference on

Conference_Location

Lappeenranta

Type

conf

DOI

10.1109/EPE.2014.6910863

Filename

6910863