An expert system for voltage and reactive power control of a power system

Author

Cheng, S.J. ; Malik, O.P. ; Hope, G.S.

Author_Institution

Dept. of Electr. Eng., Calgary Univ., Alta., Canada

Volume

3

Issue

4

fYear

1988

fDate

11/1/1988 12:00:00 AM

Firstpage

1449

Lastpage

1455

Abstract

A methodology called the sensitivity tree, which can be easily used to form an expert system for real-time control, is proposed. Based on this methodology, an expert system for the control of voltage and reactive power of a power system is developed. The main objective of this expert system is to help the operator detect buses experiencing abnormal conditions, select the most effective control measures, and calculate the control actions required to overcome the voltage violation. The control measures used to alleviate the voltage problem are capacitor compensation, transformer tap changes, and generator terminal voltage changes. By keeping the bus voltage in the entire system within limits, system security is increased. The expert system is written in the PROLOG language. Simulation studies with this expert system applied to a 30-bus power system show satisfactory results

Keywords

expert systems; power capacitors; power control; power system computer control; reactive power; voltage control; 30-bus power system; PROLOG language; buses; capacitor compensation; expert system; generator terminal voltage changes; power system; reactive power control; real-time control; sensitivity tree; simulation studies; transformer tap changes; voltage control; Control systems; Expert systems; Power system control; Power system measurements; Power system security; Power system simulation; Power systems; Reactive power control; Real time systems; Voltage control;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.192952

Filename

192952