A Method Integrating Deterministic and Stochastic Approaches for the Simulation of Voltage Unbalance in Electric Power Distribution Systems

Author

Wang, Y. J. ; Pierrat, L.

Author_Institution

National Yunlin University of Science & Technology, Yunlin, Taiwan; University of Grenoble, Grenoble, France

Volume

21

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

62

Lastpage

62

Abstract

This paper deals with modeling, analysis, and Monte Carlo simulation of three-phase voltage unbalance based on data measured from a 69/11-kV distribution substation. Random variation of the voltage unbalance factor is modeled with the aid of correlated Gaussian random variables that represent random variations in three-phase active and reactive powers. A network reduction technique using multiple-port Thevenin equivalent circuits, which allows the Monte Carlo simulation to be carried out faster, is also presented. Comparison of simulated and recorded probability distributions of voltage unbalance factors is given and good agreement has been obtained.

Keywords

Circuit simulation; Equivalent circuits; Integrated circuit measurements; Power system modeling; Probability distribution; Random variables; Reactive power; Stochastic systems; Substations; Voltage; Monte Carlo simulation; Voltage unbalance; measurement; network reduction; random processes;

fLanguage

English

Journal_Title

Power Engineering Review, IEEE

Publisher

ieee

ISSN

0272-1724

Type

jour

DOI

10.1109/MPER.2001.4311381

Filename

4311381