Improvement of voltage unbalance and voltage sag in radial distribution systems using DG

Author

Saidian, Ali ; Heidari, Mehrdad ; Mirabbasi, Davar

Author_Institution

Shahid Chamran Univ., Ahvaz, Iran

fYear

2010

fDate

15-17 June 2010

Firstpage

835

Lastpage

839

Abstract

Most of the dispersed generation systems (DGS) have smaller installation capacity and have to be connected to the distribution network to supply electric power into the utility as well as local loads. When the DG is interconnected in parallel with the utility distribution system, some operating conflicts might arise that affect the system power quality. This paper investigate the effect of DG on the distribution network, with more focusing on power quality issues especially voltage quality issues like voltage sag and voltage unbalance. To confirm this subject, simulation results are provided to reveal the effect of DG on power quality. The purpose of the simulation is to study the effect of different sizes of synchronous DG on voltage regulation, voltage sag and voltage unbalance in two cases: without local load and with RL local load. The simulation is performed using MATLAB/SIMULINK.

Keywords

distribution networks; power supply quality; voltage control; dispersed generation systems; distribution network; electric power supply; power quality; radial distribution systems; voltage quality; voltage regulation; voltage sag; voltage unbalance; Cogeneration; Distributed power generation; Power generation; Power quality; Power supplies; Power system interconnection; Power system simulation; Voltage control; Voltage fluctuations; Wind energy generation; Distributed Generation (DG); voltage sag; voltage unbalance;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics and Applications (ICIEA), 2010 the 5th IEEE Conference on

Conference_Location

Taichung

Print_ISBN

978-1-4244-5045-9

Electronic_ISBN

978-1-4244-5046-6

Type

conf

DOI

10.1109/ICIEA.2010.5515277

Filename

5515277