Impacts of AC Generators and DSTATCOM devices on the dynamic performance of distribution systems

Author

Freitas, Walmir ; Morelato, Andre ; Xu, Wilsun ; Sato, Fujio

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alberta, Edmonton, Alta., Canada

Volume

20

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

1493

Lastpage

1501

Abstract

This paper presents a dynamic study about the influences of ac generators (induction and synchronous machines) and distribution static synchronous compensator (DSTATCOM) devices on the dynamic behavior of distribution networks. The performance of a DSTATCOM as a voltage controller or a power factor controller is analyzed. The impacts of these controllers on the stability and protection system of distribution networks with distributed generators are determined. Computer simulation results show that a DSTATCOM voltage controller can improve the stability performance of induction generators significantly. On the other hand, a DSTATCOM power factor controller may adversely affect the stability performance of synchronous generators. It has also been observed that a DSTATCOM has no influence on short-circuit currents provided by ac generators during faults.

Keywords

asynchronous generators; distributed power generation; power distribution faults; power distribution protection; power system stability; short-circuit currents; static VAr compensators; synchronous generators; voltage regulators; AC generators; DSTATCOM devices; distributed generators; distribution network protection; distribution network stability; distribution static synchronous compensator; distribution system dynamic performance; induction generator stability performance; induction machines; power distribution faults; power factor controller; short-circuit currents; synchronous machines; voltage controller; AC generators; Control systems; Distributed power generation; Induction generators; Performance analysis; Power system protection; Reactive power; Stability; Synchronous machines; Voltage control; Custom power devices; distributed generation; distribution static synchronous compensator (DSTATCOM); induction generator; synchronous generator;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.839181

Filename

1413418