Voltage support by distributed static VAr systems (SVS)

Author

Kincic, Slaven ; Wan, Xiaotong Grace T ; McGillis, Donald T. ; Chandra, Ambrish ; Ooi, Boon-Teck ; Galiana, Francisco D. ; Joos, Geza

Author_Institution

Dept. of Electr. Eng., Univ. du Quebec, Montreal, Que., Canada

Volume

20

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

1541

Lastpage

1549

Abstract

This paper shows that when load centers require Static VAR Systems (SVS) for regulated voltage control, the strategy of using many, small, distributed SVS located at distribution buses is more advantageous than a few large bulk SVS located at the transmission or sub-transmission bus. The advantages are (i) standby to meet N-1 reliability criterion is reduced; (ii) costly high voltage transformers are no longer needed because the SVS can be connected directly to the low voltage distribution buses; (iii) distribution-side voltage support is more effective so that the total MVAr requirement of the distributed SVS is less. Simulation studies have demonstrated that the distributed SVS units operate harmoniously together.

Keywords

power system reliability; static VAr compensators; SVS; distributed static VAr systems; distribution buses; distribution-side voltage support; high voltage transformers; low voltage distribution buses; regulated voltage control; reliability; voltage support; Automatic voltage control; Capacitors; Insulated gate bipolar transistors; Low voltage; Reactive power; Solid state circuits; Static VAr compensators; Switches; Thyristors; Transformers; Distributed SVS; STATCOM; SVC; SVS; VAr compensation; static VAr system; static var compensator; voltage collapse; voltage support;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2004.838640

Filename

1413424