Voltage Control in Southwest UtahWith the St. George Static Var System

Author

Sullivan, Dean ; Paserba, J. ; Reed, Gregory F. ; Croasdaile, T. ; Westover, Robert ; Pape, R. ; Takeda, Masatoshi ; Yasuda, Satoshi ; Teramoto, Hitoshi ; Kono, Yoshiyuki ; Kuroda, Ken-ichi ; Temma, Koji ; Hall, Wesley ; Mahoney, Duane ; Miller, David ; H

Author_Institution

Mitsubishi Electr. Power Products Inc., Warrendale, PA

fYear

2006

fDate

Oct. 29 2006-Nov. 1 2006

Firstpage

459

Lastpage

465

Abstract

PacifiCorp commissioned the St. George static VAr system (SVS) with a continuous rating of -35 to +100 MVar (transient rating -70 to +278 MVar) in June of 2006. This paper presents the Southwest Utah area transmission system, the requirements for voltage support, the planning and dynamic performance studies used in rating and verifying performance of the SVS, and provides an overview of the design and coordinated control strategy. An overview of the SVS stability model with integrated "smooth" and "stepped" susceptance control is also discussed.The St. George SVS is connected to the 138 kV bus of the St. George substation to enhance voltage control and dynamic VAr support for major disturbances in the Southwest Utah 138 kV and 345 kV transmission systems. The SVS coordinated control strategy employs local and remote shunt reactive devices to reduce SVS reactive steady-state output and to regulate the voltage at the local St. George 138 kV bus and at the remote Red Butte 138/345 kV substation

Keywords

power system stability; power transmission control; power transmission faults; power transmission planning; static VAr compensators; substations; voltage control; -35 to 100 MVAr; -70 to 278 MVAr; 138 kV; 345 kV; PacifiCorp; Red Butte substation; SVS stability model; St. George static VAr system; dynamic performance; planning; shunt reactive devices; southwest Utah; susceptance control; transmission system disturbances; voltage control; Capacitors; Control systems; Inductors; Power transmission lines; Reactive power; Shunt (electrical); Static VAr compensators; Substations; USA Councils; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Systems Conference and Exposition, 2006. PSCE '06. 2006 IEEE PES

Conference_Location

Atlanta, GA

Print_ISBN

1-4244-0177-1

Electronic_ISBN

1-4244-0178-X

Type

conf

DOI

10.1109/PSCE.2006.296355

Filename

4075794