DocumentCode :
276290
Title :
Vector analysis and control of advanced static VAr compensators
Author :
Schauder, C.
Author_Institution :
Westinghouse Electr. Corp., Baltimore, MD
fYear :
1991
fDate :
17-20 Sep 1991
Firstpage :
266
Lastpage :
272
Abstract :
The advanced static VAr compensator (ASVC) is based on the principle that a self-commutating static inverter can be connected between three-phase AC power lines and an energy-storage device, such as an inductor or capacitor, and controlled to draw mainly reactive current from the lines. This capability is analogous to that of the rotating synchronous condenser and it can be used in a similar way for the dynamic compensation of power transmission systems, providing voltage support, increased transient stability, and improved damping. The authors present a simplified mathematical model of the ASVC that has made it possible to derive the transfer functions needed for control system synthesis. The resulting control system designs are briefly outlined and further analysis is presented to show the behaviour of the ASVC when the line voltage is unbalanced or distorted. The analysis is based on a vectorial transformation of variables, first described by R.H. Park (1928) for AC machine analysis, and later, using complex numbers, by W.V. Lyon (1954) in the theory of instantaneous symmetrical components
Keywords :
control system synthesis; invertors; power systems; static VAr compensators; advanced static VAr compensators; capacitor; complex numbers; control system synthesis; damping; dynamic compensation; energy-storage device; inductor; instantaneous symmetrical components; mathematical model; power transmission systems; reactive current; self-commutating static inverter; three-phase AC power lines; transfer functions; transient stability; vector analysis; vector control; vectorial transformation; voltage support;
fLanguage :
English
Publisher :
iet
Conference_Titel :
AC and DC Power Transmission, 1991., International Conference on
Conference_Location :
London
Print_ISBN :
0-85296-517-6
Type :
conf
Filename :
153915
Link To Document :
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