Abstract




 
   

Vol. 2, No. 1&2 (May 1989) 25-34   

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  NEW METHODS FOR HARMONIC REDUCTION IN T. C. R. BY SEQUENCE CONTROL OF TRANSFORMER TAPS
 
S. H. Hosseiny & G. R. Zaker

Department of electrical Engineering
University of Tabriz
Tabriz- Iran
 
( Received: September 1988 )
 
 

Abstract    Thyristor controlled static compensators consist of two basic schemes, TCR and TSC. Owing to the discontinuous current in TCR, current harmonics are generated in the supply system. This paper introduces two methods for the reduction of these harmonics. On the basis of the coordination or uncoordination of turn ratios with harmonic reduction levels, each method is described in two alternative schemes. By using either one of these methods, the magnitude of harmonics may be reduced and their undesirable effects in power systems minimized.

 
 

References   

1. Miller, T. J. E., Reactive power control in electric systems, John Willey and Sons, (1982).
2. Patel, H. K. and Dubey, G. K., Harmonic reduction in the static compensator by sequence control of transformer taps. , IEE Proc. Gen., Tan. and Dist., (1983), 300-305.
3. Gyugyi, L., Otto, R. A. and Putman, T. H., Principles and application of static thyristor control shunt compensators. , IEEE trans., PAS-97, (1987), 1794-1804.
4. Gyugyi, L. and Taylor, E. R., “Characteristics of static thyristors controlled shunt compensators for power transmission system applications” , IEEE, PAS-99, (1980), 1794-1804.





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