GCSC - gate controlled series capacitor: a new FACTS device for series compensation of transmission lines

Abstract

Controllable series compensation is a useful technique to increase tbc efficiency of operation of existing transmission lines and improve overall power system stability. Up to date, the TCSC is the most adopted solution whenever controllable series compensation is required. This paper introduces the Gate Controlled Series Capacitor (GCSC), a novel FACTS device for series compensation. The principle of operation and some prospective applications of the equipment nre presented. Special attention is given to the duaIity of the GCSC with the well-known thyristor controlled renctor, used for sbunt compensation. It is shown that the GCSC can be more attractive than the TCSC in most situations. Simulation results illustrate the time response of the equipment and its ability to control power flow in a transmission line. Finally, technology issues regarding high power self commutating valves are discussed. Ztidex TermsScries Compensation, TCSC, GCSC, FACTS. U&. degree in Electrical Engineering from Federal University of Rio de Janeiro in 1998. He is cwenlly w o r m towards his doctorate degree at Federal University of Rio de Janeiro. From 1994 to 1996 he worked at Fumas Centrais Eltirifas W A as a hydro power plant maintenance engineer. Since 1996 he works at CEPEL as a research engineer. His main fields o f interests are power quality and FACTS. Fhbio Domingues de Jesw was bom in Bnrretos, S b Paul0 State, B m l , on M a y 12, 1971. He reoeived the E. S. degree in Electrical Engineering fiom Federal Institution of High Education of SHO Jo%O del Rei, Brazil in 2000 and the USc. degree at Elecbical Engineering Deprbmni in Federal University of Juiz de Fora, Brazil in 2002. He is pursing his D.Sc. degree at Electrical B m i l His present research interests include the high-power electronics, mdysis and mni~ol in FACTS. JX.k Alvm Jr. (M'92F was h m in Juiz de Fora, B d , on November 30, 1963. He received the B.Sc., M.Sc. and D.Sc. degrees in electrical engineering, in 1986,1991 and 1999, respectivety. fiom the Federal University of Rio de Janeiro. Since. 1995 he has been w o r m at CEPEL, the Brazilian Eleclrical Energy Research Center. He is currently Projwt Manager. Dr. Aives' research interests are in the analysis of HVdc "ission systems, FACTS devices, Power Electronic controllers, Distribution Systems and Metering. He became a Member of the Institute of Electrical and Elecbnics Engineers (EEE) in 1992. He is currently a Member of the IEEE Power Engineering Society and Sectetary of IEEE Rio de Janeiro Section. Andd Bmnm "99) was born in Nova Igmqy Rio de Janeiro, Brazil, on Junc 27, 1967. He received ttte B.Sc. and M.Sc. degrees in electrical enpineering, in 1990 and 1994, respectively fiom the Gama Filho University and from the Catholic University of Rio de Janeiro. From 1990 to 2003 he was with =EL, initially as a graduafd student and then as a research engineer with inkrest in the transienddynamic analysis of power systems includmg HVdc transmission and FACTS devices. In 2004, Mr. Bianco joined Andrade & Canellas Cons...

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