Paralleling Multiple Static Synchronous Series Compensators Using Daisy-Chained Transformers

A modular and scalable series compensation technique for enhancing controllability and flexibility in power transmission in distributed power systems is proposed. The concept is based on paralleling multiple static synchronous series compensators (SSSC) through daisy-chained transformers to perform reactive power compensation, and thus control the amount and direction of the power flow over the transmission link. Each compensator unit is under an autonomous control for regulating its output voltage. Its output current is coupled to another compensator unit through one of the daisy-chained transformers, so that the transmission current is shared among the parallel-connected compensators. Modeling, design, and analysis of a compensator unit and the proposed multiparallel-connected SSSC (MSSSC) architecture in an elementary two-machine system will be presented. A 3-kVA MSSSC test bed with three-parallel-connected compensator units for a single-phase system has been built and evaluated. The steady-state and transient current-sharing characteristics in forward and reverse power transmission over the transmission link will be studied. The response of the MSSSC system with each compensator unit engaged sequentially will also be investigated.

[1]  Kevin Barraclough,et al.  I and i , 2001, BMJ : British Medical Journal.

[2]  A. Prudenzi,et al.  A Model of Large Load Areas for Harmonic Studies in Distribution Networks , 1997, IEEE Power Engineering Review.

[3]  K. K. Sen.  SSSC-static synchronous series compensator: theory, modeling, and application , 1998 .

[4]  Laszlo Gyugyi,et al.  Understanding FACTS: Concepts and Technology of Flexible AC Transmission Systems , 1999 .

[5]  Colonel Wm. T. McLyman,et al.  Transformer and Inductor Design Handbook, Fourth Edition , 2011 .

[6]  N.G. Hingorani,et al.  High Power Electronics and flexible AC Transmission System , 1988, IEEE Power Engineering Review.

[7]  J.J. Paserba.  How FACTS controllers benefit AC transmission systems , 2004, IEEE Power Engineering Society General Meeting, 2004..

[8]  Katsuhiko Ogata,et al.  Modern Control Engineering , 1970 .

[9]  G. Joos,et al.  The potential of distributed generation to provide ancillary services , 2000, 2000 Power Engineering Society Summer Meeting (Cat. No.00CH37134).

[10]  Gerald Thomas Heydt,et al.  The Next Generation of Power Distribution Systems , 2010, IEEE Transactions on Smart Grid.

[11]  Laszlo Gyugyi,et al.  Dynamic compensation of AC transmission lines by solid-state synchronous voltage sources , 1994 .

[12]  P. Ashmole,et al.  Flexible AC transmission systems , 1995 .

[13]  Hans B. Puttgen,et al.  Distributed generation: Semantic hype or the dawn of a new era? , 2003 .

[14]  Javier Chivite-Zabalza,et al.  Power quality analysis of a Synchronous Static Series Compensator (SSSC) connected to a high voltage transmission network , 2010, IEEE PES General Meeting.

[15]  Laszlo Gyugyi,et al.  Unified power-flow control concept for flexible AC transmission systems , 1992 .

[16]  Henry Shu-Hung Chung,et al.  Implementation and Performance Evaluation of a Fast Dynamic Control Scheme for Capacitor-Supported Interline DVR , 2010, IEEE Transactions on Power Electronics.

[17]  P. Chiradeja,et al.  Benefit of Distributed Generation: A Line Loss Reduction Analysis , 2005, 2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific.

[18]  T. J. Hammons,et al.  Flexible AC transmission systems (FACTS) , 1997 .

[19]  J.J. Paserba.  How FACTS controllers-benefit AC transmission systems , 2003, 2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495).

[20]  Roger C. Dugan,et al.  Distributed generation , 2002 .