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Advances in Energy Research
  Volume 3, Number 4, December 2015 , pages 235-249

Location of static var compensator in a multi-bus power system using unique network equivalent
Nagendra Palukuru, Sunita Halder nee Dey and Subrata Paul

    This paper presents a new approach to identify the suitable location for static var compensator in a multi-bus power system for voltage stability enhancement using a unique two-bus u-network equivalent derived with optimal power flow solution of the actual system at different operating conditions. An index named equivalent network based index (ENBI), derived from the parameters of two-bus equivalent of the multi-bus power system is used for positioning the static var compensator. The proposed approach has been tested under simulated condition on a practical power system (203-bus Indian Eastern Grid) for illustration purpose. Simulation results obtained with the proposed approach are compared with the results of well-established L-index method. Improvement in voltage stability margin using static var compensator is also investigated for the test system considered.
Key Words
    two-bus u-network equivalent; optimal power flow; static var compensator; L-index; equivalent network based index; global voltage stability indicator
Nagendra Palukuru: Department of Electrical & Electronics Engineering, Technical Education, Andhra Pradesh, India
Sunita Halder nee Dey and Subrata Paul: Department of of Electrical Engineering, Jadavpur University, Kolkata, West Bengal 700032, India

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