Improvement of system stability margins using coordination control of Static Var Compensator (SVC) and Thyristor Controlled Series Capacitor (TCSC)

  • Venu Yarlagadda
  • K. R. M. Rao
  • B. V. Sankar Ram
Conference paper
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 150)


The Thyristor Controlled Series Compensator (TCSC) and Static Var Compensator (SVC) are variable impedance Flexible AC Transmission Systems (FACTS) Controllers. A combination of the TCSC and the SVC installation is proposed to acquire superior performance for the power system. The coordination between the two pieces of equipment is designed with the SVC treated as the supplement of the TCSC. When operation of the TCSC is constrained by the inherent limitation of equipment, such as due to the firing-angle limitation of the thyristors, the adjustable SVC can supply the auxiliary support to improve the overall performance. The voltage and angle stability margins can be greatly improved with the compatible control schemes of the TCSC and the SVC.


TCSC SVC Co-ordination control of SVC and TCSC Design of small scale TCSC model Variable impedance FACTS controllers Single machine two bus system Voltage stability P–V curves and P-δ curves 



We are immensely thankful to Management and Principal of VNR VJIET for providing R&D lab and other facilities to carryout this work.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Venu Yarlagadda
    • 1
  • K. R. M. Rao
    • 2
  • B. V. Sankar Ram
    • 3
  1. 1.EEE DepartmentVNR VJIETHyderabadIndia
  2. 2.EEE DepartmentMJCETHyderabadIndia
  3. 3.EEE DepartmentJNTUHHyderabadIndia

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