Title: Micro tuning of reactance by split TCSC on transmission line

Authors: S. Meikandasivam, Rajesh Kumar Nema, Shailendra Kumar Jain

Addresses: Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal 462051, India. ' Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal 462051, India. ' Department of Electrical Engineering, Maulana Azad National Institute of Technology, Bhopal 462051, India

Abstract: The TCSC is a form of FACTS compensator that improves power transfer capability by regulating transmission line reactance. Proper tuning of TCSC results in the variation of inductive/capacitive reactance along with resonance region. A difficulty is observed on tuning the TCSC device; large change in TCSC reactance at critical region (nearby resonance region) prohibits possible fine control of power transfer over the transmission line. This paper therefore investigates the difficulties in tuning of single TCSC in critical region and alternatively proposes split TCSC operation which offers micro tuning of the line reactance. The micro tuning allows for wider degree of compensation over single TCSC operation. The study is carried out on a MATLAB platform and split TCSC results are compared with single TCSC. The simulated reactance characteristic and power angle curve over varied range of firing angles establishes wider degree of possible compensation; a striking benefit of Split TCSC operation.

Keywords: thyristor controlled series capacitor; TCSC; reactance characteristics curve; power angle curves; split TCSC; micro tuning; reactance tuning; transmission lines; FACTS compensators; power transfer; firing angles; simulation.

DOI: 10.1504/IJPEC.2010.037040

International Journal of Power and Energy Conversion, 2010 Vol.2 No.2, pp.95 - 108

Received: 06 Nov 2008
Accepted: 27 Oct 2009
Published online: 21 Nov 2010 *

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