Optimal Location and Cost Analysis of TCSC For Improving Power System Stability & Economy

Abstract

Due to the deregulation of the electrical market, difficulty in acquiring rights-ofway to build new transmission lines, and steady increase in power demand, maintaining
power system stability becomes a difficult and very challenging problem and it may always
not be possible to dispatch all of the contracted power transactions due to congestion of the
transmission corridors. The ongoing power system restructuring requires an opening of
unused potentials of transmission system due to environmental, right-of-way and cost
problems which are major hurdles for power transmission network expansion. Flexible ac
transmission systems devices can be an alternative to reduce the flows in heavily loaded
lines, resulting in an increased loadability, low system loss, improved stability of the
network, reduced cost of production and fulfilled contractual requirement by controlling the
power flows in the network. A method to determine the optimal location and cost Analysis of
thyristor controlled series compensators (TCSC) has been suggested in this paper based on
reduction of total system reactive power loss and real power performance index. The
proposed method has been demonstrated on IEEE 30 Bus power system in PSAT (Power
System Analysis & Simulation Toolbox) for effectiveness of the study.