Literature review on Improvement of Voltage Stability Through Optimal Placement of TCSC
Keywords:
FACTS, TCSC, IEEE - 14 busAbstract
The increase in power demand has forced the power system to
operate closer to its stability limit. Voltage instability and line
overloading have become challenging problems due to the
strengthening of power system by various means. The nature of
voltage stability can be analyzed by the production,
transmission and consumption of reactive power. One of the
major causes of voltage instability is the reactive power
unbalancing which occurs in stressed condition of power
system. Flexible AC transmission system (FACTS) devices play
an important role in improving the performance of a power
system, but these devices are very costly and hence need to be
placed optimally in power system. FACTS device like thyristor
controlled series compensator (TCSC) can be employed to
reduce the flows in heavily loaded lines, resulting in a low
system loss and improved stability of network. A method based
on line stability index has been proposed to decide the optimal
location of TCSC. The effectiveness of the proposed method is
demonstrated on IEEE - 14 bus power system.