Abstract:
This paper presents a modified Particle
Swarm Optimization approach for optimal placement
and sizing of multi type FACTS devices to minimize the
real power loss in the transmission system and thereby
enhancing its voltage stability. The optimal placement,
number, type of FACTS devices and its size are found
out using comprehensive Learning Particle Swarm
Optimization (CLPSO) and Social Learning Particle
Swarm optimization (SLPSO) techniques. Using this
approach the percentage of real power loss reduction
for different types of FACTS devices placed at different
locations is determined. Also, the voltage stability of
the transmission line and load bus is assessed using
Line Voltage Stability Index (LVSI) and Bus voltage
stability index (BVSI). The multi type FACTS devices
used in this work is SVC, TCSC and UPFC. The
proposed technique is implemented in MATLAB
platform and the results are compared with Particle
swarm optimization (PSO) approach. The test systems
considered are IEEE 14 bus system and IEEE 57 bus
system. The analysis in this work reveals that SLPSO
approach is best suitable for the enhancement of
voltage stability in transmission system.
