TITLE:
Optimal Power Flow Using Firefly Algorithm with Unified Power Flow Controller
AUTHORS:
T. Hariharan, K. Mohana Sundaram
KEYWORDS:
Real Power Loss, Fuel Cost, Optimal Power Flow, Unified Power Flow Controller, Firefly Algorithm
JOURNAL NAME:
Circuits and Systems,
Vol.7 No.8,
June
27,
2016
ABSTRACT: Firefly algorithm is the new intelligent algorithm
used for all complex engineering optimization problems. Power system has many
complex optimization problems one of which is the optimal power flow (OPF).
Basically, it is minimizing optimization problem and subjected to many complex
objective functions and constraints. Hence, firefly algorithm is used to solve
OPF in this paper. The aim of the firefly is to optimize the control variables,
namely generated real power, voltage magnitude and tap setting of transformers.
Flexible AC Transmission system (FACTS) devices may used in the power system to
improve the quality of the power supply and to reduce the cost of the generation.
FACTS devices are classified into series, shunt, shunt-series and series-series
connected devices. Unified power flow controller (UPFC) is shunt-series type
device that posses all capabilities to control real, reactive powers, voltage
and reactance of the connected line in the power system. Hence, UPFC is
included in the considered IEEE 30 bus for the OPF solution.