Genetic Algorithm Based Fuzzy Multi-Objective Approach to FACTS Devices Allocation in FARS Regional Electric Network

Authors

Department of Electrical Engineering,Iran University of Science and Technology

Abstract

In this investigation, a novel approach is presented to nd the optimum locations and capacity
of Flexible AC Transmission Systems (FACTS) devices in a power system using a fuzzy
multi-objective function. Maximising the fuzzy satisfaction allows the optimization algorithm
to simultaneously consider the multiple objectives of the network to obtain active power loss
reduction; i.e., new FACTS devices cost reduction, robustifying the security margin against
voltage collapse, network loadability enhancement and a voltage deviation reduction of the
power system. A Genetic Algorithm (GA) optimization technique is then implemented to
solve the fuzzy multi-objective problem. Operational and control constraints, as well as load
constraints, are considered for optimum device allocation. Also, an estimated annual load pro le
has been utilized in a Sequential Quadratic Programming (SQP) optimization sub-problem to
nd the optimum location and capacity of FACTS devices, accurately. A Thyristor Controlled
Series Compensator (TCSC) and a Static Var Compensator (SVC) are utilized as series and
shunt FACTS devices in this study. The Fars regional electric network is selected as a practical
system to validate the performance and e ectiveness of the proposed method.

Keywords

Scientia Iranica
Volume 15, Issue 6 - Serial Number 6
Transactions on Computer Science & Engineering and Electrical Engineering (D)
December 2008

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