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Dynamic strategy based parallel GA coordinated with FACTS devices to enhance the power system security

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3 Author(s)
Mahdad, B. ; Dept. of Electr. Eng., Univ. of Biskra Algeria, Biskra, Algeria ; Srairi, K. ; Bouktir, T.

Under critical situation the main preoccupation of expert engineers is to assure power system security and to deliver power to the consumer within the desired index power quality. The total generation cost taken as a secondary strategy. This paper presents an efficient decomposed GA to enhance the solution of the optimal power flow (OPF) under severe loading conditions. At the decomposed stage the length of the original chromosome is reduced successively and adapted to the topology of the new partition. Two sub problems are proposed to coordinate the OPF problem under different loading conditions: the first sub problem related to the active power planning under different loading factor to minimize the total fuel cost, and the second sub problem is a reactive power planning to make fine corrections to the voltage deviation and reactive power violation using a specified number of shunt dynamic compensators named static Var compensators (SVC). To validate the robustness of the proposed approach, the algorithm proposed tested on IEEE 30-Bus under different loading conditions and compared with global optimization methods (GA, EGA, FGA, ACO) and with two robust simulation packages: PSAT and MATPOWER. The results show that the approach proposed can converge to the near solution and obtain a competitive solution at critical situation and with a reasonable time.

Published in:

Power & Energy Society General Meeting, 2009. PES '09. IEEE

Date of Conference:

26-30 July 2009