Generation Expansion Planning by a Modified SFL Algorithm

In this paper, Generation Expansion Planning (GEP), is modeled as an optimization problem in which the objective function is to minimize the total investment, operation, and outage (energy not served) costs of power system as well as salvage value of investment costs. Generation system reliability is assessed and provided by means of EENS and LOLP indices. To solve the GEP problem, a new Modified Shuffled Frog Leaping namely MSFL algorithm is proposed. A new frog leaping rule and a new strategy for frog distribution into memeplexes is introduced to improve the local exploration and performance of the original SFL algorithm. To show the effectiveness of the MSFL algorithm, it is applied to a test system with 15 existing power plants and 5 types of new candidates, for a 12-years and a 24-years planning horizon. The original SFL algorithm and the Genetic Algorithm (GA) are also applied to solve the GEP problem. Simulation results show the advantages of the proposed MSFL algorithm over the original SFL and GA.