“…Various optimization techniques such as analytical method [2] and articial intelligence approach such as hybrid genetic algorithm and simulated an-Manuscript received on August 19, 2013 ; revised on September 6, 2013. 1,2 The authors are with Department of Electrical Engineering, Faculty of Engineering, Kasetsart University, Thailand., E-mail: wbuaklee@hotmail.com and fengksh@ku.ac.th nealing, combined genetic algorithm [3] and particle swarm optimization [4], tabu search, non-linear and dynamic programming, dierential evolution algorithm and heuristic methods [5] have been widely employed to seek the optimal location, size and operating mode for the DG interconnection. The DG application is very complex multi-objective nonlinear optimization problem.…”