Optimal estimation for fault section in power system based on harmony search algorithm

In this paper, the nonlinear optimal control problem is formulated as a multi-objective mathematical optimization problem. Harmony search (HS) algorithm is one of the new heuristic algorithms. The HS optimization algorithm is introduced for the first time in solving the fault section estimation performance in power systems. A case on optimal estimation for fault section in the part of the 230KV Southern Brazilian electric power system is presented to show the methodology´s feasibility and efficiency, compared with the existing fault section estimation in power system methods, the search time of the HS optimization algorithm is shorter and the result is close to the ideal solution, simultaneously.