According to the statistics of Vietnam Electricity Corporation, total power loss in recent years is about 9-15% of electricity production volume, in which distribution of the electrical network holds 5-7%. Then, researching methods for power loss reduction in the distribution network is very urgent demand. Reconfiguaration distribution network is one of methods to minimize power loss which is researched most. Currently, solution of reconfiguaration distribution network problem is optimal one under NP-hard class and then in order to solve this problem, there are some following methods to approach and solve the problem: – Seek by optimal mathematical method – Seek heuristic to seek enough good solution. – Seek near correct solution by natural emulation algorithm such as: Simulated Annealing algorithm, genetic algorithm, herd optimum, etc.