Research on medium-voltage distribution network planning based on heuristic ant colony algorithm

According to the specific characteristics of urban medium-voltage distribution network planning and combining database technology,a new medium-voltage distribution network planning method based on heuristic ant colony algorithm is studied,in which the pheromone updating strategy and optimization of ant colony algorithm are improved.When the substation location,power supply region and load distribution are known,the way that ants select is determined by using the pheromone and the heuristic information consisted of street length and load capacity.Then the distribution network local optimization proposal is determined.Finally,the optimized radial medium-voltage distribution network planning can be gotten which is distributed along the streets under the influence of local optimization.The experimental results show that the proposed method can make effective planning to meet planning requirements of the program and have appropriate calculation speed.The experimental results also prove that the proposed method is stable and the planning scheme is feasible.