蚁群算法是一种用来在图中寻找优化路径的机率型算法。是一种求解组合最优化问题的新型通用启发式方法，该方法具有正反馈、分布式计算和富于建设性的贪婪启发式搜索的特点。通过建立适当的数学模型，基于故障过电流的配电网故障定位变为一种非线性全局寻优问题。-Ant colony algorithm is a method used to find optimal path in the graph the probability-based algorithm. Is a combination of optimization problems to solve new general heuristic method, which has a positive feedback, distributed computing and constructive and the greedy heuristic search features. Through the establishment of an appropriate mathematical model, over-current fault-based distribution network fault location into a nonlinear global optimization problem.