matlab编程，牛拉法计算潮流，选取了34节点的配电网网络模型，通过对单个以及多个分布式电源的接入位置以及容量的不同情况对34节点配电网的网损以及节点电压状况进行了分析。-Matlab programming, cattle pull method to calculate the trend,　the 34-node distribution network model, through a single and multiple distributed power supply access location and capacity of the different conditions of the 34-node distribution network loss and node voltage The situation was analyzed.