电力网络中，进行节点优化。按照增加的出线数最少者优先编号，并进行试消元，然后重复这个过程。动态优化是引入注入元最少的一种节点编号优化方法。-Electricity network, the node optimization. Qualifying number of least priority in accordance with the increase in number, and try elimination, and then repeat the process. The dynamic optimization is to introduce the the injected least a node number optimization method.