针对系统保护通信专网局部节点与链路业务负载过重的问题，提出一种考虑负载均衡的系统保护通信专网路由规划方法。首先，阐述了系统保护通信专网的概念，分析了局部节点和链路业务负载过重的问题；然后，构建了综合考虑业务特性和备份路径的负载均衡路由规划优化模型，实现了模型的负载均衡路由规划求解；最后，以某省系统保护通信专网光传送网（OTN）拓扑为仿真网络，采用PSCPlanner电力通信网规划平台与K条最短路径（KSP）算法进行了对比实验。仿真结果表明：该方法均衡了链路容量，降低了业务请求拒绝率，有效地分配了网络资源。

Aiming at the problem of overloading local node and link traffic of the system protection communication private network, a route planning method with load balance in system protection communication private network is proposed. First, the concept of the system protection communication private network is explained, and the problem of overloading the local node and link services is analyzed. Then, an optimization model of load balance route planning considering delay, service characteristics and backup path is constructed and the solution of load balance route planning is realized. Finally, the optical transport network （OTN） topology of a provincial system protection communication network is taken as the simulation network. A comparative analysis experiment is performed with the K-shortest pathes（KSP） algorithm on the power communication network planning platform PSCPlanner. Simulation results show that the proposed method can balance link capacity, reduce the service rejection ratio and effectively allocates network resources.