In order to improve the connection rate and transmission efficiency of field network for power distribution grid, a dual-mode heterogeneous field network with high-speed power line broadband carrier and micro-power radio frequency wireless communication capabilities was designed. First, the topological structure of the field network, the networking process of the central node and the free nodes and the dynamic maintenance mechanism of the network were discussed in detail. Secondly, the routing measurement mechanism for creating a hybrid routing table and the improved layer limit shortest path routing algorithm were presented. On this basis, each node in the network could choose the optimal communication media at any given moment to create communication links with the adaptive data transfer speed according to the real-time hybrid routing table. Finally, the dual-mode heterogeneous field network was applied to the electricity consumption information collection system and tested in the laboratory and jobsite. The test results show that the dual-mode field network was more effective than the single-mode field network in shortening the reading meter time and increasing networking success rate.

为了提高配电网现场网络的连接速率和传输效率，设计了一种具有高速电力线宽带载波和微功率射频无线通信能力的双模异构现场网络。首先，详细讨论了现场网络的拓扑结构，中心节点和自由节点的组网过程以及网络的动态维护机制。其次，给出了用于创建混合路由表的路由测量机制和改进的层数限制最短路径路由算法。在此基础上，网络中的每个节点都可以在任意给定时刻选择最佳通信介质，以根据实时混合路由表以自适应数据传输速度创建通信链路。最后，将双模式异构现场网络应用于耗电量信息收集系统，并在实验室和现场进行了测试。测试结果表明，双模现场网络比单模现场网络更有效地缩短了抄表时间，提高了联网成功率。