输变电设备物联网通信网络结构及拓扑分析

Communication Network Structure and Topology Analysis of Internet of Things for Power Transmission and Transformation Equipment

为了满足输变电设备物联网复杂信息流传输需求,提出了一种信息通信网络结构。信息结构上采用IEC61850分布式结构,实现主备倒换;在通信网络中,采用2级分层网络结构分别实现接入控制和流量控制。设计输变电设备网络拓扑结构,采用有线、无线异构网络方案来提升网络系统可靠性并为资产巡检提供业务通道。结果表明:选择异构冗余的双星型网络作为汇聚层的组网方案,可支持由15个智能传感器与3个主智能电子设备(IED)构成的变电站监测网络;该组网支持主IED设备之间的主备倒换且倒换时间≤18 s。因此,以IEC 61850为基础分层的双网异构网络结构可满足全景信息等应用要求。

To satisfy the demands of complex information transmission of internet for power transmission and transfor- mation equipment, we put forward a network architecture of information and communication. IEC 61850 distributed architecture was adopted in the information structure to achieve standby switchover. Two-layer network was used in the communication network to implement access control and flow control. Then we designed a network topology of power transmission and transformation equipment, and used wired and wireless heterogeneous network solutions to improve the reliability of network and provide service channel for asset inspection. The results show that selecting the dual-star net- work redundancy scheme as the networking solution of convergence layer network can support the substation monitoring network consisting of fifteen smart sensors and three main IEDs. And the network supports the standby switchover with the switching time of less than 18s among the master IED equipment. Therefore, taking the IEC 61850 as based double layered architecture of heterogeneous network can satisfy the requirements of panorama information application.