基于VLAN技术的电子式互感器数字通讯的研究

Study on Digital Interface of Electronic Instrument Transducers Based on VLAN

基于以太网的电子式互感器数字输出方案使用组播/广播模式进行通讯,存在载波冲突、网络负载过重和广播风暴等问题。在分析了电子式互感器数字通讯和VLAN技术特点的基础上,对变电站网络建设和电子式互感器数字传输帧做了一定的改进,将VLAN技术应用于电子式互感器数字通讯中,使其利于互感器与二次设备利用组播/广播模式进行实时数据传输,从而提高了电子式互感器和二次设备之间通讯的实时性和可靠性。

Adopted the multicast/broadcast in the communication of the digital output for electronic instrument transducer based on Ethernet, there are some disadvantages, like carrier collision, network overload, broadcast storm and so on. From the analysis of the communication of electronic instrument transducer and the VLAN technology, this paper improves on the network building of substations and the communication frame of electronic instrument transducers by applying VLAN technology into communication. The real-time feature and reliability of communication between electronic instrument transducers and the secondary devices is ameliorated.