数字化变电站过程层的通信技术研究

Research on digital substation process level communication technology

分析了数字化变电站过程层通信对象(采样值信号和开入开出信号)的特点及传输方式。根据过程层总线上通信对象实时性和可靠性的要求,提出在实现过程中,除了选择适合的总线结构,还需合理划分VLAN网段和优先级,考虑网络流量负荷、传输时延和二次装置的接收和处理能力等因素,使得在保证装置可靠性的基础上,提高系统的灵活性和互操作能力。

This paper analyses the characters and transmission modes of the digital substation process level objects（sample values,input and output signals）.To the requirement of timing and reliability,it is necessary to choose the appropriate bus architecture,and other elements such as VLAN priority,network load,transmission delay and secondary device ability to ensure the reliability and improve system flexibility and interoperability.