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过程层是智能变电站区别于常规变电站的重要特点之一,其组网方案直接影响保护、控制功能的实现和网络设备的投资。对几类典型过程层网络拓扑结构、采样值传输协议进行了分析比较,确定适合智能变电站工程的过程层网络方案;结合变电站现状,给出设备选型、功能需求等方面的设计实例。
The process layer is one of the most important characteristics of an intelligent substation that is different from conventional substations. Its networking solution has a direct impact on the protection and control functions and the investment in network equipment. Several typical process layer network topologies and sample value transmission protocols are analyzed and compared to determine the process layer network solution suitable for intelligent substation projects. According to the status quo of substations, the design examples of equipment selection and function requirements are given.