分布式网络协议及其在电能表上的应用

Distributed network protocol and its application in electric energy meter

文章简单介绍了分布式网络协议—DNP3的协议模型和帧结构,重点对DNP3对象定义及分类、DNP3事件定义及分类、DNP3类对象等进行了描述。给出了在电能表上实现DNP3的方案,针对DNP3数据对象类型,结合电能表的功能要求,对电能表的数据根据进行分类,给出电能表数据映射到DNP3对象的实例。最后介绍了DNP3常见的通信方式,并描述了一个典型的电能表和DNP3主站之间的通信交互过程。

This paper briefly introduces the model and frame structure of the distributed network protocol-DNP3,and focuses on the description of the definition and groups of objects,the definition and types of events and the class objects of DNP3.This paper provides the implementation of DNP3 on the electric energy meter.The data base of the electric energy meter is classified according to the groups of DNP3 data object,combined with the function requirements of the electric energy meter.And an example of how to map the electric energy meter data to the DNP3 objects is also provided.Common communication methods and a typical communication interaction process between the meter and DNP3 master is shown at the end of this paper.