分布式电网动态监测系统通信网关的研制

介绍了电网动态监测系统中的通信网关。针对监控系统具有多种通信介质、互联不方便的情况，提出开发数字通信网关。首先从硬件和软件两方面详细讨论了数字通信网关的研发方案。硬件设计采用高性能的CPU、高速以太网控制芯片，以太网光接口和电接口，高速光串行接口；软件设计分为两部分：第1部分为驱动程序开发，以太网接口驱动针对所采用的以太网控制芯片开发，光串行接口链路层驱动采用了高级数据链接控制(HDLC)协议；第2部分应用程序开发，主要介绍了以太网接口的应用程序的开发思路。最后从网络组成模式、软件设计、通信协议的角度详细讨论了数据传输的实时性。

STUDY OF GATEWAY IN A DISTRIBUTED POWER GRID DYNAMIC MONITORING SYSTEM

This paper is concerned with the gateway in a distributed power grid dynamic monitoring system, and proposes the development of a high-speed digit gateway aiming at that there are multi-media of communication subsystems in a power grid monitoring system. The scheme of hardware and software development of the gateway is discussed at length. The hardware design adopts a high-performance CPU, high-speed Ethernet controller, Ethernet optical interface and electrical interface and high-speed serial optical interface. The design of software consists of two parts, the first part is developing Ethernet interface driver according to different Ethernet controllers adopted, and developing the serial optical interface driver using the HDLC protocol while the second discusses the application program development, with emphasis on the development idea about the Ethernet interface. Finally, the real-time performance of the gateway is discussed from the point of view of network structure, software design and communication protocols.