用于中小型发电厂的数据采集系统——总体结构及功能概述

Data Acquisition System Applicable to Small and Medium Size Thermal Power Plant──Structure and Function Layout

通过分析当前中小型电厂的现状 ,提出一种适用于中小型火力发电厂的分布式数据采集系统的设计方案。该实时数据采集系统具有一些特点 ,如通用数据采集 ,分布式硬软件等。系统中有5种电路板用来组成通信控制模块 ,热工数据采集模块 ,电气数据采集模块以及开关数据采集模块。采用一种带继电器的热工数据采集的方法。多任务实时操作系统根据其重要性为各个任务设定启动时间。

According to actual complexion of small and medium size power plants in China, a project of distributed data acquisition system applicable to them is put forward.This real time data acquisition system has some specific characteristics,such as general purpose data acquisition,distributed HW & SW,etc.There are five kinds of circuit card in it,which build up communication control module,pyrology data acquisition module,electric data acquisition module and switch data acquisition module.A new method of pyrology data acquisition using relay is applied.The multi task real time operation system can set the starting time for each task according to its importance.Finally,a set of communication protocol is introduced.It is proved that the protocol is effective in the distributed data acquisition system.