数据采集系统(DAS)调试

1.系统概述

1General Description Of System

数据采集系统（DAS）没有设置单独的控制处理器，而是将相关测点分布在MCS、SCS、FSSS、ECS等各系统中，但它是整个DCS的一个重要功能，其主要功能如下：No independent control processor is provided for the Data Acquisition System(DAS) while related measurement points are distributed in MCS,SCS,FSSS and ECS,but the system is an important function of the whole DCS and main functions are as following:

a)数据采集处理及显示，以图表（操作画面、表格、曲线等）的形式显示控制对象工艺参数状态信息；

a)Data acquisition treatment and display,displaying status information of all the parameters of the control object in mode of graphics(operation menu,sheets and curves);

b)记录参数；

b)Recording parameters;

c)记录事件；

c)Recording events;

d)计算参数；

d)Calculating parameters;

e)异常运行状态报警及事故信号；

e)Alarm of abnormal operation status and event signal;

f)工艺过程的信息管理及归档；

f)Information management and archive of technological processes;

g)连续检测及诊断硬、软件状态；

g)Continuous detection and status diagnosis of hardware and software;

h)检测测量回路及指令通道的故障；

h)Detecting faults of measurement loops and instruction channels;

i)报表打印；

i)Printing report sheets;

j)事故追忆。

j)Sequence of events(SOE);

2.调试目的

2Preparation Of Purpose

DAS即计算机数据采集系统，英文全称Data Acquisition System。DAS是机组主设备及各种辅助设备在启停、正常运行和事故工况下的主要监视和记录手段。反应机组汽机、锅炉、电气各专业的子系统的运行状态。它向运行人员提供大量有用的实时信息和经过处理的信息，指导和协助运行人员进行正确的操作以保证机组在正常工况下长期安全经济运行，以及事故与启停状态下的正确处理。

DAS is short for Data Acquisition System.DAS unit is a master device which records and monitors the variety of auxiliary equipment in the startup and shut down,normal operation and accident conditions.DAS provides the running state about all the sub-system of turbine,boiler and electrical.It provides a useful real-time information to the operating personnel and the correct action to ensure the correct handling of the unit under normal operating conditions in long time safe and economic,accident,startup and shut down state after processing the information,guidance and assistance to operating personnel.

3.调试前应具备的条件

3Necessary Conditions And Preparation Before Commissioning

3.1数据采集系统的硬件设备具备通电条件。

3.1Installation of hardware equipments is finished and conditions for power initialized are prepared.

3.2数据采集系统的接地系统施工、预置电缆、通讯网络安装完毕。检查合格。

3.2Construction of grounding system in DCS and installation of pre-installed cables and communication network are finished and they are qualified after check.

3.3不停电电源(UPS)安装调试完毕，具备投入条件。

3.3Installation and commissioning test of the uninterrupted power supply(UPS)are finished and UPS possesses conditions for putting into operation.

3.4控制室及电子间空调系统应投入使用，保证温度稳定，控制室及电子间无灰尘。照明系统正常。

3.4Air conditioning systems in the control room and electron room should be put into operation to make the temperature stable;the control room and electron room are free of ducts.The illumination system is normal.