Research And Implement Of SCADA Control System

This article tells about how to use SCADA system in the natural gas monitoring system in china. It expatiates the popular unite mode of SCADA system in the natural gas application domain.by introduce of the SCADA system . It explains the foreground of virtual device application in the control field of energy sources and brings forward his own attitude in the natural gas application domainThe research subject links with practice project, the transform project of SCADA system in ChongQing WenXingWan. Own to analyse the need of naturel gas system,doing the technological transformation about the natural gas monitoring system.Aimed at the peculiarity of the natural gas monitoring system,high fatalness, hysteresis quality,We adopted the PLC module control,and make use of the virtual device controled the interface.The SCADA system is used for industry automation and process surveillance and control of applied system, pass to use various software, operate a personnel ability the convenience keep the view ground to obtain the spot solid hour data, and descend to reach control to orderany in good time, attain solid hour supervise and control to collect with data of purpose.Among them, how procedure is carry on the data commutation with exterior data source or from on the scene is report to the police an information is the key of the SCADA software.The SCADA software drives procedure through an I/ O from the spot data for the I/ O equipments to acquire solid, to solid hour the data carry on necessity of process processing after, according to set the request and operate the personnel's instruction to deliver the control data to the I/ O equipments, to performance organization implement adjust.The long range supervision station from measure appearance,carry out organization and insulate safe grid,the long range terminal unit PLC and correspond by letter an equipments to constitute, the PLC and the gauge and the control equipments of the spot connect with each other, solid the hour collect each craft parameter need, if spirit of pressure,temperature,discharge,leak density,the valve door work appearance etc.The long range supervision station passes the correspondence network measure of the data passes a lord to control center up, accepting a lord to control the instruction that the center descends to reach in the meantime, accepting the direct and the management that the lord controls center.This article confirmed the hardware composition of the SCADA control system,and protracted the schematic diagramand the connection diagram of the control system.The system software is composed by LabVIEW. It only altered a little about the intrinsic system and added some equipment.