In mawan power plant three sets of the application of DCS system

Abstract: in mawan power plant more information on the application of three sets of DCS system produced by excellent flow meter, flow meter manufacturer to offer you the quotation. Shenzhen mawan power plant a total installed capacity of 6300 mw, six sets of the host and main auxiliary equipment are the same, the boiler for Harbin boiler factory introduction (combustion engineering companies in the United States CE） Technology in the production of HG - 1025/18. 2 - YM6 type, subcritical pressure reheat at a time. More flow meter manufacturers choose model price quote you are welcome to inquire, here are three sets of DCS system in mawan power plant the application of comparative article details. Shenzhen mawan power plant a total installed capacity of 6 & times; Six units of 300 mw, the host and main auxiliary equipment are the same, the boiler for Harbin boiler factory introduction (combustion engineering companies in the United States CE） Technology in the production of HG - 1025/18. 2 - YM6 type, a subcritical pressure reheat forced circulation drum boiler. Six sets per boiler design HP medium-speed coal mill, by swinging cut corners of once-through burner decorate garden combustion. Coal-fired boiler MCR conditions. 126. 3 t / H。 Have three layers of oil gun boiler design, use 0 # light diesel oil, used in the ignition and steady combustion under low load. Oil system of zui large output by 30% of the rated condition of boiler design. Steam turbine for Harbin turbine factory production N300 - introducing American Westinghouse technology 16. 7/537/537 type subcritical, a reheat, high pressure cylinder uniaxial reactionary duplex double exhaust steam condensing steam turbine. Door main steam turbine start adopts high voltage control mode. In 2900 r/MIN, the high pressure main steam door to tone and high voltage switching, into a high pressure tone control acc, loading mode. Each unit is equipped with two main steam door, six high tone, two medium pressure main steam door, two of the tone. Generators manufactured by Harbin electric, water - cooling way Hydrogen - Hydrogen. No. 1 and unit 2 in U. S. Bailey INFI - of the company Two units of 90 type of distributed control system, in 1993 and 1994; Unit 3 and 4 using PROCONTROL - ABB technology of Switzerland Two units of p-type distributed control system, in 1996 and 1997; 5 and 6 units adopt XPDS - Shanghai xinhua company Type 400 distributed control system, unit 5 in November 2002 and put into operation, the following are the three systems in mawan power plant design and application of a simple comparison. A comparison of compare 1, network structure, hardware, INFI - Using redundant factory ring (90 PlantLooP) Connects the central processing unit and OIS, communication medium for coaxial cable, the cable quality and the contact resistance, the demand is higher, when the loop in the breakpoint and poor contact data communication is blocked. Ring network structure of the communications speed also the restriction of the modular bus speed, make the communication rate slower. Our factory # 2 unit has repeatedly occurred due to the fault of the coaxial cable of the communication interrupt, endanger the safe operation of the unit, coaxial cable as a communications medium exists inherent defects. PROCONTROL - P while using the local area network structure, but its local area network (LAN) still implemented by coaxial cable, coaxial cable of the inherent defects still exist. Between the part as the man-machine interface and real time control system is to connect the server, so in the operation of higher requirements to the server, the server once appear problem, monitor and control equipment that is lost. Our factory was due to a server crash caused by loss of monitoring and control field devices for more than 20 minutes. xdp - 400 using optical fiber as communication medium, and designs double loop form, fundamentally overcome the deficiency of coaxial cable. The ring network is a virtual ring network that is physically ring bus logic thoughts, have network self-healing function, when the ring or damage any equipment or network in the breakpoint will not result in system communication interrupt, and because the man-machine interface system and decentralized processing unit adopts the same communication media and communication protocol ( TCP/IP） , makes communication hardware and software are very simple and clear, at the same time, it makes the expansion of the system is very easy. 2, the comparison of module PROCONTROL - P14 module in the system there is not the main module and the module, and no input module and output module, the module type of the system is a relatively less, the function of the module and generality are stronger. But because PROCONTROL - P system for the combination of P13 and P14, more communication module between two systems, so the overall module types than INFI - even And XDPS - 90 More than 400. xdp - 400 system module type if remove the DEH/MEH system dedicated module should say is very few, especially the whole system is only a kind of communication interface module, enough to explain the high level of integration, due to the shrinking of module type, the corresponding types of spare parts is also reduced.

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