LN2000-DEH Digital Electro-Hydraulic Control System

   

Overview:

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The plant digital electro-hydraulic control system LN2000-DEH is a distributed control system based on LN2000. The hardware of LN2000-DEH consists of the process control station (PU), engineer station, operator station and I/O modules of LN2000, which can realize the actual control of the speed and load of the plant generator set.

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Specifications:

    • Speed ​​control: speed control accuracy +1r/min
    • Load control: load control accuracy +1.5MW
    • Valve control
    • Pressure control before the machine
    • Automatically complete all operations of the plant from start-up preparation to full load.
    • Tightness, mobility and full stroke test of main and reheat steam valves
    • 103% overspeed, 110% overspeed test With two protection functions of 110% overspeed and OPC overspeed, the plant sends a trip signal in the emergency of load shedding or speed rise to ensure the safety of the unit.
    • Added FIRST, PIDEX, ANMSEX, DELAYON, DELAYOFF and other algorithm blocks
    • Added LN-GPS software for system timing through GPS satellite(if costumer request)