Study And Application Of The Load Intelligent Regulating System Of The Total Thermoelectric Plant

As to piping-main scheme unit, Boiler piping-main steam pressure is the important parameter of signifying the running state of the boiler. It not only concerns the safe running of the boiler set directly but also reflected the equilibrium question for needing of energy in the combustion process, so we must manage the piping-main pressure and control it within the specific limits . So need take requisite measure coordinate unit heating and control of generate electricity, while participating in the electric wire netting regulation , try unit's ability best to meet the instantaneous demand for electric network, coordinate the relation of unit heating load and electricity generated , utilize heat of stocking of the boiler rationally, give play to the swift function of the turbine, meet the instantaneous demand for electric network, while give consideration to the unit's own equilibrium stability; Coordinate equilibrium cooperation among boiler water , coal , wind , cigarette and electricity , realize the security , economy ,optimize controlling of the unit.As to piping-main scheme boiler, there is no simple direct corresponding relation by virtue of supply and demand of energy among the boiler and turbine, the load of the boiler regulates usually adopts the control method of indirect energy balance, according to the main steam pressure signal of the energy balance relation among the reflecting boiler and turbine, as reflect boiler indirect energy signal, through regulate operation calculate and control boiler burning rate (coal amount and combustion-supporting air amount ,etc.) value, meet turbine side to requirement that boiler exert.The whole factory hot load intelligence regulate system that this text study and employ basic function is: Coordinate the energy balance relation between turbine and boiler, hot load of boiler order formed by to actual power and factory total heating load after the revision, when total output heat meet unit total heating load and electricity generated , steam header pressure remain stable , while the energy between turbine and boiler unbalance, steam header pressure deviate from setting value, the difference between steam header pressure and setting value main basis to correct the energy unbalance of boiler and turbine.System can generate automatically boiler load order according to unit actually power , total demand of heating load...