Research on predictive coordinated control strategy based on main steam dynamic characteristics

Abstract

Abstract:

There are great fluctuations on main steam pressure of thermal power units in coordinated control. A coordinated control strategy based on main steam pressure prediction is researched and applied to a 330MW unit. Based on data of the 330MW unit，parameters of the derived main steam pressure model is determined and the model is verified.Taking the main steam pressure model as prediction model, the trend of main steam pressure can be predicted based on current load instruction and combustion instruction. As the deviation between predictive main steam pressure and the current one is the energy of coal as fire in need，the deviation is employed to correct the energy of coal as fire taking coordinated control strategy, in order to overcome the inertia of furnaces and reduce main steam pressure fluctuations.The practical operation shows that the control strategy can decreases the fluctuation of main steam pressure and load.

Key words:

">">thermal power unit；predictive control；main steam pressure；coordinated control；model">

MA Liang.

Research on predictive coordinated control strategy based on main steam dynamic characteristics

[J]. Huadian Technology, 2019, 41(6): 57-60.

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Research on predictive coordinated control strategy based on main steam dynamic characteristics

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