Research on Optimization Control of Thermal Power AGC based on Feedforward Control and PID Variable Parameter Modification
In the context of reform of power industry,thermal power plants are faced with the dual chal-lenge of providing both economical and high-quality electricity.From the power supply side,users ex-pect to obtain a stable and high-quality power supply to meet their electricity needs and changes.This requires the power grid to be able to provide a standard voltage and frequency to ensure the quality of power.However,thegriditselfdoesnotproduceelectricity,itismainlyresponsibleforthetransmission and distribution of electricity.Therefore,the quality of electricity ultimately depends on the generating end.Optimization of automatic generation control system(AGC)is an effective strategy to ensure that the generating end can provide high-quality power to the grid.The optimization of AGC control system can not only improve power generation efficiency and reduce costs,but also ensure the stability and reliabili-ty,and meet the high standard of power quality requirements of users.Taking the thermal power unit of Zhongwei Power Plant as an example,this study carried out the optimization for the static feedforward control of the boiler main control,the modification for the PID variable parameters of the boiler main con-trol and the upper and lower limits of the PID output of the intermediate point superheat.
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