Research and Application of Prediction Control Method Based on Automatic Optimization of Coal Volume in AGC

Abstract

One circulating fluidized bed boiler (CFB) generator set of a thermal power plant in Inner Mongolia power grid planned to put into automatic power generation control (AGC) by transforming the software and hardware of the unit. This can reduce the electricity allocation and punishment by the power grid. In order to overcome the characteristics of large delay and inertia of CFB unit and improve the quality of AGC, a multi-feedforward is added to the boiler master, the prediction section and configuration of coal quantity were designed, and a new objective function was devised to self-optimize the coal quantity. Logic of automatic optimization was made to improve the control indexes of AGC. After the AGC test was finished and AGC was put into operation, the indexes of AGC are excellent, which not only eliminates the AGC power punishment, but also obtains the reward.