A Steam Turbine Regulation System and Method Introducing Overshoot Peak Correction

Abstract

The embodiment of the present invention provides a steam turbine regulation system and method that introduces overshoot peak correction. The embodiment of the present invention adds an overshoot peak correction module and / or initial The step delay module is used to eliminate the influence of the generator side on the model parameters of the steam turbine regulating system and the influence of the volume delay of the steam chamber in front of the high-pressure cylinder on the quality parameters, so that the power model curve after parameter identification is more accurate than the actual load, and can make the The quality parameters are up to standard. The embodiment of the present invention also adopts the improved PSO intelligent optimization algorithm, so that the calculation precision is more accurate and the adaptability to the model is wider.

Description

technical field [0001] The invention relates to the modeling of a steam turbine regulating system, in particular to a steam turbine regulating system and a method for introducing overshoot wave peak correction. Background technique [0002] The existing control system model of the primary intermediate reheat condensing steam turbine is as follows: figure 1 As shown, there are mainly the following parameters: the steam volume time constant T CH , the reheater time constant T RH , the cross tube time constant T CO , high pressure cylinder power ratio F HP , the power ratio of the medium pressure cylinder F IP , low pressure cylinder power ratio F LP , the natural overshoot coefficient λ of the high-pressure cylinder power. P GV represents the steam entering the turbine, P M Indicates the turbine power. [0003] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: [0004] At present, mo...

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Problems solved by technology

[0004] At present, most of the simulation curves generated by the traditional steam turbine regulation system parameter automatic identification and simulation verification software have a certain degree of distortion, especially the simulation curves of the power under frequency disturbance mostly do not have the overshoot peak in the measured curve, but this is just It is an important index that needs to be considered in the calculation of power grid stability, and is an important quality parameter (the maximum output increment of the high-pressure cylinder of the steam turbine). The reason for the impact is mainly due to the complexity of the generator model and the excitation system model, and it is very difficult to establish related models in the identification software

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