PID parameter setting method for monobloc generator group coordination and control system

Abstract

This invention discloses a sort of method of the PID parameter setting of the coordinated control system of the cell-system generating set which belongs to this area of the control technique of the set. This method identifies the multivariable dynamic mathematic model of the unit plant according to the universal structural style. Used the series decoupling principle and the two-degree of freedom control structure the coordinated control system of the unit plant which has the PID form is thought out based this model, thereby the each setting step of the related parameter are get in this system by combining the theoretical derivation and the engineering test. This invention has this character in that the consecution is clear; the practicability is good, and it fits to engineering apply. The engineering technical personnel structures the corresponding coordinated control system expediently, and combines the engineering test aimed at the unit plant of various group, it sets out the related parameter of this system availably.

Description

technical field [0001] The present invention belongs to the technical scope of equipment control, and in particular relates to a PID parameter tuning method for the coordinated control system of a unitary generator set, specifically a design and implementation of a coordinated control system for a unitary unit based on the principle of series decoupling and a two-degree-of-freedom control structure. PID controller parameter tuning method. Background technique [0002] In order to reduce the energy consumption of power generation and improve the utilization efficiency of primary energy, a unit generator set consisting of a boiler and a steam turbine is generally used in the field of electric power production in my country. The energy transfer and conversion in the entire production process is controlled by the boiler system and the steam turbine. System cooperation. However, due to the significant differences in the physical structure, working principle and dynamic characteri...

AI Technical Summary

Problems solved by technology

[0005] 1) The solution is not easy to realize and inconvenient to maintain

The control strategies obtained by using modern control methods are often complex

Although distributed control systems (DCS) have been widely used in large thermal power plants, it is still difficult to implement high-level controllers

In particular, the implementation of anti-saturation measures for high-order controllers is far less convenient than for PID controllers

In addition, due to the complexity of the controller, it is not easy to be accepted by field engineers, and there are great difficulties in system maintenance

[0006] 2) Poor program versatility

[0007] 3) The parameter setting process is cumbersome and the operability is poor

Compared with fixed parameter control, this method has better control performance, but its disadvantages are that the structure of the control system is too complex, the physical meaning of the parameters to be tuned is not clear, and the real-time performance of the parameter optimization process is difficult to guarantee.

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