Method for optimizing and setting regulator parameters of coordinated control system

A technology for coordinating control systems and regulators, applied in general control systems, control/regulation systems, adaptive control, etc., to achieve fast power response speed and ensure stability

Inactive Publication Date: 2011-09-14
SOUTHEAST UNIV
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  • Method for optimizing and setting regulator parameters of coordinated control system
  • Method for optimizing and setting regulator parameters of coordinated control system
  • Method for optimizing and setting regulator parameters of coordinated control system

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[0024] The present invention will be further described below in conjunction with the drawings.

[0025] The unit unit coordinated control system is a 2×2 multivariable system, and the parameter optimization of the proportional integral derivative (PID) regulator is essentially a multi-objective optimization problem. Firstly, the mathematical model of the controlled object for the coordinated control of the unit unit must be obtained, and then according to the characteristics of the boiler follow-up coordinated control system, several optimization targets for the parameter optimization of the proportional integral derivative (PID) regulator are determined. Then through the control system simulation, the multi-objective genetic algorithm is used to optimize the parameters of the proportional integral derivative (PID) regulator to obtain a set of optimized solutions. Finally, a preference decision is made, and a set of parameters is selected as the optimal proportional integral deri...

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Abstract

The invention relates to a method for optimizing and setting regulator parameters of a coordinated control system. The method is characterized by being used for optimizing and setting proportion integration differentiation (PID) regulator parameters from multiple targets of a boiler follow coordinated control system of a generating unit and comprising the following steps of: acquiring a controlled object model of the boiler follow coordinated control system of the generating unit through model identification, namely increasing the quantity of boiler fuel under the condition of unchanged opening of a turbine control valve by steps, and recording the main stream pressure and an output power valve of the generating unit per 5 seconds until the main stream pressure and the output power valve are stable; increasing the opening of the turbine control valve under the condition of unchanged quantity of the boiler fuel by steps, and recording the main stream pressure and the output power valve of the generating unit per 5 seconds. By the method, a closed-loop control system has enough stability, and accumulated heat of a boiler can be fully utilized on the premise of ensuring safe running of the unit so that the unit has a power response speed as fast as possible.

Description

technical field [0001] The invention belongs to the technical field of thermal automatic control, and relates to a multi-objective optimal setting method for proportional-integral-derivative (PID) regulator parameters of a unit unit boiler following coordinated control system. Background technique [0002] The basic task of the coordinated control of the unit unit is to make the unit have as fast a power response as possible under the premise of ensuring the safety of the unit operation. Due to the fast dynamic characteristics of the steam turbine and the slow dynamic characteristics of the boiler, the coordinated control of unit units generally adopts a boiler following coordinated control system composed of a proportional-integral-derivative (PID) regulator, that is, the power is controlled through the turbine adjustment door, and the boiler combustion rate Control the main steam pressure so that the unit has a faster power response characteristic. [0003] The feature of...

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Application Information

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IPC IPC(8): G05B13/04
Inventor 雎刚邱腾飞
Owner SOUTHEAST UNIV
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