Coal quantity optimization prediction control method based on AGC optimization of thermal power plant

A predictive control and thermal power plant technology, applied in the control of combustion, combustion method, adaptive control, etc., can solve problems such as incompleteness, and achieve the effect of reducing workload, improving safety, and fast and stable main steam pressure.

Inactive Publication Date: 2021-01-29
INNER MONGOLIA POWER GRP
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Problems solved by technology

However, the application of this method in DCS is an attempt, and it is still incomplete in many aspects, and still needs to be perfected

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  • Coal quantity optimization prediction control method based on AGC optimization of thermal power plant
  • Coal quantity optimization prediction control method based on AGC optimization of thermal power plant
  • Coal quantity optimization prediction control method based on AGC optimization of thermal power plant

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Embodiment Construction

[0055] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0056] A coal quantity optimization predictive control method based on AGC optimization in a thermal power plant, including a feed-forward plus PID control strategy for the boiler master control in the AGC and CCS control systems, and, in order to improve the response speed and control accuracy of the boiler, also An intelligent feed-forward is added to design the coal quantity prediction link and plan the objective function. Through the DCS configuration programming of the power plant, the parameters can be automatically optimized, so that the feed-forward self-adaptation can be realized, the manual adjustment work can be reduced, and the main steam can be improved. The adjustment quality of pressure, and then improve the adjustment quality of CCS and AGC, such as figure 1 As shown, the intelligent feedforward of the present inventio...

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Abstract

The invention discloses a coal quantity optimization prediction control method based on AGC optimization of a thermal power plant, wherein the method comprises the steps that: a control strategy of feedforward and PID for boiler main control in AGC and CCS control systems is employed, an intelligent feedforward is added, a coal quantity prediction link is designed and an objective function is planned for improving the response speed and control precision of a boiler, and through the DCS configuration programming of the power plant, automatic parameter optimization is realized; when a load instruction changes and a load changes from a current instruction to a target instruction, a large amount of fuel is immediately fed into the boiler under the feedforward action, and the fed fuel amount and the feeding time are related to the deviation between the target load and an actual load instruction, the deviation between a main steam pressure target value and main steam pressure and reset F trigger; therefore, the main control of the unit boiler is realized. Feedforward self-adaption can be achieved, manual adjustment work is reduced, the adjustment quality of main steam pressure can be improved, and then the adjustment quality of CCS and AGC is improved.

Description

technical field [0001] The invention relates to a predictive control method, which belongs to the thermal control automation field of thermal power plants, in particular to a coal quantity optimization predictive control method based on AGC optimization of thermal power plants. Background technique [0002] AGC technical indicators of thermal power units have always been an important manifestation of the automatic control level of thermal power plants, and one of the important indicators for power grid assessment of power plants. Improving AGC control quality is an important means to maintain grid stability after a large number of new energy sources are connected to the grid. Unit CCS (coordinated control system) is the basis of AGC; since thermal power unit boilers have large inertia and lag, how to improve unit CCS and AGC technical indicators is also one of the biggest problems in thermal control technology; with the continuous strengthening of AGC considerations, Each pl...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04F23N1/00
CPCG05B13/042F23N1/002Y02P90/02
Inventor 辛晓钢张国斌郭瑞君党少佳秦成果张谦杜荣华霍红岩周磊赵炜于海存
Owner INNER MONGOLIA POWER GRP
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