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A control optimization method using multiple adaptive dynamic feedforward and its control optimization system

A technology of dynamic feedforward and optimization method, which is applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problem of slow adjustment of enthalpy value at the middle point, and achieve the effect of high control precision

Active Publication Date: 2022-07-01
TIANJIN GUONENG JINNENG BINHAI THERMAL POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the enthalpy adjustment at the middle point is relatively slow

Method used

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  • A control optimization method using multiple adaptive dynamic feedforward and its control optimization system
  • A control optimization method using multiple adaptive dynamic feedforward and its control optimization system

Examples

Experimental program
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Effect test

Embodiment 1

[0044] Example 1: In a thermal power plant, the boiler uses the combustion of coal to heat the water in the boiler, and the water in the boiler absorbs heat to form water vapor, which drives the steam turbine to work, and the steam turbine drives the generator to rotate to generate electricity. In addition, the combustion of coal also requires sufficient air, so if you want to change the load of the power grid, what actually needs to be adjusted is the amount of coal, air and water put into the boiler.

[0045] A control optimization method using multiple adaptive dynamic feedforward disclosed in this application can control the coal volume, air volume and water volume input into the boiler respectively, and because the control methods of coal volume, air volume and water volume are the same , but there are differences in specific parameters. Therefore, in this application, only the method for controlling the amount of coal is introduced in detail, see figure 1 , which specif...

Embodiment 2

[0058] Example 2: see figure 2 , a control optimization system applying multi-adaptive dynamic feedforward, including a first detection module 1 , a second detection module 2 , a processing center 3 and an actuator 4 .

[0059] The first detection module 1 includes a remote motor and a data collector. The remote motor is used to overcome the limitation of the distance between the power plant and the substation. The remote motor obtains the load information of the power grid from the substation and transmits it to the data collector in the form of communication data. After analyzing the communication data, it transmits an electrical signal representing the actual load to the processing center 3 .

[0060] The second detection module 2 is a pressure transmitter, which is used to measure the steam pressure in the main steam pipeline and transmit an electrical signal representing the actual value of the main steam pressure to the processing center 3 .

[0061] The processing cen...

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Abstract

The invention relates to a control optimization method applying multiple adaptive dynamic feedforwards, comprising the following steps: step S1, obtaining a target load, and converting the set value of the main steam pressure according to the target load; step S2, detecting an actual load and calculate the first correction amount; step S3, detect the actual value of the main steam pressure, and calculate the second correction amount according to the set value of the main steam pressure and the actual value of the main steam pressure; step S4, calculate the first correction amount The total control amount is obtained by adding the second correction amount; in step S5, the amount of the raw material participating in the combustion of the boiler is adjusted according to the total control amount. When the grid load changes, the control method is used to directly participate in the control of the raw materials of the boiler combustion, and the heat generated by the boiler combustion is changed in the first time, and the heat can be converted into mechanical energy and electrical energy in turn to meet the grid load requirements. Compared with the existing intermediate point control, the response is faster and can meet the fast dynamic response of the boiler.

Description

technical field [0001] The invention relates to the technical field of boiler control, in particular to a control optimization method and a control optimization system using multiple adaptive dynamic feedforward. Background technique [0002] Driven by energy conservation and emission reduction of energy companies around the world, traditional pulverized coal boilers are gradually being phased out. Circulating Fluidized Bed (CFB) boiler technology has a wider range of fuel adaptability and lower air pollution control. It has developed into one of the most successful clean coal combustion technologies in practical use. [0003] At present, my country's CFB units include subcritical parameter units (the rated gauge pressure of the superheater outlet steam is 14-22.2Mpa) and supercritical units (the rated gauge pressure of the superheater outlet steam is 22.2-31Mpa). The power supply efficiency is increased by 2.0% to 2.5%. Among them, subcritical parameter units can use both ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 卢刚方久文左亮杰张凌灿李大辉王斌赵可心任胜利李中典全炳文
Owner TIANJIN GUONENG JINNENG BINHAI THERMAL POWER CO LTD