GA-SVR-based water island medicine adding on-line control method and device

A control method and water island technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of waste of medicine, low work efficiency, inability to meet the requirements of water effluent standards, and reduce waste and labor. and operating costs, the effect of enhanced interpretation and predictive power

Active Publication Date: 2017-03-15
大唐(北京)水务工程技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above problems, the object of the present invention is to provide a GA-SVR-based online control method and device for dosing in water islands, so as to solve the problems of low work efficiency, waste of medicines and inability to determine the amount of dosing in the current thermal power plant water treatment process. The problem of meeting the water standard requirements

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  • GA-SVR-based water island medicine adding on-line control method and device
  • GA-SVR-based water island medicine adding on-line control method and device
  • GA-SVR-based water island medicine adding on-line control method and device

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Embodiment 1

[0030] refer to figure 1 , shows an embodiment of an online control method for water island dosing based on GA-SVR. This embodiment aims at the obvious hysteresis and constancy of the water treatment and dosing system in thermal power plants, combined with SVR nonlinear time series prediction As well as the characteristics of GA parameter optimization, select the water inflow monitoring indicators and the dosage of the corresponding period when the historical water discharge indicators meet the requirements as samples, use the SVR model for sample training, and apply the GA algorithm to optimize the parameters of the SVR model, and finally get the water island The drug dosing model is used to realize intelligent dynamic real-time drug dosing. The method of this embodiment specifically includes the following steps S102 to S112.

[0031] Step S102: Obtain m groups of historical parameter values ​​of incoming water monitoring indicators whose outlet water indicators meet the requ...

Embodiment 2

[0044] This embodiment has shown a kind of preferred embodiment on the basis of above-mentioned embodiment one, the online control method of water island dosing based on GA-SVR provided in this embodiment is specifically described as follows:

[0045] Step 1. Obtain the digital signals of m groups of historical inflow monitoring indicators whose effluent indicators meet the requirements and the corresponding dosing amount of the dosing agent, and determine the input variables and output variables of the GA-SVR dosing model of the digital water island. Among them, the sample The number is m, the number of samples in the training set is n, and the number of samples in the test set is m-n. Among them, the incoming water monitoring indicators include incoming water flow rate, pH value, turbidity value, chloride ion content and ammonia nitrogen content, and the types of additives include sulfuric acid, sodium hydroxide, bactericide, coagulant aid, coagulant or reducing agent, etc. ...

Embodiment 3

[0070] like Figure 10 As shown, this embodiment provides a GA-SVR-based online control device for water island dosing, the control device is applied in the water treatment system of a thermal power plant, and specifically includes a historical data acquisition module 10, a model building module 20, a parameter An optimization module 30 , a real-time monitoring module 40 and a dosage control module 50 .

[0071] Among them, the historical data acquisition module 10 is used to obtain m groups of historical parameter values ​​of the incoming water monitoring index that meet the requirements of the water outlet index, and the historical dosing amount of the dosing agent corresponding to each group of historical parameter values; the model building module 20 is used for Establish an online control SVR model based on the support vector regression machine, wherein the historical parameter value is the input vector of the SVR model, and the historical dosage is the output vector of t...

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Abstract

The invention discloses a GA-SVR-based water island medicine adding on-line control method and device. The method comprises the following steps: m groups of historic parameter values of incoming water monitoring indexes in a time period when outgoing water parameters satisfy requirements are obtained, historic medicine addition quantities of added medicament corresponding to all groups of historic parameter values are obtained, an on-line control SVR model is built based on a support vector regression machine, the historic parameter values are input vectors for the SVR model, the historic medicine addition quantities are output vectors for the SVR model, the SVR model is subjected to GA algorithm operation, optimal solutions for parameters in the SVR model are obtained, the obtained optimal solutions are input into the SVR model, a medicine adding model for a water island is obtained, real time parameter values of the incoming water monitoring parameters are monitored in real time, the real time parameter values are input into the medicine adding model for the water island, and therefore a medicine addition quantity of the added medicament for current time is determined. Via the method disclosed in the invention, influence exerted on operation processes by water quality of incoming water can be overcome, the medicine addition quantity can be updated in real time, medicament waste can be reduced, and cost can be lowered.

Description

technical field [0001] The invention belongs to the technical field of water treatment in thermal power plants, and in particular relates to a GA-SVR-based online control method and device for dosing in water islands, which can be used to automatically control the dosing amount. Background technique [0002] A thermal power plant, referred to as a thermal power plant, is a factory that uses coal, oil, and natural gas as fuel to produce electric energy. Its basic production process is: the fuel is burned in a boiler to heat water to generate steam, and the chemical energy of the fuel is converted into heat energy, and then the steam The pressure pushes the steam turbine to rotate, converting thermal energy into mechanical energy, and finally the steam turbine drives the generator to rotate, converting the mechanical energy into electrical energy. [0003] In modern thermal power plants, the water treatment process is a complex physical and chemical reaction process, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张鹏远秦栋张磊
Owner 大唐(北京)水务工程技术有限公司
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