CN117215255B

CN117215255B - Automatic energy-saving consumption-reducing operation control system of industrial circulating water system

Info

Publication number: CN117215255B
Application number: CN202311486166.4A
Authority: CN
Inventors: 吴坚; 李达; 周丁琳; 张悍; 吴玉成; 何中炜; 陈艳艳
Original assignee: Zhongkong Technology Co ltd
Current assignee: Zhongkong Technology Co ltd
Priority date: 2023-11-09
Filing date: 2023-11-09
Publication date: 2024-01-26
Anticipated expiration: 2043-11-09
Also published as: CN117215255A

Abstract

The invention relates to an automatic energy-saving consumption-reducing operation control system of an industrial circulating water system, which comprises: the data acquisition module is used for acquiring the operation data of the industrial circulating water system according to the preset frequency; the data processing module is used for preprocessing operation data acquired at any time to acquire preprocessed operation data corresponding to the acquisition time; the optimization algorithm module is used for acquiring operation control parameters of the first equipment based on the preprocessed operation data corresponding to the acquisition time, the optimal water supply temperature interval of the circulating water and the optimal water supply pressure interval of the circulating water; the data parameter outputting module is used for converting the operation control parameters of the first equipment into data types to obtain converted operation control parameters; the control signal issuing module is used for converting the converted operation control parameters into corresponding control signals and issuing the control signals to corresponding first equipment in the industrial circulating water system.

Description

Automatic energy-saving consumption-reducing operation control system of industrial circulating water system

Technical Field

The invention relates to the technical field of automatic control, in particular to an automatic energy-saving consumption-reducing operation control system of an industrial circulating water system.

Background

Industrial circulating water systems are widely used in various fields, such as manufacturing, energy industries, etc., and in most industrial processes, circulating water systems play a vital role for cooling equipment, cooling materials or as a transport medium. The industrial circulating water system mainly comprises a cooling tower, a circulating water pump, a circulating water tank and various instrument valves, wherein the cooling tower fan and the circulating water pump are used as power consumers of the industrial circulating water system, and the power consumption of the industrial circulating water system accounts for more than 95% of the energy consumption of the whole industrial circulating water system. In the current industrial circulating water system, because the structure is relatively simple, many production enterprises tend to change the operation condition of the circulating water system by adopting a manual regulation and control mode, the regulation and control mode often depends on experience and intuition of operators, manual intervention and adjustment are required to be periodically carried out, the problems of strong subjectivity, low response speed, high requirement on experience and the like exist, and energy waste and low efficiency are easily caused. In addition, because the cooperative action and the complex running state among all components cannot be fully considered in artificial regulation and control, the whole system cannot be fully optimized, and the potential energy-saving and consumption-reducing space is difficult to fully develop and utilize.

In addition, in the control method capable of automatically reducing the energy consumption of the industrial circulating water system in the prior art, only the energy consumption of the circulating water pump is saved and optimally regulated, but the energy saving regulation of a cooling tower fan is ignored, the energy saving potential of the whole circulating water system is not fully exerted, and a certain gap exists between the energy saving potential and the real optimal control.

Disclosure of Invention

In view of the above-mentioned shortcomings and disadvantages of the prior art, the invention provides an automatic energy-saving and consumption-reducing operation control system of an industrial circulating water system, which solves the technical problems that the whole system cannot be fully optimized in the prior art, so that the potential energy-saving and consumption-reducing space is difficult to fully develop and utilize, only the energy consumption of a circulating water pump is saved and optimally regulated, but the energy-saving regulation of a cooling tower fan is ignored, and the energy-saving potential of the whole circulating water system is not fully exerted.

In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps:

the embodiment of the invention provides an automatic energy-saving consumption-reducing operation control system of an industrial circulating water system, which comprises the following components:

the data acquisition module is used for acquiring the operation data of the industrial circulating water system according to the preset frequency and storing the operation data acquired each time into the database;

The data processing module is used for preprocessing operation data acquired at any time to acquire preprocessed operation data corresponding to the acquisition time;

the optimization algorithm module is used for acquiring operation control parameters of first equipment in the industrial circulating water system based on the preprocessed operation data corresponding to the acquisition time and the circulating water optimal water supply temperature interval and the circulating water optimal water supply pressure interval which are acquired in advance and correspond to the acquisition time;

the first device includes: one or more of a power frequency fan, a variable frequency fan, a power frequency water pump and a variable frequency water pump;

the data parameter outputting module is used for converting the data type of the operation control parameters of the first equipment in the industrial circulating water system to obtain converted operation control parameters;

the control signal issuing module is used for converting the converted operation control parameters into corresponding control signals and issuing the control signals to corresponding first equipment in the industrial circulating water system.

Preferably, the method comprises the steps of,

wherein, the operation data of the industrial circulating water system comprises: system operation data and device operation data, device bit data;

The system operation data includes: the water supply temperature of the circulating water, the backwater temperature of the circulating water, the water flow rate of the circulating water, the water supply pressure of the circulating water and the backwater pressure of the circulating water;

the device operation data includes: the system comprises a first state parameter for identifying the remote control state of the power frequency fan, a first alarm signal parameter for identifying whether the power frequency fan is damaged or not, and a first start-stop signal parameter for identifying whether the power frequency fan is started or not; and/or a second state parameter for identifying the remote control state of the variable frequency fan, a second alarm signal parameter for identifying whether the variable frequency fan is damaged, a second start-stop signal parameter for identifying whether the variable frequency fan is started, and a frequency value of the variable frequency fan; and/or a third state parameter for identifying the remote control state of the power frequency water pump, a third alarm signal parameter for identifying whether the power frequency water pump is damaged, and a third start-stop signal parameter for identifying whether the power frequency water pump is started or not; and/or a fourth state parameter for identifying the remote control state of the variable-frequency water pump, a fourth alarm signal parameter for identifying whether the variable-frequency water pump is damaged, a fourth start-stop signal parameter for identifying whether the variable-frequency water pump is started, and a frequency value of the variable-frequency water pump;

The device bit number data includes: power for each of the first devices.

Preferably, the data processing module performs preprocessing on any collected operation data to obtain preprocessed operation data corresponding to the time of collection, and specifically includes:

the data processing module is used for carrying out abnormal value processing and missing value processing on any acquired operation data to obtain preprocessed operation data corresponding to the acquisition time;

wherein the outlier handling includes: the data processing module judges whether any parameter in the AI data in the collected operation data exceeds a preset range corresponding to the parameter, and if so, the data processing module replaces the AI data with a first average corresponding to the parameter;

wherein, parameters in the AI data include: the water supply temperature of the circulating water, the return water temperature of the circulating water, the flow rate of the circulating water, the water supply pressure of the circulating water, the return water pressure of the circulating water, the frequency value of the variable-frequency fan and the frequency value of the variable-frequency water pump;

wherein the first average corresponding to the parameter is: the average number of the parameters in the operation data acquired in the first 15 minutes of the acquisition time corresponding to the operation data acquired in the time;

The data processing module judges whether any parameter in DI type data in the collected operation data exceeds a preset range corresponding to the parameter, if so, the data processing module replaces the numerical value of the parameter in the operation data collected in the previous collection time adjacent to the collection time corresponding to the collected operation data;

wherein, parameters in the DI class data include: the system comprises a first state parameter, a first alarm signal parameter, a first start-stop signal parameter, a second state parameter, a second alarm signal parameter, a second start-stop signal parameter, a third state parameter, a third alarm signal parameter, a third start-stop signal parameter, a fourth state parameter, a fourth alarm signal parameter and a fourth start-stop signal parameter;

wherein the missing value processing includes: the data processing module judges whether any parameter in the AI data of the collected operation data is missing, and if the parameter is missing, a first average corresponding to the parameter is adopted for filling;

the data processing module judges whether any parameter in DI data of the collected operation data is missing, and if the parameter is missing, the value of the parameter in the operation data collected in the previous collection time adjacent to the collection time corresponding to the collected operation data is adopted for filling.

Preferably, the optimization algorithm module obtains operation control parameters of the first equipment in the industrial circulating water system, and specifically includes:

screening out first type equipment based on the preprocessed operation data corresponding to the collecting time;

the first type of device comprises: a power frequency fan meeting the first screening condition, a variable frequency fan meeting the second screening condition, a power frequency water pump meeting the third screening condition and a variable frequency water pump meeting the fourth screening condition;

the first screening conditions were: the first state parameter is a numerical value for identifying that the remote control state of the power frequency fan is normal, and the first alarm signal parameter is a numerical value for identifying that the power frequency fan is not damaged; the second screening conditions were: the second state parameter is a numerical value for identifying that the remote control state of the variable frequency fan is normal, and the second alarm signal parameter is a numerical value for identifying that the variable frequency fan is not damaged; the third screening conditions were: the third state parameter is a numerical value for identifying that the remote control state of the power frequency water pump is normal, and the third alarm signal parameter is a numerical value for identifying that the power frequency water pump is not damaged; the fourth screening conditions were: the fourth state parameter is a numerical value for identifying that the remote control state of the variable-frequency water pump is normal, and the fourth alarm signal parameter is a numerical value for identifying that the variable-frequency water pump is not damaged;

Acquiring operation control parameters of fans in the industrial circulating water system based on the preprocessed operation data respectively corresponding to the next acquisition time and N adjacent acquisition times before the next acquisition time, first type equipment and a pre-acquired circulating water optimal water supply temperature interval corresponding to the next acquisition time;

and acquiring operation control parameters of a water pump in the industrial circulating water system based on the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time, the first type equipment and the pre-acquired circulating water optimal water supply pressure interval corresponding to the next acquisition time.

Preferably, the specific mode for obtaining the operation control parameters of the fans in the industrial circulating water system comprises the following steps:

if the water supply temperature of the circulating water in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is lower than the minimum value of the optimal water supply temperature interval of the circulating water corresponding to the next acquisition time, judging whether a first type fan exists in the first type equipment or not, and obtaining a first judgment result; the first type fan is a power frequency fan with power larger than a first preset value; if the first judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the first type fans as a numerical value for marking the closing of the power frequency fan and taking the numerical value as a first type operation control parameter; if the first judging result is not the same, judging whether the first type equipment has the second type fan or not, and obtaining a second judging result; the second type fan is a power frequency fan with power smaller than or equal to a first preset value; if the second judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the second type fan as a numerical value for marking the power frequency fan to be closed, and taking the numerical value as a first type of operation control parameter; if the second judging result is not the same, judging whether the variable frequency fan exists in the first type of equipment, and obtaining a third judging result; if the third judging result is yes, reducing the frequency value of any variable frequency fan by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter;

If the circulating water supply temperature in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is within the optimal circulating water supply temperature interval corresponding to the next acquisition time, judging whether a variable frequency fan exists in the first type of equipment, and obtaining a fourth judgment result; if the fourth judging result is yes, reducing the frequency value of any variable frequency fan by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter; if the fourth judging result is not yes, judging whether the second type fan exists in the first type equipment or not, and obtaining a fifth judging result; if the fifth judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the second type fan as a numerical value for marking the power frequency fan to be closed, and taking the numerical value as a first type of operation control parameter;

if the circulating water supply temperature in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is greater than the maximum value of the circulating water optimal supply temperature interval corresponding to the next acquisition time, judging whether a variable frequency fan exists in the first type of equipment, and obtaining a sixth judgment result; if the sixth judging result is yes, the frequency value of any variable frequency fan in the first type of equipment is increased by a first preset hertz and then is used as a second type of operation control parameter; if the sixth judgment result is not the same, judging whether the second type fan exists in the second type equipment or not, and obtaining a seventh judgment result; the second type of device is: a power frequency fan, a variable frequency fan, a power frequency water pump and a variable frequency water pump which are arranged in the industrial circulating water system and are arranged outside the first type of equipment; if the seventh judging result is yes, setting a first start-stop signal parameter of any one second type fan which accords with a preset first start condition in the second type equipment as a numerical value for marking the start of the fan, and taking the numerical value as a first type operation control parameter; if the seventh judgment result is not the same, judging whether the first type fan exists in the second type equipment or not, and obtaining an eighth judgment result; if the eighth judging result is yes, setting a first start-stop signal parameter of any one first type fan meeting the preset first start condition in the second type equipment as a numerical value for marking the start of the fan, and taking the numerical value as a first type operation control parameter.

Preferably, the specific mode for obtaining the operation control parameters of the water pump in the industrial circulating water system comprises the following steps:

if the circulating water supply pressure in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is lower than the minimum value of the circulating water optimal water supply pressure interval corresponding to the next acquisition time, judging whether a first type water pump exists in the first type equipment or not, and obtaining a ninth judgment result; the first type water pump is a power frequency water pump with power larger than a first preset value; if the ninth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the first type water pump as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as a first type operation control parameter; if the ninth judgment result is not the same, judging whether the second type water pump exists in the first type equipment or not, and obtaining a tenth judgment result; the second type water pump is a power frequency water pump with the power less than or equal to a first preset value; if the tenth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the second type water pump as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as a first type of operation control parameter; if the tenth judgment result is not yes, judging whether the variable-frequency water pump exists in the first type of equipment, and obtaining an eleventh judgment result; if the eleventh judgment result is yes, reducing the frequency value of any variable-frequency water pump by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter;

If the circulating water supply pressure in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is in the circulating water optimal supply pressure interval corresponding to the next acquisition time, judging whether a variable-frequency water pump exists in the first type of equipment, and obtaining a twelfth judgment result; if the twelfth judgment result is yes, reducing the frequency value of any variable-frequency water pump by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter; if the twelfth judgment result is not found, judging whether the second type water pump exists in the first type equipment or not, and obtaining a thirteenth judgment result; if the thirteenth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the second type fan as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as a first type of operation control parameter;

if the circulating water supply pressure in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is larger than the maximum value of the circulating water optimal water supply pressure interval corresponding to the next acquisition time, judging whether a variable-frequency water pump exists in the first type of equipment, and obtaining a fourteenth judgment result; if the fourteenth judging result is yes, the frequency of any variable-frequency water pump in the first type of equipment is increased by a first preset hertz and then is used as a second type of operation control parameter; if the fourteenth judging result is not the same, judging whether the second type water pump exists in the second type equipment or not, and obtaining a fifteenth judging result; if the fifteenth judging result is yes, setting a third start-stop signal parameter of any one of the second type water pumps in the second type equipment, which accords with a preset second start condition, as a numerical value for marking the start of the water pump, and taking the numerical value as a first type of operation control parameter; if the fifteenth judging result is not the same, judging whether the first type water pump exists in the second type equipment or not, and obtaining a sixteenth judging result; if the sixteenth judging result is yes, setting a third start-stop signal parameter of any one of the first type water pumps in the second type equipment, which accords with the preset second start condition, as a numerical value for marking the start of the water pump, and taking the numerical value as a first type operation control parameter.

Preferably, the method comprises the steps of,

the first opening condition is: the values of start-stop signal parameters corresponding to fans in the preprocessed operation data corresponding to the adjacent M times of acquisition time before the acquisition time are all values for marking the closing of the fans;

the second opening condition is: the values of the start-stop signal parameters corresponding to the water pump in the preprocessed operation data corresponding to the adjacent M times of acquisition time before the acquisition time are all values for marking the water pump to be closed.

Preferably, the method comprises the steps of,

the optimal water supply temperature interval of the circulating water corresponding to the time of the collection is obtained in advance through a first mode;

the first mode includes:

acquiring the tail end heat exchange amount corresponding to the acquisition time by adopting a formula (1) according to the water supply temperature of the circulating water, the backwater temperature of the circulating water and the circulating water flow in the preprocessed operation data respectively corresponding to any acquisition time in the first historical time period;

the first historical time period is a first time period before the acquisition time;

the first period of time is 3 months to 6 months;

the formula (1) is:

；

Qheat exchange amount for the tail end;Cis the specific heat capacity of water;Vis the circulating water flow;ρis the density of water; t (T) ₁ The temperature of the water supply for the circulating water; t (T) ₂ The temperature of the return water of the circulating water;

carrying out correlation regression analysis on the water supply temperature and the tail end heat exchange amount of the circulating water corresponding to all the acquisition moments in the first historical time period respectively to obtain a first regression equation corresponding to the water supply temperature and the tail end heat exchange amount of the circulating water;

substituting a specific value of the circulating water supply temperature in the operation data acquired at any acquisition time in the second historical time period into the first regression equation, and calculating to obtain a specific value of the terminal heat exchange amount corresponding to the acquisition time in the second historical time period;

the first historical time period is a second time period before the acquisition time;

the second period of time is 4 days to 7 days;

and taking the range between the specific values of the optimal water supply temperature of the circulating water, which correspond to the minimum value and the maximum value in the specific values of the heat exchange quantity of the tail end corresponding to all the acquisition time in the second historical time period, as the optimal water supply temperature interval of the circulating water.

Preferably, the method comprises the steps of,

wherein, the optimal water supply pressure interval of the circulating water corresponding to the time of the collection is obtained in advance through a second mode;

the second mode includes:

the first period of time is 3 months to 6 months;

the formula (1) is:

；

carrying out correlation regression analysis on the circulating water supply pressure and the tail end heat exchange quantity respectively corresponding to all the acquisition moments in the first historical time period to obtain a second regression equation corresponding to the circulating water supply pressure and the tail end heat exchange quantity;

substituting a specific value of the circulating water supply pressure in the operation data acquired at any acquisition time in the second historical time period into the second regression equation, and calculating to obtain a specific value of the terminal heat exchange amount corresponding to the acquisition time in the second historical time period;

the second period of time is 4 days to 7 days;

and taking the range between the circulating water supply pressure corresponding to the minimum value and the maximum value in the specific values of the tail end heat exchange quantity corresponding to all the acquisition moments in the second historical time period as the circulating water optimal supply pressure interval.

Preferably, the method comprises the steps of,

the data type conversion processing specifically comprises the following steps: the second type of operation control parameters are converted into floating point type data, and the first type of operation control parameters are converted into Boolean type data.

The beneficial effects of the invention are as follows: according to the automatic energy-saving consumption-reducing operation control system of the industrial circulating water system, the optimization algorithm module is adopted, so that the operation control parameters of the first equipment in the industrial circulating water system are obtained based on the preprocessed operation data corresponding to the acquisition time and the pre-obtained optimal water supply temperature interval and the pre-obtained optimal water supply pressure interval of the circulating water corresponding to the acquisition time. In the process of obtaining the operation control parameters of the first equipment, the optimization algorithm module considers various factors such as the water supply temperature of the circulating water, the return water temperature of the circulating water, the flow rate of the circulating water, the water supply pressure of the circulating water, the return water pressure of the circulating water and the like, so that the obtained operation control parameters of the first equipment in the industrial circulating water system can enable the industrial circulating water system to operate in a lower energy consumption state. And the data parameter outputting module is used for carrying out data type conversion treatment on the operation control parameters of the first equipment in the industrial circulating water system to obtain converted operation control parameters. The control signal issuing module is used for converting the converted operation control parameters into corresponding control signals and issuing the control signals to corresponding first equipment in the industrial circulating water system. Compared with the prior art, the automatic energy-saving consumption-reducing operation control system for the industrial circulating water system can realize automatic collaborative work, effectively combines the operation control parameters obtained by the data acquisition module, the processing analysis of the data processing module and the optimization algorithm module, and forms closed-loop control by the data parameter output module and the control signal issuing module.

Drawings

FIG. 1 is an automated energy-saving and consumption-reducing operation control system of an industrial circulating water system of the present invention;

fig. 2 is a schematic structural diagram of an automatic energy-saving and consumption-reducing operation control system of an industrial circulating water system in the embodiment when optimizing the circulating water system of a certain food production enterprise;

FIG. 3 is a process flow diagram of a circulating water system of a food manufacturing enterprise according to the embodiment;

fig. 4 is a schematic diagram showing comparison of the power consumption of a fan, the power consumption of a circulating water pump and the total power consumption of the system 30 days before and 30 days after optimization of a circulating water system of a certain food production enterprise in this embodiment.

Detailed Description

The invention will be better explained by the following detailed description of the embodiments with reference to the drawings.

In order that the above-described aspects may be better understood, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

Referring to fig. 1, the embodiment provides an automatic energy-saving and consumption-reducing operation control system of an industrial circulating water system, which comprises:

the data acquisition module is used for acquiring the operation data of the industrial circulating water system according to the preset frequency and storing the operation data acquired each time into the database.

Wherein, the operation data of the industrial circulating water system comprises: system operation data and device operation data, device bit data.

The system operation data includes: the water supply temperature of the circulating water, the backwater temperature of the circulating water, the circulating water flow rate, the water supply pressure of the circulating water and the backwater pressure of the circulating water.

The device operation data includes: the system comprises a first state parameter for identifying the remote control state of the power frequency fan, a first alarm signal parameter for identifying whether the power frequency fan is damaged or not, and a first start-stop signal parameter for identifying whether the power frequency fan is started or not; and/or a second state parameter for identifying the remote control state of the variable frequency fan, a second alarm signal parameter for identifying whether the variable frequency fan is damaged, a second start-stop signal parameter for identifying whether the variable frequency fan is started, and a frequency value of the variable frequency fan; and/or a third state parameter for identifying the remote control state of the power frequency water pump, a third alarm signal parameter for identifying whether the power frequency water pump is damaged, and a third start-stop signal parameter for identifying whether the power frequency water pump is started or not; and/or a fourth state parameter for identifying the remote control state of the variable-frequency water pump, a fourth alarm signal parameter for identifying whether the variable-frequency water pump is damaged, a fourth start-stop signal parameter for identifying whether the variable-frequency water pump is started, and a frequency value of the variable-frequency water pump.

For example, if the first state parameter for identifying the remote control state of the power frequency fan is equal to 0, the remote control state of the power frequency fan is identified as abnormal; and if the first state parameter is equal to 1, marking that the remote control state of the power frequency fan is normal.

If the first alarm signal parameter used for identifying whether the power frequency fan is damaged is equal to 0, the power frequency fan is identified to be damaged; and if the first alarm signal parameter is equal to 1, marking that the power frequency fan is not damaged.

If the first start-stop signal parameter used for identifying whether the power frequency fan is started is equal to 0, the power frequency fan is identified to be closed; and if the first start-stop signal parameter is equal to 1, the start of the power frequency fan is marked.

The device bit number data includes: power for each of the first devices. Specifically, the device bit number data includes: the power of the power frequency fan, the power of the variable frequency fan, the power of the power frequency water pump and the power of the variable frequency water pump.

The data processing module is used for preprocessing any acquired operation data to acquire preprocessed operation data corresponding to the acquisition time.

In this embodiment, the data processing module performs preprocessing on the operation data collected at any time, and obtains preprocessed operation data corresponding to the time of collection, which specifically includes:

The data processing module is used for carrying out abnormal value processing and missing value processing on any acquired operation data to obtain preprocessed operation data corresponding to the acquisition time.

Wherein the outlier handling includes: the data processing module judges whether any parameter in the AI data in the collected operation data exceeds a preset range corresponding to the parameter, and if so, the data processing module replaces the AI data with a first average corresponding to the parameter.

Wherein, parameters in the AI data include: the water supply temperature of the circulating water, the return water temperature of the circulating water, the flow rate of the circulating water, the water supply pressure of the circulating water, the return water pressure of the circulating water, the frequency value of the variable-frequency fan and the frequency value of the variable-frequency water pump.

Wherein the first average corresponding to the parameter is: the average of the parameters in the operation data acquired in the first 15 minutes of the acquisition time corresponding to the operation data acquired in the time.

The data processing module judges whether any parameter in DI type data in the collected operation data exceeds a preset range corresponding to the parameter, and if so, the data processing module replaces the numerical value of the parameter in the operation data collected in the previous collection time adjacent to the collection time corresponding to the collected operation data.

Wherein, parameters in the DI class data include: the system comprises a first state parameter, a first alarm signal parameter, a first start-stop signal parameter, a second state parameter, a second alarm signal parameter, a second start-stop signal parameter, a third state parameter, a third alarm signal parameter, a third start-stop signal parameter, a fourth state parameter, a fourth alarm signal parameter and a fourth start-stop signal parameter.

Wherein the missing value processing includes: the data processing module judges whether any parameter in the AI data of the collected operation data is missing, and if the parameter is missing, the first average number corresponding to the parameter is adopted for filling.

The first device includes: one or more of a power frequency fan, a variable frequency fan, a power frequency water pump and a variable frequency water pump.

In this embodiment, the optimization algorithm module obtains an operation control parameter for a first device in the industrial circulating water system, and specifically includes:

and screening out the first type of equipment based on the preprocessed operation data corresponding to the acquisition time.

The first type of device comprises: the variable frequency fan meeting the first screening condition, the variable frequency fan meeting the second screening condition, the power frequency water pump meeting the third screening condition and the variable frequency water pump meeting the fourth screening condition.

The first screening conditions were: the first state parameter is a numerical value for identifying that the remote control state of the power frequency fan is normal, and the first alarm signal parameter is a numerical value for identifying that the power frequency fan is not damaged; the second screening conditions were: the second state parameter is a numerical value for identifying that the remote control state of the variable frequency fan is normal, and the second alarm signal parameter is a numerical value for identifying that the variable frequency fan is not damaged; the third screening conditions were: the third state parameter is a numerical value for identifying that the remote control state of the power frequency water pump is normal, and the third alarm signal parameter is a numerical value for identifying that the power frequency water pump is not damaged; the fourth screening conditions were: the fourth state parameter is a value for identifying that the remote control state of the variable-frequency water pump is normal, and the fourth alarm signal parameter is a value for identifying that the variable-frequency water pump is not damaged.

And acquiring operation control parameters of fans in the industrial circulating water system based on the preprocessed operation data respectively corresponding to the next acquisition time and N adjacent acquisition times before the next acquisition time, the first type equipment and the pre-acquired optimal water supply temperature interval of the circulating water corresponding to the next acquisition time.

The data parameter outputting module is used for converting the data type of the operation control parameters of the first equipment in the industrial circulating water system to obtain converted operation control parameters.

In practical application of the embodiment, a specific method for obtaining operation control parameters of a fan in an industrial circulating water system includes:

If the water supply temperature of the circulating water in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is lower than the minimum value of the optimal water supply temperature interval of the circulating water corresponding to the next acquisition time, judging whether a first type fan exists in the first type equipment or not, and obtaining a first judgment result; the first type fan is a power frequency fan with power larger than a first preset value; if the first judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the first type fans as a numerical value for marking the closing of the power frequency fan and taking the numerical value as a first type operation control parameter; if the first judging result is not the same, judging whether the first type equipment has the second type fan or not, and obtaining a second judging result; the second type fan is a power frequency fan with power smaller than or equal to a first preset value; if the second judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the second type fan as a numerical value for marking the power frequency fan to be closed, and taking the numerical value as a first type of operation control parameter; if the second judging result is not the same, judging whether the variable frequency fan exists in the first type of equipment, and obtaining a third judging result; if the third judging result is yes, reducing the frequency value of any variable frequency fan by a first preset hertz, and then taking the reduced frequency value as a second type of operation control parameter.

In a specific application of the embodiment, N is equal to 4, that is, if the water supply temperature of the circulating water in the preprocessed operation data corresponding to the next collection time and the adjacent 4 collection times before the next collection time are both lower than the minimum value of the optimal water supply temperature interval of the circulating water corresponding to the next collection time, judging whether the first type fan exists in the first type device, and obtaining a first judgment result; the first type fan is a power frequency fan with power larger than a first preset value; if the first judging result is yes, setting a first start-stop signal parameter of any power frequency fan in the first type fan as a value for identifying the power frequency fan to be closed (namely, setting the first start-stop signal parameter of any power frequency fan in the first type fan as 0), and taking the first start-stop signal parameter as an operation control parameter of the first type; if the first judging result is not the same, judging whether the first type equipment has the second type fan or not, and obtaining a second judging result; the second type fan is a power frequency fan with power smaller than or equal to a first preset value; if the second judging result is yes, setting the first start-stop signal parameter of any power frequency fan in the second type fan as a value for identifying the power frequency fan to be closed (namely, setting the first start-stop signal parameter of any power frequency fan in the second type fan as 0), and taking the first start-stop signal parameter as the first type of operation control parameter; if the second judging result is not the same, judging whether the variable frequency fan exists in the first type of equipment, and obtaining a third judging result; if the third judging result is yes, reducing the frequency value of any variable frequency fan by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter; the first preset hertz in this embodiment is 2 hertz.

If the circulating water supply temperature in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is within the optimal circulating water supply temperature interval corresponding to the next acquisition time, judging whether a variable frequency fan exists in the first type of equipment, and obtaining a fourth judgment result; if the fourth judging result is yes, reducing the frequency value of any variable frequency fan by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter; if the fourth judging result is not yes, judging whether the second type fan exists in the first type equipment or not, and obtaining a fifth judging result; if the fifth judging result is yes, the first start-stop signal parameter of any power frequency fan in the second type fan is set to be a numerical value for marking the power frequency fan to be closed, and the numerical value is used as the first type operation control parameter.

Specifically, the first starting condition is that the values of start-stop signal parameters corresponding to the fans in the preprocessed operation data corresponding to the adjacent M times of acquisition time before the acquisition time are all values for marking the closing of the fans; in this embodiment, M is 30, that is, the first opening condition is that the values of the start-stop signal parameters corresponding to the fans in the preprocessed operation data corresponding to the adjacent 30 times of collection time before the collection time are all the values for identifying the closing of the fans.

In practical application of the embodiment, a specific method for obtaining an operation control parameter of a water pump in an industrial circulating water system includes:

if the circulating water supply pressure in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is lower than the minimum value of the circulating water optimal water supply pressure interval corresponding to the next acquisition time, judging whether a first type water pump exists in the first type equipment or not, and obtaining a ninth judgment result; the first type water pump is a power frequency water pump with power larger than a first preset value; if the ninth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the first type water pump as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as a first type operation control parameter; if the ninth judgment result is not the same, judging whether the second type water pump exists in the first type equipment or not, and obtaining a tenth judgment result; the second type water pump is a power frequency water pump with the power less than or equal to a first preset value; if the tenth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the second type water pump as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as a first type of operation control parameter; if the tenth judgment result is not yes, judging whether the variable-frequency water pump exists in the first type of equipment, and obtaining an eleventh judgment result; if the eleventh judgment result is yes, the frequency value of any variable-frequency water pump is reduced by a first preset hertz and then is used as the second type of operation control parameter.

If the circulating water supply pressure in the preprocessed operation data respectively corresponding to the next acquisition time and the adjacent N acquisition times before the next acquisition time is in the circulating water optimal supply pressure interval corresponding to the next acquisition time, judging whether a variable-frequency water pump exists in the first type of equipment, and obtaining a twelfth judgment result; if the twelfth judgment result is yes, reducing the frequency value of any variable-frequency water pump by a first preset hertz, and taking the reduced frequency value as a second type of operation control parameter; if the twelfth judgment result is not found, judging whether the second type water pump exists in the first type equipment or not, and obtaining a thirteenth judgment result; if the thirteenth judging result is yes, setting a third start-stop signal parameter of any power frequency water pump in the second type fan as a numerical value for marking the power frequency water pump to be closed, and taking the numerical value as the first type operation control parameter.

Specifically, the second opening condition is: the values of the start-stop signal parameters corresponding to the water pump in the preprocessed operation data corresponding to the adjacent M times of acquisition time before the acquisition time are all values for marking the water pump to be closed. In this embodiment, M is 30, that is, the first opening condition is that the values of the start-stop signal parameters corresponding to the fans in the preprocessed operation data corresponding to the adjacent 30 times of collection time before the collection time are all the values for identifying the closing of the fans.

In this embodiment, the optimal water supply temperature range of the circulating water corresponding to the time of the collection is obtained in advance by the first method.

The first mode includes:

and (3) acquiring the corresponding tail end heat exchange amount at the acquisition time by adopting a formula (1) according to the water supply temperature of the circulating water, the backwater temperature of the circulating water and the circulating water flow in the preprocessed operation data corresponding to any acquisition time in the first historical time.

The first historical time period is a first time period before the acquisition time.

The first period of time is 3 months to 6 months.

The formula (1) is:

；

Qheat exchange amount for the tail end;Cis the specific heat capacity of water; VIs the circulating water flow;ρis the density of water; t (T) ₁ The temperature of the water supply for the circulating water; t (T) ₂ Is the return water temperature of the circulating water.

And carrying out correlation regression analysis on the circulating water supply temperature and the tail end heat exchange quantity which correspond to all the acquisition moments in the first historical time period respectively to obtain a first regression equation corresponding to the circulating water supply temperature and the tail end heat exchange quantity.

Substituting the specific value of the circulating water supply temperature in the operation data acquired at any acquisition time in the second historical time period into the first regression equation, and calculating to obtain the specific value of the terminal heat exchange amount corresponding to the acquisition time in the second historical time period.

The first historical time period is a second time period before the acquisition time.

The second period of time is 4 days to 7 days.

Wherein, the optimal water supply pressure interval of the circulating water corresponding to the collecting time is obtained in advance through a second mode.

The second mode includes:

The first period of time is 3 months to 6 months.

The formula (1) is:

；

Qheat exchange amount for the tail end;Cis the specific heat capacity of water;Vis the circulating water flow;ρis the density of water; t (T) ₁ The temperature of the water supply for the circulating water; t (T) ₂ Is the return water temperature of the circulating water.

And carrying out correlation regression analysis on the circulating water supply pressure and the tail end heat exchange quantity respectively corresponding to all the acquisition moments in the first historical time period to obtain a second regression equation corresponding to the circulating water supply pressure and the tail end heat exchange quantity.

Substituting the specific value of the circulating water supply pressure in the operation data acquired at any acquisition time in the second historical time period into the second regression equation, and calculating to obtain the specific value of the terminal heat exchange amount corresponding to the acquisition time in the second historical time period.

The second period of time is 4 days to 7 days.

The data type conversion processing in this embodiment specifically includes: the second type of operation control parameters are converted into floating point type data, and the first type of operation control parameters are converted into Boolean type data.

According to the automatic energy-saving consumption-reducing operation control system of the industrial circulating water system, due to the adoption of the optimization algorithm module, operation control parameters of first equipment in the industrial circulating water system are acquired based on the preprocessed operation data corresponding to the acquisition time and the pre-acquired circulating water optimal water supply temperature interval and circulating water optimal water supply pressure interval corresponding to the acquisition time. In the process of obtaining the operation control parameters of the first equipment, the optimization algorithm module considers various factors such as the water supply temperature of the circulating water, the return water temperature of the circulating water, the flow rate of the circulating water, the water supply pressure of the circulating water, the return water pressure of the circulating water and the like, so that the obtained operation control parameters of the first equipment in the industrial circulating water system can enable the industrial circulating water system to operate in a lower energy consumption state. And the data parameter outputting module is used for carrying out data type conversion treatment on the operation control parameters of the first equipment in the industrial circulating water system to obtain converted operation control parameters. The control signal issuing module is used for converting the converted operation control parameters into corresponding control signals and issuing the control signals to corresponding first equipment in the industrial circulating water system. Compared with the prior art, the automatic energy-saving consumption-reducing operation control system of the industrial circulating water system can realize automatic collaborative work, effectively combines operation control parameters obtained by the data acquisition module, the processing analysis module of the data processing module and the optimization algorithm module, and forms closed loop control by the data parameter output module and the control signal issuing module.

Referring to fig. 2, an automatic energy-saving and consumption-reducing operation control system of an industrial circulating water system in the embodiment is adopted to optimize a circulating water system of a certain food production enterprise, the circulating water system of the certain food production enterprise is composed of two double-speed fan circulating water towers and two circulating water pumps, wherein each double-speed fan circulating water tower comprises a first type fan (high-power fan) and a second type fan (low-power fan), the two circulating water pumps are a variable-frequency water pump and a power frequency water pump, and the detailed process of the circulating water system of the food production enterprise in the embodiment is shown in fig. 3. After the automatic energy-saving consumption-reducing operation control system of the industrial circulating water system is adopted to optimize the circulating water system of the food production enterprise, the operation energy consumption is obviously reduced.

Referring to fig. 4, the fan power consumption, the circulating water pump power consumption and the total power consumption of the system of the circulating water system of a certain food production enterprise are 30 days before and 30 days after optimization, as can be seen from fig. 3, the average daily power consumption of the cooling tower fan of the circulating water system of the food production enterprise is 1304 kW h and 1142 kW h respectively before and 30 days after optimization, and the average daily power consumption is saved by 12%; the average daily power consumption of the circulating water pump before and after the optimization is 3071 kW h and 2547 kW h respectively, and the average daily power consumption is saved by 17%; the total power consumption of the circulating water system is 4375 kW.h and 3689 kW.h respectively, and the daily average power consumption is saved by 16% in 30 days before optimization and 30 days after optimization. In a comprehensive view, the optimization result is remarkable, and the circulating water system of the food production enterprise achieves the purpose of automatic energy-saving consumption-reducing operation control.

In the description of the present invention, it should be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium; may be a communication between two elements or an interaction between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature, which may be in direct contact with the first and second features, or in indirect contact with the first and second features via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is level lower than the second feature.

In the description of the present specification, the terms "one embodiment," "some embodiments," "examples," "particular examples," or "some examples," etc., refer to particular features, structures, materials, or characteristics described in connection with the embodiment or example as being included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that alterations, modifications, substitutions and variations may be made in the above embodiments by those skilled in the art within the scope of the invention.

Claims

1. An automatic energy-saving and consumption-reducing operation control system of an industrial circulating water system is characterized by comprising:

the control signal issuing module is used for converting the converted operation control parameters into corresponding control signals and issuing the control signals to corresponding first equipment in the industrial circulating water system;

The specific mode for acquiring the operation control parameters of the fans in the industrial circulating water system comprises the following steps:

2. The automatic energy-saving and consumption-reducing operation control system of the industrial circulating water system according to claim 1, wherein,

The device bit number data includes: power for each of the first devices.

3. The automatic energy-saving and consumption-reducing operation control system of the industrial circulating water system according to claim 2, wherein the data processing module performs preprocessing on any one of the collected operation data to obtain preprocessed operation data corresponding to the time of the collection, and specifically comprises:

4. The automated energy-saving and consumption-reducing operation control system of an industrial circulating water system according to claim 3, wherein the optimization algorithm module obtains operation control parameters for a first device in the industrial circulating water system, and specifically comprises:

5. The automated energy-saving and consumption-reducing operation control system for an industrial circulating water system of claim 4, wherein the specific manner of obtaining the operation control parameters for the water pump in the industrial circulating water system comprises:

6. The automatic energy-saving and consumption-reducing operation control system of the industrial circulating water system according to claim 5, wherein,

the first starting condition is that the values of start-stop signal parameters corresponding to the fans in the preprocessed operation data corresponding to the adjacent M times of acquisition time before the acquisition time are all values for marking the closing of the fans;

7. The automatic energy-saving and consumption-reducing operation control system of the industrial circulating water system according to claim 6, wherein,

the first mode includes:

The first period of time is 3 months to 6 months;

the formula (1) is:

；

the second period of time is 4 days to 7 days;

8. The automatic energy-saving and consumption-reducing operation control system of the industrial circulating water system according to claim 6, wherein,

the second mode includes:

the first period of time is 3 months to 6 months;

the formula (1) is:

；

the second period of time is 4 days to 7 days;

9. An automated energy saving and consumption reducing operation control system for an industrial circulating water system according to claim 7 or 8, wherein,