Method and device for controlling operation of refrigerating system based on digital twin technology

Abstract

The invention relates to a method and a device for controlling operation of a refrigerating system based on a digital twinning technology, relates to the technical field of agent calculation, and solves the problem of high maintenance frequency of refrigerators during cooperative work of multiple groups of refrigerators. The method comprises the steps that according to output heat generated after heat exchange between supercooled water and a cooling body, a specific number of first refrigerating bodies are selected from a plurality of second refrigerating bodies to operate at the optimal power; the cooling body corresponds to a cooling object in the solid cooling system; the refrigerating body corresponds to a module composed of a refrigerating machine and a heat exchange module in the solid cooling system. With the aim of neutralizing the residual heat, the number of refrigerating bodies participating in operation and the working modes of the refrigerating bodies are adjusted on the basis of the first refrigerating body, so that the temperature of supercooled water input into the heat neutralizing body is kept within the set temperature range; the residual heat is the difference value between the total heat exchange amount and the supercooled water output heat when the specific number of first refrigerating bodies operate at the optimal power.

Description

Technical Field

[0001] The present application relates to the field of intelligent body computing technology, and specifically to a method and device for controlling the operation of a refrigeration system based on digital twin technology. Background Art

[0002] Digital twin technology makes full use of data such as physical models, sensor updates, and operation history, integrates multi-disciplinary, multi-physical quantity, multi-scale, and multi-probability simulation processes, and completes mapping in virtual space, so as to reflect the full life cycle operation process of the corresponding physical physical system with a virtual model. Among them, by digitizing all elements of the physical world, such as people, objects, and events, a corresponding "virtual world" is recreated in cyberspace, thus forming a pattern in which the physical world in the physical dimension and the virtual world in the information dimension coexist and blend the virtual and the real. This is to create a virtual model for a physical object in a digital way to simulate its behavior in a real environment.

[0003] Therefore, the operation process of the physical system can be monitored by monitoring the data of the virtual model, and the operation mode of the physical equipment can be controlled by controlling the virtual model.

[0004] The chiller refrigeration system has three interconnected systems: the refrigerant circulation system, the water circulation system, and the electrical automatic control system. The core of the refrigerant circulation system is the compressor, which is also called the power source for the refrigerant compression of the refrigerant circulation system. Its function is to convert the input electrical energy into mechanical energy, circulate and compress the refrigerant to continuously generate cooling capacity. The water circulation system injects cold water into the equipment to be cooled for cooling, and the electrical automatic control system connects the refrigeration machine circulation system and the water circulation system to realize the automatic intelligent cooling of the chiller.

[0005] The chiller system has certain limits on cooling. If the high-temperature water returned is above 50°, the refrigeration pressure of the refrigerant circulation system will be very high, which will easily lead to damage to the refrigeration equipment in the long run. The cooling effect for high-temperature water above 50° is also limited. Therefore, the existing chillers are generally used to cool high-temperature water below 50°, and their scope of use is limited.

[0006] In view of the above problems, relevant personnel proposed that the chiller system adopts multiple groups of refrigeration machines to work together to maintain the high temperature water within 50℃. However, when multiple groups of refrigeration machines work together, it is easy to lead to the problem of high maintenance frequency of the refrigeration machines. In addition, since the cooling capacity is allocated to multiple groups of refrigeration machines working together, it is easy for individual refrigeration machines to operate at low power consumption. When the refrigeration machine runs at low power consumption, the energy consumption increases, and the internal components (such as compressor, condenser, evaporator, etc.) will bear greater loads and wear, thereby accelerating the aging and damage of the equipment. Summary of the invention

[0007] The present application aims to provide a refrigeration system operation control method and device based on digital twin technology. According to the relationship between the heat that can be neutralized by supercooled water and the heat exchanged between the supercooled water and the cooling object, the working modes of multiple groups of refrigerators are dynamically adjusted, the number of operating refrigerators is controlled while ensuring the heat exchange effect, and the refrigerator is prevented from running in a low power consumption mode, thereby avoiding the problem of high maintenance frequency of refrigerators when multiple groups of refrigerators work together, and reducing the speed of aging and damage of refrigerator equipment.

[0008] In a first aspect, an embodiment provides a refrigeration system operation control method based on digital twin technology, which is applied to an electronic device, wherein the electronic device monitors and controls the operation of a physical cooling system through a cooling system model, wherein the cooling system model is a digital model established by simulating a physical cooling system using digital twin technology, and wherein the cooling system model includes a heat neutralizer corresponding to a supercooled water tank in the physical cooling system, and the method includes: selecting a specific number of first refrigeration bodies from a plurality of second refrigeration bodies to operate at optimal power according to the output heat after heat exchange between supercooled water and the cooling body; the cooling body corresponds to a cooling object in the physical cooling system; the refrigeration body corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system; with the goal of neutralizing residual heat, adjusting the number of refrigeration bodies participating in the operation and the working mode of the refrigeration body on the basis of the first refrigeration body to maintain the temperature of the supercooled water input into the heat neutralizer within a set temperature range; the residual heat is the difference between the total heat exchange amount and the output heat of the supercooled water when the specific number of first refrigeration bodies operate at optimal power.

[0009] In one embodiment, with the goal of neutralizing the residual heat, adjusting the number of refrigeration bodies involved in the operation and the working mode of the refrigeration bodies based on the first refrigeration body includes:

[0010] When the heat output of the supercooled water increases, a target second refrigeration body with the shortest historical working time is selected from among the second refrigeration bodies and determined as a third refrigeration body for heat exchange with the residual heat;

[0011] According to the influence of the supercooled water output heat accumulated over time on the adjustable heat, the third refrigeration body is controlled to start operation; the adjustable heat is the heat range for maintaining the overall neutralization of the supercooled water within the set temperature range.

[0012] In one embodiment, according to the influence of the supercooled water output heat accumulated over time on the adjustable heat, controlling the operation of the third refrigeration body includes:

[0013] When it is detected that the temperature of the supercooled water in the heat neutralization body rises to a maximum value exceeding the set temperature range, the third refrigeration body is started to operate at the optimal power.

[0014] In one embodiment, according to the influence of the supercooled water output heat accumulated over time on the adjustable heat, controlling the operation of the third refrigeration body includes:

[0015] Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power;

[0016] When the residual heat increases to the single-unit heat, the third refrigeration unit is started to operate at the optimal power.

[0017] In one embodiment, the method further comprises:

[0018] Real-time detection of the total amount of supercooled water in the heat neutralizer, and calculation of adjustable heat for supplementing the heat fluctuation of the supercooled water;

[0019] With the goal of neutralizing the residual heat, the number of refrigeration bodies involved in the operation and the working mode of the refrigeration bodies are adjusted based on the first refrigeration body, including:

[0020] When a specific number of first refrigeration bodies are operating at optimal power, the working modes of the first refrigeration bodies are dynamically adjusted according to the influence of the supercooled water output heat accumulated over time on the adjustable heat.

[0021] In one embodiment, the influence of the supercooled water output heat accumulated over time on the adjustable heat includes a decrease in the supercooled water output heat, and in the process of a specific number of first refrigeration bodies operating at optimal power, dynamically adjusting the working mode of the first refrigeration body according to the influence of the supercooled water output heat accumulated over time on the adjustable heat, including:

[0022] Obtaining the historical working time of each first refrigeration body;

[0023] When it is detected that the heat output of the supercooled water is reduced, the amount of supercooled water inputted to the one of the first refrigeration units corresponding to the longest historical operating time is controlled to be reduced.

[0024] In one embodiment, when it is detected that the heat output of the supercooled water decreases, the one of the first refrigeration units corresponding to the longest historical working time is controlled to stop operating.

[0025] In one embodiment, the method further includes obtaining the specific number; obtaining the specific number includes:

[0026] Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power;

[0027] The number of the second refrigeration bodies allocated to the supercooled water carrying the complete heat of the individual bodies is obtained and determined as the specific number.

[0028] In one embodiment, the method further comprises:

[0029] Obtaining a historical working time length of each second refrigeration body among the plurality of second refrigeration bodies;

[0030] According to the heat output of the supercooled water, a specific number of first refrigeration bodies are selected from a plurality of second refrigeration bodies to operate at an optimal power, comprising:

[0031] Arrange the plurality of second refrigeration bodies in ascending order according to the length of corresponding historical working time, and distribute the supercooled water carrying the heat of the monomer to the second refrigeration body arranged before a specific order; the specific order is the same as the value of the specific number;

[0032] The second refrigeration body receiving the supercooled water corresponding to the heat of the monomer is determined to be the first refrigeration body, so as to control the first refrigeration body corresponding to the first refrigeration body in the physical cooling system to operate at the optimal power.

[0033] In a second aspect, an embodiment provides a refrigeration system operation control device based on digital twin technology, the device comprising:

[0034] A selection module is used to select a specific number of first cooling bodies from a plurality of second cooling bodies to operate at an optimal power according to the output heat after heat exchange between the supercooled water and the cooling body; the cooling body corresponds to a cooling object in the physical cooling system; the cooling body corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system;

[0035] The adjustment module is used to adjust the number of refrigeration bodies participating in the operation and the working mode of the refrigeration bodies based on the first refrigeration body with the goal of neutralizing the residual heat, so as to maintain the temperature of the supercooled water input into the heat neutralization body within a set temperature range; the residual heat is the difference between the total heat exchange amount when the specific number of first refrigeration bodies operate at optimal power and the heat output of the supercooled water.

[0036] The beneficial effects of this application are:

[0037] The embodiment of the present application selects some refrigerators to operate at optimal power according to the heat after heat exchange between the supercooled water and the cooling object, thereby avoiding the situation where multiple refrigerators are running at the same time but the heat required for heat exchange is not high enough, resulting in several refrigerators running at low power; if there is a difference between the heat that can be cooled by some refrigerators running at optimal power and the heat that needs to be cooled, it is neutralized by the supercooled water in the cooling water tank. Therefore, the present application monitors the heat, temperature, time and other data of the supercooled water, analyzes the heat that can be neutralized by the supercooled water in the cooling water tank, adjusts the number of running refrigerators, and adjusts the working mode of the refrigerator, so as to maintain the cooling capacity of the supercooled water in the cooling water tank always within the range that can neutralize the remaining heat, and measures the cooling capacity of the supercooled water in the cooling water tank by temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a schematic diagram of the structure of an exemplary physical cooling system of the present application;

[0039] Figure 2 This is a schematic diagram of a cooling system model generated by using a digital twin to simulate a physical cooling system in an example of the present application;

[0040] Figure 3 It is a flowchart of the steps of the refrigeration system operation control method based on digital twin technology proposed in the embodiment of the present application;

[0041] Figure 4 It is a functional module diagram of a refrigeration system operation control device based on digital twin technology proposed in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The present application is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are intended to enable the present application to be better understood. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, in order to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0043] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0044] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0045] The refrigeration system operation control method based on digital twin technology proposed in the embodiment of the present application adopts digital twin technology to create a virtual model of the physical cooling system to obtain a cooling system model, and the modules in the cooling system model correspond one-to-one to different devices of the physical cooling system.

[0046] Figure 1 is a schematic diagram of a structure of an exemplary physical cooling system of the present application, such as Figure 1 As shown, the physical cooling system includes a cooling object, a flow distribution module, a plurality of refrigerators, each refrigerator is connected to a corresponding heat exchange module, a cooling water tank, and a circulation pump. The circulation pump provides power for the cooling water circulation.

[0047] The cooling object is a heat generating device that needs to be cooled. The cooling water tank provides supercooled water. The supercooled water flows through the cooling object and exchanges heat with the cooling object. The supercooling heat increases and the temperature rises. The supercooled water after the temperature rises is diverted and flows into different heat exchange modules. The refrigerator compresses the refrigerant to cool the supercooled water in the heat exchange module. The cooled supercooled water flows into the cooling water tank.

[0048] Multiple chillers work at the same time to improve cooling efficiency. A cooling water tank is also provided, and sufficient supercooled water in the cooling water tank can neutralize the heat of the supercooled water, thereby reducing the number of chillers in operation.

[0049] The embodiment of the present application also sets a first detection unit in the cooling water tank to detect the temperature of the cooling water tank, sets a second detection unit in the channel where the supercooled water flows from the cooling water tank to the cooling object to detect the temperature and heat carried by the supercooled water flowing into the cooling object, and sets a third detection unit in the channel where the supercooled water flows from the cooling object to the diversion module to detect the temperature and heat carried by the supercooled water after heat exchange with the cooling object. According to the temperature and heat carried by the cooling supercooled water at the above three nodes, it is analyzed whether the cooling of the supercooled water by the refrigerator is sufficient to meet the heat exchange demand of the supercooled water for the current cooling object.

[0050] In view of the prior art, when multiple groups of refrigerators work together, the problem of high maintenance frequency of refrigerators is likely to occur. Moreover, since the heat generated by the refrigeration object is fluctuating and linearly gradient, when multiple groups of refrigerators work together to cool the refrigeration object at the same time, there is often a refrigerator in a low operating power state. In the low operating state, the energy consumption of the refrigerator increases. In view of the above problems, the embodiment of the present application is provided with a cooling water tank. The sufficient supercooled water in the cooling water tank can neutralize part of the heat, thereby reducing the number of operating refrigerators. On this basis, the digital twin technology is used to simulate the physical cooling system to obtain a virtual model of the corresponding physical cooling system. The virtual model forms a cooling system model. The various data changes in the cooling system model are the same as the various data changes in the physical cooling system. The cooling system model reasonably allocates multiple refrigerators based on the heat exchange requirements of the cooling object and the temperature changes of the supercooled water in the cooling water tank, so as to achieve the effect that the working time of multiple refrigerators is equivalent and the working refrigerators are maintained to operate at high power consumption.

[0051] Figure 2 This is a schematic diagram of a cooling system model generated by using a digital twin to simulate a physical cooling system, as shown in the example of the present application. Figure 2 As shown, the cooling system model includes a heat neutralizing body, a refrigerating body, and a cooling body; the cooling body corresponds to the cooling object in the physical cooling system; the refrigerating body corresponds to the module composed of the refrigerator and the heat exchange module in the physical cooling system; the heat neutralizing body corresponds to the supercooled water tank in the physical cooling system. The cooling system model also includes a first data acquisition body corresponding to the first detection unit, a second data acquisition body corresponding to the second detection unit, and a third data acquisition body corresponding to the third detection unit. The cooling system model also includes a diverter corresponding to the diverter module, which is used to pass different amounts of supercooled water into different heat exchange modules according to instructions. The cooling system model also includes a circulating body corresponding to the circulating pump.

[0052] Figure 3 is a flowchart of the steps of the refrigeration system operation control method based on digital twin technology proposed in the embodiment of the present application, such as Figure 3 As shown, the electronic device monitors and controls the operation of the physical cooling system through the cooling system model, and the steps include:

[0053] S301: Selecting a specific number of first refrigeration bodies from a plurality of second refrigeration bodies to operate at an optimal power according to the output heat after the supercooled water exchanges heat with the cooling body.

[0054] For example, data monitored by a third data acquisition body can be collected to obtain the total heat carried by supercooled water after heat exchange with the cooling body, and then some refrigeration bodies can be selected to operate according to the amount of total heat, thereby reducing the number of operating refrigeration bodies, that is, reducing the number of refrigerators running simultaneously in the physical cooling system, and avoiding the frequent occurrence of problems such as high frequency of refrigerator maintenance when multiple groups of refrigerators work together.

[0055] The cooling body in the cooling system model simulates the heat exchange process of supercooled water passing through the cooling object. Therefore, the output heat of the supercooled water can be collected through the third data acquisition body. The output heat of the supercooled water represents the heat that needs to be exchanged by all working refrigerators.

[0056] S302: With the goal of neutralizing the residual heat, the number of refrigeration bodies involved in the operation and the working mode of the refrigeration bodies are adjusted based on the first refrigeration body to maintain the temperature of the supercooled water input into the heat neutralization body within a set temperature range.

[0057] The residual heat is the difference between the total heat exchange amount when the specific number of first refrigeration bodies operate at optimal power and the heat output by the supercooled water.

[0058] By maintaining the temperature of the supercooled water in the heat neutralizer within the set temperature range, the cooling water tank's ability to neutralize excess heat is maintained, thereby maintaining fewer refrigerators involved in cooling work for a certain period of time.

[0059] The cooling water tank corresponding to the heat neutralizer in the physical cooling system stores sufficient supercooled water to neutralize excess heat in the supercooled water, thereby reducing the number of running refrigerators.

[0060] Adjusting the number of refrigeration bodies participating in the operation and the working mode of the refrigeration bodies based on the first refrigeration body may include: selecting more refrigeration bodies from the second refrigeration body to join the refrigeration operation; adjusting the operating power of the first refrigerator, etc.

[0061] Since the cooling system model is a virtual digital model corresponding to the physical cooling system in the real world, the physical cooling system can be used to monitor and adjust the physical entity or system by operating the refrigeration body.

[0062] Therefore, based on steps S301 and S302, the embodiment of the present application selects some refrigerators to operate at optimal power according to the heat after heat exchange between the supercooled water and the cooling object, thereby avoiding the situation where multiple refrigerators are running at the same time but the heat required for heat exchange is not high enough, resulting in low-power operation of several refrigerators; if there is a difference between the heat that can be cooled by some refrigerators running at optimal power and the heat that needs to be cooled, it is neutralized by the supercooled water in the cooling water tank. Therefore, the present application monitors the heat, temperature, time and other data of the supercooled water, analyzes the heat that can be neutralized by the supercooled water in the cooling water tank, adjusts the number of running refrigerators, and adjusts the working mode of the refrigerator to maintain the cooling capacity of the supercooled water in the cooling water tank always within the range that can neutralize the remaining heat, and measures the cooling capacity of the supercooled water in the cooling water tank by temperature.

[0063] The heat generated by the cooling object changes dynamically. At the same time, the neutralization heat in the supercooled water in the cooling water tank increases with time, and the energy of neutralizing heat in the supercooled water decreases as the water tank temperature rises. Therefore, the embodiment of the present application dynamically adjusts the number of refrigeration bodies and the working modes of the refrigeration bodies according to the overall operation of the physical cooling system reflected by the cooling system model, so as to adjust the number of refrigerators working in the physical cooling system and the working modes of the refrigerators, control the number of operating refrigerators while ensuring the heat exchange effect, and avoid the refrigerators running in low power consumption mode.

[0064] Factors that affect whether the supercooled water in the cooling water tank can neutralize the remaining heat include: the heat generated by the cooling body of the corresponding cooling object, which is expressed as the required cooling capacity in some examples; the temperature of the supercooled water. As the operating time of the refrigerator increases, the total amount of heat neutralized by the supercooled water in the cooling water tank increases, and the temperature of the supercooled water increases, and the heat that can be neutralized decreases.

[0065] In view of the above-mentioned influence, the embodiment of the present application proposes a specific implementation method of executing step S302; in one of the methods, step S302 includes sub-steps: S3021 to S3023:

[0066] S3021: Detect the output heat of supercooled water. The output heat of supercooled water is the heat added after the supercooled water exchanges heat with the cooling object. The output heat of supercooled water can be obtained by collecting the heat change of the cooling object or by calculating the difference between temperature 1 and temperature 2. The second data acquisition body collects supercooled water temperature 1, and the third data acquisition body collects supercooled water temperature 2.

[0067] S3022: When the output heat of the supercooled water increases, a target second refrigeration body having the shortest historical operating time is selected from among the second refrigeration bodies, and is determined as a third refrigeration body for performing heat exchange with the residual heat.

[0068] When the heat output of the supercooled water does not increase, the quantity of the first refrigeration body is maintained.

[0069] S3023: Control and start the operation of the third refrigeration body according to the influence of the supercooled water output heat accumulated over time on the adjustable heat; the adjustable heat is the heat range for maintaining the overall neutralization of the supercooled water within the set temperature range.

[0070] The influence of the supercooled water output heat accumulated over time on the adjustable heat refers to judging whether the supercooled water output heat affects the heat dilution capacity of the supercooled water in the cooling water tank.

[0071] In one example of the present application, a certain heat threshold can be set according to the heat neutralization capacity of a certain mass of supercooled water in the cooling water tank. When the output heat of the supercooled water rises to the set heat threshold after heat exchange with the cooling object, it indicates that more refrigeration machines are needed to exchange heat with the supercooled water in order to maintain the temperature of the supercooled water in the cooling water tank within the set temperature range and maintain safe operation of the system.

[0072] In another example of the present application, the output heat of supercooled water is detected, and the difference between the output heat of supercooled water of the cooling object and the total cooling capacity of the existing refrigeration body can be calculated to obtain the residual heat that needs to be neutralized by the supercooled water. If the residual heat is greater than the heat exchange capacity of a refrigerator when operating at optimal power, a third refrigeration body can be selected from the second refrigeration body and started to supplement the cooling capacity of the first refrigeration body.

[0073] In this example, according to the influence of the supercooled water output heat accumulated over time on the adjustable heat, controlling the operation of the third refrigeration body includes:

[0074] Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power;

[0075] Individual heat refers to the amount of cooling that a single refrigerator can produce when operating at optimal power.

[0076] When the residual heat increases to the single-unit heat, the third refrigeration unit is started to operate at the optimal power.

[0077] In the above process, the refrigerator corresponding to the started third refrigeration body still operates at the optimal power, which further avoids the low-power operation of the refrigerator.

[0078] When it is detected that the temperature of the supercooled water in the heat neutralization body rises to a maximum value exceeding the set temperature range, the third refrigeration body is started to operate at the optimal power.

[0079] Assuming that after calibration, the temperature of the supercooled water in the cooling water tank is in the range of {T1, T2}, which can maintain the normal operation of the supercooled water in the cooling system, when at least one of the following conditions is detected, the running refrigerator is increased; the conditions include: the temperature of the supercooled water in the cooling water tank exceeds T2, and the output heat after the supercooled water exchanges heat with the cooling object increases to the set heat threshold.

[0080] In one example of the present application, it is also possible to first determine whether the output heat after the supercooled water exchanges heat with the cooling object rises to the set heat threshold. If the output heat after the supercooled water exchanges heat with the cooling object rises to the set heat threshold, it is determined to increase the operating refrigerator. Before adding the operating refrigerator, it is also possible to determine whether the temperature of the supercooled water in the heat neutralizer of the corresponding cooling water tank rises to a maximum value exceeding the set temperature range. If the temperature of the supercooled water in the heat neutralizer rises to a maximum value exceeding the set temperature range, the third cooling body is started to operate at the optimal power. The number of third cooling bodies can be multiple.

[0081] When it is detected that the heat output of the supercooled water increases, the refrigerator with the shortest historical working time is selected from the second refrigerator as the third refrigerator. The third refrigerator is operated to ensure that the system cooling capacity can adapt to the high heat output of the cooling object, balance the working time of each refrigerator, and limit the maintenance time of each refrigerator to a certain range, thereby solving the problem of high maintenance frequency of the refrigerator.

[0082] In one way of running step S302, step S302 includes sub-steps:

[0083] S302-1: Detect the total amount of supercooled water in the heat neutralizer in real time, and calculate the adjustable heat for supplementing the heat fluctuation of the supercooled water.

[0084] S302-2: When a specific number of first refrigeration bodies are operating at optimal power, the working mode of the first refrigeration bodies is dynamically adjusted according to the influence of the supercooled water output heat accumulated over time on the adjustable heat.

[0085] The influence of the supercooled water output heat accumulated over time on the adjustable heat includes a decrease in the supercooled water output heat. When it is detected that the output heat of the supercooled water decreases after heat exchange with the cooling object, the flow rate in part of the first refrigerator can be reduced.

[0086] Obtaining the historical working time of each first refrigeration body;

[0087] When it is detected that the heat output of the supercooled water is reduced, the amount of supercooled water inputted to the one of the first refrigeration units corresponding to the longest historical operating time is controlled to be reduced.

[0088] Alternatively, when it is detected that the heat output of the supercooled water decreases, the one of the first refrigeration units corresponding to the longest historical operating time is controlled to stop operating.

[0089] By detecting that the heat output of the supercooled water is reduced, the number of first refrigeration bodies in operation can be reduced, the working time of the refrigerator can be reduced, and overly frequent maintenance can be avoided.

[0090] The embodiment of the present application also proposes a specific implementation process of executing step S301; step S301 includes sub-steps S3011 to S3012:

[0091] S3011: Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power.

[0092] S3012: Obtain the number of second refrigeration bodies allocated to the supercooled water carrying the complete heat of the individual bodies, and determine it as the specific number.

[0093] For example, assuming that the single-unit heat, that is, the heat that can be exchanged by the cooling capacity generated by a single refrigerator operating at optimal power is Q2, the output heat after heat exchange between the supercooled water and the cooling body is Q1, and the supercooled water carrying the target supercooled water volume of Q2 is distributed to the refrigerator, and the refrigerator distributed with the supercooled water with the target supercooled water volume is the first refrigerator.

[0094] An example of the present application also proposes a method of precalculating a specific number, dividing Q2 by Q1 to get an integer value N and a remainder value q, N is a specific number, then the first refrigeration body of number N can be selected in advance from the second refrigeration body, and the N portions of supercooled water carrying the target supercooled water volume of Q2 are distributed to the first refrigeration machine through the corresponding model of the diversion module, and the supercooled water carrying the supercooled water volume of q is passed into the refrigeration body, and the first refrigeration body that has the supercooled water volume of the target supercooled water volume is started to operate at the optimal power. The refrigeration body that has the supercooled water volume of q is used as the third refrigeration body, and the corresponding refrigeration machine of the third refrigeration body does not work. The corresponding third refrigeration body can select the refrigeration machine with the longest working history event, and the supercooled water in the cooling water tank neutralizes the heat q.

[0095] If it is subsequently detected that Q1 increases to a set heat threshold, the third cooling body can be started. In particular, when q increases to Q2, the third cooling body can be started to control the corresponding refrigerator of the third cooling body to operate at optimal power.

[0096] If it is subsequently detected that Q1 decreases, especially when the cooling water flow of the heat exchange module corresponding to the cooling water with a cooling capacity of q drops to zero, the first refrigerator with the longest accumulated historical working time is selected, and its corresponding cooling water flow is controlled to decrease, so as to ensure that the accumulated working time of each refrigerator is similar.

[0097] If it is subsequently detected that the temperature of the cooling water tank is greater than the maximum value of the set temperature range, the refrigerator that controls the cooling water with a cooling capacity of q to start working, so that the corresponding cooling water temperature is reduced and enters the cooling water tank to lower the temperature of the cooling water tank, and the temperature in the cooling water tank is fine-tuned to control the temperature of the cooling water tank within the preset temperature range, so that the cooling effect on the refrigeration object is more stable and the energy efficiency is improved.

[0098] The target amount of supercooled water carried by Q2 can be calculated by the following formula (1):

[0099]

[0100] When Q is Q2, the amount of supercooled water carried by Q2 is calculated; when Q is Q1, the amount of supercooled water carried by Q1 is calculated. It is the mass flow rate of cooling water (unit: kilograms per second, kg / s), that is, the mass of fluid passing through a certain cross section per unit time. p is the constant pressure specific heat capacity of cooling water (unit: joule per kilogram Celsius), and ΔT is the temperature difference between the current temperature of the cooling water and the temperature required after cooling (unit: Celsius, ℃ or Kelvin K).

[0101] The embodiment of the present application also provides that the first refrigerator can be selected based on the historical working time of the second refrigerator.

[0102] The method further comprises:

[0103] Obtaining a historical working time length of each second refrigeration body among the plurality of second refrigeration bodies;

[0104] According to the heat output of the supercooled water, a specific number of first refrigeration bodies are selected from a plurality of second refrigeration bodies to operate at an optimal power, comprising:

[0105] Arrange the plurality of second refrigeration bodies in ascending order according to the length of corresponding historical working time, and distribute the supercooled water carrying the heat of the monomer to the second refrigeration body arranged before a specific order; the specific order is the same as the value of the specific number;

[0106] The second refrigerant receiving the supercooled water corresponding to the heat of the monomer is determined to be the first refrigerant, and the first refrigerant corresponding to the first refrigerant in the physical cooling system is controlled to operate at the optimal power.

[0107] For example, divide Q2 by Q1 to get an integer value N and a remainder value q, and select N first refrigerators in the second refrigeration body in order of the corresponding historical working time lengths from small to large. Pass the target supercooled water volume carrying Q2 into the N first refrigerators, start the N first refrigerators and operate at optimal power to ensure that the working time of the refrigerators corresponding to the multiple refrigeration bodies is balanced.

[0108] Figure 4 is a functional module diagram of a refrigeration system operation control device based on digital twin technology proposed in an embodiment of the present application, such as Figure 4 As shown, the refrigeration system operation control device based on digital twin technology includes:

[0109] A selection module 41 is used to select a specific number of first cooling bodies from a plurality of second cooling bodies to operate at an optimal power according to the output heat after the supercooled water exchanges heat with the cooling body; the cooling body corresponds to a cooling object in the physical cooling system; the cooling body corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system;

[0110] The adjustment module 42 is used to adjust the number of refrigeration bodies participating in the operation and the working mode of the refrigeration bodies based on the first refrigeration body with the goal of neutralizing the residual heat, so as to maintain the temperature of the supercooled water input into the heat neutralization body within a set temperature range; the residual heat is the difference between the total heat exchange amount when the specific number of first refrigeration bodies operate at optimal power and the heat output of the supercooled water.

[0111] Figure 4 The implementation principle and technical effects of the refrigeration system operation control device based on digital twin technology provided in the illustrated embodiment can be further referred to the relevant description in the embodiment of the refrigeration system operation control method based on digital twin technology.

[0112] Optionally, the adjustment module includes:

[0113] A selection submodule, configured to select, when the output heat of the supercooled water increases, a target second refrigeration body with the shortest historical working time among the second refrigeration bodies, and determine it as a third refrigeration body for heat exchange with the residual heat;

[0114] The control submodule is used to control the start of the third refrigeration body according to the influence of the supercooled water output heat accumulated over time on the adjustable heat; the adjustable heat is the heat range of the overall neutralization of the supercooled water to maintain the supercooled water within the set temperature range.

[0115] Optionally, the first control submodule is specifically configured to start the third refrigeration body to operate at the optimal power when it is detected that the temperature of the supercooled water in the heat neutralization body rises to a maximum value exceeding the set temperature range.

[0116] Optionally, the first control submodule is specifically used to calculate the monomer heat exchanged with the supercooled water when the refrigeration body operates at an optimal power;

[0117] When the residual heat increases to the single-unit heat, the third refrigeration unit is started to operate at the optimal power.

[0118] Optionally, the device further comprises:

[0119] A calculation module, used for detecting the total amount of supercooled water in the heat neutralizer in real time, and calculating the adjustable heat for supplementing the heat fluctuation of the supercooled water;

[0120] The adjustment module includes a first adjustment submodule, which is used to dynamically adjust the working mode of the first refrigeration body according to the influence of the supercooled water output heat accumulated over time on the adjustable heat during the process of a specific number of first refrigeration bodies operating at optimal power.

[0121] Optionally, the influence of the supercooled water output heat accumulated over time on the adjustable heat includes a decrease in the supercooled water output heat, and the adjustment module includes:

[0122] A time detection submodule, used for obtaining the historical working time of each first refrigeration body;

[0123] The first adjustment submodule is used for controlling the first refrigeration unit corresponding to the one with the longest historical working time to reduce the amount of supercooled water input when it is detected that the output heat of the supercooled water is reduced.

[0124] A second control submodule is used for controlling the one of the first refrigeration machines corresponding to the longest historical working time to stop running when it is detected that the output heat of the supercooled water is reduced;

[0125] Optionally, the second control submodule is further configured to control the one of the first refrigeration units with the longest historical working time to stop operating when it is detected that the output heat of the supercooled water decreases.

[0126] Optionally, the selection module includes:

[0127] A calculation submodule, used for calculating the monomer heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at an optimal power;

[0128] The allocation submodule is used to obtain the number of second refrigeration bodies allocated to the supercooled water carrying the complete single-body heat, and determine it as the specific number.

[0129] Optionally, the device further comprises:

[0130] A time detection module, used to obtain the historical working time length of each second refrigeration body among the plurality of second refrigeration bodies;

[0131] The selection module is specifically used to arrange the plurality of second refrigeration bodies in ascending order according to the length of corresponding historical working time, and allocate the supercooled water carrying the heat of the monomer to the second refrigeration body arranged before a specific order; the specific order is the same as the value of the specific number;

[0132] The second refrigeration body receiving the supercooled water corresponding to the heat of the monomer is determined to be the first refrigeration body, so as to control the first refrigeration body corresponding to the first refrigeration body in the physical cooling system to operate at the optimal power.

[0133] Regarding the various modules / units included in the various devices described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining modules / units can be implemented in the form of hardware such as circuits; for various devices applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. The software program may be implemented in the form of a program, which runs on a processor integrated in the chip module, and the remaining modules / units may be implemented in the form of hardware such as circuits; for each device applied to or integrated in the electronic terminal device, each module / unit contained therein may be implemented in the form of hardware such as circuits, and different modules / units may be located in the same component (for example, a chip, a circuit module, etc.) or in different components in the electronic terminal device, or at least some modules / units may be implemented in the form of a software program, which runs on a processor integrated in the electronic terminal device, and the remaining (if any) modules / units may be implemented in the form of hardware such as circuits.

[0134] In one embodiment of the present application, a computer-readable storage medium is provided, on which a program is stored. The stored program includes a method that can be loaded by a processor and process any of the above embodiments.

[0135] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0136] The above specific examples are used to illustrate the present application, which is only used to help understand the present application and is not intended to limit the present application. For technicians in the technical field to which the present application belongs, they can also make some simple deductions, deformations or substitutions based on the ideas of the present application.

Claims

1. A refrigeration system operation control method based on digital twin technology, characterized in that: Applied to electronic equipment, the electronic equipment monitors and controls the operation of a physical cooling system through a cooling system model, the cooling system model is a digital model established by simulating a physical cooling system using digital twin technology, the cooling system model includes a heat neutralizer corresponding to a supercooling water tank in the physical cooling system, and the method includes: According to the output heat after the supercooled water and the cooling body exchange heat, a specific number of first cooling bodies are selected from a plurality of second cooling bodies to operate at an optimal power; the cooling body corresponds to a cooling object in the physical cooling system; the cooling body corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system; With the goal of neutralizing the residual heat, the number of refrigeration bodies participating in the operation and the working mode of the refrigeration bodies are adjusted on the basis of the first refrigeration body to maintain the temperature of the supercooled water input into the heat neutralization body within a set temperature range; the residual heat is the difference between the total heat exchange amount when the specific number of first refrigeration bodies operate at optimal power and the heat output of the supercooled water.

2. The method according to claim 1, characterized in that: With the goal of neutralizing the residual heat, the number of refrigeration bodies involved in the operation and the working mode of the refrigeration bodies are adjusted based on the first refrigeration body, including: When the heat output of the supercooled water increases, a target second refrigeration body with the shortest historical working time is selected from among the second refrigeration bodies and determined as a third refrigeration body for heat exchange with the residual heat; According to the influence of the supercooled water output heat accumulated over time on the adjustable heat, the third refrigeration body is controlled to start operation; the adjustable heat is the heat range for maintaining the overall neutralization of the supercooled water within the set temperature range.

3. The method according to claim 2, characterized in that According to the influence of the supercooled water output heat accumulated over time on the adjustable heat, controlling the operation of the third refrigeration body includes: When it is detected that the temperature of the supercooled water in the heat neutralization body rises to a maximum value exceeding the set temperature range, the third refrigeration body is started to operate at the optimal power.

4. The method according to claim 2, characterized in that: According to the influence of the supercooled water output heat accumulated over time on the adjustable heat, controlling the operation of the third refrigeration body includes: Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power; When the residual heat increases to the single-unit heat, the third refrigeration unit is started to operate at the optimal power.

5. The method according to claim 1, characterized in that The method further comprises: Real-time detection of the total amount of supercooled water in the heat neutralizer, and calculation of adjustable heat for supplementing the heat fluctuation of the supercooled water; With the goal of neutralizing the residual heat, the number of refrigeration bodies involved in the operation and the working mode of the refrigeration bodies are adjusted based on the first refrigeration body, including: When a specific number of first refrigeration bodies are operating at optimal power, the working modes of the first refrigeration bodies are dynamically adjusted according to the influence of the supercooled water output heat accumulated over time on the adjustable heat.

6. The method according to claim 5, characterized in that The influence of the supercooled water output heat accumulated over time on the adjustable heat includes a decrease in the supercooled water output heat. In the process of a specific number of first refrigeration bodies operating at optimal power, according to the influence of the supercooled water output heat accumulated over time on the adjustable heat, the working mode of the first refrigeration body is dynamically adjusted, including: Obtaining the historical working time of each first refrigeration body; When it is detected that the heat output of the supercooled water is reduced, the amount of supercooled water inputted to the one of the first refrigeration units corresponding to the longest historical operating time is controlled to be reduced.

7. The method according to claim 6, characterized in that When it is detected that the output heat of the supercooled water is reduced, the one of the first refrigeration units corresponding to the longest historical operating time is controlled to stop operating.

8. The method according to claim 1, characterized in that The method further includes obtaining the specific number; obtaining the specific number includes: Calculate the individual heat exchanged between the refrigeration body and the supercooled water when the refrigeration body operates at optimal power; The number of the second refrigeration bodies allocated to the supercooled water carrying the complete heat of the individual bodies is obtained and determined as the specific number.

9. The method according to claim 7, characterized in that: The method further comprises: Obtaining a historical working time length of each second refrigeration body among the plurality of second refrigeration bodies; According to the heat output of the supercooled water, a specific number of first refrigeration bodies are selected from a plurality of second refrigeration bodies to operate at an optimal power, comprising: Arrange the plurality of second refrigeration bodies in ascending order according to the length of corresponding historical working time, and distribute the supercooled water carrying the heat of the monomer to the second refrigeration body arranged before a specific order; the specific order is the same as the value of the specific number; The second refrigeration body receiving the supercooled water corresponding to the heat of the monomer is determined to be the first refrigeration body, so as to control the first refrigeration body corresponding to the first refrigeration body in the physical cooling system to operate at the optimal power.

10. A refrigeration system operation control device based on digital twin technology, characterized in that: The device is provided in an electronic device, wherein the electronic device monitors and controls the operation of the physical cooling system through a digital cooling system model. The cooling system model is a digital model established by simulating the physical cooling system using digital twin technology. The digital model includes a heat neutralizer corresponding to the supercooling water tank in the physical cooling system. The device includes: A selection module is used to select a specific number of first cooling bodies from a plurality of second cooling bodies to operate at an optimal power according to the output heat after heat exchange between the supercooled water and the cooling body; the cooling body corresponds to a cooling object in the physical cooling system; the cooling body corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system; The adjustment module is used to adjust the number of refrigeration bodies participating in the operation and the working mode of the refrigeration bodies based on the first refrigeration body with the goal of neutralizing the residual heat, so as to maintain the temperature of the supercooled water input into the heat neutralization body within a set temperature range; the residual heat is the difference between the total heat exchange amount when the specific number of first refrigeration bodies operate at optimal power and the heat output of the supercooled water.

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