Method and apparatus for controlling operation of a refrigeration system based on digital twin technology

Abstract

The application relates to a method and device for controlling operation of a refrigeration system based on digital twin technology, and belongs to the technical field of intelligent agent computing, and solves the problem that high maintenance frequency of refrigerators is easily caused when multiple groups of refrigerators work cooperatively. The method comprises the following steps: selecting a specific number of first refrigerators from multiple second refrigerators to operate at optimal power according to output heat after supercooled water exchanges heat with a cooling body; the cooling body corresponds to a cooling object in the entity cooling system; the refrigerators correspond to a module composed of refrigerators and heat exchange modules in the entity cooling system; on the basis of the first refrigerators, the number of refrigerators participating in operation and the working mode of the refrigerators are adjusted to maintain the temperature of supercooled water input into the heat neutralizing body within a set temperature range, with the goal of neutralizing residual heat; the residual heat is the difference between the total heat exchange amount when the specific number of first refrigerators operates at optimal power and the output heat of the supercooled water.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of agent computing, in particular to a method and device for controlling operation of a refrigeration system based on digital twin technology. BACKGROUND

[0002] Digital twin technology is a simulation process integrating multi-discipline, multi-physical quantity, multi-scale and multi-probability, which fully utilizes physical models, sensor updates, operation history and other data to complete mapping in a virtual space, so as to reflect the whole life cycle operation process of the corresponding physical system by a virtual model. Among them, all elements such as people, objects and events in the physical world are digitized to reconstruct a corresponding "virtual world" in the network space, thereby forming a pattern of coexistence and integration of the physical world in the physical dimension and the virtual world in the information dimension. This is to create a virtual model for a physical object in a digital way, thereby simulating its behavior in a real environment.

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

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

[0005] The chiller system has certain limits for refrigeration and cooling. If the high-temperature backflow water is higher than 50°, the refrigeration pressure of the refrigerant circulation system is very large, which can easily cause damage to the refrigeration equipment over a long period of time, and the refrigeration effect is also limited for high-temperature water above 50°. Therefore, the existing chiller is generally used for cooling high-temperature water below 50°, and the use range is limited.

[0006] In view of the above problems, relevant personnel propose that the chiller system uses multiple groups of chillers to work cooperatively to maintain the high-temperature water within 50℃, but the multiple groups of chillers working cooperatively can easily lead to high maintenance frequency of the chillers, and since the refrigeration capacity is distributed to multiple groups of chillers working cooperatively, individual chillers can easily run at low power consumption. When the chiller runs at low power consumption, the energy consumption increases, and the internal parts such as the compressor, condenser and evaporator will bear greater load and wear, thereby accelerating the aging and damage of the equipment. SUMMARY

[0007] The 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 supercooled water and a cooling object, the working mode of multiple groups of refrigerators is dynamically adjusted, the number of refrigerators in operation is controlled under the condition of ensuring heat exchange effect, and the refrigerators are prevented from operating in a low-power mode, thereby avoiding the problem that the maintenance frequency of refrigerators is high when multiple groups of refrigerators work together, and reducing the speed of aging and damage of the refrigerators.

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

[0009] In an embodiment, adjusting the number of refrigerators participating in operation and the working mode of the refrigerators on the basis of the first refrigerators with the goal of neutralizing residual heat comprises:

[0010] When the output heat of the supercooled water increases, a target second refrigerator with the shortest historical working time is selected from the second refrigerators to be determined as a third refrigerator for heat exchange with the residual heat;

[0011] According to the influence of the accumulation of the output heat of the supercooled water over time on the controllable heat, the operation of the third refrigerator is controlled; the controllable heat is the heat range for the overall neutralization of supercooled water within the set temperature range.

[0012] In an embodiment, according to the influence of the accumulation of the output heat of the supercooled water over time on the controllable heat, the operation of the third refrigerator is controlled, comprising:

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

[0014] In one embodiment, the method further comprises:

[0015] calculating the single heat exchanged by the refrigerators when running at the optimal power;

[0016] starting the third refrigerator to run at the optimal power when the residual heat rises to the single heat.

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

[0018] detecting the total amount of subcooled water in the heat neutralizer in real time, and calculating the adjustable heat for compensating the fluctuation of the subcooled water heat;

[0019] adjusting the number of refrigerators running and the working mode of the refrigerators based on the first refrigerator to neutralize the residual heat, comprising:

[0020] dynamically adjusting the working mode of the first refrigerator according to the influence of the accumulation of the subcooled water heat over time on the adjustable heat during the process of the specific number of first refrigerators running at the optimal power.

[0021] In one embodiment, the influence of the accumulation of the subcooled water heat over time on the adjustable heat comprises a decrease in the subcooled water heat, and dynamically adjusting the working mode of the first refrigerator according to the influence of the accumulation of the subcooled water heat over time on the adjustable heat during the process of the specific number of first refrigerators running at the optimal power, comprising:

[0022] obtaining the historical working time of each first refrigerator;

[0023] controlling the first refrigeration machine corresponding to the one with the longest historical working time to input a decreased amount of subcooled water when detecting a decrease in the subcooled water heat.

[0024] In one embodiment, the method further comprises:

[0025] In one embodiment, the method further comprises obtaining the specific number, and the obtaining of the specific number comprises:

[0026] calculating the single heat exchanged by the refrigerators when running at the optimal power;

[0027] obtaining the number of second refrigerators allocated to carry the complete single heat of the subcooled water, and determining the specific number as the obtained number.

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

[0029] acquiring a historical working time length of each of the plurality of second refrigerators;

[0030] selecting a specific number of first refrigerators from the plurality of second refrigerators to operate at an optimal power according to the output heat of the supercooled water, comprising:

[0031] arranging the plurality of second refrigerators in an order from small to large according to the corresponding historical working time length, and distributing the supercooled water carrying the unit heat to the second refrigerators arranged before a specific position; the specific position is the same as the specific number;

[0032] determining the second refrigerators receiving the supercooled water carrying the unit heat as the first refrigerators, to control the corresponding first refrigerators in the physical cooling system to operate at the optimal power.

[0033] In an embodiment of the second aspect, a device for controlling operation of a refrigeration system based on digital twin technology is provided, and the device comprises:

[0034] a selection module configured to select a specific number of first refrigerators from a plurality of second refrigerators to operate at an optimal power according to the output heat of the supercooled water after heat exchange with a 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 refrigeration machine and a heat exchange module in the physical cooling system;

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

[0036] The application has the following beneficial effects:

[0037] In an embodiment of the application, according to the heat of the supercooled water after heat exchange with the cooling object, a part of the refrigeration machines are selected to operate at an optimal power, avoiding the situation that a plurality of refrigeration machines operate at a low power due to insufficient heat to be exchanged; if there is a difference between the heat that can be cooled by the supercooled water in the cooling water tank and the heat to be cooled, the difference is neutralized by the supercooled water in the cooling water tank, therefore, the application monitors the heat, temperature, and time of the supercooled water, analyzes the heat that can be neutralized by the supercooled water in the cooling water tank, adjusts the number of refrigeration machines operating, and adjusts the working mode of the refrigeration machines, to maintain the cooling capacity of the supercooled water in the cooling water tank within the range of neutralizing the residual heat, and to measure the cooling capacity of the supercooled water in the cooling water tank by temperature. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of the structure of an example physical cooling system of this application;

[0039] Figure 2 This is a schematic diagram of a cooling system model generated using a digital twin to simulate a physical cooling system, as described in this application.

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

[0041] Figure 4 This is a functional block diagram of a refrigeration system operation control device based on digital twin technology proposed in an embodiment of this application. Detailed Implementation

[0042] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0043] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0044] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0045] The method for controlling operation of a refrigeration system based on digital twinning technology provided by the embodiments of the present application creates a virtual model of an entity cooling system using digital twinning technology to obtain a cooling system model, wherein the modules in the cooling system model correspond one-to-one to different devices of the entity cooling system.

[0046] Figure 1 is a structural schematic diagram of an example entity cooling system according to the present application, as Figure 1 indicated, the entity cooling system includes a cooling object, a shunt module, a plurality of refrigerators, each refrigerator being in communication with a corresponding heat exchange module, a cooling water tank, and a circulating pump. The circulating pump provides power for cooling water circulation.

[0047] The cooling object is a heat generating device that needs to be cooled. The cooling water tank provides subcooled water. The subcooled water flows through the cooling object and exchanges heat with the cooling object. The subcooling heat increases the temperature. The subcooled water after the temperature rise flows into different heat exchange modules. The refrigerators compress refrigerant to cool the subcooled water in the heat exchange modules. The cooled subcooled water flows into the cooling water tank.

[0048] The plurality of refrigerators work simultaneously to improve cooling efficiency. The cooling water tank is also provided. The sufficient subcooled water in the cooling water tank can neutralize the heat of the subcooled water, thereby reducing the number of refrigerators in operation.

[0049] The embodiments of the present application further provide a first detection unit in the cooling water tank to detect the temperature of the cooling water tank. A second detection unit is provided in the channel through which the subcooled water flows from the cooling water tank to the cooling object to detect the temperature and heat carried by the subcooled water flowing into the cooling object. A third detection unit is provided in the channel through which the subcooled water flows from the cooling object to the shunt module to detect the temperature and heat carried by the subcooled water after heat exchange with the cooling object. According to the temperature and heat carried by the subcooled water at the above three nodes, it is analyzed whether the cooling of the subcooled water by the refrigerator is sufficient to meet the heat exchange demand of the subcooled water for the current cooling object.

[0050] The existing technology is prone to high maintenance frequency of the refrigeration machine when multiple refrigeration machines work together, and because the heat generated by the refrigeration object is fluctuating and linearly changing, when multiple refrigeration machines work together to cool the refrigeration object, one of the refrigeration machines is often in a low power state, and the energy consumption of the refrigeration machine increases in the low power state. In view of the above problems, the cooling water tank is arranged in the embodiment of the present application, and the sufficient supercooled water in the cooling water tank can neutralize part of the heat, thereby reducing the number of refrigeration machines in operation. On this basis, the digital twin technology is used to simulate the physical cooling system to obtain a virtual model corresponding to the physical cooling system. The virtual model forms a cooling system model, and the changes of various data in the cooling system model are the same as the changes of various data in the physical cooling system. The cooling system model reasonably allocates multiple refrigeration machines based on the heat exchange demand of the cooling object and the temperature change of the supercooled water in the cooling water tank, so that the working time of the multiple refrigeration machines is equivalent, and the refrigeration machines in operation run at high power.

[0051] Figure 2 is a schematic diagram of a cooling system model generated by simulating a physical cooling system by the digital twin of the present application, as Figure 2 shown, the cooling system model includes a heat neutralizing body, a refrigeration body, and a cooling body; the cooling body corresponds to the cooling object in the physical cooling system; the refrigeration body corresponds to the module composed of the refrigeration machine 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 further includes a first data acquisition body corresponding to a first detection unit, a second data acquisition body corresponding to a second detection unit, and a third data acquisition body corresponding to a third detection unit. The cooling system model further includes a shunt body corresponding to a shunt module, for introducing different amounts of supercooled water into different heat exchange modules according to instructions. The cooling system model further includes a circulation body corresponding to a circulating pump.

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

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

[0054] For example, the data monitored by the third data acquisition body can be collected to obtain the total heat carried by the supercooled water after exchanging heat with the cooling body, and then part of the refrigeration bodies are selected to run according to the amount of total heat, thereby reducing the number of refrigeration bodies in operation, i.e. reducing the number of refrigeration machines in the physical cooling system that are running at the same time, and avoiding the problem that multiple refrigeration machines are prone to high maintenance frequency when working together.

[0055] The cooling body in the cooling system model simulates the heat exchange process of the supercooled water through the cooling object, and therefore the output heat of the supercooled water can be collected through the third data collection body. The output heat of the supercooled water represents the heat that all the working refrigerators need to exchange.

[0056] S302: Based on the first refrigeration body, adjust the number of refrigeration bodies participating in operation and the working mode of the refrigeration bodies to maintain the temperature of the supercooled water in the heat neutralization body within the set temperature range.

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

[0058] By maintaining the temperature of the supercooled water in the heat neutralization body within the set temperature range, the neutralization ability of the cooling water tank for the residual heat is maintained, so that fewer refrigerators can participate in refrigeration work for a certain period of time.

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

[0060] Adjusting the number of refrigeration bodies participating in operation and the working mode of the refrigeration bodies based on the first refrigeration body can include selecting more refrigeration bodies in the second refrigeration body to join the refrigeration operation; adjusting the operation 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, which is established in a digital way, the monitoring and adjustment operation of the physical entity or system can be realized by operating the refrigeration body.

[0062] Therefore, based on steps S301 and S302, the present application selects part of the refrigerators to operate at the optimal power according to the heat exchanged by the supercooled water after cooling the cooling object, avoiding the low-power operation of several refrigerators due to insufficient heat exchange when multiple refrigerators operate simultaneously. If there is a difference between the heat that can be cooled by the part of the refrigerators operating at the optimal power and the heat that needs to be cooled, the difference is neutralized by the supercooled water in the cooling water tank. Therefore, the present application monitors the heat, temperature, and time of the supercooled water, analyzes the heat that can be neutralized by the supercooled water in the cooling water tank, adjusts the number of refrigerators in operation, and adjusts the working mode of the refrigerators to maintain the cooling ability of the supercooled water in the cooling water tank within the range of neutralizing the residual heat, and the cooling ability of the supercooled water in the cooling water tank is measured by temperature.

[0063] The heat generated by the cooling object is dynamically changed, and as time changes, the supercooled water in the cooling water tank neutralizes and the heat increases, the temperature of the water tank increases, and the energy of the supercooled water neutralization heat decreases. Therefore, according to the overall situation of the entity cooling system running, the number of refrigeration bodies and the working mode of the refrigeration bodies are dynamically adjusted according to the entity cooling system model reaction, the number of refrigeration machines working in the entity cooling system and the working mode of the refrigeration machines are adjusted, the number of refrigeration machines running is controlled under the condition of ensuring the heat exchange effect, and the refrigeration machines are prevented from running in a low-power mode.

[0064] The factors affecting whether the supercooled water in the cooling water tank can neutralize the residual heat include: the heat generated by the cooling body corresponding to the cooling object, which is expressed as the required refrigeration capacity in some examples; the temperature of the supercooled water; as the running time of the refrigeration machine increases, the total amount of heat neutralized by the supercooled water in the cooling water tank increases, the temperature of the supercooled water increases, and the heat that can be neutralized decreases.

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

[0066] S3021: Detect the output heat of the supercooled water. The output heat of the supercooled water is the heat increased after the supercooled water exchanges heat with the cooling object, which 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 collection body collects the supercooled water temperature 1, and the third data collection body collects the supercooled water temperature 2.

[0067] S3022: When the output heat of the supercooled water increases, select the target second refrigeration body with the shortest historical working time in the second refrigeration body as the third refrigeration body for heat exchange with the residual heat.

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

[0069] S3023: According to the influence of the cumulative output heat of the supercooled water on the controllable heat with time, control the start of the third refrigeration body to run; the controllable heat is the heat range that the supercooled water neutralizes in the overall supercooled water within the set temperature range.

[0070] The influence of the cumulative output heat of the supercooled water on the controllable heat with time refers to the judgment of whether the output heat of the supercooled water affects the dilution ability of the supercooled water in the cooling water tank.

[0071] In an example of the present application, a certain heat threshold value 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 increases to the set heat threshold value after heat exchange with the cooling object, it indicates that more refrigerators need to work to exchange heat with the supercooled water to maintain the temperature of the supercooled water in the cooling water tank within the set temperature range and maintain the safe operation of the system.

[0072] In another example of the present application, when the output heat of the supercooled water is detected, the difference between the output heat of the supercooled water and the total amount of refrigeration of the existing refrigerators 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 amount of a refrigerator running at the optimal power, a third refrigerator can be selected in the second refrigerator to start the third refrigerator to supplement the refrigeration capacity of the first refrigerator.

[0073] In the present example, the operation of the third refrigerator is controlled according to the influence of the cumulative output heat of the supercooled water on the controllable heat over time, including:

[0074] Calculating the single heat exchanged with the supercooled water when the refrigerator is running at the optimal power;

[0075] The single heat refers to the refrigeration capacity that a single refrigerator can generate when running at the optimal power.

[0076] When the residual heat increases to the single heat, the third refrigerator is started to run at the optimal power.

[0077] In the above-mentioned process, the corresponding refrigerator of the started third refrigerator is still running at the optimal power, further avoiding the low-power operation of the refrigerator.

[0078] When it is detected that the temperature of the supercooled water in the heat neutralization body increases to exceed the maximum value of the set temperature range, the third refrigerator is started to run at the optimal power.

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

[0080] In an example of the present application, it can also be determined whether the output heat of the subcooled water after heat exchange with the cooling object increases to a set heat threshold value. If the output heat of the subcooled water after heat exchange with the cooling object increases to the set heat threshold value, it is determined to increase the operation of the refrigerators. Before the refrigerators are increased in operation, it can also be determined whether the temperature of the subcooled water in the heat neutralizer corresponding to the cooling water tank increases to exceed the maximum value of the set temperature range. If the temperature of the subcooled water in the heat neutralizer increases to exceed the maximum value of the set temperature range, the third refrigerator is started to operate at the optimal power. The number of the third refrigerators can be multiple.

[0081] When the output heat of the subcooled water is detected to increase, the refrigerator with the shortest historical operation time in the second refrigerator is selected as the third refrigerator, and the third refrigerator is operated to ensure that the system refrigeration capacity can adapt to the high heat output of the cooling object, balance the operation time of each refrigerator, limit the maintenance time of each refrigerator to a certain range, and solve the problem of high maintenance frequency of the refrigerator.

[0082] In one of the operation steps S302, step S302 includes sub-steps:

[0083] S302-1: Real-time detection of the total amount of subcooled water in the heat neutralizer, and calculation of the controllable heat for supplementing the heat fluctuation of the subcooled water.

[0084] S302-2: During the operation of the specific number of first refrigerators at the optimal power, the working mode of the first refrigerators is dynamically adjusted according to the influence of the cumulative output heat of the subcooled water on the controllable heat over time.

[0085] The influence of the cumulative output heat of the subcooled water on the controllable heat over time includes a decrease in the output heat of the subcooled water. When the output heat of the subcooled water after heat exchange with the cooling object is detected to decrease, the flow rate in part of the first refrigerators can be selected to decrease.

[0086] Obtain the historical operation time of each first refrigerator;

[0087] When the output heat of the subcooled water is detected to decrease, the input amount of subcooled water into the first refrigerator corresponding to the longest historical operation time is controlled to decrease.

[0088] Alternatively, when the output heat of the subcooled water is detected to decrease, the first refrigerator corresponding to the longest historical operation time is controlled to stop operation.

[0089] When the output heat of the subcooled water is detected to decrease, the number of first refrigerators in operation can be reduced, the operation time length of the refrigerators is reduced, and the maintenance frequency is avoided to be too high.

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

[0091] S3011: calculating the single heat exchanged by the refrigeration body when running at the optimal power with the supercooled water.

[0092] S3012: obtaining the second refrigeration body quantity allocated to the supercooled water carrying the complete single heat, and determining the specific quantity.

[0093] For example, assuming that the single heat, i.e., the heat exchanged by the refrigeration capacity generated by a single refrigeration machine running at the optimal power, is Q2, and the output heat of the supercooled water after heat exchange with the cooling body is Q1, the supercooled water carrying the target supercooled water quantity of Q2 is allocated to the refrigeration machine, and the refrigeration machine allocated with the supercooled water carrying the target supercooled water quantity is the first refrigeration machine.

[0094] An example of the present application further proposes a way of pre-calculating the specific quantity, dividing Q2 by Q1 to obtain an integer value N and a remainder value q, and N is the specific quantity. Then, the first refrigeration machine of quantity N can be pre-selected in the second refrigeration body, and N portions of the supercooled water carrying the target supercooled water quantity of Q2 are allocated to the first refrigeration machine through the corresponding model of the shunt module, while the supercooled water carrying the supercooled water quantity of q is introduced into the refrigeration body, and the first refrigeration machine introduced with the supercooled water carrying the target supercooled water quantity is started to run at the optimal power. The refrigeration body introduced with the supercooled water carrying the supercooled water quantity of q is the third refrigeration body, and the corresponding refrigeration machine of the third refrigeration body does not work. Correspondingly, the refrigeration machine with the longest working history event can be selected as the third refrigeration body, and the supercooled water in the cooling water tank and the heat q.

[0095] If it is detected subsequently that Q1 increases to the set heat threshold value, the third refrigeration body can be started, in particular, when q rises to Q2, the third refrigeration body can be started, and the corresponding refrigeration machine of the third refrigeration body is controlled to run at the optimal power.

[0096] If it is detected subsequently that Q1 decreases, in particular, when the cooling water flow rate of the cooling water corresponding to the heat exchange module with the refrigeration capacity of q decreases to zero, the first refrigeration machine with the longest cumulative historical working time is selected, and the corresponding cooling water flow rate is controlled to decrease, so as to ensure that the cumulative working time of each refrigeration machine is similar.

[0097] If it is detected subsequently that the temperature of the cooling water tank is greater than the maximum value of the set temperature range, the refrigeration machine introduced with the cooling water with the refrigeration capacity of q is controlled to start working, so as to reduce the corresponding cooling water temperature and enter the cooling water tank to reduce the temperature of the cooling water tank, and the temperature in the cooling water tank is fine-tuned, so as to control the temperature of the cooling water tank within the pre-set temperature range, so that the refrigeration effect on the refrigeration object is more stable, and the energy efficiency is improved.

[0098] The target supercooled water quantity carrying Q2 can be calculated by the following formula (1):

[0099]

[0100] Where Q takes Q2, the calculation is the amount of subcooled water carrying Q2, and where Q takes Q1, the calculation is the amount of subcooled water carrying Q1. is the mass flow rate of cooling water (unit: kilogram per second, kg / s), that is, the mass of fluid passing through a certain cross section per unit time. p is the specific heat capacity at constant pressure of cooling water (unit: joule per kilogram degree Celsius), and ΔT is the temperature difference between the current temperature of cooling water and the required temperature after cooling (unit: degree Celsius, ℃ or Kelvin K).

[0101] The embodiments of the present application also provide that the first refrigerators can be selected according to the historical working time of the second refrigerators.

[0102] The method further comprises:

[0103] Obtaining the historical working time length of each second refrigerating body in the plurality of second refrigerating bodies;

[0104] According to the subcooled water output heat, selecting a specific number of first refrigerators from the plurality of second refrigerators to operate at an optimal power, comprising:

[0105] Arranging the plurality of second refrigerators in order of the corresponding historical working time length from small to large, and distributing the subcooled water carrying the single heat to the second refrigerators arranged before a certain position; the certain position is the same as the value of the specific number;

[0106] Determining that the second refrigerating body receiving the subcooled water corresponding to the single heat is the first refrigerating body, and controlling the first refrigerating body to operate at the optimal power in the corresponding first refrigerating body in the physical cooling system.

[0107] For example, divide Q1 by Q2 to get an integer value N and a remainder value q, and select N first refrigerators in the second refrigerators in order of the corresponding historical working time length from small to large, and pass the target subcooled water carrying Q2 into the N first refrigerators, and start the N first refrigerators to operate at the optimal power, so as to ensure that the working time of the corresponding refrigerators of the plurality of refrigerators is balanced.

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

[0109] The selection module 41 is configured to select a specific number of first refrigerators from a plurality of second refrigerators to operate at an optimal power according to an output heat of the supercooled water after heat exchange with the cooling body, wherein the cooling body corresponds to a cooling object in the physical cooling system, and the refrigerator corresponds to a module composed of a refrigerator and a heat exchange module in the physical cooling system.

[0110] The adjustment module 42 is configured to adjust the number of refrigerators participating in operation and the working mode of the refrigerators on the basis of the first refrigerators to maintain the temperature of the supercooled water in the heat neutralization body within a set temperature range, with the goal of neutralizing the residual heat, wherein the residual heat is a difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the supercooled water.

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

[0112] Optionally, the adjustment module comprises:

[0113] The selection sub-module is configured to select a target second refrigerator with the shortest historical working time from the second refrigerators as a third refrigerator for heat exchange with the residual heat when the output heat of the supercooled water increases.

[0114] The control sub-module is configured to control the third refrigerator to start operating according to an influence of the output heat of the supercooled water accumulated over time on the adjustable heat, wherein the adjustable heat is a heat range for maintaining the overall neutralization of the supercooled water within the set temperature range.

[0115] Optionally, the first control sub-module is specifically configured to start the third refrigerator to operate at the optimal power when it is detected that the temperature of the supercooled water in the heat neutralization body increases to exceed a maximum value of the set temperature range.

[0116] Optionally, the first control sub-module is specifically configured to calculate a single-body heat exchanged by the refrigerator when the refrigerator operates at the optimal power.

[0117] The third refrigerator is started to operate at the optimal power when the residual heat increases to the single-body heat.

[0118] Optionally, the device further comprises:

[0119] The calculation module is configured to detect the total amount of supercooled water in the heat neutralization body in real time and calculate the adjustable heat for supplementing the fluctuation of the supercooled water heat.

[0120] The adjusting module comprises a first adjusting submodule, configured to dynamically adjust the working mode of the first refrigeration body according to the influence of the time accumulation of the supercooled water output heat on the controllable heat during the process that the specific number of first refrigeration bodies operate at the optimal power.

[0121] Optionally, the influence of the time accumulation of the supercooled water output heat on the controllable heat comprises a decrease of the supercooled water output heat, and the adjusting module comprises:

[0122] a time detecting submodule, configured to acquire the historical working time of each first refrigeration body;

[0123] a first adjusting submodule, configured to control the first refrigeration machine corresponding to the one with the longest historical working time to input a decreased amount of supercooled water when the decrease of the supercooled water output heat is detected.

[0124] a second control submodule, configured to control the first refrigeration machine corresponding to the one with the longest historical working time to stop operating when the decrease of the supercooled water output heat is detected.

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

[0126] Optionally, the selecting module comprises:

[0127] a calculating submodule, configured to calculate the single heat exchanged with the supercooled water when the refrigeration body operates at the optimal power;

[0128] a distributing submodule, configured to obtain the number of second refrigeration bodies that distribute the supercooled water carrying the complete single heat, and determine the number as the specific number.

[0129] Optionally, the device further comprises:

[0130] a time detecting module, configured to acquire the historical working time length of each second refrigeration body in the plurality of second refrigeration bodies;

[0131] The selecting module is specifically configured to arrange the plurality of second refrigeration bodies in an order from small to large according to the corresponding historical working time length, distribute the supercooled water carrying the single heat to the second refrigeration bodies arranged before a specific position; and the specific position is the same as the specific number.

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

[0133] As to each means described in the various embodiments described above, it will be understood that each means is capable of being implemented by hardware, software, or a combination of hardware and software. For example, as to each means described in the various embodiments described above, it will be understood that each means is capable of being implemented by a processor executing a software program, or by a circuit, or by a combination of a processor executing a software program and a circuit. As to each means described in the various embodiments described above, it will also be understood that each means is capable of being implemented by a chip, or by a chip module, or by a combination of a chip and a chip module. As to each means described in the various embodiments described above, it will also be understood that each means is capable of being implemented by an electronic terminal device, or by a combination of electronic terminal devices.

[0134] In an embodiment of the present application, a computer readable storage medium is provided. The storage medium stores a program. The stored program includes instructions that are loadable into and executable by a processor to perform the method of any of the embodiments described above.

[0135] Those skilled in the art can understand that all or part of the functions of the various methods in the above embodiments can be implemented by hardware or by a computer program. When all or part of the functions in the above embodiments are implemented by a computer program, the program can be stored in a computer readable storage medium, which can include read-only memory, random access memory, magnetic disk, optical disk, hard disk, etc. The above functions are implemented by executing the program by a computer. For example, the program is stored in the memory of a device, and when the program in the memory is executed by a processor, the above functions are implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program can also be stored in a server, another computer, a disk, an optical disk, a flash disk, a mobile hard disk, etc. The program is downloaded or copied into the memory of a local device, or the system of the local device is updated, and when the program in the memory is executed by a processor, the above functions are implemented.

[0136] The above describes the present application with specific examples, which is only used to help understand the present application, and does not limit the present application. According to the idea of the present application, a person skilled in the art can make some simple deductions, modifications or replacements.

Claims

1. A method for operating control of a refrigeration system based on digital twin technology, characterized by, The application is applied to an electronic device for operation monitoring and control of an entity cooling system through a cooling system model, the cooling system model being a digital model simulated by digital twinning technology and established for the entity cooling system, the cooling system model including a heat neutralizer corresponding to a subcooled water tank in the entity cooling system, and the method comprises: selecting a specific number of first refrigerators from a plurality of second refrigerators to operate at an optimal power according to an output heat of the subcooled water after heat exchange with the cooling body, the cooling body corresponding to a cooling object in the entity cooling system, and the refrigerator corresponding to a module composed of a refrigerator and a heat exchange module in the entity cooling system; adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; The method further comprises: detecting the total amount of subcooled water in the heat neutralizer in real time, and calculating an adjustable heat for supplementing the heat fluctuation of the subcooled water; adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; The method further comprises: detecting the total amount of subcooled water in the heat neutralizer in real time, and calculating an adjustable heat for supplementing the heat fluctuation of the subcooled water; adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; The method further comprises: acquiring the historical working time of each first refrigerator; 2. The method of claim 1, wherein, when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to input a reduced amount of subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to stop running. adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; 3. The method of claim 2, wherein, when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to input a reduced amount of subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to stop running. adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to input a reduced amount of subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to stop running. adjusting the number of refrigerators participating in operation and the working mode of the refrigerator on the basis of the first refrigerator to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range, the residual heat being the difference between the total heat exchange amount of the specific number of first refrigerators operating at the optimal power and the output heat of the subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to input a reduced amount of subcooled water; when the output heat of the subcooled water is detected to be reduced, controlling the first refrigerating refrigerator corresponding to the longest historical working time to stop running.

4. The method of claim 2, wherein, Based on the effect of the accumulated heat output from the subcooled water over time on the adjustable heat, the operation of the third cooling element is controlled, including: Calculate the heat exchanged between the cooler and subcooled water when the cooler is operating at its optimal power. When the remaining heat rises to the level of the unit heat, the third cooler is activated to operate at the optimal power.

5. The method of claim 1, wherein, The method further includes obtaining the specific quantity; obtaining the specific quantity includes: Calculate the heat exchanged between the cooler and subcooled water when the cooler is operating at its optimal power. The number of second coolers allocated to the subcooled water carrying the full heat of the unit is determined as the specific number.

6. The method of claim 5, wherein, The method further includes: Obtain the historical operating time length of each of the plurality of second coolers; Based on the heat output of the subcooled water, a specific number of first coolers are selected from multiple second coolers to operate at optimal power, including: The plurality of second coolers are arranged in ascending order of their corresponding historical working time lengths, and the subcooled water carrying the heat of the individual unit is allocated to the second cooler arranged before a specific order; the specific order is the same as a specific number of values. The second cooler that receives the heat from the unit corresponding to the subcooled water is identified as the first cooler, so as to control the first cooler in the physical cooling system to operate at the optimal power.

7. A digital-twin technology-based refrigeration system operation control device for implementing the method according to any one of claims 1 to 6, characterized in that, The device is installed in an electronic device that monitors and controls the operation of a physical cooling system using a digital cooling system model. This model is a digital representation of the physical cooling system, created using digital twin technology. The digital model includes a heat neutralizer corresponding to the subcooled water tank in the physical cooling system. The device includes: The selection module is used to select a specific number of first coolers from a plurality of second coolers to operate at optimal power based on the output heat after the subcooled water exchanges heat with the cooling body; the cooling body corresponds to the object being cooled in the physical cooling system; the cooler corresponds to the module composed of the refrigerator and the heat exchange module in the physical cooling system; The adjustment module is used to adjust the number of participating coolers and the working mode of the coolers based on the first cooler, with the goal of neutralizing the remaining heat, so as to maintain the temperature of the subcooled water input into the heat neutralizer within a set temperature range; the remaining heat is the difference between the total heat exchange of the specific number of first coolers running at optimal power and the heat output of the subcooled water.

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