A control method and system for preventing surge of cold storage host of cold storage air conditioning system

Abstract

The present invention belongs to the technical field of refrigeration equipment, and specifically provides a control method for preventing surge of a cold storage host of a cold storage air-conditioning system, including obtaining historical operation data of the cold storage system, the historical operation data including time points when surge occurred in several cold storage systems, extracting time points when surge occurred in several cold storage systems for preprocessing, and inputting them into a trained model, integrating the time points into surge occurrence time periods through the trained model, and marking them as key time periods; obtaining real-time operation parameters of the cold storage system, and sending an adjustment signal to an adjustment module when the real-time time for obtaining the real-time operation parameters is within the marked key time period, sending the adjustment signal to the adjustment module, the adjustment module receiving the adjustment signal and sending a control signal to the cold storage host, and the adjustment module controlling the cold storage host in operation to transfer load to the cold storage host in non-operation, so as to avoid surge caused by unstable operation of the compressor.

Description

Technical Field

[0001] The present invention belongs to the technical field of refrigeration equipment, and in particular relates to a control method and system for preventing surge of a cold storage host of a cold storage air conditioning system. Background Art

[0002] In the cold storage / refrigeration air conditioning system, the compressor in the cold storage host is a key component, which is responsible for compressing the refrigerant during the cold storage stage and discharging the heat to the outside, thereby realizing the low-temperature storage of the refrigerant. At the end of the cold storage, the amount of refrigerant in the system is large and the load of the evaporator is relatively small, which may cause the working point of the compressor to enter the unstable area, thereby causing surge.

[0003] Surge is an unstable operating state that may occur in the compressor of the cold storage / refrigeration air conditioning system. Specifically, surge refers to the fluctuation of the operating state of the compressor, which leads to the decline of system performance, accompanied by the phenomenon of increased noise and vibration. Surge will not only reduce the efficiency and reliability of the air conditioning system, but also may cause damage to the compressor and other system components.

[0004] Based on this, the present invention provides a control method and system for preventing surge of a cold storage host of a cold storage air conditioning system to solve the above-mentioned problem. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a control method and system for preventing surge of a cold storage host of a cold storage air conditioning system, so as to solve the problems in the prior art.

[0006] One embodiment of the present invention provides a control method for preventing surge of a cold storage host of a cold storage air conditioning system, comprising the following steps:

[0007] Acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surge occurred in several cold storage systems;

[0008] Extract several time points when surge occurs in the cold storage system for preprocessing;

[0009] Input the preprocessed time points of surge occurrence of the cold storage system into the trained model, integrate the time points into the surge occurrence time period through the trained model, and mark them as key time periods;

[0010] Acquire real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module;

[0011] When the real-time time for obtaining the real-time operating parameters is within the marked key time period, an adjustment signal is sent to the adjustment module, the adjustment module receives the adjustment signal and sends a control signal to the cold storage host, and the adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state.

[0012] By adopting the above technical solution, since surge occurs in the cold storage system due to unstable operation of the compressor, when the operating frequency of the compressor is too high, it will cause surge in the cold storage system. At the same time, since most cold storage air-conditioning systems use the lower electricity price period at night to store cold energy for use during peak hours during the day, at the end of the cold storage process, it is easy to cause the compressor to operate at a high frequency and with a large load due to the large amount of refrigerant and the relatively small load on the evaporator, causing the working point to enter an unstable area, thereby causing surge. Therefore, by acquiring the historical operation data of the cold storage system, the concentrated time points of several times when the cold storage system surged in the historical operation data are obtained, and the acquired historical time points of surge are integrated to obtain the key time period, through which it can be determined in which time period the cold storage system is most likely to surge when it is running; the real-time operation parameters of the cold storage system are obtained. If the real-time time of obtaining the operation parameters is within the key time period, part of the load of the cold storage host in operation is transferred to the cold storage host in non-operation through the adjustment module, thereby avoiding the problem of surge caused by unstable operation. Through load transfer, the entire system can be maintained at the original cooling demand; if the operating load of the cold storage host is simply reduced, the performance of the entire system may be reduced, making the system operation unable to meet the current cooling demand.

[0013] In one embodiment, the step of inputting the preprocessed time points when the cold storage system surges for several times into the trained model, integrating the time points into the surge occurrence time period through the trained model, and marking them as key time periods is specifically as follows:

[0014] The time points outside the preset time range are removed from the time points when surge occurs in the cold storage system for several times, the time points within the preset time range are extracted and integrated into the surge occurrence time period, and the integrated surge occurrence time period is marked as the key time period.

[0015] By adopting the above technical solution, the preset time is the time period with the most surge occurrences, and the time points at which several surges occurred in the cold storage system are obtained are processed, and the time points concentrated in the preset time range when the surges occur are integrated, and other scattered time points are removed. For example, the time points when surges occur most concentratedly in the historical data are in the time period of 02:00-04:00 in the morning, and the remaining time points are scattered time. The time when surges occur in the time period of 02:00-04:00 in the morning is integrated into a time period, and the time period is marked as a key time period, and other scattered time points are removed, so that the real-time operating parameters of the cold storage system in this time period can be focused.

[0016] In one embodiment, the historical operation data also includes operation parameters of several times when surge occurred in the cold storage system. After the step of obtaining the historical operation data of the cold storage system, the following steps are also included:

[0017] Extract the operating parameters of several cold storage system surges for preprocessing;

[0018] The pre-processed operating parameters of several cold storage system surges are input into the trained model, and the operating parameters are converted into surge occurrence parameters through the trained model.

[0019] By adopting the above technical scheme, the historical operation data of the cold storage system is obtained to obtain the operating parameters of several times when the cold storage system surged in the historical operation data, and the operating parameters are converted into surge occurrence parameters through the trained model. The surge occurrence parameters are the average values ​​of the operating parameters when the cold storage system surged several times. The surge occurrence parameters can be used to monitor whether the operating parameters of the cold storage system are close to the surge occurrence parameters during operation, so as to make corresponding adjustments in time to prevent the occurrence of surge.

[0020] In one embodiment, when the real-time time for obtaining the real-time operating parameters is within the marked key time period, an adjustment signal is sent to the adjustment module, the adjustment module receives the adjustment signal and sends a control signal to the cold storage host, and the adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state, specifically including:

[0021] When the real-time time of the acquired real-time operating parameter is within the marked key time period, the real-time operating parameter is compared with the surge occurrence parameter;

[0022] Based on the comparison results, analyze and determine whether the real-time operating parameters of several cold storage hosts in operation are within the preset threshold range of surge occurrence parameters;

[0023] If the real-time operating parameters of the plurality of cold storage hosts in operation are all within the preset threshold range of the surge occurrence parameter, a frequency reduction regulating signal is sent to the regulating modules connected to the plurality of cold storage hosts in operation, and an operation start signal and a frequency increase regulating signal are sent to the regulating modules connected to the cold storage hosts in non-operation;

[0024] The regulating modules connected to the plurality of cold storage hosts in operation receive the regulating signal, and the regulating modules control the operation frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter;

[0025] The regulating module connected to the cold storage host in a non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the start of the cold storage host and increases the operating frequency value of the connected cold storage host to complete the load transfer; wherein the operating frequency value increased by the cold storage host in a non-operating state is the sum of the reduced values ​​of several cold storage hosts in an operating state.

[0026] By adopting the above technical solution, when the real-time time of the real-time operating parameters of the cold storage system is within the marked key time period, the real-time time is Beijing time, which indicates that the current cold storage system may experience surge; the surge occurrence parameter is regarded as a surge occurrence extreme point, and the preset threshold range of the surge occurrence parameter is a numerical range before the extreme point. When the real-time time of the real-time operating parameters of the cold storage system is within the marked key time period, the obtained real-time operating parameters are analyzed and compared with the surge occurrence parameters to analyze whether the real-time operating parameters of the cold storage host within the key time period are within the preset threshold range of the surge occurrence parameters, so as to determine whether there is currently a surge occurrence. The possibility of surge; if the real-time operating parameters of all the cold storage hosts in operation are within the preset threshold range of the surge parameters, it means that the cold storage system may surge. In order to prevent the operating parameters of the cold storage system from continuing to increase and reaching the peak of surge, the operating frequency of all the cold storage hosts in operation is reduced to less than the preset threshold of the surge parameters through the adjustment module. At the same time, the cold storage hosts in non-operation are started through the adjustment module, and the corresponding operating frequency is increased. The load transfer is completed through the transfer of the operating frequency, which avoids the problem of surge caused by unstable operation. At the same time, the load transfer can maintain the original cooling demand of the entire system.

[0027] In one embodiment, after the step of analyzing and determining whether the real-time operating parameters of a plurality of cold storage hosts in operation are within a preset threshold range of surge occurrence parameters based on the comparison results, the following steps are also included:

[0028] If only the real-time operating parameters of one or more cold storage hosts in operation are within the preset threshold range of the surge occurrence parameter, obtaining the excess sum value of the real-time operating parameters of one or more cold storage hosts in operation within the preset threshold range of the surge occurrence parameter;

[0029] Compare the obtained excess sum value with the threshold value that can be increased by the remaining one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold value of the surge occurrence parameter;

[0030] Based on the comparison result, if the obtained excess sum value is less than the increaseable threshold, a frequency reduction adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold of the surge occurrence parameter, and a frequency increase adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold of the surge occurrence parameter;

[0031] Based on the comparison results, if the obtained excess total value is greater than the increaseable threshold, a frequency reduction adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operating parameters are greater than the preset threshold of the surge occurrence parameter, and an operation start signal and a frequency increase adjustment signal are sent to the adjustment module connected to the cold storage host that is in a non-operating state.

[0032] By adopting the above technical scheme, it is further analyzed whether the real-time operating parameters of the cold storage host in the key time period are within the preset threshold range of the surge occurrence parameters; by comparing the excess total value with the increaseable threshold, the load transfer method is determined. If the excess total value is less than the increaseable threshold, there is no need to start the cold storage host in the non-operating state, and the load is transferred between the cold storage hosts in the operating state. This can reduce energy consumption and ensure that the entire system is maintained at the original cooling demand; if the excess total value is greater than the increaseable threshold, it is necessary to send an operation start signal and a frequency increase adjustment signal to the adjustment module connected to the cold storage host in the non-operating state, and transfer the load from the cold storage host in the operating state to the cold storage host in the non-operating state. This can avoid the occurrence of surge and ensure that the entire system is maintained at the original cooling demand.

[0033] In one of the embodiments, based on the comparison result, if the obtained excess sum value is less than the threshold value that can be increased, after the step of sending a frequency reduction adjustment signal to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold value of the surge occurrence parameter, and sending a frequency increase adjustment signal to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold value of the surge occurrence parameter, the following steps are performed:

[0034] The regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter;

[0035] The regulating modules connected to the other cold storage hosts in operation receive the regulating signals, and the regulating modules control the operating frequency values ​​of the connected cold storage hosts to increase, thereby completing the load transfer;

[0036] Among them, the increased operating frequency values ​​of the remaining cold storage hosts in operation are the average value of the sum of the reduced values ​​of one or more cold storage hosts in operation.

[0037] By adopting the above technical solution, when the total value exceeded is less than the increaseable threshold, there is no need to start the cold storage host in the non-operating state, and the operating frequency of the cold storage host whose real-time operating parameters are within the preset threshold range of the surge occurrence parameter is reduced to less than the preset threshold of the surge occurrence parameter through the adjustment module, and then the operating frequency of the remaining cold storage hosts whose real-time operating parameters have not entered the preset threshold range of the surge occurrence parameter is increased by the adjustment module accordingly; load transfer is performed between the cold storage hosts in the operating state, thereby avoiding the occurrence of surge, reducing energy consumption, and ensuring that the entire system maintains the original cooling demand.

[0038] In one of the embodiments, based on the comparison result, if the obtained excess sum value is greater than the threshold value that can be increased, after the step of sending a frequency reduction adjustment signal to the adjustment modules connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold value of the surge occurrence parameter, and sending an operation start signal and a frequency increase adjustment signal to the adjustment modules connected to the cold storage hosts that are not in operation, the following steps are performed:

[0039] The regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter;

[0040] The regulating module connected to the cold storage host in a non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the cold storage host to start, and increases the operating frequency value of the connected cold storage host, thereby completing the load transfer;

[0041] The increased operating frequency value of the cold storage host in a non-operating state is the sum of the reduced values ​​of one or more cold storage hosts in an operating state.

[0042] By adopting the above technical solution, when the total value exceeds the increaseable threshold, it is necessary to transfer the load to the cold storage host in the non-operating state, and reduce the operating frequency of the cold storage host whose real-time operating parameters are within the preset threshold range of the surge occurrence parameter to less than the preset threshold of the surge occurrence parameter through the adjustment module, and then start the cold storage host in the non-operating state through the adjustment module, and increase the corresponding operating frequency. The load transfer is completed through the transfer of the operating frequency, avoiding the problem of surge caused by unstable operation. At the same time, through load transfer, the entire system can be maintained at the original cooling demand.

[0043] The present application also relates to a control system for preventing surge of a cold storage host of a cold storage air conditioning system, comprising:

[0044] A first data acquisition module is used to acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surges occurred in a number of cold storage systems;

[0045] A data preprocessing module, used to extract several time points when surge occurs in the cold storage system for preprocessing;

[0046] A time marking module is used to input the pre-processed time points when the cold storage system surges into the trained model, integrate the time points into the surge occurrence time period through the trained model, and mark them as key time periods;

[0047] A second data acquisition module is used to acquire real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module;

[0048] The load regulation control module is used to send an adjustment signal to the adjustment module when the real-time time for obtaining the real-time operating parameters is within the marked key time period. The adjustment module receives the adjustment signal and sends a control signal to the cold storage host. The adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state.

[0049] By adopting the above technical solution, since surge occurs in the cold storage system due to unstable operation of the compressor, when the operating frequency of the compressor is too high, it will cause surge in the cold storage system. At the same time, since most cold storage air-conditioning systems use the lower electricity price period at night to store cold energy for use during peak hours during the day, at the end of the cold storage process, it is easy to cause the compressor to operate at a high frequency and with a large load due to the large amount of refrigerant and the relatively small load on the evaporator, causing the working point to enter an unstable area, thereby causing surge. Therefore, by acquiring the historical operation data of the cold storage system, the concentrated time points of several times when the cold storage system surged in the historical operation data are obtained, and the acquired historical time points of surge are integrated to obtain the key time period, through which it can be determined in which time period the cold storage system is most likely to surge when it is running; the real-time operation parameters of the cold storage system are obtained. If the real-time time of obtaining the operation parameters is within the key time period, part of the load of the cold storage host in operation is transferred to the cold storage host in non-operation through the adjustment module, thereby avoiding the problem of surge caused by unstable operation. Through load transfer, the entire system can be maintained at the original cooling demand; if the operating load of the cold storage host is simply reduced, the performance of the entire system may be reduced, making the system operation unable to meet the current cooling demand.

[0050] The present application also relates to a computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned control system for preventing surge of the cold storage host of a cold storage air-conditioning system when executing the computer program.

[0051] The present application also relates to a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the control system for preventing the cold storage host of the cold storage air-conditioning system from surging are implemented.

[0052] The control method and system for preventing surge of the cold storage host of the cold storage air conditioning system provided in the above embodiments have the following beneficial effects:

[0053] 1. By acquiring the historical operation data of the cold storage system, the concentrated time points when the cold storage system surged are obtained in the historical operation data, and the acquired historical time points of surge are integrated to obtain the key time period, through which it can be judged in which time period the cold storage system is most likely to surge when it is running; the real-time operation parameters of the cold storage system are obtained. If the real-time time of obtaining the operation parameters is within the key time period, part of the load of the cold storage host in operation is transferred to the cold storage host in non-operation through the adjustment module, avoiding the problem of surge caused by unstable operation. Through load transfer, the entire system can be maintained at the original cooling demand; if the operating load of the cold storage host is simply reduced, the performance of the entire system may be reduced, making the system operation unable to meet the current cooling demand.

[0054] 2. By acquiring the historical operation data of the cold storage system, the operating parameters of several times when the cold storage system surged in the historical operation data are obtained, and the operating parameters are converted into surge occurrence parameters through the trained model. The surge occurrence parameters are the average values ​​of the operating parameters when the cold storage system surged several times. The surge occurrence parameters can be used to monitor whether the operating parameters of the cold storage system are close to the surge occurrence parameters during operation, so as to make corresponding adjustments in time to prevent the occurrence of surge.

[0055] 3. The operating frequency of all the cold storage hosts in operation is reduced to a value less than the preset threshold of the surge parameter through the adjustment module. At the same time, the cold storage hosts in non-operation are started through the adjustment module, and the corresponding operating frequency is increased. The load transfer is completed through the transfer of the operating frequency, avoiding the problem of surge caused by unstable operation. At the same time, the load transfer can maintain the original cooling demand of the entire system.

[0056] 4. The load transfer method is determined by comparing the excess total value with the increaseable threshold. If the excess total value is less than the increaseable threshold, there is no need to start the cold storage host in the non-operating state, and the load is transferred between the cold storage hosts in the operating state. This can reduce energy consumption and ensure that the entire system maintains the original cooling demand; if the excess total value is greater than the increaseable threshold, it is necessary to send an operation start signal and a frequency increase adjustment signal to the adjustment module connected to the cold storage host in the non-operating state, and transfer the load from the cold storage host in the operating state to the cold storage host in the non-operating state. This can avoid the occurrence of surge and ensure that the entire system maintains the original cooling demand. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0058] Figure 1 A flow chart of a control method for preventing surge of a cold storage host of a cold storage air conditioning system provided by an embodiment of the present invention;

[0059] Figure 2 A functional block diagram of a computer device provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0061] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0062] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0063] Reference Figure 1 One embodiment of the present invention provides a control method for preventing surge of a cold storage host of a cold storage air conditioning system, comprising the following steps:

[0064] S100. Acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surge occurred in the cold storage system for several times; wherein the historical operation data also includes operation parameters when surge occurred in the cold storage system for several times.

[0065] In this embodiment, the cold storage system is connected via a control terminal, which is an industrial control computer. The control terminal is used to obtain historical operating data of the cold storage system. The historical operating data includes the time points and operating parameters of several times when surge occurred in the cold storage system. The historical operating data of the cold storage system is obtained as the basis for controlling the cold storage system to prevent surge.

[0066] S200, extracting several time points when surge occurs in the cold storage system for preprocessing; wherein, it also includes extracting several operating parameters when surge occurs in the cold storage system for preprocessing.

[0067] In this embodiment, preprocessing includes data cleaning (removing outliers), missing value processing (such as interpolation or deletion) and data normalization (such as standardization or normalization). The acquired data is cleaned, missing value processed and normalized to ensure data quality, ensure that the time point data is accurate and arranged in chronological order, and ensure that the data is the operating parameters when the cold storage system surges, thereby helping to improve the performance and accuracy of the model.

[0068] S300, inputting the time points when surge occurs in the cold storage system for several pre-processed times into the trained model, integrating the time points into the surge occurrence time period through the trained model, and marking them as key time periods; wherein, it also includes inputting the operating parameters when surge occurs in the cold storage system for several pre-processed times into the trained model, and converting the operating parameters into surge occurrence parameters through the trained model.

[0069] The marking of key time periods is specifically as follows: the time points outside the preset time range are removed from the time points at which the cold storage system surges for several times, the time points within the preset time range are extracted and integrated into several surge time periods, and the time period with the most surge occurrences among the several surge time periods is marked as the key time period. The preset time is the time period with the most surge occurrences, the time points at which the cold storage system surges for several times are processed, the time points concentrated within the preset time range when the surge occurs are integrated, and other scattered time points are removed. For example, the most concentrated time points when surges occur in the historical data are within the time period of 02:00 to 04:00 in the morning, and the rest of the time points are scattered time points. The time points where surges occur within the time period of 02:00 to 04:00 in the morning are integrated into a time period, and the time period is marked as the key time period, and other scattered time points are removed, so that the real-time operating parameters of the cold storage system within the time period can be focused on.

[0070] In this embodiment, the time points and operating parameters of several surges in the cold storage system that have been preprocessed are input into the trained model. The trained model can integrate the time points into time periods, and the time period with the most surges can be marked as a key time period, and the operating parameters can be calculated to obtain the average value of the operating parameters when the cold storage system surged in history, so as to determine where the surge occurred in the cold storage system. When training the model, it can be specifically collected by collecting annotated sensor data sets, including the original readings of the sensors and the corresponding operating data, and saved in the corresponding database, so that it can be quickly identified and called when the time points and operating parameters when the cold storage system surges are received.

[0071] S400, obtaining real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module;

[0072] In this embodiment, the cold storage system is composed of a cold storage host in a non-operating state and four cold storage hosts in an operating state. The number of cold storage hosts in an operating state can be adjusted according to demand. Each cold storage host is connected to a regulating module, which is a frequency converter. The regulating module controls the adjustment and start and stop of the operating frequency of the cold storage host. The control terminal is used to obtain real-time operating data of the cold storage host in an operating state in the cold storage system to determine whether the surge occurrence point has been reached.

[0073] S500: When the real-time time of obtaining the real-time operating parameters is within the marked key time period, an adjustment signal is sent to the adjustment module, the adjustment module receives the adjustment signal and sends a control signal to the cold storage host, and the adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state. Step S500 is specifically as follows:

[0074] S510, when the real-time time of the acquired real-time operating parameter is within the marked key time period, comparing the real-time operating parameter with the surge occurrence parameter;

[0075] S520, based on the comparison result, analyzing and determining whether the real-time operating parameters of the plurality of cold storage hosts in operation are within a preset threshold range of the surge occurrence parameter;

[0076] S530: If the real-time operating parameters of the plurality of cold storage hosts in operation are all within the preset threshold range of the surge occurrence parameter, a frequency reduction regulating signal is sent to the regulating modules connected to the plurality of cold storage hosts in operation, and an operation start signal and a frequency increase regulating signal are sent to the regulating modules connected to the cold storage hosts in non-operation;

[0077] S531, the regulating modules connected to the plurality of cold storage hosts in operation receive the regulating signal, and the regulating modules control the operating frequency values ​​of the connected cold storage hosts to be reduced to a value less than a preset threshold value of the surge occurrence parameter;

[0078] S532. The regulating module connected to the cold storage host in a non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the start of the cold storage host and increases the operating frequency value of the connected cold storage host to complete the load transfer; wherein, the operating frequency value increased by the cold storage host in a non-operating state is the sum of the reduced values ​​of several cold storage hosts in an operating state.

[0079] In this embodiment, when the real-time time (Beijing time) when the control terminal obtains the real-time operating parameters of the cold storage system is within the marked key time period (02:00-04:00), it means that surge may occur in the current cold storage system. The real-time operating parameters of the cold storage system are the operating frequency of the cold storage host. The real-time operating parameters are compared with the surge occurrence parameters using a data analysis algorithm to analyze whether the real-time operating parameters of all the cold storage hosts in operation within the key time period are within the preset threshold range of the surge occurrence parameters, so as to determine whether there is a possibility of surge occurring at present. The surge occurrence parameter is regarded as a surge occurrence extreme point, and the preset threshold range of the surge occurrence parameter is a numerical range before the extreme point. For example, if the surge occurrence parameter is 90Hz, the preset threshold range of the surge occurrence parameter is 70-89Hz. When the real-time operating parameters of all the cold storage hosts in operation are within this range, it means that the cold storage system may surge. In order to prevent the operating parameters of the cold storage system from continuously increasing and reaching the surge occurrence extreme point, the control terminal sends a frequency reduction adjustment signal to the adjustment module connected to the cold storage host in operation, and at the same time sends an operation start signal and a frequency increase adjustment signal to the adjustment module connected to the cold storage host in non-operation state. The adjustment module connected to the cold storage host in operation receives the adjustment signal. And the operating frequency value of the connected cold storage host is reduced to a preset threshold value less than the surge occurrence parameter. At the same time, the regulating module connected to the cold storage host in the non-operating state receives the operation start signal and the regulating signal, starts the cold storage host in the non-operating state, and increases the corresponding operating frequency. At this time, the cold storage host in the non-operating state becomes the operating state; for example, if the operating frequencies of the four cold storage hosts in the operating state are all reduced by 10Hz, the cold storage host in the non-operating state is started, and the regulating module adjusts the operating frequency of the cold storage host in the non-operating state to 40Hz. Through the transfer of the operating frequency, the load transfer is completed, avoiding the problem of surge caused by unstable operation. At the same time, through load transfer, the entire system can be maintained at the original cooling demand.

[0080] In one embodiment, after step S520, the following steps are also included:

[0081] S540, if only the real-time operating parameters of one or more cold storage hosts in operation are within the preset threshold range of the surge occurrence parameter, obtaining a sum value of the real-time operating parameters of one or more cold storage hosts in operation that are within the preset threshold range of the surge occurrence parameter;

[0082] S550, comparing the obtained excess sum value with the threshold value that can be increased by the remaining one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold value of the surge occurrence parameter;

[0083] S560: Based on the comparison result, if the obtained excess sum value is less than the increaseable threshold, a frequency reduction adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold of the surge occurrence parameter, and a frequency increase adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold of the surge occurrence parameter;

[0084] S561, the regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter;

[0085] S562, the regulating modules connected to the other cold storage hosts in operation receive the regulating signals, and the regulating modules control the operating frequency values ​​of the connected cold storage hosts to increase, thereby completing the load transfer;

[0086] Among them, the increased operating frequency values ​​of the remaining cold storage hosts in operation are the average value of the sum of the reduced values ​​of one or more cold storage hosts in operation.

[0087] S570. Based on the comparison result, if the obtained excess total value is greater than the increaseable threshold, a frequency reduction adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold of the surge occurrence parameter, and an operation start signal and a frequency increase adjustment signal are sent to the adjustment module connected to the cold storage host that is not in operation.

[0088] S571, the regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter;

[0089] S572, the regulating module connected to the cold storage host in the non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the cold storage host to start, and increases the operating frequency value of the connected cold storage host, thereby completing the load transfer;

[0090] The increased operating frequency value of the cold storage host in a non-operating state is the sum of the reduced values ​​of one or more cold storage hosts in an operating state.

[0091] In this embodiment, a data analysis algorithm is used to compare the real-time operating parameters with the surge occurrence parameters, and analyze whether the real-time operating parameters of all the cold storage hosts in operation within the key time period are within the preset threshold range of the surge occurrence parameters, so as to determine whether there is a possibility of surge occurring at present. When the real-time operating parameters of only one, two or three cold storage hosts in operation are within the preset threshold range of the surge occurrence parameter, the control terminal continues to obtain the excess total value within the preset threshold range of the surge occurrence parameter, and compares it with the increaseable threshold value of the remaining cold storage hosts in operation whose real-time operating parameters have not entered the preset threshold range of the surge occurrence parameter; for example, the surge occurrence parameter is 90Hz, and the preset threshold range of the surge occurrence parameter is 70-89Hz. Taking the real-time operating parameters of three cold storage hosts in operation as an example, which are within the preset threshold range of the surge occurrence parameter and the operating frequency of each cold storage host is 80Hz, then each cold storage host exceeds 9Hz at this time, and the excess total value at this time is 27Hz. If the operating frequency of the remaining cold storage host in operation whose real-time operating parameter has not entered the preset threshold range of the surge occurrence parameter is 30hz, the increaseable threshold is 40Hz.

[0092] The excess total value is compared with the increaseable threshold value. If the excess total value is less than the increaseable threshold value, there is no need to start the cold storage host in the non-operating state, and a frequency reduction adjustment signal is sent to the adjustment module connected to the three cold storage hosts in the operating state and whose operating parameters are within the preset threshold range of the surge occurrence parameter, and a frequency increase adjustment signal is sent to the adjustment module of the remaining cold storage host, and the remaining cold storage host receives the load; the adjustment modules connected to the three cold storage hosts in the operating state and whose operating parameters are within the preset threshold range of the surge occurrence parameter receive the adjustment signal, and reduce the operating frequency value of the connected cold storage host to less than the preset threshold value of the surge occurrence parameter, and the adjustment module connected to the remaining cold storage host in the operating state but whose operating parameters are less than the preset threshold range of the surge occurrence parameter receives the adjustment signal, and controls the connected cold storage host to increase the corresponding operating frequency value. Similarly, if the operating parameters of only two cold storage hosts in operation are within the preset threshold range of the surge occurrence parameters, and if the excess total value is less than the increaseable threshold, then the increase in the operating frequency of the other two cold storage hosts is the average value of the excess total value. Similarly, if there is only one, the increase in the operating frequency of the other three is also the average value of the excess total value.

[0093] If the total value exceeds the increaseable threshold, it is necessary to send an operation start signal and a frequency increase adjustment signal to the adjustment module connected to the cold storage host in the non-operating state. The adjustment module connected to the cold storage host in the non-operating state receives the operation start signal and the adjustment signal, starts the cold storage host in the non-operating state, and increases the corresponding operating frequency. At this time, the cold storage host in the non-operating state becomes in the operating state, and the cold storage host in the non-operating state is started and receives the load to maintain the entire system at the original cooling demand.

[0094] As required, after step S532 or step S572, the following steps may be further included:

[0095] S600, real-time acquisition of operating parameters of the cold storage host that is in a non-operating state and becomes an operating state after load transfer by the regulating module, and comparison of the acquired operating parameters with surge occurrence parameters using a data analysis algorithm;

[0096] S700. Based on the comparison result, if the obtained operating parameters are within the preset threshold range of the surge occurrence parameters, a stop operation signal is sent to the regulating module connected to the cold storage host, a stop operation signal is received from the regulating module connected to the cold storage host, and the cold storage host is controlled to stop operating.

[0097] In this embodiment, in order to prevent the cold storage host, which is in a non-operating state and becomes an operating state after load transfer by the adjustment module, from receiving the load transfer, and the operating frequency continues to increase to reach the extreme point of surge occurrence, when the operating parameters of the cold storage host are obtained to be within the preset threshold range of the surge occurrence parameters, a stop operation signal is sent to the adjustment module connected to it through the control terminal, and the adjustment module controls the cold storage host to stop running, so as to avoid the occurrence of surge.

[0098] The present application also relates to a control system for preventing surge of a cold storage main unit of a cold storage air conditioning system, comprising:

[0099] A first data acquisition module is used to acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surges occurred in a number of cold storage systems;

[0100] A data preprocessing module, used to extract several time points when surge occurs in the cold storage system for preprocessing;

[0101] A time marking module is used to input the pre-processed time points when the cold storage system surges into the trained model, integrate the time points into the surge occurrence time period through the trained model, and mark them as key time periods;

[0102] A second data acquisition module is used to acquire real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module;

[0103] The load regulation control module is used to send an adjustment signal to the adjustment module when the real-time time for obtaining the real-time operating parameters is within the marked key time period. The adjustment module receives the adjustment signal and sends a control signal to the cold storage host. The adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state.

[0104] Furthermore, it also includes:

[0105] The data monitoring module is used to obtain in real time the operating parameters of the cold storage host which is in a non-operating state and becomes an operating state after load transfer by the regulating module, and compare the obtained operating parameters with the surge occurrence parameters using a data analysis algorithm.

[0106] For the specific definition of a control system for preventing the surge of the cold storage host of a cold storage air-conditioning system, please refer to the definition of a control method for preventing the surge of the cold storage host of a cold storage air-conditioning system mentioned above, which will not be repeated here. Each module in the above-mentioned control system for preventing the surge of the cold storage host of a cold storage air-conditioning system can be implemented in whole or in part by software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above-mentioned modules.

[0107] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Figure 2 As shown. The computer device includes a processor, a memory, a network interface and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data information, encryption keys, encryption information, etc. The network interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a control system is implemented to prevent the cold storage host of the cold storage air conditioning system from surging.

[0108] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, a control system is implemented to prevent surge of a cold storage host of a cold storage air conditioning system.

[0109] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, a control system is implemented to prevent surge of a cold storage host of a cold storage air conditioning system.

[0110] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0111] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0112] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A control method for preventing surge of a cold storage main unit of a cold storage air conditioning system, characterized in that: The steps include: Acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surge occurred in the cold storage system for several times, and the historical operation data also includes operation parameters when surge occurred in the cold storage system for several times; Extract the operating parameters of several cold storage system surges for preprocessing; Inputting the preprocessed operating parameters of several cold storage system surges into the trained model, and converting the operating parameters into surge occurrence parameters through the trained model; Extract several time points when surge occurs in the cold storage system for preprocessing; Input the preprocessed time points of surge occurrence of the cold storage system into the trained model, integrate the time points into the surge occurrence time period through the trained model, and mark them as key time periods; Acquire real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module; When the real-time time of obtaining the real-time operating parameters is within the marked key time period, an adjustment signal is sent to the adjustment module, the adjustment module receives the adjustment signal and sends a control signal to the cold storage host, and the adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state. Specifically, When the real-time time of the acquired real-time operating parameter is within the marked key time period, the real-time operating parameter is compared with the surge occurrence parameter; Based on the comparison results, analyze and determine whether the real-time operating parameters of several cold storage hosts in operation are within the preset threshold range of surge occurrence parameters; If only the real-time operating parameters of one or more cold storage hosts in operation are within the preset threshold range of the surge occurrence parameter, obtaining the excess sum value of the real-time operating parameters of one or more cold storage hosts in operation within the preset threshold range of the surge occurrence parameter; Compare the obtained excess sum value with the threshold value that can be increased by the remaining one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold value of the surge occurrence parameter; Based on the comparison result, if the obtained excess sum value is less than the increaseable threshold, a frequency reduction adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold of the surge occurrence parameter, and a frequency increase adjustment signal is sent to the adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are less than the preset threshold of the surge occurrence parameter; Based on the comparison result, if the obtained excess sum value is greater than the threshold value that can be increased, a frequency reduction adjustment signal is sent to the adjustment modules connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than the preset threshold value of the surge occurrence parameter, and an operation start signal and a frequency increase adjustment signal are sent to the adjustment modules connected to the cold storage hosts that are not in operation; If the real-time operating parameters of the plurality of cold storage hosts in operation are all within the preset threshold range of the surge occurrence parameter, a frequency reduction regulating signal is sent to the regulating modules connected to the plurality of cold storage hosts in operation, and an operation start signal and a frequency increase regulating signal are sent to the regulating modules connected to the cold storage hosts in non-operation; The regulating modules connected to the plurality of cold storage hosts in operation receive the regulating signal, and the regulating modules control the operation frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter; The regulating module connected to the cold storage host in a non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the start of the cold storage host and increases the operating frequency value of the connected cold storage host to complete the load transfer; wherein the operating frequency value increased by the cold storage host in a non-operating state is the sum of the reduced values ​​of several cold storage hosts in an operating state.

2. The control method for preventing surge of a cold storage main unit of a cold storage air conditioning system according to claim 1, characterized in that: The step of inputting the pre-processed time points when the cold storage system surges for several times into the trained model, integrating the time points into the surge occurrence time period through the trained model, and marking them as key time periods is specifically as follows: The time points outside the preset time range are removed from the time points when surge occurs in the cold storage system for several times, the time points within the preset time range are extracted and integrated into the surge occurrence time period, and the integrated surge occurrence time period is marked as the key time period.

3. The control method for preventing surge of a cold storage main unit of a cold storage air conditioning system according to claim 1, characterized in that: After the step of sending a frequency reduction adjustment signal to an adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operating parameters are greater than a preset threshold value of a surge occurrence parameter, and sending a frequency increase adjustment signal to an adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operating parameters are less than a preset threshold value of a surge occurrence parameter, based on the comparison result, the following steps are performed: The regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter; The regulating modules connected to the other cold storage hosts in operation receive the regulating signals, and the regulating modules control the operating frequency values ​​of the connected cold storage hosts to increase, thereby completing the load transfer; Among them, the increased operating frequency values ​​of the remaining cold storage hosts in operation are the average value of the sum of the reduced values ​​of one or more cold storage hosts in operation.

4. The control method for preventing surge of a cold storage main unit of a cold storage air conditioning system according to claim 1, characterized in that: After the step of sending a frequency reduction adjustment signal to an adjustment module connected to one or more cold storage hosts that are in operation and whose real-time operation parameters are greater than a preset threshold value of a surge occurrence parameter, and sending an operation start signal and a frequency increase adjustment signal to an adjustment module connected to a cold storage host that is not in operation, the following steps are performed: The regulating module connected to one or more cold storage hosts in operation receives the regulating signal, and the regulating module controls the operating frequency value of the connected cold storage hosts to be reduced to a preset threshold value less than the surge occurrence parameter; The regulating module connected to the cold storage host in a non-operating state receives the operation start signal and the regulating signal, and the regulating module controls the cold storage host to start, and increases the operating frequency value of the connected cold storage host, thereby completing the load transfer; The increased operating frequency value of the cold storage host in a non-operating state is the sum of the reduced values ​​of one or more cold storage hosts in an operating state.

5. A control system for preventing a cold storage main unit of a cold storage air conditioning system from surging, which is used to execute relevant steps using a control method for preventing a cold storage main unit of a cold storage air conditioning system from surging as claimed in any one of claims 1 to 4, characterized in that: include: A first data acquisition module is used to acquire historical operation data of the cold storage system, wherein the historical operation data includes time points when surges occurred in a number of cold storage systems; A data preprocessing module, used to extract several time points when surge occurs in the cold storage system for preprocessing; A time marking module is used to input the pre-processed time points when the cold storage system surges into the trained model, integrate the time points into the surge occurrence time period through the trained model, and mark them as key time periods; A second data acquisition module is used to acquire real-time operating parameters of a cold storage system, wherein the cold storage system includes a cold storage host in a non-operating state and a plurality of cold storage hosts in an operating state, and each cold storage host is connected to a regulating module; The load regulation control module is used to send an adjustment signal to the adjustment module when the real-time time for obtaining the real-time operating parameters is within the marked key time period. The adjustment module receives the adjustment signal and sends a control signal to the cold storage host. The adjustment module controls the cold storage host in the running state to transfer the load to the cold storage host in the non-running state.

6. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the steps of a control method for preventing surge of a cold storage host of a cold storage air-conditioning system as described in any one of claims 1 to 4 are implemented.

7. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by the processor, the steps of a control method for preventing surge of a cold storage host of a cold storage air-conditioning system as described in any one of claims 1 to 4 are implemented.

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