Energy-saving control method, system and storage medium based on chiller water storage

Abstract

The present invention belongs to the field of data processing technology, and specifically relates to an energy-saving control method, system and storage medium based on chiller water storage. The method includes dividing a target area into multiple sub-areas, installing a refrigeration device, a first intelligent sensor and a second intelligent sensor in each sub-area, obtaining a first temperature of each sub-area according to the first intelligent sensor, obtaining a second temperature of cold air transmitted by each refrigeration device to the corresponding sub-area according to the second intelligent sensor, controlling the working state of multiple refrigeration devices according to multiple first temperatures and multiple second temperatures, obtaining daily energy consumption data of all refrigeration devices, using the energy consumption data as learning data to train a prediction model, and using the trained prediction model to predict the energy consumption required for a preset period in the future. The present invention can control the working state of the refrigeration device according to the temperature, and can achieve the purpose of energy saving while being able to accurately control the temperature of the target area.

Description

Technical Field

[0001] The present invention belongs to the technical field of data processing, and in particular relates to an energy-saving control method, system and storage medium based on chiller water storage. Background Art

[0002] In the closed workshop of an electronics factory, a large amount of heat is generated during production, which requires cooling to maintain a constant temperature. Shopping malls, hotels, hospitals and other places also need cooling in summer. Due to the implementation of peak and valley electricity prices, when electricity prices are low, high-power refrigeration mechanisms are started to cool the water, lowering the water temperature to a lower temperature and storing the water in large insulated cold storage tanks. When electricity prices are high during the day, there is no need to turn on high-power air-conditioning hosts, and the cold energy previously stored in the cold storage tanks can be released for use, thereby achieving energy saving. A similar prior art is a Chinese invention patent with publication number CN113326605B, which discloses a method for optimizing a multi-mode centralized cooling system taking into account flexible cooling load regulation. The method comprises the following steps: constructing a flexible cooling load regulation model and a multi-mode centralized cooling system model, and setting a flexible cooling load regulation incentive mechanism for different terminal users according to each user's hourly cooling demand, the recommended indoor temperature value, and the outdoor temperature, obtaining the user's hourly cooling demand after regulation, and inputting it into the constructed multi-mode centralized cooling system to find the optimal solution for each user's optimal flexible cooling load regulation scheme and the optimal system operation strategy. However, the invention does not consider the issue of energy saving in the cooling process. Similar prior art also includes a Chinese patent application document with publication number CN109960874A, which discloses a method for operating a cold storage system based on operating economy, and the method includes the following steps: establishing a cold storage model: including modeling of refrigeration and cold storage equipment; establishing a user air conditioning load model: including user air conditioning load modeling and model correction; establishing a control strategy: based on the cold storage model and peak-valley electricity prices, with the goal of minimizing operating costs within a cold storage and release cycle, a control strategy is established to control the operation and output of each component of the cold storage system; model correction: the model is corrected according to the user's actual operating load and changes in peak-valley electricity prices. However, this invention only considers saving money and does not consider the issue of energy saving during the refrigeration process. Therefore, the present invention provides an energy-saving control method, system and storage medium based on chiller water storage. Summary of the invention

[0003] The present invention divides the target area into multiple sub-areas, installs refrigeration equipment, a first intelligent sensor and a second intelligent sensor in each sub-area, obtains the first temperature of each sub-area according to the first intelligent sensor, obtains the second temperature of each refrigeration equipment transmitting cold air to the corresponding sub-area according to the second intelligent sensor, controls the working state of multiple refrigeration equipment according to multiple first temperatures and multiple second temperatures, obtains the daily energy consumption data of all refrigeration equipment, uses the energy consumption data as learning data to train the prediction model, and uses the trained prediction model to predict the energy consumption data required for the future preset period. The present invention can control the working state of the refrigeration equipment according to the temperature, and can achieve the purpose of energy saving while being able to accurately control the temperature of the target area.

[0004] In order to achieve the above-mentioned purpose of the invention, the present invention provides an energy-saving control method based on chiller water storage as described below, which is mainly implemented by executing the following steps:

[0005] Step S1, dividing a target area into a plurality of sub-areas, wherein the target area is a closed space that needs to maintain a constant temperature range, and the plurality of sub-areas are interconnected, and a refrigeration device is installed in each of the sub-areas, and the plurality of refrigeration devices lower the temperature of the sub-areas by transmitting cold air to the plurality of sub-areas;

[0006] Step S2, installing a first intelligent sensor and a second intelligent sensor in each of the sub-areas, wherein the first intelligent sensor is used to obtain a first temperature of each sub-area, and the second intelligent sensor is used to obtain a second temperature at which each refrigeration device transmits cold air to the corresponding sub-area, and controlling the working states of the plurality of refrigeration devices according to the plurality of the first temperatures and the plurality of the second temperatures, wherein the working states include on and off;

[0007] Step S3, obtaining energy consumption data of all the refrigeration equipment in a preset period, the energy consumption data including water consumption and electricity consumption, using the energy consumption data as learning data to train the prediction model, and using the trained prediction model to predict the water consumption and electricity consumption required for the future preset period.

[0008] As a preferred technical solution of the present invention, it is characterized in that in step S2, a first intelligent sensor and a second intelligent sensor are installed in each of the sub-areas, the first intelligent sensor is installed at the center position of the top of each of the sub-areas, and the second intelligent sensor is installed at the position of the cold air outlet of each of the refrigeration equipment.

[0009] As a preferred technical solution of the present invention, it is characterized in that, in the step S2, the process of controlling the working states of the plurality of refrigeration devices according to the plurality of the first temperatures and the plurality of the second temperatures comprises the following steps:

[0010] Step S21, obtaining the first temperature of each sub-area, obtaining the highest temperature from the multiple first temperatures, comparing the highest temperature with a first threshold, if the highest temperature is greater than or equal to the first threshold, executing step S22, if the highest temperature is less than the first threshold, executing step S24;

[0011] Step S22, obtaining the first refrigeration device and the corresponding first sub-area corresponding to the highest temperature, obtaining the working state of the first refrigeration device, if the working state is off, turning on the first refrigeration device, recording the turning-on time of the first refrigeration device, marking the first refrigeration device as the most recently turned-on device, and returning to the step S21, if the working state is on, obtaining the working states of all the refrigeration devices in the target area, calling all the refrigeration devices whose working state is off as off devices, and calculating and saving the cooling ratios of all the refrigeration devices to the first sub-area in advance;

[0012] Step S23, obtaining a first cooling ratio of all the closed devices to the first sub-area, obtaining a maximum cooling ratio among all the first cooling ratios as the first maximum cooling ratio, obtaining a cooling device A corresponding to the first maximum cooling ratio, turning on the cooling device A corresponding to the first maximum cooling ratio, recording the turning-on time of the cooling device A, marking the cooling device A as the most recently turned-on device, and returning to step S21;

[0013] Step S24, obtaining all the second temperatures, subtracting the corresponding second temperature from each first temperature to obtain multiple differences, obtaining a minimum difference from the multiple differences, and obtaining a second sub-area corresponding to the minimum difference.

[0014] As a preferred technical solution of the present invention, it is characterized in that, after step S24, the following steps are further performed:

[0015] Compare the minimum difference with the second threshold value, if the minimum difference is less than or equal to the second threshold value, obtain the working status of all refrigeration devices in the target area, refer to all refrigeration devices whose working status is turned on as turned-on devices, calculate and save the cooling ratios of all the refrigeration devices to the second sub-area in advance, obtain the second cooling ratio of all the turned-on devices to the second sub-area, obtain the maximum cooling ratio of all the second cooling ratios as the second maximum cooling ratio, obtain the refrigeration device B corresponding to the second maximum cooling ratio, compare whether the refrigeration device B and the refrigeration device marked as recently turned on are the same refrigeration device, and if so, obtain all the The second largest cooling ratio among the second cooling ratios, obtaining the refrigeration device C corresponding to the second largest cooling ratio, and judging whether the on-time of the refrigeration device C is greater than or equal to the third threshold value, if so, turning off the refrigeration device C and returning to the step S21, if not, returning to the step S21, if the refrigeration device B and the refrigeration device marked as recently turned on are not the same refrigeration device, calculating the on-time of the refrigeration device B according to the current time and the on-time of the refrigeration device B, and judging whether the on-time of the refrigeration device B is greater than or equal to the third threshold value, and if so, turning off the refrigeration device B and returning to the step S21, otherwise returning to the step S21.

[0016] As a preferred technical solution of the present invention, it is characterized in that, in the step S22, the process of calculating the cooling ratio of all the refrigeration equipment to the first sub-area includes the following steps:

[0017] Step S221, turn off all the refrigeration equipment in the target area, record the current time as the first time, obtain the temperature T1 of the first sub-area at the first time, turn on all the refrigeration equipment, and obtain the temperature T2 of the first sub-area after a first time period.

[0018] Step S222, turning off all the refrigeration devices again until the temperature of the first sub-area rises to the first temperature T1, turning on one of the refrigeration devices, obtaining the temperature T3 of the first sub-area after the first time period, subtracting the temperature T2 from the temperature T1 to obtain a first temperature difference, subtracting the temperature T3 from the temperature T1 to obtain a second temperature difference, and dividing the second temperature difference by the first temperature difference to obtain a result that is calculated as the cooling ratio of the turned-on refrigeration device to the first sub-area;

[0019] Step S223, repeating step S222 to calculate the cooling ratios of other refrigeration devices in the target area to the first sub-area, until the cooling ratios of all refrigeration devices to the first sub-area are calculated.

[0020] As a preferred technical solution of the present invention, it is characterized in that the process of calculating the cooling ratio of all the refrigeration equipment to the second sub-area is the same as the process of calculating the cooling ratio of all the refrigeration equipment to the first sub-area in advance.

[0021] The present invention also provides an energy-saving control system based on chiller water storage, comprising the following modules:

[0022] A region division module is used to divide a target region into a plurality of sub-regions, wherein the target region is a closed space that needs to maintain a constant temperature range, and the plurality of sub-regions are interconnected, and a refrigeration device is installed in each of the sub-regions, and the plurality of refrigeration devices lower the temperature of the target region by transmitting cold air to the plurality of sub-regions;

[0023] an equipment control module, configured to obtain a first temperature of each sub-area according to the first intelligent sensor, obtain a second temperature at which each refrigeration device transmits cold air to the corresponding sub-area according to the second intelligent sensor, and control working states of a plurality of refrigeration devices according to a plurality of the first temperatures and a plurality of the second temperatures;

[0024] The data prediction module is used to obtain the daily energy consumption data of all the refrigeration equipment, the energy consumption data including water consumption and electricity consumption, use the energy consumption data as learning data to train the prediction model, and use the trained prediction model to predict the water consumption and electricity consumption required for a future preset period.

[0025] Compared with the prior art, the beneficial effects of the present invention are at least as follows:

[0026] In the present invention, the target area is first divided into multiple sub-areas, and a refrigeration device, a first intelligent sensor, and a second intelligent sensor are installed in each sub-area. The first temperature of each sub-area is obtained according to the first intelligent sensor, and the second temperature of each refrigeration device transmitting cold air to the corresponding sub-area is obtained according to the second intelligent sensor. The working state of multiple refrigeration devices is controlled according to the multiple first temperatures and the multiple second temperatures, and the daily energy consumption data of all refrigeration devices is obtained. The energy consumption data is used as learning data to train the prediction model, and the trained prediction model is used to predict the energy consumption required for the future preset period. The present invention can control the working state of the refrigeration device according to the temperature, and can achieve the purpose of energy saving while being able to accurately control the temperature of the target area. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flow chart of the steps of an energy-saving control method based on chiller water storage of the present invention;

[0028] Figure 2The present invention is a structural diagram of an energy-saving control system based on chiller water storage. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0030] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first xx script may be referred to as a second xx script, and similarly, a second xx script may be referred to as a first xx script.

[0031] The present invention provides an energy-saving control method based on chiller water storage, which is mainly implemented by executing the following steps:

[0032] Step S1, dividing the target area into multiple sub-areas, the target area is a closed space that needs to maintain a constant temperature range, the multiple sub-areas are interconnected, a refrigeration device is installed in each sub-area, and the multiple refrigeration devices reduce the temperature of the sub-areas by transmitting cold air to the multiple sub-areas.

[0033] Specifically, in order to control the temperature of the target area to keep it within a constant temperature range, such as an electronic device manufacturing workshop, the manufacturing machines will generate heat during operation, causing the temperature in the manufacturing workshop to rise, but the manufacturing machines can only work normally if they are kept within a constant range of 20-25 degrees, and the manufacturing workshop is generally large, so multiple refrigeration equipment is installed in the manufacturing workshop. In order to ensure that the temperature in the manufacturing workshop is kept within a constant range of 20-25 degrees, the target area is divided into multiple sub-areas, and a refrigeration equipment is installed in each sub-area. The refrigeration equipment reduces the temperature of the sub-area by transmitting cold air. Since the multiple sub-areas are interconnected, it is inevitable that the refrigeration equipment installed in one of the sub-areas will also have a cooling effect on other sub-areas. The present invention achieves the purpose of accurately controlling the temperature of the entire target area by controlling the temperature of each sub-area within a constant range.

[0034] Step S2, installing a first intelligent sensor and a second intelligent sensor in each sub-area, the first intelligent sensor is used to obtain the first temperature of each sub-area, and the second intelligent sensor is used to obtain the second temperature of each refrigeration device transmitting cold air to the corresponding sub-area, and controlling the working status of multiple refrigeration devices according to the multiple first temperatures and the multiple second temperatures, and the working status includes on and off.

[0035] Specifically, during the operation of multiple refrigeration devices, over-cooling of the refrigeration devices may occur. At this time, some refrigeration devices need to be shut down to achieve the purpose of energy saving. Similarly, after shutting down some refrigeration devices, as the operating frequency of manufacturing machines in the target area, such as a manufacturing workshop, increases, the temperature of the manufacturing workshop may rise faster. At this time, some refrigeration devices need to be turned on to achieve the purpose of keeping the temperature in the manufacturing workshop stable within a constant range. Therefore, in order to more accurately control the opening and closing of the refrigeration equipment and keep the temperature of the target area within a constant range, a first intelligent sensor and a second intelligent sensor are installed in each sub-area. The first intelligent sensor is used to obtain a first temperature of each sub-area, and the second intelligent sensor is used to obtain a second temperature of each refrigeration device transmitting cold air to the corresponding sub-area. The working state of the corresponding refrigeration device is controlled according to the first temperature and the corresponding second temperature. The working state of the refrigeration device includes two states: on and off.

[0036] Step S3: Obtain energy consumption data of all refrigeration equipment in a preset period, the energy consumption data including water consumption and electricity consumption, use the energy consumption data as learning data to train the prediction model, and use the trained prediction model to predict the water consumption and electricity consumption required in the future preset period.

[0037] Specifically, the energy consumption data of the preset period of the refrigeration equipment can be recorded. The preset period can be one hour, half a day, one day or a week, etc. The energy consumption data can be the water consumption and electricity consumption required for the preset working period of the refrigeration equipment. The energy consumption data can be used as learning data to train the prediction model. The trained prediction model can be used to predict the water consumption required for the future preset period. Sufficient water consumption can be prepared for the future based on the predicted data. For example, the predicted water consumption can be stored when the electricity price is relatively low, and used when the electricity price is relatively high, so as to save electricity bills.

[0038] Furthermore, in step S2, a first smart sensor and a second smart sensor are installed in each sub-area, wherein the first smart sensor is installed at the center of the top of each sub-area, and the second smart sensor is installed at the cold air outlet of each refrigeration device.

[0039] Specifically, in order to more accurately obtain the first temperature of each sub-area, the first sensor is installed at the center position of the top of each sub-area. In order to more accurately obtain the temperature of the cold air delivered by each refrigeration device, the second intelligent sensor is installed at the cold air outlet of each refrigeration device.

[0040] Furthermore, in step S2, the process of controlling the working states of the plurality of refrigeration devices according to the plurality of first temperatures and the plurality of second temperatures is mainly implemented by executing the following steps:

[0041] Step S21, obtain the first temperature of each sub-area, obtain the highest temperature from multiple first temperatures, compare the highest temperature with the first threshold, if the highest temperature is greater than or equal to the first threshold, execute step S22, if the highest temperature is less than the first threshold, execute step S24.

[0042] Specifically, the first temperature of each sub-area is obtained through the first intelligent sensor. Since the first intelligent sensor is installed at the center of the top of the sub-area, the first temperature can represent the temperature of the entire sub-area. The highest temperature of all the first temperatures is obtained, and the highest temperature is compared with the first threshold. If the highest temperature is greater than or equal to the first threshold, it means that if the sub-area corresponding to the highest temperature does not take cooling measures in time, the temperature of the sub-area may increase in the future. The increase in the temperature of a sub-area may cause the temperature of the target area to increase accordingly, thereby affecting the normal operation of the machine in the target area. At this time, the refrigeration device with the largest cooling ratio for the sub-area corresponding to the highest temperature is obtained, and the refrigeration device is used to cool the sub-area The cooling process can effectively reduce the temperature of the corresponding sub-area, thereby keeping the temperature of the target area within a constant range. The cooling ratio refers to the cooling contribution rate of the refrigeration equipment to a sub-area. The specific calculation method of the cooling ratio will be described in detail later. If the maximum temperature is less than the first threshold, it means that the temperatures of all sub-areas are in a lower range, and there is no need to turn on the refrigeration equipment. In addition, some sub-areas may be over-cooled, and some refrigeration equipment may need to be turned off. At this time, the refrigeration equipment that can be turned off is judged according to the first temperature and the second temperature obtained by the second sensor, and the refrigeration equipment that can be turned off is turned off to achieve the purpose of energy saving. Which refrigeration equipment to turn off will be explained in detail later.

[0043] Step S22, obtain the first refrigeration device and the corresponding first sub-area corresponding to the highest temperature, obtain the working status of the first refrigeration device, the working status includes on and off, if the working status is off, turn on the first refrigeration device, record the turn-on time of the first refrigeration device, and mark the first refrigeration device as the most recently turned-on device, return to step S21, if the working status is on, obtain the working status of all refrigeration devices in the target area, call all refrigeration devices with a working status of off as off devices, and calculate and save the cooling ratio of all refrigeration devices to the first sub-area in advance.

[0044] Specifically, each sub-area, the refrigeration equipment corresponding to each sub-area, the working status of the refrigeration equipment, the first temperature corresponding to each sub-area and the second temperature corresponding to each sub-area are associated and saved, so that after obtaining the maximum temperature, the working status of the refrigeration equipment can be obtained by obtaining the sub-area corresponding to the maximum temperature and the refrigeration equipment installed in the sub-area, and the working status of the refrigeration equipment can be obtained. The working status includes two states: on and off. If the maximum temperature is greater than or equal to the first threshold, the first refrigeration equipment and the first sub-area corresponding to the maximum temperature are obtained, and the working status of the first refrigeration equipment is also obtained to judge the working status of the first refrigeration equipment.

[0045] If the working state of the first refrigeration device is off, since the first refrigeration device is directly installed in the first sub-area, the refrigeration ratio of the first refrigeration device to the first sub-area must be the highest. Turning on the first refrigeration device can effectively reduce the temperature of the first sub-area. Therefore, by turning on the first refrigeration device, cooling measures are taken for the first sub-area corresponding to the highest temperature. After that, the opening time of the first refrigeration device is recorded, and the first refrigeration device is marked as the most recently opened device. Then, return to step S21 to continue monitoring the first temperatures of all sub-areas.

[0046] If the working state of the first refrigeration device is on, then obtain all refrigeration devices whose working state is off in the target area and call these devices off devices, calculate the cooling ratios of all refrigeration devices to the first sub-area in advance, and the specific calculation method will be explained in detail later. Obtain the cooling ratios of all off devices to the first sub-area from all cooling ratios, and select which refrigeration device to turn on to cool the first sub-area according to the cooling ratio.

[0047] Step S23, obtain the first cooling ratio of all closed devices to the first sub-area, obtain the maximum cooling ratio among all the first cooling ratios, called the first maximum cooling ratio, obtain the refrigeration device A corresponding to the first maximum cooling ratio, and turn on the refrigeration device A corresponding to the first maximum cooling ratio, and also record the turn-on time of the refrigeration device A, and also mark the refrigeration device A as the most recently turned-on device, and return to step S21.

[0048] Specifically, after obtaining the cooling ratios of all closed devices to the first sub-area, the largest cooling ratio is obtained, which is called the first maximum cooling ratio. The corresponding refrigeration device A is obtained according to the first maximum cooling ratio, and the refrigeration device A is turned on to cool the first sub-area. The turn-on time of the refrigeration device A is also recorded, and the refrigeration device A is marked as the most recently turned-on device. This is because frequent turning on and off of refrigeration devices will not only increase energy consumption but also increase the probability of failure of the refrigeration device. If refrigeration device A needs to be turned off in the subsequent judgment process, then before turning off refrigeration device A, it is judged whether the turn-on time of refrigeration device A has passed the predetermined time based on the turn-on time of refrigeration device A and the current time. Each time a refrigeration device is turned on, the turn-on time of the currently turned-on refrigeration device is recorded, which serves as a basis for judging the turn-on time when the refrigeration device is turned off later.

[0049] Step S24, obtaining all second temperatures, subtracting the corresponding second temperature from each first temperature to obtain multiple differences, obtaining a minimum difference from the multiple differences, and obtaining a second sub-region corresponding to the minimum difference.

[0050] Specifically, if the highest temperature is less than the first threshold, it means that the first temperatures of all current sub-areas are relatively low, and there is no need to turn on additional refrigeration equipment. At this time, it is determined whether a certain refrigeration equipment needs to be turned off to achieve energy saving. The second temperatures of all sub-areas obtained by the second temperature sensor are obtained. The second temperature refers to the temperature of the cold air transmitted by each refrigeration equipment. The temperature of each sub-area is subtracted from the obtained temperature of the cold air, that is, the first temperature is subtracted from the corresponding second temperature, and multiple differences, that is, the temperature difference between two temperatures, are obtained. The minimum difference among all the differences, that is, the minimum temperature difference, is obtained. At this time, since the first temperatures of all sub-areas are within a lower temperature range, if the minimum temperature difference is small, it means that the first temperature and the second temperature of the sub-area corresponding to the minimum temperature difference are relatively close, and there may be over-cooling. Therefore, it is determined whether a certain refrigeration equipment needs to be turned off based on the minimum temperature difference. The specific judgment process is explained in detail later.

[0051] Furthermore, after step S24, the following steps are also performed:

[0052] Compare the minimum difference with the second threshold value. If the minimum difference is less than or equal to the second threshold value, obtain the working status of all refrigeration devices in the target area, refer to all refrigeration devices with the working status of on as on devices, calculate and save the refrigeration ratios of all refrigeration devices to the second sub-area in advance, obtain the second refrigeration ratios of all on devices to the second sub-area, obtain the maximum refrigeration ratio among all second refrigeration ratios as the second maximum refrigeration ratio, obtain the refrigeration device B corresponding to the second maximum refrigeration ratio, compare whether refrigeration device B and the refrigeration device marked as recently turned on are the same refrigeration device, if so, obtain the second largest refrigeration ratio among all second refrigeration ratios, obtain the refrigeration device C corresponding to the second largest refrigeration ratio, determine whether the on time of refrigeration device C is greater than or equal to the third threshold value, if so, turn off refrigeration device C and return to step S21, if not, return to step S21, if refrigeration device B and the refrigeration device marked as recently turned on are not the same refrigeration device, calculate the on time of refrigeration device B according to the current time and the on time of refrigeration device B, determine whether the on time of refrigeration device B is greater than or equal to the third threshold value, if so, turn off refrigeration device B and return to step S21, otherwise return to step S21.

[0053] Specifically, the minimum difference and the second threshold are compared. The second threshold is a threshold set according to historical experience for determining whether the refrigeration equipment is over-cooled. If the minimum difference is less than or equal to the second threshold, it means that there is over-cooling. At this time, a refrigeration equipment is selected to be turned off. In order to quickly and accurately reduce energy consumption, the second sub-area corresponding to the minimum difference is obtained, and the refrigeration equipment with the largest cooling ratio for the second sub-area is selected. In order to select the refrigeration equipment with the largest cooling ratio for the second sub-area, the cooling ratio of all refrigeration equipment to each sub-area is calculated in advance. The specific calculation method is explained in detail later. All second cooling ratios of all refrigeration equipment to the second sub-area are obtained, and the largest cooling ratio is obtained from all second cooling ratios, which is called the second maximum cooling ratio. The refrigeration equipment B corresponding to the second maximum cooling ratio is obtained, and the refrigeration equipment that was recently turned on is obtained. It is compared whether the refrigeration equipment B and the refrigeration equipment that was recently turned on are the same refrigeration equipment.

[0054] If so, since frequently turning on and off the same refrigeration device will reduce the life of the refrigeration device and increase the energy consumption of the refrigeration device, in order to avoid repeated turning on and off of the refrigeration device, after turning on a refrigeration device, when the refrigeration device is turned off next time, no matter how long the last refrigeration device turned on is, the most recently turned on refrigeration device will not be turned off, so refrigeration device B will not be turned off. Since there may be over-cooling, in order to save energy, the second largest refrigeration ratio among all second refrigeration ratios is obtained, and the refrigeration device C corresponding to the second largest refrigeration ratio is obtained. It is judged whether the opening time of refrigeration device C is greater than or equal to the third threshold value. If so, the refrigeration device C is turned off and then the step S21 is returned. If not, the step S21 is returned to continue to monitor the temperature of the target area. According to historical experience, when refrigeration device B is the same as the most recently turned on device, the opening time of refrigeration device C corresponding to the second largest refrigeration ratio is greater than the third threshold value. Generally, the opening time of refrigeration device C is not less than the third threshold value. If this situation is encountered in actual circumstances, there is no need to continue to obtain the refrigeration device corresponding to the third largest refrigeration ratio.

[0055] If not, since frequently turning on and off the same refrigeration equipment will reduce the life of the refrigeration equipment and increase the energy consumption of the refrigeration equipment, a reasonable opening time, that is, the third threshold, is set for the refrigeration equipment based on historical experience, and it is stipulated that a refrigeration equipment can only be turned off after the opening time is greater than or equal to the third threshold. The opening time of refrigeration equipment B is obtained, and the opening time of refrigeration equipment B is calculated according to the current time and the opening time of refrigeration equipment B. When refrigeration equipment B is selected and refrigeration equipment B and the most recently turned on refrigeration equipment are not the same device, it is determined whether the opening time of refrigeration equipment B is greater than or equal to the third threshold. If it is greater than, turn off refrigeration equipment B, which means that the opening time of refrigeration equipment B has exceeded After the set reasonable on-time, the refrigeration device B can be turned off. Otherwise, it means that the on-time of the refrigeration device B has not exceeded the set reasonable on-time. In order to avoid refrigeration device failure due to repeated opening and closing of the refrigeration device, the refrigeration device B is not turned off, and the process returns to step S21 to continue monitoring the temperature of the target area. Generally, when the refrigeration device B and the most recently turned on refrigeration device are not the same device, the on-time of the refrigeration device B meets the closing conditions. However, in actual situations, if a special situation is encountered, that is, the on-time of the refrigeration device B is less than the third threshold, the search for a refrigeration device that can be turned off will no longer continue, and the process returns to step S21 directly.

[0056] Furthermore, in step S22, the process of calculating the cooling ratio of all refrigeration equipment to the first sub-area is specifically implemented by executing the following steps:

[0057] Step S221, turn off all refrigeration equipment in the target area, record the current time as the first time, obtain the temperature T1 of the first sub-area at the first time, turn on all refrigeration equipment, and obtain the temperature T2 of the first sub-area after the first time period.

[0058] Step S222, turn off all refrigeration devices again until the temperature of the first sub-area rises to the first temperature T1, turn on one of the refrigeration devices, obtain the temperature T3 of the first sub-area after the first time period, obtain the first temperature difference by subtracting the temperature T2 from the temperature T1, obtain the second temperature difference by subtracting the temperature T3 from the temperature T1, and divide the second temperature difference by the first temperature difference to obtain the cooling ratio of the turned-on refrigeration device to the first sub-area;

[0059] Step S223, repeat step S222 to calculate the cooling ratios of other refrigeration equipment in the target area to the first sub-area, until the cooling ratios of all refrigeration equipment to the first sub-area are calculated.

[0060] Specifically, in order to calculate the cooling ratio of all refrigeration devices to the first sub-area, first turn off all refrigeration devices, and after a sufficiently long time, obtain the temperature T1 of the first sub-area, at which time the temperature T1 is the natural temperature without any intervention, record the current time as the first time, turn on all refrigeration devices, and after a first time period, the first time period can be set to one hour, two hours, etc., obtain the temperature T2 of the first sub-area, at which time the temperature T2 is less than T1, and the temperature of the first sub-area drops from temperature T1 to temperature T2 as a result of the joint refrigeration of all refrigeration devices, then turn off all refrigeration devices again, monitor the temperature of the first sub-area, until the temperature of the first sub-area rises to temperature T1, select one of the refrigeration devices and turn on the selected refrigeration device, after the same first time period, obtain the temperature T3 of the first sub-area, the temperature of the first sub-area drops from temperature T1 to temperature T3 as a result of the refrigeration of the selected refrigeration device, calculate the first temperature difference between temperature T1 and temperature T2, the first temperature difference is the temperature difference obtained after all refrigeration devices are refrigerated, and calculate the second temperature difference between temperature T1 and temperature T3. The second temperature difference is the temperature difference obtained after the selected refrigeration equipment is refrigerated. The first temperature difference is greater than the second temperature difference. The result obtained by dividing the second temperature difference by the first temperature difference is used as the cooling ratio of the turned-on refrigeration equipment to the first sub-area. The cooling ratios of other refrigeration equipment to the first sub-area are calculated in the same way, thereby obtaining the cooling ratios of all refrigeration equipment to the first sub-area.

[0061] Furthermore, the process of calculating the cooling ratios of all the refrigeration equipment to the second sub-region is the same as the process of calculating the cooling ratios of all the refrigeration equipment to the first sub-region in advance.

[0062] Specifically, the process of calculating the cooling ratio of all refrigeration equipment to the second sub-area is the same as the process of calculating the cooling ratio of all refrigeration equipment to the first sub-area. Similarly, the same method can be used to calculate the cooling ratio of all refrigeration equipment to other sub-areas in the target area.

[0063] According to another aspect of the embodiment of the present invention, Figure 2 As shown, an energy-saving control system based on chiller water storage is also provided, including a region division module, a device control module and a data prediction module, which are used to implement an energy-saving control method based on chiller water storage as described above. The specific functions of each module are as follows:

[0064] The area division module is used to divide the target area into multiple sub-areas. The target area is a closed space that needs to maintain a constant temperature range. The multiple sub-areas are interconnected. A refrigeration device is installed in each sub-area. The multiple refrigeration devices reduce the temperature of the target area by transmitting cold air to the multiple sub-areas.

[0065] an equipment control module, configured to obtain a first temperature of each sub-area according to a first intelligent sensor, obtain a second temperature of each refrigeration device transmitting cold air to a corresponding sub-area according to a second intelligent sensor, and control working states of a plurality of refrigeration devices according to a plurality of first temperatures and a plurality of second temperatures;

[0066] The data prediction module is used to obtain the daily energy consumption data of all refrigeration equipment, including water consumption and electricity consumption. The energy consumption data is used as learning data to train the prediction model, and the trained prediction model is used to predict the water consumption and electricity consumption required for the future preset period.

[0067] In summary, the present invention provides an energy-saving control method, system and storage medium based on chiller water storage. The method includes dividing the target area into multiple sub-areas, installing a refrigeration device, a first intelligent sensor and a second intelligent sensor in each sub-area, obtaining the first temperature of each sub-area according to the first intelligent sensor, obtaining the second temperature of each refrigeration device transmitting cold air to the corresponding sub-area according to the second intelligent sensor, controlling the working state of multiple refrigeration devices according to multiple first temperatures and multiple second temperatures, obtaining the daily energy consumption data of all refrigeration devices, using the energy consumption data as learning data to train the prediction model, and using the trained prediction model to predict the energy consumption required for a preset period in the future. The present invention can control the working state of the refrigeration device according to the temperature, and can achieve the purpose of energy saving while being able to accurately control the temperature of the target area.

[0068] It should be understood that, although each step in the flow chart of each embodiment of the present invention is shown in sequence according to the indication of the arrow, these steps are not necessarily performed in sequence according to the order indicated by the arrow. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be performed in other orders. Moreover, at least a portion of the steps in each embodiment may include a plurality of sub-steps or a plurality of stages, and these sub-steps or stages are not necessarily performed at the same time, but can be performed at different times, and the execution order of these sub-steps or stages is not necessarily performed in sequence, but can be performed in turn or alternately with at least a portion of other steps or sub-steps or stages of other steps.

[0069] 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. The above-mentioned program can be stored in a non-volatile computer-readable storage medium. When the 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 may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in various 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).

[0070] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

[0072] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-saving control method based on chiller water storage, characterized in that: The steps include: Step S1, dividing a target area into a plurality of sub-areas, wherein the target area is a closed space that needs to maintain a constant temperature range, and the plurality of sub-areas are interconnected, and a refrigeration device is installed in each of the sub-areas, and the plurality of refrigeration devices lower the temperature of the sub-areas by transmitting cold air to the plurality of sub-areas; Step S2, installing a first intelligent sensor and a second intelligent sensor in each of the sub-areas, wherein the first intelligent sensor is used to obtain a first temperature of each sub-area, and the second intelligent sensor is used to obtain a second temperature at which each refrigeration device transmits cold air to the corresponding sub-area, and controlling the working states of the plurality of refrigeration devices according to the plurality of the first temperatures and the plurality of the second temperatures, wherein the working states include on and off; Step S3, obtaining energy consumption data of all the refrigeration equipment in a preset period, the energy consumption data including water consumption and electricity consumption, using the energy consumption data as learning data to train the prediction model, and using the trained prediction model to predict the water consumption and electricity consumption required for the future preset period; The process of controlling the working states of the plurality of refrigeration devices according to the plurality of the first temperatures and the plurality of the second temperatures comprises the following steps: Step S21, obtaining the first temperature of each sub-area, obtaining the highest temperature from the multiple first temperatures, comparing the highest temperature with a first threshold, if the highest temperature is greater than or equal to the first threshold, executing step S22, if the highest temperature is less than the first threshold, executing step S24; Step S22, obtaining the first refrigeration device and the corresponding first sub-area corresponding to the highest temperature, obtaining the working state of the first refrigeration device, if the working state is off, turning on the first refrigeration device, recording the turning-on time of the first refrigeration device, marking the first refrigeration device as the most recently turned-on device, and returning to the step S21, if the working state is on, obtaining the working states of all the refrigeration devices in the target area, calling all the refrigeration devices whose working state is off as off devices, and calculating and saving the cooling ratios of all the refrigeration devices to the first sub-area in advance; Step S23, obtaining a first cooling ratio of all the closed devices to the first sub-area, obtaining a maximum cooling ratio among all the first cooling ratios as the first maximum cooling ratio, obtaining a cooling device A corresponding to the first maximum cooling ratio, turning on the cooling device A corresponding to the first maximum cooling ratio, recording the turning-on time of the cooling device A, marking the cooling device A as the most recently turned-on device, and returning to step S21; Step S24, obtaining all the second temperatures, subtracting the corresponding second temperature from each first temperature to obtain multiple differences, obtaining a minimum difference from the multiple differences, and obtaining a second sub-area corresponding to the minimum difference.

2. The energy-saving control method based on chiller water storage according to claim 1 is characterized in that: In step S2, a first smart sensor and a second smart sensor are installed in each of the sub-areas, wherein the first smart sensor is installed at the center of the top of each of the sub-areas, and the second smart sensor is installed at the position of the cold air outlet of each refrigeration device.

3. The energy-saving control method based on chiller water storage according to claim 1 is characterized in that: After step S24, the following steps are further performed: Compare the minimum difference with the second threshold value, if the minimum difference is less than or equal to the second threshold value, obtain the working status of all the refrigeration devices in the target area, refer to all the refrigeration devices whose working status is turned on as turned-on devices, calculate and save the cooling ratios of all the refrigeration devices to the second sub-area in advance, obtain the second cooling ratio of all the turned-on devices to the second sub-area, obtain the maximum cooling ratio of all the second cooling ratios as the second maximum cooling ratio, obtain the refrigeration device B corresponding to the second maximum cooling ratio, compare whether the refrigeration device B and the refrigeration device marked as recently turned on are the same refrigeration device, and if so, obtain the There is a second largest cooling ratio among the second cooling ratios, obtain the refrigeration device C corresponding to the second largest cooling ratio, and judge whether the opening time of the refrigeration device C is greater than or equal to the third threshold value. If so, turn off the refrigeration device C and return to the step S21. If not, return to the step S21. If the refrigeration device B and the refrigeration device marked as recently turned on are not the same refrigeration device, calculate the opening time of the refrigeration device B according to the current time and the opening time of the refrigeration device B, and judge whether the opening time of the refrigeration device B is greater than or equal to the third threshold value. If so, turn off the refrigeration device B and return to step S21. Otherwise, return to step S21.

4. The energy-saving control method based on chiller water storage according to claim 1 is characterized in that: In step S22, the process of calculating the cooling ratio of all the refrigeration equipment to the first sub-area includes the following steps: Step S221, turn off all the refrigeration equipment in the target area, record the current time as the first time, obtain the temperature T1 of the first sub-area at the first time, turn on all the refrigeration equipment, and obtain the temperature T2 of the first sub-area after a first time period. Step S222, turning off all the refrigeration devices again until the temperature of the first sub-area rises to the first temperature T1, turning on one of the refrigeration devices, obtaining the temperature T3 of the first sub-area after the first time period, subtracting the temperature T2 from the temperature T1 to obtain a first temperature difference, subtracting the temperature T3 from the temperature T1 to obtain a second temperature difference, and dividing the second temperature difference by the first temperature difference to obtain a result that is calculated as the cooling ratio of the turned-on refrigeration device to the first sub-area; Step S223, repeating step S222 to calculate the cooling ratios of other refrigeration devices in the target area to the first sub-area, until the cooling ratios of all refrigeration devices to the first sub-area are calculated.

5. The energy-saving control method based on chiller water storage according to claim 3 is characterized in that: The process of calculating the cooling ratio of all the refrigeration devices to the second sub-area is the same as the process of calculating the cooling ratio of all the refrigeration devices to the first sub-area.

6. An energy-saving control system based on chiller water storage, used to implement the method according to any one of claims 1 to 5, characterized in that: Includes the following modules: A region division module is used to divide a target region into a plurality of sub-regions, wherein the target region is a closed space that needs to maintain a constant temperature range, and the plurality of sub-regions are interconnected, and a refrigeration device is installed in each of the sub-regions, and the plurality of refrigeration devices lower the temperature of the target region by transmitting cold air to the plurality of sub-regions; The device control module is used to obtain the first temperature of each sub-area according to the first intelligent sensor, obtain the second temperature of each refrigeration device transmitting cold air to the corresponding sub-area according to the second intelligent sensor, and control the working states of the multiple refrigeration devices according to the multiple first temperatures and the multiple second temperatures, wherein the working states of the multiple refrigeration devices are controlled according to the multiple first temperatures and the multiple second temperatures, including the following steps: step S21, obtaining the first temperature of each sub-area, obtaining the highest temperature from the multiple first temperatures, comparing the highest temperature with a first threshold, if the highest temperature is greater than or equal to the first threshold, executing step S22, if the highest temperature is less than the first threshold, executing step S24; Step S22, obtaining the first refrigeration device and the corresponding first sub-area corresponding to the highest temperature, obtaining the working state of the first refrigeration device, if the working state is off, turning on the first refrigeration device, recording the turning-on time of the first refrigeration device, marking the first refrigeration device as the most recently turned-on device, and returning to the step S21, if the working state is on, obtaining the working states of all the refrigeration devices in the target area, calling all the refrigeration devices whose working state is off as off devices, and calculating and saving the cooling ratios of all the refrigeration devices to the first sub-area in advance; Step S23, obtaining a first cooling ratio of all the closed devices to the first sub-area, obtaining a maximum cooling ratio among all the first cooling ratios as the first maximum cooling ratio, obtaining a cooling device A corresponding to the first maximum cooling ratio, turning on the cooling device A corresponding to the first maximum cooling ratio, recording the turning-on time of the cooling device A, marking the cooling device A as the most recently turned-on device, and returning to step S21; Step S24, obtaining all the second temperatures, subtracting the corresponding second temperature from each of the first temperatures to obtain a plurality of differences, obtaining a minimum difference from the plurality of differences, and obtaining a second sub-region corresponding to the minimum difference; The data prediction module is used to obtain the daily energy consumption data of all the refrigeration equipment, the energy consumption data including water consumption and electricity consumption, use the energy consumption data as learning data to train the prediction model, and use the trained prediction model to predict the water consumption and electricity consumption required for a future preset period.

7. A storage medium, characterized in that: The storage medium stores program instructions, wherein when the program instructions are executed, the device where the storage medium is located is controlled to execute the method according to any one of claims 1 to 5.

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