State monitoring management method and system for high-voltage power cabinet

Abstract

The embodiment of the invention relates to the technical field of electrical engineering, and discloses a high-voltage power cabinet state monitoring method and system.The method comprises the steps that firstly, humidity data inside and outside a cabinet body are obtained in real time through a humidity sensor, and when the internal humidity exceeds the standard and the difference between the internal humidity and the external humidity is small, a dual-channel synchronous hot air dehumidification mode is started; hot air is injected into the dehumidification pipeline through the first conveying equipment and the second conveying equipment, and a three-dimensional dehumidification airflow field is formed. In the operation process, the real-time load values and the load difference value of the two devices are continuously monitored, and when the load of any device reaches a threshold value firstly, the operation state of the device is dynamically adjusted through an intelligent algorithm, and load balancing between the devices is achieved. The technical problem that traditional timing fan dehumidification cannot guarantee the dehumidification effect is effectively solved, and intelligent guarantee is provided for reliable operation of high-voltage power equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, and particularly relates to a method and system for monitoring and managing the state of a high-voltage power cabinet. Background Art

[0002] In the field of power system operation, as a core power distribution device, the internal environmental stability of a high-voltage power cabinet is directly related to the safety of the device and the reliability of the system. Due to the long-term operation of the power cabinet under high voltage and large current, the internal temperature and humidity are prone to fluctuate due to the heat generated by electrical components and external environmental changes. Especially in a high-humidity environment, condensation is likely to occur, leading to safety hazards such as a decrease in insulation performance, corrosion of metal components, and partial discharge. Traditional power cabinet monitoring schemes mostly focus on humidity threshold alarms or timed fan dehumidification control, which cannot guarantee the dehumidification effect, resulting in the ineffective guarantee of the safety of the power cabinet. Summary of the Invention

[0003] The main object of the present invention is to provide a method and system for monitoring and managing the state of a high-voltage power cabinet, aiming to solve the technical problem in the prior art that the dehumidification effect cannot be guaranteed, resulting in the ineffective guarantee of the safety of the power cabinet.

[0004] To achieve the above object, in a first aspect, an embodiment of the present application provides a method for monitoring and managing the state of a high-voltage power cabinet, which is applied to a power cabinet system. The power cabinet system includes a power cabinet main body, a first dehumidification pipeline and a second dehumidification pipeline provided inside the power cabinet main body, and a humidity monitor provided on one side of the power cabinet main body. The method includes: Obtaining a first humidity value and a second humidity value sensed by the humidity monitor, where the first humidity value is the humidity of the air inside the power cabinet main body, and the second humidity value is the humidity of the air outside the power cabinet main body; When the first humidity value is greater than a first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to a second humidity threshold, controlling a first conveying device and a second conveying device to respectively input dehumidified hot air into the first dehumidification pipeline and the second dehumidification pipeline; During the dehumidification process, continuously judging the working load conditions of the first conveying device and the second conveying device, where the working load conditions include a working load value and a load difference; Controlling the target conveying device whose working load value first reaches a set first load threshold to suspend operation or reduce power, where the target conveying device is one of the first conveying device and the second conveying device. In a possible implementation manner, a exhaust fan is provided between the humidity monitor and the power cabinet main body. The obtaining the first humidity value and the second humidity value sensed by the humidity monitor includes: When the exhaust fan is started, obtain the monitoring data sensed by the humidity monitor to obtain a first humidity value; wherein, the power of the exhaust fan is greater than the power during normal exhaust; When the exhaust fan is turned off, obtain the monitoring data sensed by the humidity monitor to obtain a second humidity value.

[0005] In a possible implementation, the humidity monitor includes a first electrode plate, a second electrode plate, and a moisture-absorbing material disposed between the first electrode plate and the second electrode plate. The moisture-absorbing material is porous silica gel or molecular sieve. Obtaining the monitoring data sensed by the humidity monitor to obtain a first humidity value includes: In response to the humid air inside the main body of the power cabinet being absorbed by the moisture-absorbing material, obtain the capacitance sensing value of the humidity monitor; Input the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain a first humidity value.

[0006] In a possible implementation, the inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain a first humidity value includes: Input the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain a first humidity prediction value; Correct the first humidity prediction value according to the second humidity value and the power of the exhaust fan to obtain a first humidity value.

[0007] In a possible implementation, the correcting the first humidity prediction value according to the second humidity value and the power of the exhaust fan to obtain a first humidity value includes: Input the second humidity value and the power of the exhaust fan into a humidity correction model to obtain the first humidity value, where the humidity correction model satisfies the following expression: ; wherein, H1 is the corrected first humidity value, H g is the humidity prediction value output by the humidity prediction model, H2 is the second humidity value, H0 is the reference value of the external humidity, P is the current power of the exhaust fan, P0 is the reference power of the exhaust fan, and K1 and K2 are correction coefficients respectively.

[0008] In a possible implementation, after controlling the target conveying device that first reaches the set first load threshold to pause working, it further includes: When the load difference between the first conveying device and the second conveying device is reduced to the second load threshold, control the target conveying device to replace the other conveying device to continue working to balance the use loads of the first conveying device and the second conveying device; or, Control the first conveying device and the second conveying device to work alternately in a preset cyclic rule to balance the usage loads of the first conveying device and the second conveying device.

[0009] In a possible implementation manner, the workload value includes the current working temperatures of the first conveying device and the second conveying device. Controlling the target conveying device whose workload value first reaches the set first load threshold to pause working or reduce the power, includes: Control the target conveying device among the first conveying device and the second conveying device whose current working temperature first reaches the first temperature threshold to pause working, and keep the target conveying device among the first conveying device and the second conveying device whose current working temperature has not reached the first temperature threshold to continue working.

[0010] In a possible implementation manner, the workload value includes the current working temperatures of the first conveying device and the second conveying device. Controlling the target conveying device whose workload value first reaches the set first load threshold to pause working or reduce the power, includes: Control the target conveying device among the first conveying device and the second conveying device whose current working temperature first reaches the first temperature threshold to reduce the power, and control the target conveying device among the first conveying device and the second conveying device whose current working temperature has not reached the first temperature threshold to increase the power.

[0011] In a possible implementation manner, after obtaining the first humidity value and the second humidity value sensed by the humidity monitor, it further includes: When the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is greater than the second humidity threshold, exhaust the moisture inside the main body of the power cabinet through the exhaust fan.

[0012] In a second aspect, an embodiment of the present application further provides a power cabinet system, including: a memory and a processor, where the memory is used to store program codes; the processor is used to call the program codes to execute the method as described in the first aspect.

[0013] Different from the prior art, a method for monitoring and managing the state of a high-voltage power cabinet provided by an embodiment of the present application realizes intelligent control of the humidity environment of the power cabinet through a collaborative mechanism of humidity monitoring inside and outside the power cabinet, dual-pipeline collaborative dehumidification, and dynamic load regulation. The method first obtains the humidity data inside and outside the cabinet in real time through humidity sensors. When the internal humidity exceeds the standard and the humidity difference between the inside and outside is small, a hot-air dehumidification mode with synchronous dual channels is started, and hot air is injected into the dehumidification pipeline through the first conveying device and the second conveying device respectively to form a three-dimensional dehumidification airflow field. During operation, the real-time load values and load differences of the two devices are continuously monitored. When the load of any one device reaches the threshold first, its operating state is dynamically adjusted through an intelligent algorithm to achieve load balancing between the devices. It effectively solves the technical problem that traditional timed fan dehumidification cannot guarantee the dehumidification effect, and provides intelligent guarantee for the reliable operation of high-voltage power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0015] Figure 1 It is a schematic structural diagram of a power cabinet system in some embodiments of the present application; Figure 2 It is a schematic flowchart of a method for monitoring and managing the state of a high-voltage power cabinet in some embodiments of the present application; Figure 3 It is a schematic flowchart of a method for monitoring and managing the state of a high-voltage power cabinet in some other embodiments of the present application; Figure 4 It is a schematic hardware structure diagram of a power cabinet system in some embodiments of the present application.

[0016] The realization of the object of the present invention, functional features and advantages will be further described in conjunction with the embodiments and with reference to the drawings. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indication will also change accordingly.

[0019] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, "and / or" throughout the text includes three scenarios. Taking A and / or B as an example, it includes the technical solution of A, the technical solution of B, and the technical solution that both A and B are satisfied at the same time. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0020] In the field of power system operation, as a core power distribution device, the internal environmental stability of high-voltage power cabinets is directly related to equipment safety and system reliability. Since power cabinets are in a high-voltage and large-current working state for a long time, the internal temperature and humidity are prone to fluctuate due to the heat generation of electrical components and external environmental changes. Especially in a high-humidity environment, condensation is likely to occur, leading to safety hazards such as a decrease in insulation performance, corrosion of metal components, and partial discharge. Traditional power cabinet monitoring schemes mostly focus on humidity threshold alarms or timed fan dehumidification control, which cannot guarantee the dehumidification effect, resulting in the safety of power cabinets not being effectively guaranteed.

[0021] In view of the above problems, the present application proposes a method for monitoring and managing the state of high-voltage power cabinets, as Figures 1-3 shown. Hereinafter, taking the power cabinet system executing the method for monitoring and managing the state of high-voltage power cabinets as an example for illustration, as Figure 1 shown, the power cabinet system of the present application includes a power cabinet main body 100, a first dehumidification pipeline 200 and a second dehumidification pipeline 300 provided inside the power cabinet main body, a humidity monitor 400 provided on one side of the power cabinet main body, and an exhaust fan 500 is provided between the humidity monitor 400 and the power cabinet main body 100. Thus, when the exhaust fan 500 is started, the air inside the power cabinet main body 100 blows towards the humidity monitor 400. At this time, the monitoring data sensed by the humidity monitor 400 is the humidity of the air inside the power cabinet main body. When the exhaust fan 500 is closed, the humidity monitor 400 is exposed to the external air of the power cabinet main body. At this time, the monitoring data sensed by the humidity monitor 400 is the humidity of the external air of the power cabinet main body.

[0022] Moreover, corresponding first conveying device 600 and second conveying device 700 are respectively provided on the first dehumidification pipeline 200 and the second dehumidification pipeline 300. The conveying device can provide air flow power, such as inputting hot air flow into the first dehumidification pipeline 200 and the second dehumidification pipeline 300 for condensation dehumidification. The first dehumidification pipeline 200 and the second dehumidification pipeline 300 can be air flow circulation pipelines.

[0023] It can be understood that the parts of the first dehumidification pipeline 200 and the second dehumidification pipeline 300 inside the power cabinet main body 100 are arranged in the area close to the bottom, which is convenient for condensate collection; the parts of the first dehumidification pipeline 200 and the second dehumidification pipeline 300 outside the power cabinet main body 100 are arranged in the area close to the top, which is convenient for the installation of the conveying device.

[0024] It should be noted that although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order from here. Please refer to the appendix Figure 2 The method includes the following steps S100 - step S400: Step S100, obtain the first humidity value and the second humidity value sensed by the humidity monitor, where the first humidity value is the humidity of the air inside the power cabinet main body, and the second humidity value is the humidity of the air outside the power cabinet main body; In one embodiment, step S100: obtain the first humidity value and the second humidity value sensed by the humidity monitor, includes: S110, when the exhaust fan is started, obtain the monitoring data sensed by the humidity monitor to get the first humidity value; wherein, the power of the exhaust fan is greater than the power during normal exhaust; S120, when the exhaust fan is turned off, obtain the monitoring data sensed by the humidity monitor to get the second humidity value.

[0025] Specifically, when collecting the humidity of the air inside the power cabinet main body, the control unit sends a PWM modulation signal to increase the power of the exhaust fan to 150% of the rated value (for example, from 200W to 300W), and keep this power running for 60 seconds to increase the air exchange rate inside the cabinet and form a sufficient convection environment, so that the air discharged by the exhaust fan is the air inside the power cabinet main body; then collect the humidity data once every 5 seconds, and take the weighted average of the last 8 times of data as the first humidity value after continuously collecting 12 times.

[0026] After collecting the humidity of the air inside the power cabinet main body, immediately turn off the exhaust fan and wait for the air state inside and outside the cabinet to stabilize. For example, read the data of the humidity sensor again after 1 minute as the second humidity value.

[0027] In this way, by setting a humidity monitor and an exhaust fan, the detection of the air humidity inside and outside the power cabinet main body can be completed, greatly reducing the monitoring cost.

[0028] It can be understood that the humidity monitor can adopt humidity monitors based on different principles, such as capacitive, resistive or optical ones.

[0029] To avoid the influence of temperature on humidity monitoring and improve the accuracy of humidity data monitoring, in one embodiment, the humidity monitor adopts a capacitive sensor, where the humidity monitor includes a first electrode plate, a second electrode plate, and a moisture-absorbing material disposed between the first electrode plate and the second electrode plate. The moisture-absorbing material can be porous silica gel or molecular sieve or other materials with moisture-absorbing properties.

[0030] Thus, obtaining the first humidity value from the monitoring data sensed by the humidity monitor includes: in response to the humid air inside the main body of the power cabinet being absorbed by the moisture-absorbing material, obtaining the capacitance sensing value of the humidity monitor; inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain the first humidity value.

[0031] Specifically, when it is necessary to monitor the air humidity inside the main body of the power cabinet, after starting the exhaust fan to fully absorb the humid air inside the main body of the power cabinet by the moisture-absorbing material, obtain the capacitance sensing value of the humidity monitor, and then input the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain the first humidity value.

[0032] It should be noted that the training process of the humidity prediction model is prior art. For example, in the embodiment of the present application, first, a 20% - 95%RH gradient (interval 5%RH) is set in the environmental chamber, and the temperature is controlled at 25°C ± 0.5°C; then, a standard dew point meter (accuracy ±0.2%RH) is used as a reference to synchronously collect the output value of the capacitance sensor; 100 repeated measurements are performed at each humidity point to construct a training set containing 16,000 groups of data; finally, an LSTM neural network is used to establish a non-linear mapping model. The finally obtained humidity prediction model is (C≥16.4pF), where, is the humidity value, with the unit of %, C is the capacitance value, with the unit of pF.

[0033] In other embodiments, the relationship between the capacitance value and the humidity value can also be approximated as a linear mapping model, so as to facilitate the calculation of the humidity value and reduce the computing load of the processor.

[0034] In addition, the calculation process of the second humidity value is similar to the above, that is, when the exhaust fan is closed, input the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain the second humidity value.

[0035] It can be understood that when actually detecting the first humidity value, although the exhaust fan is started, the hygroscopic material of the humidity monitor will still absorb the humidity of a certain amount of external air. Therefore, the predicted value calculated by the humidity prediction model is greater than the actual value. Therefore, it is necessary to correct the first humidity predicted value to ensure the accuracy of the first humidity value.

[0036] In an embodiment, to further improve the accuracy of humidity data monitoring, inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain a first humidity value includes: inputting the capacitance sensing value of the humidity monitor into the pre-trained humidity prediction model to obtain a first humidity predicted value; correcting the first humidity predicted value according to the second humidity value and the power of the exhaust fan to obtain the first humidity value.

[0037] Specifically, first input the capacitance sensing value of the humidity monitor into the pre-trained humidity prediction model to obtain a first humidity predicted value, and then correct the first humidity predicted value according to the second humidity value and the power of the exhaust fan to obtain the first humidity value.

[0038] It should be noted that the greater the humidity of the air outside the main body of the power cabinet, the greater the probability that the hygroscopic material of the humidity monitor absorbs the outside wet air, that is, the less accurate the first humidity predicted value is, and the greater the correction amount required. In addition, the greater the power of the exhaust fan, the lower the probability that the hygroscopic material of the humidity monitor absorbs the outside wet air, that is, the more accurate the first humidity predicted value is, and the smaller the correction amount required.

[0039] Based on this, in the embodiment of the present application, the first humidity predicted value is corrected by the external air humidity (i.e., the second humidity value) and the power of the exhaust fan to obtain the first humidity value, which can reduce the interference of the external environment on the internal humidity monitoring and improve the accuracy of humidity data.

[0040] In an embodiment, the correcting the first humidity predicted value according to the second humidity value and the power of the exhaust fan to obtain the first humidity value includes: Inputting the second humidity value and the power of the exhaust fan into a humidity correction model to obtain the first humidity value, where the humidity correction model satisfies the following expression: ; where, H1 is the corrected first humidity value, H g is the humidity predicted value output by the humidity prediction model, H2 is the second humidity value, H0 is the reference value of the external humidity, P is the current power of the exhaust fan, P0 is the reference power of the exhaust fan, and K1 and K2 are correction coefficients respectively.

[0041] Specifically, the greater the external humidity, the humidity predicted value H gThe greater it is than the actual value, so a correction amount related to the external humidity needs to be subtracted, that is, the greater the correction amount to be subtracted. The greater the power of the exhaust fan, the lower the probability of absorbing external humid air, and the humidity predicted value H g is closer to the actual value, so the correction amount to be subtracted is smaller.

[0042] It should be noted that the correction coefficients K1 and K2 can be determined based on the influence weights of the external humidity and the exhaust fan power on humidity monitoring. For example, when the influence of the exhaust fan power on the monitoring of the first humidity value is not considered, K2 can be assigned a value of 0. It can also be determined based on the control of the magnitude of the first humidity value. For example, by reasonably controlling the values of the correction coefficients K1 and K2, the value of the first humidity value can be controlled within a reasonable range.

[0043] Step S200: When the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to the second humidity threshold, control the first conveying device and the second conveying device to input dehumidified hot air into the first dehumidification pipeline and the second dehumidification pipeline respectively; After monitoring the humidity of the air inside the main body of the power cabinet (i.e., the first humidity value) and the humidity of the air outside the main body of the power cabinet (i.e., the second humidity value), by comparing the first humidity value, the second humidity value with the set humidity threshold, it is determined whether the humidity inside the main body of the power cabinet exceeds the standard, so as to provide accurate data support for subsequent humidity management.

[0044] Specifically, when the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to the second humidity threshold, it indicates that the air humidity inside the main body of the power cabinet is relatively high, and the air humidity outside the main body of the power cabinet is also relatively high. In this case, relying solely on the exhaust fan for dehumidification cannot achieve the effect of effective dehumidification. The reason is that after the exhaust fan discharges the internal humid air, the external high-humidity air will quickly enter the power cabinet, resulting in the inability to effectively reduce the internal humidity. In the embodiment of the present application, by controlling the first conveying device 600 and the second conveying device 700, dehumidified hot air is respectively input into the first dehumidification pipeline and the second dehumidification pipeline, so that the humid air inside the main body of the power cabinet condenses on the surface of the dehumidification pipeline, thereby achieving the effect of reducing the humidity inside the power cabinet. And, continuously monitor the humidity values inside and outside the main body of the power cabinet. If the condition of "the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to the second humidity threshold" is met, continuously control the first conveying device 600 and the second conveying device 700 to respectively input dehumidified hot air into the first dehumidification pipeline and the second dehumidification pipeline to continuously condense the moisture until the internal humidity drops to a safe range.

[0045] During the dehumidification process, the input volume of dehumidified hot air can also be controlled to dynamically match the humidity change inside the power cabinet, ensuring the accuracy and efficiency of humidity management. For example, when the internal humidity is higher than the target range, increase the input volume of dehumidified hot air to accelerate the dehumidification speed. When the internal humidity is lower than the target range, stop or minimize the input volume of dehumidified hot air to save energy.

[0046] In other embodiments, if the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is greater than the second humidity threshold, it indicates that the air humidity inside the main body of the power cabinet is relatively high, but the air humidity outside the main body of the power cabinet is relatively low. In this case, the moisture inside the main body of the power cabinet can be discharged through the exhaust fan without starting the first conveying device and the second conveying device to input dehumidified hot air. In this way, by discharging moisture through the exhaust fan, the humidity inside the power cabinet can be quickly reduced, while saving energy and equipment operation costs.

[0047] Step S300: During the dehumidification process, the working load conditions of the first conveying device and the second conveying device are judged in real time, and the working load conditions include the working load value and the load difference. The working load value can be the current working temperature of the first conveying device and the second conveying device, or the current cumulative working duration of the first conveying device and the second conveying device. Correspondingly, the load difference can be the difference between the current working temperature of the first conveying device and the current working temperature of the second conveying device; or the difference between the current cumulative working durations.

[0048] It can be understood that high temperature will cause the performance of internal components of the equipment (such as motors and bearings) to decline and the operating efficiency to decrease. Long-term high-temperature operation will accelerate the aging of the equipment and shorten the service life of the equipment. In addition, long-term operation will cause the internal components of the equipment (such as motors, bearings, and belts) to wear more severely and the performance to decline. The longer the cumulative operating time of the equipment, the higher the required maintenance frequency and cost.

[0049] Therefore, in one embodiment, the current working temperatures of the first conveying device and the second conveying device are judged in real time during the dehumidification process to provide real-time data basis for subsequent dehumidification management.

[0050] Step S400: Control the target conveying device whose working load value first reaches the set first load threshold to suspend operation or reduce power, and the target conveying device is one of the first conveying device and the second conveying device.

[0051] In one embodiment, when the current operating temperature of any one of the first conveying device and the second conveying device first reaches the first temperature threshold, that is, the temperature of the target conveying device is too high, if it continues to operate, its operating efficiency and service life will be seriously affected. At this time, the target conveying device pauses operation, and the target conveying device whose current operating temperature in the first conveying device and the second conveying device has not reached the first temperature threshold continues to operate, ensuring the continuity of the dehumidification process. That is to say, control the conveying device whose temperature first reaches the temperature threshold to pause operation, and control the conveying device whose temperature has not reached the temperature threshold to continue to operate. The conveying device can also be controlled by the temperature rise rate. For example, control the conveying device with a faster temperature rise rate to pause operation.

[0052] In other embodiments, the output power of the target conveying device can be reduced, and the output power of the other conveying device can be increased. The target conveying device reduces the output power to reduce the heat generation, and at the same time increases the output power of the other conveying device to ensure the overall operating efficiency of the system (so as not to reduce the dehumidification efficiency).

[0053] In other embodiments, after controlling the target conveying device that first reaches the set first load threshold to pause operation, it further includes: when the load difference between the first conveying device and the second conveying device is reduced to the second load threshold, controlling the target conveying device to replace the other conveying device to continue operating to balance the usage loads of the first conveying device and the second conveying device; or, controlling the first conveying device and the second conveying device to alternately operate in a cyclic manner according to a preset cyclic rule to balance the usage loads of the first conveying device and the second conveying device.

[0054] Specifically, after controlling the target conveying device that first reaches the set first load threshold to pause operation, when the load difference (such as the working temperature difference or the cumulative duration difference) between the first conveying device and the second conveying device is reduced to the second load threshold, it indicates that the operating states of the two devices tend to be balanced. Since the target conveying device has rested for a period of time, at this time, the target conveying device can be controlled to restart and replace the other conveying device to continue operating, while temporarily shutting down the other conveying device. In this way, it can be ensured that the load difference between the two conveying devices remains within a reasonable range, thereby balancing the usage loads of the first conveying device and the second conveying device.

[0055] Or, after controlling the target conveying device that first reaches the set first load threshold to pause operation, when the load difference (such as the working temperature difference or the cumulative duration difference) between the first conveying device and the second conveying device is reduced to the second load threshold, it indicates that the operating states of the two devices tend to be balanced. At this time, a cyclic alternating operation rule can be set to control the two devices to alternately operate, such as alternating every 30 minutes. In this way, the usage loads of the first conveying device and the second conveying device are balanced.

[0056] In this way, when dehumidifying by continuously using the dehumidification pipeline, controlling the dynamic balance of the loads of the first conveying device and the second conveying device can ensure that the system dehumidifies continuously and stably.

[0057] Based on this, a method for monitoring and managing the state of a high-voltage power cabinet provided by an embodiment of the present application realizes intelligent control of the humidity environment of the power cabinet through a collaborative mechanism of humidity monitoring inside and outside the power cabinet, dual-pipeline collaborative dehumidification, and dynamic load regulation. The method first obtains humidity data inside and outside the cabinet in real time through humidity sensors. When the internal humidity exceeds the standard and the humidity difference between the inside and outside is small, a hot-air dehumidification mode with synchronous dual channels is started, and hot air is injected into the dehumidification pipeline through the first conveying device and the second conveying device respectively to form a three-dimensional dehumidification airflow field. During operation, the real-time load values and load differences of the two devices are continuously monitored. When the load of any one device reaches the threshold first, its operating state is dynamically adjusted through an intelligent algorithm to achieve load balancing between the devices. This effectively solves the technical problem that traditional timed fan dehumidification cannot guarantee the dehumidification effect and provides intelligent guarantee for the reliable operation of high-voltage power equipment.

[0058] An embodiment of the present application also provides a power cabinet system, which includes a memory 1000 and a processor 2000. Among them, the memory 1000 is used to store program codes, and the processor 2000 is used to call the program codes to execute the method as described above.

[0059] Among them, the processor 2000 is used to provide computing and control capabilities to control the power cabinet system to perform corresponding tasks. For example, the processor 2000 controls the power cabinet system to execute the method for monitoring and managing the state of the high-voltage power cabinet in any of the above method embodiments. The method includes: obtaining a first humidity value and a second humidity value sensed by the humidity monitor, where the first humidity value is the humidity of the air inside the main body of the power cabinet, and the second humidity value is the humidity of the air outside the main body of the power cabinet; when the first humidity value is greater than a first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to a second humidity threshold, controlling the first conveying device and the second conveying device to respectively input dehumidifying hot air into the first dehumidification pipeline and the second dehumidification pipeline; during dehumidification, judging in real time the working load conditions of the first conveying device and the second conveying device, where the working load conditions include working load values and load differences; controlling the target conveying device whose working load value first reaches a set first load threshold to suspend work or reduce power, where the target conveying device is one of the first conveying device and the second conveying device.

[0060] The processor 2000 may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), a hardware chip, or any combination thereof; it may also be a Digital Signal Processing (DSP), an Application Specific Integrated Circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a generic array logic (GAL), or any combination thereof.

[0061] As a non-transitory computer-readable storage medium, the memory 1000 can be used to store non-transitory software programs, non-transitory computer-executable programs, and modules, such as the program instructions / modules corresponding to the state monitoring and management method of the high-voltage power cabinet in the embodiments of the present application. By running the non-transitory software programs, instructions, and modules stored in the memory 1000, the processor 2000 can implement the state monitoring and management method of the high-voltage power cabinet in any of the above method embodiments.

[0062] Specifically, the memory 1000 may include volatile memory (VM), such as random access memory (RAM); the memory 1000 may also include non-volatile memory (NVM), such as read-only memory (ROM), flash memory, a hard disk drive (HDD), or a solid-state drive (SSD), or other non-transitory solid-state storage devices; the memory 1000 may further include a combination of the above types of memories.

[0063] In summary, the power cabinet system of the present application adopts the technical solution of any of the above embodiments of the state monitoring and management method of the high-voltage power cabinet. Therefore, it has at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0064] Embodiments of the present application also provide a computer-readable storage medium, such as a memory including program code, and the above program code can be executed by a processor to complete the state monitoring and management method of the high-voltage power cabinet in the above embodiments. For example, the computer-readable storage medium can be a Read-Only Memory (ROM), a Random Access Memory (RAM), a Compact Disc Read-Only Memory (CDROM), magnetic tape, floppy disk, and optical data storage device, etc.

[0065] Embodiments of the present application also provide a computer program product, which includes one or more pieces of program code, and the program code is stored in a computer-readable storage medium. The processor of the power cabinet system reads the program code from the computer-readable storage medium, and the processor executes the program code to complete the steps of the state monitoring and management method of the high-voltage power cabinet provided in the above embodiments.

[0066] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above embodiments can be completed by hardware, or can be completed by hardware related to program code. The program can be stored in a computer-readable storage medium, and the above-mentioned storage medium can be a read-only memory, a magnetic disk, or an optical disc, etc.

[0067] It should be noted that the device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0068] Through the description of the above embodiments, those of ordinary skill in the art can clearly understand that each embodiment can be implemented by means of software plus a general hardware platform, and of course, it can also be implemented by hardware. Those of ordinary skill in the art can understand that all or part of the processes of implementing the method in the above embodiments can be completed by instructing related hardware through a computer program. The program can be stored in a computer-readable storage medium. When the program is executed, it can include the processes of the embodiments of the above methods. Among them, the storage medium can be a magnetic disk, an optical disc, a Read-Only Memory (ROM), or a Random Access Memory (RAM), etc.

[0069] The above are only the preferred embodiments of the present invention, and do not thus limit the patent scope of the present invention. Any equivalent structural transformation made by using the content of the specification and drawings of the present invention under the inventive concept of the present invention, or any direct / indirect application in other related technical fields shall be included within the patent protection scope of the present invention.

Claims

1. A method for monitoring and managing the state of a high-voltage power cabinet, which is applied to a power cabinet system, characterized in that, The power cabinet system includes a power cabinet main body, a first dehumidification duct and a second dehumidification duct arranged inside the power cabinet main body, and a humidity monitor arranged on one side of the power cabinet main body. The method includes: Obtaining a first humidity value and a second humidity value sensed by the humidity monitor. The first humidity value is the humidity of the air inside the power cabinet main body, and the second humidity value is the humidity of the air outside the power cabinet main body; When the first humidity value is greater than a first humidity threshold and the difference between the first humidity value and the second humidity value is less than or equal to a second humidity threshold, controlling a first conveying device and a second conveying device to respectively input dehumidified hot air into the first dehumidification duct and the second dehumidification duct; During the dehumidification process, judging the working load conditions of the first conveying device and the second conveying device in real time. The working load conditions include a working load value and a load difference; Controlling the target conveying device whose working load value first reaches a set first load threshold to suspend work or reduce its power. The target conveying device is one of the first conveying device and the second conveying device.

2. The state monitoring and management method of the high-voltage power cabinet according to claim 1, wherein, A exhaust fan is arranged between the humidity monitor and the power cabinet main body. The obtaining of the first humidity value and the second humidity value sensed by the humidity monitor includes: When the exhaust fan is started, obtaining the monitoring data sensed by the humidity monitor to get the first humidity value. Wherein, the power of the exhaust fan is greater than the power during normal exhaust; When the exhaust fan is turned off, obtaining the monitoring data sensed by the humidity monitor to get the second humidity value.

3. The state monitoring and management method of the high-voltage power cabinet according to claim 2, characterized in that, The humidity monitor includes a first electrode plate, a second electrode plate, and a moisture-absorbing material arranged between the first electrode plate and the second electrode plate. The moisture-absorbing material is porous silica gel or molecular sieve. The obtaining of the first humidity value by obtaining the monitoring data sensed by the humidity monitor includes: In response to the wet air inside the power cabinet main body being absorbed by the moisture-absorbing material, obtaining the capacitance sensing value of the humidity monitor; Inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain the first humidity value.

4. The state monitoring and management method of the high-voltage power cabinet according to claim 3, characterized in that, The inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain the first humidity value includes: Inputting the capacitance sensing value of the humidity monitor into a pre-trained humidity prediction model to obtain a first humidity prediction value; Correcting the first humidity prediction value according to the second humidity value and the power of the exhaust fan to obtain the first humidity value.

5. The state monitoring and management method of the high-voltage power cabinet according to claim 4, characterized in that, The correcting the first humidity prediction value according to the second humidity value and the power of the exhaust fan to obtain the first humidity value includes: Inputting the second humidity value and the power of the exhaust fan into a humidity correction model to obtain the first humidity value, where the humidity correction model satisfies the following expression: ； Among them, H1 is the corrected first humidity value, H g is the humidity estimated value output by the humidity estimation model, H2 is the second humidity value, H0 is the reference value of the external humidity, P is the current power of the exhaust fan, P0 is the reference power of the exhaust fan, and K1 and K2 are correction coefficients respectively.

6. The state monitoring and management method of the high-voltage power cabinet according to claim 1, characterized in that, After controlling the target conveying device that first reaches the set first load threshold to suspend work, it further includes: When the load difference between the first conveying device and the second conveying device is reduced to a second load threshold, controlling the target conveying device to replace the other conveying device to continue working to balance the usage loads of the first conveying device and the second conveying device; or, Control the first conveying device and the second conveying device to work alternately in a preset cyclic rule to balance the usage loads of the first conveying device and the second conveying device.

7. The state monitoring and management method of the high-voltage power cabinet according to claim 1, characterized in that, The working load value includes the current working temperatures of the first conveying device and the second conveying device. Controlling the target conveying device whose working load value first reaches the set first load threshold to suspend work or reduce power includes: Controlling the target conveying device whose current working temperature in the first conveying device and the second conveying device first reaches the first temperature threshold to suspend work, and keeping the target conveying device whose current working temperature in the first conveying device and the second conveying device has not reached the first temperature threshold to continue working.

8. The state monitoring and management method of the high-voltage power cabinet according to claim 1, characterized in that, The working load value includes the current working temperatures of the first conveying device and the second conveying device. Controlling the target conveying device whose working load value first reaches the set first load threshold to suspend work or reduce power includes: Controlling the target conveying device whose current working temperature in the first conveying device and the second conveying device first reaches the first temperature threshold to reduce power, and controlling the target conveying device whose current working temperature in the first conveying device and the second conveying device has not reached the first temperature threshold to increase power.

9. The state monitoring and management method of the high-voltage power cabinet according to claim 1, characterized in that, After obtaining the first humidity value and the second humidity value sensed by the humidity monitor, it further includes: When the first humidity value is greater than the first humidity threshold and the difference between the first humidity value and the second humidity value is greater than the second humidity threshold, exhausting the moisture inside the main body of the power cabinet through an exhaust fan.

10. A power cabinet system, characterized in that, It includes: A memory and a processor, the memory is used to store program codes; The processor is used to call the program codes to execute the method according to any one of claims 1 to 9.

Images