Dehumidification control method and system of dehumidification power distribution cabinet and electronic equipment
By installing zoned dehumidification devices and drainage systems within the distribution cabinet, combined with remote monitoring and an emergency water collection tank, the problems of high power consumption and inaccurate humidity control in existing distribution cabinet dehumidification devices have been solved, achieving efficient and reliable dehumidification.
Patent Information
- Application Number
- CN202511098502.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-06
- Publication Date
- 2025-11-11
AI Technical Summary
Existing dehumidification devices in power distribution cabinets consume a lot of power, have low energy efficiency, and cannot accurately control the humidity of each functional room, resulting in a high risk of equipment getting damp.
Dehumidification devices are installed in the instrument room, busbar room, circuit breaker room, and cable room of the distribution cabinet. The bottom of the cable room is sealed with sealing material. Condensate is collected in conjunction with drainage pipes. Humidity is monitored in real time and the dehumidification devices are automatically controlled. Remote monitoring and alarm functions are provided. An emergency water collection tank and multi-level control strategies are used to deal with drainage abnormalities and dynamically adjust the dehumidification power.
Precise dehumidification was achieved, reducing the humidity inside the distribution cabinet, improving operational reliability, avoiding secondary damping and energy waste, and ensuring the stability and reliability of the equipment.
Smart Images
Figure CN120933778A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of dehumidification control, and in particular to a dehumidification control method, system and electronic equipment for a dehumidification distribution cabinet. Background Technology
[0002] Distribution cabinets are crucial power distribution equipment in power systems, and their safe and stable operation directly affects power supply quality and electricity safety. In southern my country, due to the humid climate, high humidity environments easily cause moisture and condensation on the internal components of distribution cabinets, seriously affecting equipment lifespan and operational safety. Therefore, the dehumidification problem of distribution cabinets urgently needs to be solved.
[0003] Existing technologies typically address humidity issues by installing dehumidification devices on the distribution cabinet, such as using air filters to introduce dry air into the cabinet or installing an environmental control cabinet within the distribution room. These dehumidification devices maintain a dry operating environment for the equipment by dehumidifying the air inside the distribution cabinet. Existing dehumidification methods for power distribution cabinets typically employ a holistic environmental dehumidification approach, which dehumidifies not only the power distribution facilities but also the entire power distribution room, resulting in high power consumption and low energy efficiency. This situation needs further improvement. Summary of the Invention
[0004] To address the issues of high power consumption and low energy efficiency in existing dehumidification distribution cabinets, this application provides a dehumidification control method, system, and electronic equipment for a dehumidification distribution cabinet, employing the following technical solution: In a first aspect, this application provides a dehumidification control method for a dehumidification distribution cabinet, which is applied to a novel dehumidification distribution cabinet. The distribution cabinet includes an instrument room, a busbar room, a circuit breaker room, and a cable room with built-in dehumidification devices. The cable room is located above a cable trench and its bottom is sealed with sealing material. A drainage pipe is installed inside the distribution cabinet. The drainage pipe is installed and fixed along the channel steel inside the distribution cabinet and is used to collect the condensate generated by each of the dehumidification devices and discharge it outdoors. The method includes the following steps: Real-time monitoring of the relative humidity in each functional room; The relative humidity of the target functional room is determined. The target functional room is any one of the instrument room, busbar room, circuit breaker room and cable room. When the relative humidity of the target functional room exceeds the preset upper limit, the dehumidification device of the target functional room is automatically started. When the relative humidity of the target functional room is lower than the preset lower limit, the dehumidification device of the target functional room is automatically stopped. The system collects and transmits the operating status and temperature and humidity data of the dehumidification device in the target functional room to the instrument room to realize remote monitoring and alarm functions.
[0005] By adopting the above technical solution, since the humidity values of the various functional compartments inside the distribution cabinet are often inconsistent, and cable trenches can easily allow moisture to enter the distribution cabinet, the power distribution equipment is prone to dampness. This application installs dehumidification devices in the instrument compartment, busbar compartment, circuit breaker compartment, and cable compartment of the distribution cabinet, and seals the bottom of the cable compartment with sealing material. At the same time, drainage pipes installed and fixed along the channel steel are installed inside the distribution cabinet to collect condensate. By monitoring the relative humidity of each functional compartment in real time, the corresponding dehumidification device is automatically activated when the relative humidity of the target functional compartment exceeds the preset upper limit value, and automatically stops when the relative humidity is lower than the preset lower limit value. The working status of the dehumidification device and temperature and humidity data are transmitted to the instrument compartment for remote monitoring. This application reduces the humidity inside the distribution cabinet from the source by combining the built-in dehumidification device with the sealing of the bottom of the cable compartment; the drainage pipes promptly discharge condensate to avoid secondary dampness; precise dehumidification is achieved by using regional real-time monitoring and automatic control; and the remote monitoring and alarm functions improve operational reliability.
[0006] Optionally, an emergency water collection tank is installed at the end of the drainage pipe, and the method further includes the following steps: Real-time monitoring of condensate flow rate in the drainage pipe; When the dehumidification device of the target functional room is detected to be activated, the amount of condensate generated in the target functional room is recorded. The presence of drainage abnormalities in the drainage pipe is determined by the ratio of the actual drainage rate to the amount of condensate produced. When an abnormal drainage is detected, a drainage abnormality alarm message is sent to the instrument room, and the following control strategy is executed: If the amount of condensate generated exceeds the preset liquid accumulation threshold, the system enters the dehumidification power adaptive adjustment mode, dynamically adjusting the power of the dehumidification device according to the condensate accumulation rate. If the drainage rate of the drainage pipe is detected to be lower than the normal value, the emergency water collection tank will be put into use to keep the dehumidification device running normally and issue a maintenance reminder message; when the liquid level in the emergency water collection tank reaches the warning value, the dehumidification device will be adjusted to the periodic operation mode.
[0007] By adopting the above technical solution, the condensate generated during the dehumidification process of the distribution cabinet needs to be discharged in a timely manner. However, the drainage pipe is prone to blockage or damage. If it is not detected and dealt with in time, the accumulated condensate will cause the equipment to become damp again. This application installs an emergency water collection tank at the end of the drainage pipe. By monitoring the condensate flow rate of the drainage pipe in real time and recording the condensate generation in the target functional room, the system determines whether the drainage system is abnormal based on the ratio of the actual drainage rate to the condensate generation. When a drainage abnormality is detected, the system immediately sends an alarm message to the instrument room and takes measures according to the type of abnormality. Corresponding control strategies: When the amount of condensate generated exceeds the preset accumulation threshold, the dehumidification power adaptive adjustment mode is entered, and the power of the dehumidification device is dynamically adjusted according to the condensate accumulation rate; when the drainage rate of the drainage pipe is lower than the normal value, the emergency water collection tank is activated and a maintenance reminder is issued; when the liquid level in the emergency water collection tank reaches the warning value, the dehumidification device is adjusted to a periodic operation mode; by monitoring the condensate flow rate in real time and establishing a drainage anomaly judgment mechanism, combined with the emergency water collection tank and multi-level control strategies, the continuity of the dehumidification function under abnormal operating conditions is ensured, and secondary damping caused by condensate accumulation is avoided.
[0008] Optionally, determining the relative humidity of the target functional room may also include the following steps: Detect the external ambient temperature and relative humidity, and obtain the external ambient dew point temperature; The wall temperature of the target functional room is detected and compared with the dew point temperature of the external environment; When the wall temperature is lower than the dew point temperature of the external environment, the dehumidification device of the target functional room is activated in advance for preventive dehumidification; Adjust the operating parameters of the dehumidification device according to the location characteristics of the target functional room.
[0009] By adopting the above technical solution, condensation easily forms on the cabinet wall when there is a large temperature difference between the inside and outside of the distribution cabinet, especially during the rainy season when the external air humidity and temperature are high, while the temperature of the distribution cabinet wall is low, making condensation very likely. This application monitors the external ambient temperature and humidity and the wall temperature of the target functional room in real time, calculates the external ambient dew point temperature and compares it with the wall temperature. When the wall temperature is detected to be lower than the external ambient dew point temperature, the system will start the dehumidification device of the target functional room in advance for preventive dehumidification, and dynamically adjust the operating parameters of the dehumidification device according to the location characteristics of the functional room, such as adjusting the dehumidification power and running time. By establishing a predictive control mechanism based on dew point temperature, preventive dehumidification before condensation is achieved, avoiding the passive mode of waiting for humidity to exceed the standard before starting dehumidification in the traditional solution, and effectively preventing the equipment from getting damp due to condensation.
[0010] Optionally, the operating parameters of the dehumidification device can be adjusted according to the location characteristics of the target functional room, specifically including the following steps: Acquire the relative positions and temperature and humidity data of each functional room; When the target functional room is a cable room, the humidity data of the cable trench is collected in real time. If the humidity data of the cable trench is detected to be increasing, the operating power of the dehumidification device in the cable room is increased. When the target functional room is an instrument room, temperature and humidity monitoring data of the area surrounding the control equipment are collected, and the operation sequence of the dehumidification device in the instrument room is adjusted according to the monitoring data. When the target functional room is a busbar room or a circuit breaker room, heat generation data during equipment operation is collected, and the operating parameters of the corresponding functional room dehumidification device are adjusted based on the heat generation data and temperature and humidity change trends.
[0011] By adopting the above technical solution, since the locations and functions of each functional room in the distribution cabinet are different, their humidity sources and variation patterns also vary significantly. It is difficult to meet the actual needs by using a uniform dehumidification strategy. This application establishes a differentiated dehumidification control strategy based on the relative position relationship and temperature and humidity data of each functional room. For the cable room, the humidity data of the cable trench is collected in real time, and the dehumidification power is increased in time when an upward trend in humidity is detected. For the instrument room, the temperature and humidity data of the area around the control equipment are collected in the key area, and the operation sequence of the dehumidification device is adjusted accordingly to ensure the operating environment of the critical equipment. For the busbar room and the circuit breaker room, the operating parameters of the dehumidification device are dynamically adjusted by combining the heat generation data of the equipment during operation and the temperature and humidity change trend. This achieves precise dehumidification control and avoids the problems of low dehumidification efficiency and energy waste caused by traditional solutions.
[0012] Optionally, the bottom of the distribution cabinet is also equipped with an air supply duct connected to an air filter, and the dehumidification device of the target functional room has a humidity sensor mode. The method further includes the following steps: When the dehumidification device in the target functional room malfunctions and fails to dehumidify, the mode of the dehumidification device is switched to the humidity sensor mode. When the dehumidification device detects that the relative humidity exceeds the preset upper limit, it activates the air filter and delivers dry air to the target functional room through the air supply duct. When the dehumidification device detects that the relative humidity is lower than the preset lower limit, it stops the operation of the air filter.
[0013] By adopting the above technical solution, this application sets up an air supply duct connected to the air filter at the bottom of the distribution cabinet, and adds a humidity sensor mode for the dehumidification device as a backup solution. When the dehumidification device in the target functional room is detected to be malfunctioning and unable to work properly, the system automatically switches it to the humidity sensor mode, at which time the dehumidification device is only used as a humidity detection unit. When the relative humidity is detected to exceed the preset upper limit, the air filter is activated to deliver dry air to the target functional room through the air supply duct for dehumidification. After the relative humidity drops to the preset lower limit, the air filter automatically stops operating. By establishing a dual dehumidification mechanism, the dehumidification function can still be maintained when the main dehumidification device fails, avoiding the system reliability risks that may be caused by a single dehumidification method, and ensuring the stability of the internal environment of the distribution cabinet.
[0014] Optionally, the method may also include the following steps: Real-time monitoring of temperature and humidity data from the exhaust vents above the target functional chamber; The air supply rate of the air filter is adjusted according to the temperature and humidity data. When the humidity of the discharged gas is detected to be greater than the preset humidity threshold, the air supply rate is reduced. The system detects humidity changes in adjacent functional rooms, and adjusts the air supply parameters of the air supply duct when a sudden change in humidity is detected in an adjacent functional room.
[0015] By adopting the above technical solution, this application dynamically adjusts the air supply parameters by monitoring the temperature and humidity data of the exhaust vents above the target functional room in real time. The system continuously collects temperature and humidity data at the exhaust vents. When the humidity of the discharged gas is detected to be greater than the preset humidity threshold, the air supply rate is appropriately reduced to ensure sufficient dehumidification. At the same time, the system monitors the humidity changes of adjacent functional rooms. When a sudden change in humidity is detected in an adjacent functional room, the air supply parameters of the air supply duct are adjusted in a timely manner, such as adjusting the air supply angle and air volume. By establishing an air supply control mechanism based on multi-point temperature and humidity data, the precise adjustment of air supply parameters is achieved, avoiding the low dehumidification efficiency and moisture cross-contamination problems caused by traditional fixed air supply methods.
[0016] Optionally, the method may also include the following steps: Real-time acquisition of temperature and humidity data of the target functional room and temperature data of the dehumidification device; When the temperature of the dehumidifier exceeds the preset temperature threshold, the air filter is activated for auxiliary dehumidification, and the air supply power of the air filter is dynamically adjusted according to the temperature change trend of the dehumidifier. When the temperature of the dehumidifier continuously exceeds the preset temperature threshold for a preset duration, it switches to the alternating operation mode, and determines the ratio of the working time of the dehumidifier and the air filter according to the rate of temperature and humidity change of the target functional room. In the alternating operation mode, the temperature change trend of the dehumidifier and the air filter is recorded, and the working time of the other device is extended when the temperature of either device is abnormal. When the temperature of the dehumidifier returns to normal and the relative humidity of the target functional room is lower than the preset lower limit, the alternating operation mode is exited.
[0017] By adopting the above technical solution, this application establishes a temperature protection and control mechanism by real-time acquisition of temperature and humidity data of the target functional room and temperature data of the dehumidifier. When the temperature of the dehumidifier exceeds the preset temperature threshold, the system immediately activates the air filter for auxiliary dehumidification and dynamically adjusts the air supply power of the air filter according to the temperature change trend of the dehumidifier. If the temperature of the dehumidifier continues to exceed the preset time, it switches to a rotating operation mode, and determines the ratio of the working time of the two devices by the rate of temperature and humidity change of the target functional room. During the rotating operation, the system continuously records the temperature change trend of the two devices, and automatically extends the working time of the other device when an abnormal temperature is detected in either device. Finally, when the temperature of the dehumidifier returns to normal and the relative humidity of the target functional room meets the standard, the rotating operation mode is exited. This achieves temperature management and life protection of the dehumidifier, avoiding the frequent failures caused by overheating of the equipment in traditional solutions.
[0018] Secondly, this application provides a dehumidification control system for a dehumidification distribution cabinet, comprising: A dehumidifying distribution cabinet, comprising an instrument room, a busbar room, a circuit breaker room, and a cable room, wherein the cable room is located above a cable trench and its bottom is sealed with sealing material; Dehumidification devices are respectively installed in the instrument room, busbar room, circuit breaker room and cable room. Each dehumidification device has a built-in humidity sensor for real-time collection of relative humidity data. Drainage pipes are installed and fixed along the channel steel inside the distribution cabinet to collect condensate generated by each of the dehumidification devices and discharge it outdoors. A controller, electrically connected to the dehumidifier, is used to control the start and stop of the dehumidifier based on the relative humidity data. The remote monitoring module, located in the instrument room, is used to receive the operating status and temperature and humidity data of the dehumidification devices in each functional room and to issue alarms.
[0019] Thirdly, this application provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the dehumidification control method of the dehumidification distribution cabinet described above.
[0020] In summary, this application includes at least one of the following beneficial technical effects: 1. This application installs dehumidification devices in the instrument room, busbar room, circuit breaker room, and cable room of the distribution cabinet, and seals the bottom of the cable room with sealing material. Simultaneously, drainage pipes installed along the channel steel inside the distribution cabinet collect condensate. By monitoring the relative humidity of each functional room in real time, the corresponding dehumidification device automatically starts when the relative humidity of the target functional room exceeds the preset upper limit and automatically stops when the relative humidity falls below the preset lower limit. The operating status of the dehumidification device and temperature and humidity data are transmitted to the instrument room for remote monitoring. This application reduces the humidity inside the distribution cabinet from the source by combining built-in dehumidification devices with sealing the bottom of the cable room; it avoids secondary damping by promptly draining condensate through drainage pipes; it achieves precise dehumidification through zoned real-time monitoring and automatic control; and it improves operational reliability by incorporating remote monitoring and alarm functions. 2. This application installs an emergency water collection tank at the end of the drainage pipe. By monitoring the condensate flow rate of the drainage pipe in real time and recording the condensate generation in the target functional room, the system determines whether the drainage system is abnormal based on the ratio of the actual drainage rate to the condensate generation. When a drainage abnormality is detected, the system immediately sends an alarm message to the instrument room and takes corresponding control strategies according to the type of abnormality: when the condensate generation exceeds the preset accumulation threshold, the system enters the dehumidification power adaptive adjustment mode, dynamically adjusting the power of the dehumidification device based on the condensate accumulation rate; when the drainage rate of the drainage pipe is lower than the normal value, the emergency water collection tank is activated and a maintenance prompt is issued; when the liquid level in the emergency water collection tank reaches the warning value, the dehumidification device is adjusted to a periodic operation mode. By monitoring the condensate flow rate in real time and establishing a drainage abnormality judgment mechanism, combined with the emergency water collection tank and multi-level control strategies, the continuity of the dehumidification function under abnormal operating conditions is ensured, and secondary damping of the equipment due to condensate accumulation is avoided. 3. This application includes an air supply duct connected to an air filter at the bottom of the distribution cabinet, and adds a humidity sensor mode as a backup for the dehumidification device. When a malfunction is detected in the dehumidification device of the target functional room, the system automatically switches it to the humidity sensor mode, where the dehumidification device is used only as a humidity detection unit. When the relative humidity exceeds the preset upper limit, the air filter is activated to deliver dry air to the target functional room through the air supply duct for dehumidification. Once the relative humidity drops to the preset lower limit, the air filter automatically stops operating. By establishing a dual dehumidification mechanism, the dehumidification function can still be maintained when the main dehumidification device fails, avoiding the system reliability risks that may be caused by a single dehumidification method and ensuring the stability of the internal environment of the distribution cabinet. Attached Figure Description
[0021] Figure 1 This is an infrastructure layout diagram of a prior art 10kV distribution cabinet according to an embodiment of this application; Figure 2These are a front view and a partial sectional view of the novel dehumidification distribution cabinet according to an embodiment of this application; Figure 3 This is a schematic diagram of the dehumidification device installed in the power distribution cabinet according to an embodiment of this application; Figure 4 This is a flowchart illustrating a dehumidification control method for a dehumidification distribution cabinet according to an embodiment of this application. Figure 5 This is a schematic diagram illustrating the dehumidification efficiency of various dehumidification methods in the embodiments of this application; Figure 6 This is a schematic diagram of the emergency water collection process in a dehumidification control method for a dehumidification distribution cabinet according to an embodiment of this application; Figure 7 This is a schematic diagram of the preventive dehumidification process in a dehumidification control method for a dehumidification distribution cabinet according to an embodiment of this application. Figure 8 This is a schematic diagram of the structure for filtering and drying air dehumidification according to an embodiment of this application; Figure 9 This is a schematic diagram of the process for filtering, drying, and dehumidifying air according to an embodiment of this application. Figure 1 ; Figure 10 This is a schematic diagram of the process for filtering, drying, and dehumidifying air according to an embodiment of this application. Figure 2 ; Figure 11 This is a schematic diagram illustrating the process of the dehumidifier and air filter working alternately in an embodiment of this application; Figure 12 This is a schematic diagram of a dehumidification control system for a dehumidification distribution cabinet according to an embodiment of this application; Figure 13 This is an internal structural diagram of an electronic device according to an embodiment of this application. Detailed Implementation
[0022] The terminology used in the following embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. As used in the specification and appended claims of this application, the singular expressions “a,” “an,” “the,” “the,” “the,” and “this” are intended to include the plural expressions as well, unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this application refers to any or all possible combinations including one or more of the listed items.
[0023] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.
[0024] The embodiments of this application will now be described in further detail with reference to the accompanying drawings.
[0025] Switchgear is a crucial piece of power distribution equipment in a power system, and its safe and stable operation directly affects power supply quality and electricity safety. Taking a 10kV switchgear as an example, the current infrastructure layout of a 10kV switchgear is as follows: Figure 1 As shown, the top of the cabinet is approximately 2.3 meters above the floor of the power distribution room, and the bottom is tightly connected to the edge of the 10kV cable trench. The cabinet is divided into an instrument room, busbar room, circuit breaker room, and cable room, but lacks moisture-proof features, resulting in varying degrees of dampness in each functional area. The cable room and busbar room, located above the cable trench, are particularly affected by moisture. After heavy rains, a significant amount of rainwater or seepage accumulates in the lower-lying areas of the power distribution room, leading to frequent water accumulation in the cable trench. Even during the dry season, the cable trench takes the longest to dry.
[0026] This application stipulates that during the manufacturing of the distribution cabinet, moisture-proof sealing of the area below the cable compartment should be considered first. Then, small dehumidification devices should be installed in each functional area inside the cabinet, along with suitable power supply and drainage pipes. Equipment and wiring conduits should be installed along the channel steel inside the distribution cabinet and fixed with guide rails.
[0027] Firstly, this application provides a dehumidification control method for a dehumidification distribution cabinet, applicable to a novel dehumidification distribution cabinet, such as... Figure 2 As shown, the distribution cabinet includes an instrument compartment with a built-in dehumidifier, a busbar compartment, a circuit breaker compartment, and a cable compartment. The cable compartment is located above the cable trench, and its bottom is sealed with a sealing material. Specifically, in this embodiment, aluminum corner strips are first installed at the bottom of the cabinet to divide the area. The joints between the aluminum corner strips and larger gaps are pre-sealed with expanding foam. Then, a self-leveling polymer material is used for sealing. The polymer material has self-leveling properties and can automatically penetrate into various gaps and holes. During the solidification process, the polymer material undergoes expansion and gelation reactions, using the extrusion force generated by the expansion to form a sealing system in the longitudinal direction, achieving airtight sealing. The amount of polymer material used is calculated based on the sealing area, the sealing layer thickness is 1 cm, and the material usage is calculated at 0.0012 kg per cubic centimeter. For gaps where cables pass through, fireproof putty is used for sealing, and aluminum foil tape is used for surface sealing to ensure that the sealing agent does not leak out.
[0028] like Figure 3 As shown, for clarity, Figure 3Each distribution cabinet features two dehumidifiers as examples. The cabinet contains drainage pipes installed and fixed along the internal steel channels to collect condensate from each dehumidifier. The outlet of the drainage pipes connects to an outdoor collection well for centralized condensate drainage. The dehumidifiers are powered by 220V AC power, drawn from the DC power supply to the instrument room, protected by miniature circuit breakers, and then connected to each dehumidifier, ensuring reliable grounding. During construction or maintenance, external power can be used.
[0029] Reference Figure 4 The method includes the following steps: S410: Real-time monitoring of relative humidity in each functional room.
[0030] In this embodiment, temperature and humidity are monitored using intelligent dehumidifiers installed in each functional room. These intelligent dehumidifiers incorporate high-precision temperature and humidity sensors, sampling once per minute with a measurement accuracy of ±2%RH and a measurement range covering 0-100%RH. The monitoring data is transmitted in real-time to the instrument room controller via an RS485 bus.
[0031] Specifically, one intelligent dehumidifier is installed in each of the instrument room, busbar room, circuit breaker room, and cable room. Each dehumidifier has independent temperature and humidity acquisition capabilities, stores the collected data locally, and establishes a 24-hour historical data curve. Simultaneously, all dehumidifiers are networked via an RS485 bus to communicate with the controller in the instrument room, enabling centralized data monitoring.
[0032] S420. Determine the relative humidity of the target functional room. When the relative humidity of the target functional room exceeds the preset upper limit, automatically start the dehumidification device of the target functional room. When the relative humidity of the target functional room is lower than the preset lower limit, automatically stop the dehumidification device of the target functional room.
[0033] The target functional room is any one of the following: instrument room, busbar room, circuit breaker room, and cable room.
[0034] In this embodiment, the system automatically controls the start and stop of the dehumidification device based on preset humidity thresholds. For example, the preset upper limit is 50% relative humidity and the lower limit is 45% relative humidity. These two thresholds are determined based on the humidity requirements for the long-term reliable operation of the power distribution equipment. When the relative humidity of the target functional room exceeds the upper limit, the corresponding dehumidification device automatically starts; when the relative humidity drops below the lower limit, the dehumidification device automatically stops.
[0035] Specifically, the system employs a three-stage control logic: in the first stage, when the relative humidity is below 45%, the dehumidifier stops operating and enters standby mode; in the second stage, when the relative humidity is between 45% and 50%, the dehumidifier maintains its current operating state; and in the third stage, when the relative humidity exceeds 50%, the dehumidifier starts operating. This control method avoids frequent start-stop operations of the dehumidifier, extending the equipment's lifespan.
[0036] S430: Collects and transmits the operating status and temperature and humidity data of the dehumidification device in the target functional room to the instrument room to realize remote monitoring and alarm functions.
[0037] Each dehumidifier is connected to the instrument room via a power cord, which transmits the dehumidifier's operating status and temperature and humidity data.
[0038] In this embodiment, the dehumidifier's operating status information includes running status, fault status, water immersion status, and high temperature status. This status information, along with temperature and humidity data, is transmitted to the instrument room controller via an RS485 bus. The controller processes and stores the received data and then uploads it to the remote monitoring platform via a gateway.
[0039] Specifically, the system can employ a tiered alarm mechanism. For example, for general alarms such as relative humidity exceeding 50%, the system records the alarm information and displays it via indicator lights. For critical alarms such as equipment malfunctions or water immersion alarms, in addition to recording the alarm information, the system will also trigger an audible and visual alarm and push the alarm information to management personnel through the remote monitoring platform. After the alarm is cleared, the system automatically records the clearing time and relevant status parameters.
[0040] This application reduces humidity inside the distribution cabinet at its source by combining a built-in dehumidifier with a sealed bottom for the cable compartment; it prevents secondary damping by promptly draining condensate through drainage pipes; it achieves precise dehumidification through zoned monitoring and automatic control; and it improves operational reliability by incorporating remote monitoring and alarms. (Refer to...) Figure 5 Compared with natural ventilation, overall dehumidification equipment, and air filtration to dry the gas, this application reduces humidity at a faster rate and with a more obvious effect.
[0041] In one embodiment, refer to Figure 6 An emergency water collection tank is installed at the end of the drainage pipe. The method also includes the following steps: S610, Real-time monitoring of condensate flow rate in drainage pipes.
[0042] In this embodiment, condensate flow rate refers to the amount of water passing through the drainage pipe per unit time, measured in milliliters per hour. A flow sensor is installed at the end of the drainage pipe for real-time monitoring.
[0043] Specifically, the system establishes a time-series-based flow monitoring database. The database records include three basic fields: acquisition time, instantaneous flow rate, and cumulative flow rate. The controller analyzes the changing trends of the flow data to calculate the average drainage rate, which serves as the basis for determining the operational status of the drainage system.
[0044] S620. When the dehumidification device of the target functional room is detected to be activated, record the amount of condensate generated in the target functional room.
[0045] In this embodiment, condensate generation refers to the amount of condensate produced during the operation of the dehumidifier. The system has a pre-established dehumidifier operating parameter table, which includes the theoretical condensate generation under different environmental conditions.
[0046] Specifically, the system uses a segmented accumulation method to record condensate volume. When the dehumidifier starts, the controller begins accumulating the flow data of the corresponding branch pipe. The independent drainage contribution of each functional compartment is identified through a flow sensor array and recorded in a dedicated operating data table. This table establishes the correlation between dehumidifier operating time, ambient humidity, and condensate volume for subsequent analysis and control optimization.
[0047] S630. Determine whether there is a drainage abnormality in the drainage pipe based on the ratio of the actual drainage rate to the amount of condensate produced.
[0048] In this embodiment, drainage anomaly refers to a state where the actual drainage capacity of the drainage pipe is lower than the system's requirements. The system establishes a drainage rate evaluation model to compare the measured drainage rate with the condensate production in real time. When the ratio deviates from the normal range, it is determined to be a drainage anomaly.
[0049] When a drainage anomaly is detected, step S640 is executed to send a drainage anomaly alarm message to the instrument room, and the following control strategy is implemented: S650: If the amount of condensate generated exceeds the preset liquid accumulation threshold, the dehumidification power adaptive adjustment mode is entered, and the power of the dehumidification device is dynamically adjusted according to the condensate accumulation rate.
[0050] In this embodiment, adaptive adjustment refers to automatically adjusting the operating power of the dehumidifier based on abnormal drainage conditions. The system establishes a power adjustment model based on fuzzy control, with the input variables being the condensate accumulation rate and ambient humidity, and the output variable being the dehumidification power adjustment amount.
[0051] S660. If the drainage rate of the drainage pipe is detected to be lower than the normal value, the emergency water collection tank is put into use to keep the dehumidification device running normally and issue a maintenance reminder message; when the liquid level of the emergency water collection tank reaches the warning value, the dehumidification device is adjusted to the periodic operation mode.
[0052] In this embodiment, the emergency water collection tank serves as a backup drainage facility for the dehumidification system of the distribution cabinet and is equipped with a liquid level sensor. The periodic operation mode refers to the dehumidification device starting and stopping at fixed time intervals to reduce the condensate generation rate.
[0053] Specifically, when the emergency water collection tank is activated, the system executes the following control procedure: First, the drainage channel is switched to the emergency water collection tank; then, the water level in the collection tank is monitored in real time, and the rate of increase in water level is recorded; when the water level reaches the warning value, the dehumidifier is automatically switched to periodic operation mode. At the same time, the system calculates the estimated time for the water collection tank to fill, allowing sufficient processing time for maintenance work.
[0054] In one embodiment, refer to Figure 7 Determining the relative humidity of the target functional room also includes the following steps: S710: Detects external ambient temperature and relative humidity, and obtains the external ambient dew point temperature.
[0055] In this embodiment, the external ambient temperature and relative humidity refer to the air temperature and humidity parameters inside the power distribution room.
[0056] S720: Detects the wall temperature of the target functional room and compares it with the dew point temperature of the external environment.
[0057] In this embodiment, the wall surface temperature refers to the surface temperature of the metal casing of each functional compartment of the distribution cabinet.
[0058] Specifically, the system establishes a wall temperature distribution map, dividing each functional room into three temperature measurement zones: upper, middle, and lower. Temperature distribution data is acquired through multi-point temperature measurement, and an interpolation algorithm is used to generate a complete temperature field.
[0059] S730. When the wall temperature is lower than the external ambient dew point temperature, the dehumidification device of the target functional room shall be activated in advance for preventive dehumidification.
[0060] In this embodiment, preventative dehumidification refers to a control strategy that prevents condensation by activating the dehumidification device in advance before actual condensation occurs on the wall surface. The system establishes a start-up judgment model based on temperature difference, triggering preventative dehumidification when the wall temperature is lower than the dew point temperature by a set amount.
[0061] Specifically, when the difference between the wall temperature and the dew point temperature is within the range of 2°C to 5°C, the dehumidifier operates at low power; when the difference is less than 2°C, the dehumidifier switches to standard power operation; when multiple temperature measuring points are detected to have a small temperature difference at the same time, the dehumidifiers in the corresponding areas are started simultaneously.
[0062] S740. Adjust the operating parameters of the dehumidifier according to the location characteristics of the target functional room.
[0063] Specifically, the relative positions and temperature and humidity data of each functional room are acquired. When the target functional room is a cable room, the humidity data of the cable trench is collected in real time. If an upward trend in the humidity data of the cable trench is detected, the operating power of the dehumidification device in the cable room is increased. When the target functional room is an instrument room, the temperature and humidity monitoring data of the area surrounding the control equipment are collected. The operating sequence of the dehumidification device in the instrument room is adjusted according to the monitoring data. For example, the 24 hours are divided into three periods: key dehumidification, regular dehumidification, and standby. The operating time of the dehumidification device in different periods is dynamically adjusted according to the humidity conditions of each area. When the target functional room is a busbar room or circuit breaker room, the heat generation data of the equipment during operation is collected. The operating parameters of the dehumidification device in the corresponding functional room are adjusted according to the heat generation data and the temperature and humidity change trends. For example, a correlation table between equipment heat generation and dehumidification demand is established, the temperature is divided into multiple intervals, and the operating parameters of the dehumidification device, including dehumidification cycle, power, and start / stop frequency, are adjusted according to different intervals.
[0064] In one embodiment, such as Figure 8 As shown, the bottom of the distribution cabinet is also equipped with an air supply duct connected to the air filter, and the dehumidification device in the target functional room has a humidity sensor mode. The air supply duct delivers air from the bottom of the distribution cabinet to the cable room. The existing dehumidification device can be interconnected with the air filter as a humidity sensor to achieve the function of sensing and controlling the start and stop of the main unit.
[0065] Reference Figure 9 The method also includes the following steps: S910. When the dehumidification device in the target functional room malfunctions and cannot dehumidify, switch the dehumidification device mode to humidity sensor mode.
[0066] S920. When the dehumidifier detects that the relative humidity exceeds the preset upper limit, it activates the air filter and delivers dry air to the target functional room through the air supply duct.
[0067] S930. When the dehumidifier detects that the relative humidity is lower than the preset lower limit, the air filter stops operating.
[0068] In one embodiment, dehumidification through the air supply duct may result in insufficient mixing of humid and dry gases. As the gases are discharged upwards, they may seep into other electrical distribution cabinet functional areas, causing the humidity in other areas to decrease more slowly in the short term.
[0069] Reference Figure 10 The method also includes the following steps: S1010: Real-time monitoring of temperature and humidity data from the exhaust vents above the target functional room.
[0070] Specifically, the air supply parameters are dynamically adjusted by monitoring the temperature and humidity data of the exhaust vents above the target functional room in real time.
[0071] S1020. Adjust the air supply rate of the air filter according to the temperature and humidity data. When the humidity of the exhaust gas is detected to be greater than the preset humidity threshold, reduce the air supply rate.
[0072] In this embodiment, the air supply rate refers to the fan speed of the air filter, which is controlled by a frequency converter. The system establishes an air supply rate adjustment model based on the exhaust humidity, and maps the exhaust humidity to the air supply rate. The preset humidity threshold is 65%RH, which is used as the trigger point for adjusting the air supply rate.
[0073] Specifically, when the exhaust humidity is below 50%RH, the fan operates at the rated speed; when the humidity is between 50%RH and 65%RH, the fan speed decreases linearly; when the humidity exceeds 65%RH, the fan speed drops to the minimum limit; when the humidity starts to decrease, the fan speed gradually recovers. The system uses the PID control algorithm to achieve smooth adjustment of the air supply rate, avoiding the impact of frequent speed changes on the equipment.
[0074] S1030. Detect the humidity change in the adjacent functional room. When a sudden change in the humidity of the adjacent functional room is detected, adjust the air supply parameters of the air supply duct.
[0075] In this embodiment, the adjacent functional room refers to the four functional rooms adjacent to the target functional room, namely, the upper, lower, left, and right ones. The sudden change in humidity is defined as the relative humidity change amplitude exceeding 10%RH within 15 minutes.
[0076] Specifically, when a sudden change in humidity is detected in a certain functional room, the system automatically analyzes the humidity response characteristics of the surrounding functional rooms and adjusts the air supply parameters of the corresponding area. The air supply parameters include three dimensions: wind speed, wind direction, and air supply time. The system performs linkage control according to the preset parameter adjustment rules to reduce the problem of cross-humidity.
[0077] In one embodiment, referring to Figure 11 , the method further includes the following steps: S1110. Real-time collect the temperature and humidity data of the target functional room and the temperature data of the dehumidification device.
[0078] S1120. When the temperature of the dehumidification device exceeds the preset temperature threshold, start the air filter for auxiliary dehumidification, and dynamically adjust the air supply power of the air filter according to the temperature change trend of the dehumidification device.
[0079] In this embodiment, the preset temperature threshold refers to the upper temperature limit for the safe operation of the equipment. The temperature change trend is obtained by calculating the temperature change amount per unit time and is used to predict the temperature trend of the equipment. The air supply power adjustment range is divided into four gears: low speed, medium speed, high speed, and full speed, corresponding to different temperature change intervals. The system obtains the target air supply power under the current working condition by looking up the table.
[0080] Specifically, the system establishes a temperature-based air supply control strategy table, dividing the dehumidifier temperature into multiple intervals, each corresponding to a set of air supply parameter configurations. When the dehumidifier temperature exceeds the warning value, the controller first activates the air filter at a low speed, and then adjusts the air supply power according to the temperature change trend. If the temperature continues to rise, the air supply power is gradually increased; if the temperature begins to drop, the current power is maintained. For example, in one operation, when the compressor temperature reached the warning value, the system activated the air filter to run at a low speed. After observing for 5 minutes and finding that the temperature was still rising, the air supply power was then adjusted to a medium speed.
[0081] S1130 When the temperature of the dehumidifier continuously exceeds the preset temperature threshold for a preset duration, switch to alternating operation mode and determine the ratio of the working time of the dehumidifier and the air filter according to the rate of temperature and humidity change of the target functional room.
[0082] In this embodiment, the preset duration refers to the cumulative time during which the temperature of the dehumidifier continuously exceeds the threshold. The rate of change of temperature and humidity refers to the amount of change in temperature and humidity per unit time, divided into three ranges: rapid change, medium-speed change, and slow change. The working time ratio refers to the ratio of the operating time of the two devices, which is obtained by looking up a table to obtain a baseline value, and then dynamically adjusted according to the real-time operating conditions.
[0083] Specifically, the system establishes a dynamic allocation mechanism for operating time. First, a table calculating the rate of temperature and humidity change is created to record short-term trends in the functional room's temperature and humidity. Then, based on the rate of change, a baseline table of operating time is consulted to obtain the initial operating time allocation. Finally, the time ratio is fine-tuned based on real-time operating parameters. For example, during a switching process, the system detects that the temperature change rate is in the rapid range and the humidity change rate is in the medium range. Based on this, a allocation scheme biased towards the air filter's operating time is selected, determining the operating time ratio of the dehumidifier to the air filter to be 2:3.
[0084] S1140. In alternating operation mode, record the temperature change trend of the dehumidifier and air filter, and extend the working time of the other device when the temperature of either device is abnormal.
[0085] S1150 When the temperature of the dehumidifier returns to normal and the relative humidity of the target functional room is lower than the preset lower limit, exit the alternating operation mode.
[0086] It should be understood that the sequence number of each step in the above embodiments does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.
[0087] Secondly, this application provides a dehumidification control system for a dehumidification distribution cabinet. The dehumidification control system of the dehumidification distribution cabinet of this application will be described below in conjunction with the dehumidification control method of the dehumidification distribution cabinet described above.
[0088] Reference Figure 12 A dehumidification control system for a dehumidification distribution cabinet, comprising: The dehumidification distribution cabinet includes an instrument room, a busbar room, a circuit breaker room, and a cable room. The cable room is located above the cable trench, and its bottom is sealed with sealing material. Dehumidification devices are installed in the instrument room, busbar room, circuit breaker room and cable room respectively. The dehumidification devices are equipped with humidity sensors to collect relative humidity data in real time. Drainage pipes are installed and fixed along the channel steel inside the distribution cabinet to collect condensate generated by each dehumidification device and discharge it outdoors. The controller, electrically connected to the dehumidifier, is used to control the start and stop of the dehumidifier based on relative humidity data. The remote monitoring module, located in the instrument room, is used to receive the operating status and temperature and humidity data of the dehumidification devices in each functional room and to issue alarms.
[0089] In one embodiment, this application provides an electronic device, which may be a server, and its internal structure diagram may be as follows: Figure 13 As shown, the electronic device includes a processor, memory, and network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores data. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements a dehumidification control method for a dehumidification distribution cabinet.
[0090] Those skilled in the art will understand that Figure 13 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the electronic device to which the present application is applied. The specific electronic device may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements.
[0091] In one embodiment, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.
[0092] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.
[0093] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. A dehumidification control method for a dehumidification distribution cabinet, characterized in that, This invention relates to a new type of dehumidifying distribution cabinet, which includes an instrument room, a busbar room, a circuit breaker room, and a cable room with built-in dehumidifying devices. The cable room is located above a cable trench and its bottom is sealed with sealing material. A drainage pipe is installed inside the distribution cabinet and is installed and fixed along the channel steel inside the distribution cabinet. The drainage pipe is used to collect the condensate generated by each of the dehumidifying devices and discharge it outdoors. The method includes the following steps: Real-time monitoring of the relative humidity in each functional room; The relative humidity of the target functional room is determined. The target functional room is any one of the instrument room, busbar room, circuit breaker room and cable room. When the relative humidity of the target functional room exceeds the preset upper limit, the dehumidification device of the target functional room is automatically started. When the relative humidity of the target functional room is lower than the preset lower limit, the dehumidification device of the target functional room is automatically stopped. The system collects and transmits the operating status and temperature and humidity data of the dehumidification device in the target functional room to the instrument room to realize remote monitoring and alarm functions.
2. The dehumidification control method for the dehumidification distribution cabinet according to claim 1, characterized in that, An emergency water collection tank is installed at the end of the drainage pipe, and the method also includes the following steps: Real-time monitoring of condensate flow rate in the drainage pipe; When the dehumidification device of the target functional room is detected to be activated, the amount of condensate generated in the target functional room is recorded. The presence of drainage abnormalities in the drainage pipe is determined by the ratio of the actual drainage rate to the amount of condensate produced. When an abnormal drainage is detected, a drainage abnormality alarm message is sent to the instrument room, and the following control strategy is executed: If the amount of condensate generated exceeds the preset liquid accumulation threshold, the system enters the dehumidification power adaptive adjustment mode, dynamically adjusting the power of the dehumidification device according to the condensate accumulation rate. If the drainage rate of the drainage pipe is detected to be lower than the normal value, the emergency water collection tank will be put into use to keep the dehumidification device running normally and issue a maintenance reminder message; when the liquid level in the emergency water collection tank reaches the warning value, the dehumidification device will be adjusted to the periodic operation mode.
3. The dehumidification control method for the dehumidification distribution cabinet according to claim 1, characterized in that, Determining the relative humidity of the target functional room also includes the following steps: Detect the external ambient temperature and relative humidity, and obtain the external ambient dew point temperature; The wall temperature of the target functional room is detected and compared with the dew point temperature of the external environment; When the wall temperature is lower than the dew point temperature of the external environment, the dehumidification device of the target functional room is activated in advance for preventive dehumidification; Adjust the operating parameters of the dehumidification device according to the location characteristics of the target functional room.
4. The dehumidification control method for the dehumidification distribution cabinet according to claim 3, characterized in that, Based on the location characteristics of the target functional room, the operating parameters of the dehumidification device are adjusted, specifically including the following steps: Acquire the relative positions and temperature and humidity data of each functional room; When the target functional room is a cable room, the humidity data of the cable trench is collected in real time. If the humidity data of the cable trench is detected to be increasing, the operating power of the dehumidification device in the cable room is increased. When the target functional room is an instrument room, temperature and humidity monitoring data of the area surrounding the control equipment are collected, and the operation sequence of the dehumidification device in the instrument room is adjusted according to the monitoring data. When the target functional room is a busbar room or a circuit breaker room, heat generation data during equipment operation is collected, and the operating parameters of the corresponding functional room dehumidification device are adjusted based on the heat generation data and temperature and humidity change trends.
5. The dehumidification control method for the dehumidification distribution cabinet according to claim 1, characterized in that, The bottom of the power distribution cabinet is also equipped with an air supply duct connected to an air filter, and the dehumidification device of the target functional room has a humidity sensor mode. The method also includes the following steps: When the dehumidification device in the target functional room malfunctions and fails to dehumidify, the mode of the dehumidification device is switched to the humidity sensor mode. When the dehumidification device detects that the relative humidity exceeds the preset upper limit, it activates the air filter and delivers dry air to the target functional room through the air supply duct. When the dehumidification device detects that the relative humidity is lower than the preset lower limit, it stops the operation of the air filter.
6. The dehumidification control method for the dehumidification distribution cabinet according to claim 5, characterized in that, The method also includes the following steps: Real-time monitoring of temperature and humidity data from the exhaust vents above the target functional chamber; The air supply rate of the air filter is adjusted according to the temperature and humidity data. When the humidity of the discharged gas is detected to be greater than the preset humidity threshold, the air supply rate is reduced. The system detects humidity changes in adjacent functional rooms, and adjusts the air supply parameters of the air supply duct when a sudden change in humidity is detected in an adjacent functional room.
7. The dehumidification control method for the dehumidification distribution cabinet according to claim 5, characterized in that, The method also includes the following steps: Real-time acquisition of temperature and humidity data of the target functional room and temperature data of the dehumidification device; When the temperature of the dehumidifier exceeds the preset temperature threshold, the air filter is activated for auxiliary dehumidification, and the air supply power of the air filter is dynamically adjusted according to the temperature change trend of the dehumidifier. When the temperature of the dehumidifier continuously exceeds the preset temperature threshold for a preset duration, it switches to the alternating operation mode, and determines the ratio of the working time of the dehumidifier and the air filter according to the rate of temperature and humidity change of the target functional room. In the alternating operation mode, the temperature change trend of the dehumidifier and the air filter is recorded, and the working time of the other device is extended when the temperature of either device is abnormal. When the temperature of the dehumidifier returns to normal and the relative humidity of the target functional room is lower than the preset lower limit, the alternating operation mode is exited.
8. A dehumidification control system for a dehumidification distribution cabinet, characterized in that, include: A dehumidifying distribution cabinet, comprising an instrument room, a busbar room, a circuit breaker room, and a cable room, wherein the cable room is located above a cable trench and its bottom is sealed with sealing material; Dehumidification devices are respectively installed in the instrument room, busbar room, circuit breaker room and cable room. Each dehumidification device has a built-in humidity sensor for real-time collection of relative humidity data. Drainage pipes are installed and fixed along the channel steel inside the distribution cabinet to collect condensate generated by each of the dehumidification devices and discharge it outdoors. A controller, electrically connected to the dehumidifier, is used to control the start and stop of the dehumidifier based on the relative humidity data. The remote monitoring module, located in the instrument room, is used to receive the operating status and temperature and humidity data of the dehumidification devices in each functional room and to issue alarms.
9. An electronic device, characterized in that, It includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the dehumidification control method of the dehumidification distribution cabinet according to any one of claims 1-7.