Anti-condensation control method and system for power ring main unit

Abstract

The invention belongs to the technical field of power equipment protection, and relates to an anti-condensation control method and system for a power ring main unit, and the method comprises the steps: collecting the internal temperature and humidity data of power equipment in real time through a high-precision temperature and humidity sensor, controlling the energy storage and release of a phase change energy storage module according to the collected temperature and humidity data, and controlling the energy storage and release of a phase change energy storage module according to the environment change. The rotating speed of a fan and the opening degree of a ventilation valve are adjusted, air circulation is achieved, when it is detected that the humidity in the equipment is too high, a humidity adjusting module is started, the humidity is reduced through a moisture absorption technology, and water vapor condensation is avoided; according to real-time data and a preset algorithm, a temperature and humidity adjusting strategy is optimized, accurate control over the internal environment of the equipment is achieved, and safe operation is ensured. The stability of temperature and humidity regulation and control in the power ring main unit can be effectively improved, the dehumidification efficiency is improved, and the system is particularly suitable for condensation prevention and control of an outdoor high-voltage ring main unit and has the advantages of being efficient, capable of saving energy, intelligent in cooperation and high in reliability.

Description

Technical Field

[0001] This invention relates to the field of power equipment protection technology, specifically to a method and system for preventing condensation in a power ring main unit. Background Technology

[0002] As a key piece of equipment in power distribution networks, power ring main units operate in complex outdoor environments for extended periods. Condensation inside these units can easily lead to decreased insulation, corrosion of metal components, and even short-circuit faults. Current anti-condensation technologies for power ring main units primarily rely on passive methods such as heating dehumidification and ventilation. These methods have limited effectiveness and high energy consumption when dealing with rapidly changing environments and loads, and cannot achieve dynamic and precise temperature and humidity control.

[0003] To address this, invention patent CN119627647A discloses an intelligent temperature-controlled ring main unit anti-condensation protection device, comprising a protective outer shell for the cabinet. Each of the four side walls of the protective outer shell is equipped with an adjustment unit, each adjustment unit including an adjustment plate. An internal ventilation component connects the adjustment plate to the cavity of the protective outer shell. Several anti-condensation units are rotatably connected to the adjustment plate. This dual-mode approach achieves both heat dissipation and anti-condensation effects, while also allowing the device to automatically adjust according to the actual ambient temperature and humidity.

[0004] The above-mentioned technical solutions have made progress in preventing condensation and automatically regulating temperature and humidity, but the following technical problems still exist: (1) The response speed and accuracy of temperature and humidity control are insufficient, especially when the environment changes rapidly, it is impossible to make timely and effective adjustments; (2) The collaborative work between system components is relatively weak, making it difficult to achieve global intelligent control and adapt to complex dynamic changes; (3) The energy consumption is relatively high, especially in high humidity or harsh environmental conditions, it still relies on traditional heating or ventilation devices, resulting in low system efficiency.

[0005] In view of this, it is very necessary to provide a method and system for preventing condensation in power ring main units to solve the above-mentioned defects in the prior art. Summary of the Invention

[0006] The purpose of this invention is to solve the problems of lagging temperature and humidity control, poor system linkage and high energy consumption, and to address the technical defects of the existing technology, to provide a method and system for preventing condensation in power ring network cabinets, so as to solve the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention provides a method for preventing condensation in a power ring main unit, comprising the following steps: Step S1: Temperature and humidity data acquisition. Real-time temperature and humidity data inside the power equipment are acquired using high-precision temperature and humidity sensors to monitor environmental changes. Step S2: Phase change energy storage control. Based on the collected temperature and humidity data, control the energy storage and release of the phase change energy storage module to buffer temperature fluctuations within the equipment and reduce the risk of condensation. Step S3: Intelligent ventilation adjustment. Based on environmental changes, the fan speed and ventilation valve opening are adjusted to achieve air circulation and help regulate the temperature and humidity inside and outside the equipment. Step S4: Humidity adjustment. When the humidity inside the device is detected to be too high, the humidity adjustment module is activated to reduce the humidity through moisture absorption technology and prevent water vapor condensation. Step S5: Dynamic optimization and adjustment. Based on real-time data and preset algorithms, optimize the temperature and humidity adjustment strategy to achieve precise control of the internal environment of the equipment and ensure safe operation.

[0008] Secondly, the present invention also provides an anti-condensation control system for a power ring main unit, comprising: Phase change energy storage module: This module is used to store and release heat according to temperature changes inside and outside the power equipment, maintain the stability of the temperature inside the equipment, and reduce condensation. The intelligent ventilation module, which includes ventilation ducts, intelligent ventilation valves, and a fan, can automatically adjust airflow based on temperature and humidity data, optimize temperature and humidity distribution, and prevent overheating or excessive humidity inside the equipment. The humidity control module uses activated alumina or similar moisture-absorbing materials to reduce the humidity inside the equipment through moisture absorption technology, ensuring safe operation of the equipment. The intelligent control module collects data through temperature and humidity sensors and uses preset algorithms to automatically adjust the phase change energy storage module, intelligent ventilation module, and humidity regulation module to maintain the optimal state of the equipment environment.

[0009] The energy-saving optimization module analyzes the operating data of each device through the intelligent control module, and dynamically adjusts the working mode of the device in combination with the actual operating conditions of the ring main unit to achieve energy saving.

[0010] The safety protection module works in conjunction with the intelligent control module. When an anomaly protection is triggered, it sends an alarm signal to the operation and maintenance terminal to ensure operational safety.

[0011] The modules work together to achieve comprehensive intelligent control of the power equipment environment, ensuring long-term stable operation of the equipment under complex climatic conditions, reducing failure rate, and achieving energy saving and high efficiency.

[0012] The beneficial effects of this invention are as follows: This invention achieves real-time monitoring of internal environmental parameters of power ring main units through temperature and humidity data acquisition, ensuring that control processes can make decisions based on accurate data and avoiding anti-condensation failures caused by monitoring lag. Compared with existing solutions that rely on single sensors or delayed triggering methods, this method can capture environmental change information in advance, improving the timeliness and effectiveness of anti-condensation measures from the source.

[0013] This invention introduces a phase change energy storage module for temperature control, utilizing the heat storage and release characteristics of phase change materials to buffer temperature fluctuations within the cabinet, thereby reducing the risk of condensation caused by sudden temperature changes. Compared to traditional methods relying on electric heating, this solution not only achieves a smooth temperature transition but also reduces energy consumption while maintaining anti-condensation effects, thus improving operational stability and safety.

[0014] This invention utilizes an intelligent ventilation module to adjust fan speed and ventilation valve opening, enabling dynamic air exchange between the inside and outside of the cabinet, optimizing humidity and heat distribution, and preventing excessive humidity or overheating caused by stagnant air. When humidity exceeds a threshold, the humidity control module can quickly activate, using moisture-absorbing materials to reduce air humidity and prevent water vapor condensation. Through coordinated temperature and humidity control, this invention effectively overcomes the problems of separate and singular temperature and humidity control methods in traditional technologies.

[0015] This invention proposes a dynamic optimization adjustment mechanism that comprehensively corrects temperature control and dehumidification strategies based on real-time data and preset algorithms, achieving precise control of the internal environment of the ring main unit. Compared with existing simple start-stop strategies that rely on fixed thresholds, this method can better adapt to changes in the external environment and load, significantly improving the intelligence and reliability of the control.

[0016] Finally, the anti-condensation system constructed in this invention consists of a phase change energy storage module, an intelligent ventilation module, a humidity regulation module, an intelligent control module, an energy-saving optimization module, and a safety protection module. These modules work collaboratively to form a comprehensive intelligent control capability. This system can maintain the long-term stable operation of the ring main unit under complex climatic conditions, reduce the failure rate, and achieve energy efficiency while ensuring safety, thus solving the shortcomings of existing anti-condensation technologies in terms of accuracy, energy consumption, and system interoperability.

[0017] Therefore, it is evident that the present invention has outstanding substantive features and significant progress compared with the prior art, and the beneficial effects of its implementation are also obvious. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0019] Figure 1 This is a flowchart of an anti-condensation control method for a power ring main unit; Figure 2 This is a schematic diagram of the anti-condensation control system for a power ring main unit. Figure 3 This is a logic control flowchart of an intelligent control module for an anti-condensation control method in a power ring main unit. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following implementation methods.

[0021] Example 1: like Figure 1 As shown in the figure, this embodiment provides a method for preventing condensation in a power ring main unit, which includes the following steps: Step S1, Temperature and humidity data acquisition: Real-time acquisition of internal temperature and humidity data of power equipment through high-precision temperature and humidity sensors to monitor environmental changes; Step S2, Phase Change Energy Storage Control: Based on the collected temperature and humidity data, control the energy storage and release of the phase change energy storage module to buffer temperature fluctuations within the equipment and reduce the risk of condensation. Step S3, Intelligent Ventilation Adjustment: Adjust the fan speed and ventilation valve opening according to environmental changes to achieve air circulation and help regulate the temperature and humidity inside and outside the equipment; Step S4, Humidity Adjustment: When excessive humidity is detected inside the device, the humidity adjustment module is activated to reduce humidity through moisture absorption technology and prevent water vapor condensation. Step S5, Dynamic Optimization and Adjustment: Based on real-time data and preset algorithms, optimize the temperature and humidity adjustment strategy to achieve precise control of the internal environment of the equipment and ensure safe operation.

[0022] Example 2: like Figure 1 As shown in the figure, this embodiment provides a method for preventing condensation in a power ring main unit, which includes the following steps: Step S1, Temperature and humidity data acquisition: Real-time acquisition of internal temperature and humidity data of power equipment through high-precision temperature and humidity sensors to monitor environmental changes; Step S2, Phase Change Energy Storage Control: Based on the collected temperature and humidity data, control the energy storage and release of the phase change energy storage module to buffer temperature fluctuations within the equipment and reduce the risk of condensation. Step S3, Intelligent Ventilation Adjustment: Adjust the fan speed and ventilation valve opening according to environmental changes to achieve air circulation and help regulate the temperature and humidity inside and outside the equipment; Step S4, Humidity Adjustment: When excessive humidity is detected inside the device, the humidity adjustment module is activated to reduce humidity through moisture absorption technology and prevent water vapor condensation. Step S5, Dynamic Optimization and Adjustment: Based on real-time data and preset algorithms, optimize the temperature and humidity adjustment strategy to achieve precise control of the internal environment of the equipment and ensure safe operation.

[0023] In step S1, high-precision temperature and humidity sensors are used to collect real-time temperature and humidity data inside the power equipment to monitor environmental changes. High-precision sensors are selected, with measurement accuracy reaching ±0.3℃ and ±2% RH, enabling rapid and accurate sensing of environmental parameter changes. Data is transmitted to the intelligent control module via wired or wireless means. The intelligent control module, based on a programmable logic controller (PLC), features high reliability and flexible programming. It connects to the temperature and humidity sensors, intelligent ventilation valves, fans, humidity control valves, external heating devices, and external regeneration devices via wired or wireless communication. Its communication module supports multiple protocols such as Modbus and Profibus. For wireless communication, LoRa or NB-IoT technology can be used to ensure real-time and stable data transmission while reducing system wiring costs and facilitating future maintenance and expansion. The intelligent control module also includes a data storage module for long-term storage of collected temperature and humidity data, equipment operating status data, etc., facilitating subsequent data analysis and fault diagnosis.

[0024] The benefit of this step is that it provides real-time environmental data, ensuring that environmental changes can be captured in a timely manner, and providing a precise basis for subsequent temperature and humidity adjustments.

[0025] In step S2, the intelligent control module automatically activates the phase change energy storage module based on the temperature and humidity data collected in step S1. This module mitigates temperature fluctuations within the equipment by adjusting the heat storage and release processes of the phase change material. The phase change energy storage module consists of multiple phase change energy storage material units. The material is a paraffin-based composite phase change material that absorbs heat, changes from a solid to a liquid state, and stores latent heat when the temperature rises. When the temperature decreases, it changes back from a liquid to a solid state, releasing heat, thus achieving dynamic temperature balance. Each phase change energy storage unit is encapsulated in an aluminum alloy shell, with heat dissipation fins on the shell surface to enhance thermal conductivity and heat dissipation. Multiple units are arranged in an array on the bottom and sides of the ring main unit and are tightly connected with thermally conductive silicone to improve overall heat transfer efficiency.

[0026] In addition, the intelligent control module continuously monitors the energy status of the phase change energy storage module. When it detects that the energy is insufficient and cannot maintain stable temperature control, it will automatically control the external heating device to supplement the energy and ensure the continuous and effective operation of the module.

[0027] The beneficial effect of this step is that, through the buffering effect of the phase change energy storage module, it reduces drastic fluctuations in ambient temperature and avoids equipment damage and condensation caused by drastic changes in temperature and humidity.

[0028] In step S3, the intelligent control module controls the intelligent ventilation component to adjust the fan speed and ventilation valve opening based on real-time temperature and humidity data. This ensures smooth airflow inside the equipment, regulates the temperature and humidity inside and outside the equipment, and prevents overheating or moisture accumulation. The intelligent ventilation component includes a ventilation duct, an intelligent ventilation valve, and a fan. The ventilation duct is made of corrosion-resistant, high-strength plastic with a smooth inner wall to reduce airflow resistance. One end connects to the inside of the ring main unit, and the other end leads to the external environment. The intelligent ventilation valve is an electrically adjustable valve, capable of precisely adjusting the opening range from 0-100%. Its drive motor is a low-power, high-torque DC motor, ensuring reliability and low energy consumption during frequent adjustments. The fan is an axial flow fan with large air volume and low air pressure characteristics. The blades are made of aviation-grade aluminum alloy, which is lightweight, high-strength, and corrosion-resistant. The blade angle can be finely adjusted as needed to improve ventilation efficiency and energy saving.

[0029] The beneficial effect of this step is that it can effectively control the airflow inside the equipment, ensure that heat is dissipated in a timely manner, and allow moisture to be discharged, thereby improving the stability and safety of equipment operation.

[0030] In step S4: when the temperature and humidity sensor detects that the internal humidity of the device exceeds a set threshold, the humidity regulation module is activated. This module employs adsorption dehumidification technology, consisting of an activated alumina desiccant filling layer and a solenoid-type humidity control valve. It reduces humidity by adsorbing moisture from the air, responding quickly to humidity changes and reducing moisture accumulation inside the device. The modular design of the desiccant facilitates replacement and maintenance. Its outer shell is made of high-strength plastic, and its internal multi-layered mesh structure ensures uniform distribution of the desiccant without leakage. The humidity control valve has a response speed of less than 100 milliseconds, and its valve core is made of wear-resistant and corrosion-resistant stainless steel, ensuring stability during frequent operation. A humidity detection sensor is installed in the desiccant filling layer to monitor the moisture absorption status in real time. When saturated, it sends a signal to the intelligent control module to control an external regeneration device to regenerate the desiccant and restore its moisture absorption capacity.

[0031] The beneficial effect of this step is that it can reduce humidity in time, prevent water vapor in the air from condensing into water droplets, avoid damage to electrical equipment, and thus extend the service life of the equipment.

[0032] In step S5, the intelligent control module dynamically optimizes the control of the phase change energy storage module, ventilation system, and humidity regulation module based on real-time collected temperature and humidity data and using a preset algorithm. The preset algorithm includes a joint determination of humidity threshold, temperature change rate, and phase change material state. An energy-saving optimization module is included in the method. By analyzing the operating data of each device and combining it with the actual operating conditions of the ring main unit, the operating mode of the equipment is dynamically adjusted to reduce energy consumption. When temperature and humidity changes are stable, the fan speed is automatically reduced. Based on the energy state of the phase change energy storage module, the start-up and shutdown timing and power of the external heating device are rationally arranged to avoid unnecessary consumption. Simultaneously, this module has a learning function, which can continuously optimize the strategy based on long-term operating data to improve energy utilization efficiency.

[0033] The logic control flow of the intelligent control module is as follows: Figure 3 As shown, firstly, the temperature and humidity sensor collects real-time temperature and humidity data inside the ring main unit and transmits the data to the intelligent control module. Then, the system determines whether the collected humidity exceeds a set threshold. If the humidity exceeds the threshold, the dehumidification valve will be opened and the dehumidification device will be activated to dehumidify the air inside the ring main unit; at the same time, the saturation of the desiccant will be monitored in real time. If the saturation is detected to exceed 80%, the system will switch to regeneration mode to regenerate the saturated desiccant by heating; if the saturation is below 80%, normal dehumidification operation will continue.

[0034] If the humidity is below the threshold, the current state will continue without any additional action.

[0035] If the humidity does not exceed the threshold, the system further determines whether the temperature fluctuation rate is greater than 1℃ / min: When the temperature fluctuation rate exceeds 1℃ / min, the intelligent control module adjusts the fan speed and activates the heating device to mitigate the rapid temperature changes inside the cabinet. Simultaneously, it monitors the temperature of the phase change energy storage material. When the detected temperature is 5℃ below the phase change point, it activates the external heating device to replenish the energy of the phase change material; when the temperature is 5℃ above or equal to the phase change point, it stops the heating device to avoid energy waste.

[0036] When the temperature fluctuation rate does not exceed 1℃ / min, the current operating status of the ring main unit shall be maintained.

[0037] Throughout the process, all operational data is recorded and uploaded to the maintenance terminal for remote monitoring, parameter adjustment, and subsequent fault diagnosis.

[0038] In addition, the method is equipped with a safety protection module, including leakage protection, overvoltage protection, and overcurrent protection devices, which are linked with the intelligent control module. When an abnormal protection is triggered, an alarm signal is sent to the operation and maintenance terminal to ensure operational safety. The intelligent control module also supports remote monitoring and diagnostics. Operation and maintenance personnel can view temperature and humidity data and operating status in real time via the network, remotely adjust parameters, and generate fault reports using built-in diagnostic algorithms to improve fault handling efficiency. The method also has the function of linking with the power monitoring system. When there are sudden load changes or voltage fluctuations in the power grid, it can automatically adjust operating parameters to prevent condensation problems caused by environmental changes. The overall structure of the ring main unit uses UL94-V0 grade flame-retardant metal plates and flame-retardant plastics, and fireproof sealant is used to seal key components, further improving fire resistance and safety performance.

[0039] The benefit of this step is that the optimized control strategy can cope with changes in the environment, automatically adjust the system's operating status, and ensure that the equipment can maintain its optimal operating state under any environmental conditions.

[0040] Example 3: like Figure 2 As shown, this embodiment provides an anti-condensation control system for a power ring main unit, comprising: Phase change energy storage module 1 is used to store and release heat based on temperature changes inside and outside the power equipment, maintaining stable internal temperature and reducing condensation. The phase change energy storage module is located inside the ring main unit and consists of multiple phase change energy storage material units. The phase change energy storage material is a paraffin-based composite phase change material, which exhibits excellent phase change characteristics within a specific temperature range. When the temperature inside the ring main unit rises due to heat generated during equipment operation, the phase change energy storage material absorbs heat and changes from a solid to a liquid state, storing the heat as latent heat. When the ring main unit temperature decreases, the material changes back from a liquid to a solid state, releasing the stored energy, thereby effectively maintaining relative temperature stability inside the ring main unit and greatly reducing the risk of condensation caused by large temperature fluctuations. Each phase change energy storage material unit is encapsulated in an aluminum alloy shell. The aluminum alloy shell not only has good thermal conductivity, enabling rapid heat exchange with the air inside the ring main unit, but its surface is also equipped with heat dissipation fins to further enhance heat dissipation. Multiple phase change energy storage material units are spliced ​​together and densely distributed in an array on the bottom and sides of the ring main unit, making full use of the internal space to achieve comprehensive temperature control within the ring main unit. The phase change energy storage material units are tightly connected by thermally conductive silicone to further improve heat transfer efficiency, ensuring that the entire phase change energy storage module works collaboratively and performs at its best during temperature control.

[0041] By utilizing the heat absorption and release properties of phase change materials, the internal temperature of the ring main unit is kept stable, reducing the risk of condensation caused by sudden temperature changes, extending equipment life and improving operational reliability.

[0042] The intelligent ventilation module 2 includes a ventilation duct 201, an intelligent ventilation valve 202, and a fan 203. It automatically adjusts airflow based on temperature and humidity data, optimizing temperature and humidity distribution to prevent overheating or excessive humidity inside the equipment. The ventilation duct 201 is made of corrosion-resistant, high-strength plastic with a smooth inner wall to reduce airflow resistance. One end of the ventilation duct 201 connects to the inside of the ring main unit, while the other end leads to the external environment, providing a channel for air circulation between the inside and outside of the ring main unit. The intelligent ventilation valve 202 is installed on the ventilation duct 201 and is an electrically adjustable valve. It can precisely adjust the valve opening by receiving signals from the intelligent control module 4, with an adjustment range of 0-100%, accurately controlling the ventilation volume based on the actual temperature and humidity conditions inside the ring main unit. The fan 203 is located at the end of the ventilation duct 201 closest to the inside of the ring main unit. The fan 203 is an axial flow fan, characterized by large air volume and low air pressure, which efficiently propels airflow within the ventilation duct 201, ensuring effective air exchange between the inside and outside of the ring main unit. The intelligent ventilation valve 202 uses a low-power, high-torque DC motor to drive it, ensuring stable and reliable operation during frequent adjustments while reducing energy consumption. The axial flow fan blades are optimized and made of aerospace-grade aluminum alloy, featuring lightweight, high strength, and corrosion resistance. The blade angle can be finely adjusted according to actual ventilation needs to further improve ventilation efficiency and energy saving.

[0043] It can intelligently regulate airflow, promptly expel hot and humid air, prevent overheating or excessive humidity inside the equipment, and improve the flexibility and energy efficiency of overall environmental control.

[0044] Humidity control module 3 reduces humidity inside the equipment using adsorption dehumidification technology, ensuring safe operation. The module consists of a desiccant filling layer 301 and a humidity control valve 302. The desiccant filling layer 301 is located inside the ventilation duct 201. The desiccant used is activated alumina, which has a large specific surface area and excellent adsorption performance, efficiently adsorbing moisture from the air. The desiccant filling layer 301 adopts a modular design, composed of multiple desiccant modules of the same specifications, facilitating overall replacement or individual maintenance of a single module after the desiccant becomes saturated. The humidity control valve 302 is installed on the ventilation ducts 201 at both ends of the desiccant filling layer. It uses a solenoid valve with a fast response time, quickly opening or closing according to the instructions of the intelligent control module. When the humidity inside the ring main unit is high, the intelligent control module controls the humidity control valve 302 to open, allowing air to flow through the desiccant filling layer under the action of a fan. The moisture in the air is adsorbed by the desiccant, thus achieving dehumidification. The desiccant filling layer 301 is equipped with a humidity detection sensor to monitor the moisture absorption status of the desiccant in real time. When the desiccant reaches saturation, the humidity detection sensor immediately sends a signal to the intelligent control module. The intelligent control module then controls the external regeneration device to regenerate the desiccant, restoring its moisture absorption capacity and ensuring the continuous and stable operation of the humidity regulation module. The outer shell of the desiccant module is made of high-strength plastic with a multi-layer mesh structure inside, ensuring uniform distribution of the desiccant and preventing leakage. The valve core of the solenoid valve is made of stainless steel with a special surface treatment, exhibiting excellent wear resistance and corrosion resistance, and a response time of less than 100 milliseconds, meeting the system's rapid response requirements for humidity regulation.

[0045] Through an efficient adsorption and regeneration mechanism, the humidity inside the ring main unit can be dynamically maintained within a reasonable range, avoiding condensation and reduced equipment insulation performance caused by excessive humidity.

[0046] The intelligent control module 4, based on a programmable logic controller (PLC), boasts significant advantages in high reliability and flexible programming. It collects real-time temperature and humidity data within the ring main unit using high-precision temperature and humidity sensors, capable of quickly and accurately sensing changes in environmental parameters. Based on the collected data, the intelligent control module employs a preset algorithm to accurately determine the temperature and humidity status within the ring main unit. When the temperature or humidity exceeds a pre-set reasonable range, the intelligent control module immediately sends a control signal to adjust the opening of the intelligent ventilation valve 202 and the speed of the fan 203, thereby flexibly adjusting the ventilation volume and effectively controlling the temperature and humidity within the ring main unit. Simultaneously, the intelligent control module continuously monitors the energy status of the phase change energy storage module. When insufficient energy is detected, it automatically controls the external heating device to start, replenishing the energy and ensuring the phase change energy storage module is in good working condition. The intelligent control module connects to other modules via wired or wireless communication, supporting protocols such as Modbus and Profibus, and can also achieve wireless communication through low-power, high-stability LoRa or NB-IoT technologies. Its data storage module can store the collected operational data for extended periods, facilitating subsequent data analysis and fault diagnosis. The intelligent control module also features remote monitoring and diagnostic capabilities, enabling maintenance personnel to remotely view real-time data, adjust parameters, receive fault reports, and receive maintenance guidance via the internet or a dedicated network.

[0047] This enables intelligent, automated, and remote control of the ring main unit's environment and equipment operation, improving operational safety and maintenance efficiency.

[0048] Energy-saving optimization module 5 analyzes the operating data of each device through the intelligent control module and dynamically adjusts the operating mode of the equipment based on the actual operating conditions of the ring main unit to achieve energy saving. When the temperature and humidity changes within the ring main unit are relatively stable and close to the set ideal values, the intelligent control module reduces the fan speed to decrease ventilation energy consumption. Based on the energy storage and release status of the phase change energy storage module, it rationally arranges the operation of external heating devices to avoid unnecessary energy consumption. Energy-saving optimization module 5 also has a learning function, which can automatically optimize the control strategy of the equipment based on long-term accumulated operating data, further improving the system's energy utilization efficiency and reducing operating costs.

[0049] While ensuring temperature and humidity control, energy-saving operation is achieved, reducing the overall energy consumption and operation and maintenance costs of the ring main unit.

[0050] The safety protection module 6 consists of a leakage current protection unit 601, an overvoltage protection unit 602, and an overcurrent protection unit 603, and is connected to the intelligent control module 4. The leakage current protection unit 601 monitors the leakage current in the circuit in real time and quickly cuts off the power supply when it exceeds the threshold. The overvoltage protection unit 602 monitors the input voltage and immediately activates protection if the voltage is too high. The overcurrent protection unit 603 quickly trips and cuts off the circuit when the current exceeds the limit. In case of abnormalities, the safety protection module 6 transmits alarm signals to the maintenance personnel's terminal via a wireless communication module, reminding them to handle the situation promptly. Simultaneously, the entire system uses fire-resistant and flame-retardant materials; for example, the ring main unit cabinet shell uses flame-retardant metal sheets with a fire rating of UL94-V0, non-metallic parts use flame-retardant plastics, and connections are sealed with fire-retardant sealant.

[0051] It provides multi-layered electrical and structural safety protection to prevent electrical faults, fires, and electric shock accidents, and to ensure the safe operation of the system and power grid.

[0052] Example 4: To illustrate the technical method of the present invention in more detail, this embodiment uses... Figure 2 A typical outdoor ring main unit embodiment of an anti-condensation control system for a power ring main unit is provided, comprising: Phase change energy storage module 1 is used to store and release heat based on temperature changes inside and outside the power equipment, maintaining stable internal temperature and reducing condensation. The phase change energy storage module is located inside the ring main unit and consists of multiple phase change energy storage material units. The phase change energy storage material is a paraffin-based composite phase change material, which exhibits excellent phase change characteristics within a specific temperature range. When the temperature inside the ring main unit rises due to heat generated during equipment operation, the phase change energy storage material absorbs heat and changes from a solid to a liquid state, storing the heat as latent heat. When the ring main unit temperature decreases, the material changes back from a liquid to a solid state, releasing the stored energy, thereby effectively maintaining relative temperature stability inside the ring main unit and greatly reducing the risk of condensation caused by large temperature fluctuations.

[0053] Each phase change energy storage unit is encapsulated within an aluminum alloy casing, which is tightly bonded to the cabinet using thermally conductive silicone. This casing offers excellent thermal conductivity and features heat dissipation fins oriented towards the airflow within the cabinet to enhance heat exchange. Multiple phase change energy storage units are fixedly installed at 20cm x 20cm intervals on the bottom and sides of the ring main unit, forming an array to fully utilize the internal space and achieve comprehensive temperature control. The units are tightly connected via thermally conductive silicone, further improving heat transfer efficiency and ensuring the phase change energy storage modules work collaboratively and achieve optimal performance during temperature regulation.

[0054] The intelligent ventilation module 2 includes a ventilation duct 201, an intelligent ventilation valve 202, and a fan 203. It automatically adjusts airflow based on temperature and humidity data, optimizing temperature and humidity distribution to prevent overheating or excessive humidity inside the equipment. The ventilation duct 201 is made of DN100 corrosion-resistant PVC pipe to reduce airflow resistance. One end of the ventilation duct 201 connects to the inside of the ring main unit, and the other end opens to the external environment, forming a stable air convection channel. The intelligent ventilation valve 202 is a ZAP-100 electric regulating valve installed on the ventilation duct 201. It can adjust its opening from 0-100% by receiving commands from the intelligent control module 4, precisely controlling the ventilation volume. The fan 203 is an FS-100 axial flow fan with an airflow of 1500 m³ / h, installed in series with the intelligent ventilation valve 202 inside the duct. It efficiently propels airflow within the ventilation duct 201, ensuring effective air exchange between the inside and outside of the ring main unit and preventing heat and moisture accumulation. The blades of the axial flow fan are made of aerospace aluminum alloy, which is lightweight, high-strength, and corrosion-resistant. The angle can be adjusted according to actual needs to improve ventilation efficiency and energy saving.

[0055] Humidity control module 3 reduces internal humidity through adsorption dehumidification technology, ensuring safe operation of the equipment. Its core component is a desiccant module located in the middle of ventilation duct 201. This module uses a three-layer activated alumina desiccant unit, measuring 10cm × 10cm × 5cm per module, which efficiently adsorbs moisture from the air. SV-20 solenoid valves with an 80ms response time are located at both ends of the module, rapidly opening and closing according to instructions from the intelligent control module to ensure airflow through the desiccant module when humidity exceeds limits.

[0056] After the desiccant becomes saturated with moisture, it is regenerated by a 500W electric heating regeneration device. The device heats the desiccant to 120℃ and maintains this temperature for 2 hours to restore its moisture absorption capacity, ensuring the continuous and stable operation of the system. The desiccant module's outer shell is made of high-strength plastic, with an internal multi-layered mesh structure to ensure uniform filling and prevent leakage.

[0057] The intelligent control module 4 uses a Siemens S7-200 SMARTPLC PLC chip as its core to collect real-time temperature and humidity data inside the ring main unit. The sensor is a SHT30 model with an accuracy of ±0.3℃ and ±2%RH (relative humidity), enabling rapid and accurate detection of environmental parameter changes. Based on the collected data and a preset algorithm, the intelligent control module 4 judges the temperature and humidity status inside the unit. When the humidity exceeds 60%RH and the temperature drop rate exceeds 1℃ / min, it immediately sends a control signal to simultaneously start the fan (80% speed), open the humidity regulating solenoid valve, and check the temperature of the phase change energy storage module. When the temperature drops below the phase change point by 5℃, it automatically activates the external heating device to replenish energy, ensuring the phase change energy storage module is in good working condition.

[0058] The intelligent control module also has remote monitoring and data storage functions. It can interact with the operation and maintenance terminal in real time through wired communication protocols such as Modbus and Profibus or wireless protocols such as LoRa and NB-IoT, and supports remote parameter adjustment and fault diagnosis.

[0059] Furthermore, when the intelligent control module detects that the external ambient humidity remains above 90%RH, it determines that the system is in an extreme humidity environment and activates a deep dehumidification mode: the fan speed is increased to 100%, and the ventilation volume is increased to 2000 m³ / h; the desiccant module switches from series to parallel operation, and two sets of regeneration devices are activated to work alternately, increasing the dehumidification efficiency by 50%; simultaneously, the phase change energy storage module maintains its temperature at the phase change point within ±2℃, preventing a sudden drop in the cabinet temperature through continuous heat release. This mode ensures that the system can effectively prevent condensation even in extremely high humidity environments.

[0060] Energy-saving optimization module 5 dynamically adjusts the operating mode of the ring main unit based on its actual operating conditions to achieve energy savings. Module 5 also has a learning function, automatically optimizing the equipment's control strategy based on long-term accumulated operating data to further improve the system's energy efficiency and reduce operating costs.

[0061] The safety protection module 6 consists of a leakage current protection unit 601, an overvoltage protection unit 602, and an overcurrent protection unit 603, and is connected to the intelligent control module 4. It provides multi-level electrical and structural safety protection to prevent electrical faults, fires, and electric shock accidents, ensuring the safe operation of the system and power grid.

[0062] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. The methods disclosed in the embodiments are described simply because they correspond to the systems disclosed in the embodiments; relevant details can be found in the method section.

[0063] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0064] In the embodiments provided by this invention, it should be understood that the disclosed systems, methods, and approaches can be implemented in other ways. For example, the system embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between systems or units may be electrical, mechanical, or other forms.

[0065] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0066] In addition, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one unit.

[0067] Similarly, in the various embodiments of the present invention, each processing unit can be integrated into a functional module, or each processing unit can exist physically, or two or more processing units can be integrated into a functional module.

[0068] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0069] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0070] The above-disclosed embodiments are merely preferred embodiments of the present invention, but the present invention is not limited thereto. Any non-creative variations that can be conceived by those skilled in the art, as well as any improvements and modifications made without departing from the principles of the present invention, should fall within the protection scope of the present invention.

Claims

1. A method for preventing condensation control in a power ring main unit, characterized in that, Includes the following steps: Step S1: Temperature and humidity data acquisition. Real-time temperature and humidity data inside the power equipment are acquired using high-precision temperature and humidity sensors to monitor environmental changes. Step S2: Phase change energy storage control, based on the collected temperature and humidity data, control the energy storage and release of the phase change energy storage module; Step S3: Intelligent ventilation adjustment, adjusting fan speed and ventilation valve opening according to environmental changes; Step S4: Humidity adjustment. When excessive humidity is detected inside the device, the humidity adjustment module is activated. Step S5: Dynamic optimization and adjustment. Based on real-time data and preset algorithms, optimize the temperature and humidity control strategy.

2. The method for preventing condensation in a power ring main unit according to claim 1, characterized in that, In step S1: high-precision temperature and humidity sensors are used to collect real-time temperature and humidity data inside the power equipment to monitor environmental changes; the data is transmitted to the intelligent control module via wired or wireless means.

3. A method for preventing condensation in a power ring main unit according to claim 1 or 2, characterized in that, In step S2, the intelligent control module automatically starts the phase change energy storage module based on the collected temperature and humidity data, and alleviates the temperature fluctuations inside the equipment by adjusting the heat storage and heat release process of the phase change material.

4. The method for preventing condensation in a power ring main unit according to claim 3, characterized in that, The phase change energy storage module is composed of multiple phase change energy storage material units. The material is a paraffin-based composite phase change material. When the temperature rises, it absorbs heat and changes from solid to liquid, storing latent heat. When the temperature drops, it changes from liquid to solid again, releasing heat. Each phase change energy storage unit is encapsulated in an aluminum alloy shell. The surface of the shell is provided with heat dissipation fins to enhance the heat conduction and heat dissipation effect. Multiple units are distributed in an array at the bottom and sides of the ring main unit and are tightly connected by thermally conductive silicone.

5. The method for preventing condensation in a power ring main unit according to claim 3, characterized in that, In step S3: the intelligent control module controls the intelligent ventilation component to adjust the fan speed and ventilation valve opening based on real-time temperature and humidity data, thereby regulating the temperature and humidity inside and outside the equipment. The intelligent ventilation component includes a ventilation duct, an intelligent ventilation valve 202, and a fan. The ventilation duct is made of corrosion-resistant, high-strength plastic material, with one end connected to the inside of the ring main unit and the other end leading to the external environment. The intelligent ventilation valve 202 is an electric regulating valve that can precisely adjust the opening range from 0-100%. Its drive motor is a low-power, high-torque DC motor. The fan is an axial flow fan with blades made of aviation aluminum alloy, and the blade angle can be finely adjusted according to requirements.

6. The method for preventing condensation in a power ring main unit according to claim 5, characterized in that, In step S4: When the humidity sensor detects that the internal humidity of the device exceeds the set threshold, the humidity regulation module is activated. The humidity regulation module adopts adsorption dehumidification technology and consists of an activated alumina desiccant filling layer and a solenoid valve-type humidity regulation control valve. The desiccant has a modular design for easy replacement and maintenance. Its outer shell is made of high-strength plastic material, and the interior has a multi-layer mesh structure to ensure that the desiccant is evenly distributed and does not leak. The humidity regulation control valve has a response speed of less than 100 milliseconds, and the valve core is made of wear-resistant and corrosion-resistant stainless steel. A humidity detection sensor is installed in the desiccant filling layer to monitor the moisture absorption status in real time. When saturated, it will send a signal to the intelligent control module to control the external regeneration device to regenerate it and restore its moisture absorption capacity.

7. The method for preventing condensation control in a power ring main unit according to claim 6, characterized in that, In step S5: the intelligent control module dynamically optimizes the phase change energy storage module, ventilation system, and humidity regulation module based on real-time collected temperature and humidity data using a preset algorithm; the preset algorithm includes a joint determination of humidity threshold, temperature change rate, and phase change material state; an energy-saving optimization module is set up to dynamically adjust the working mode of the equipment by analyzing the operating data of each device and combining the actual working conditions of the ring main unit; and the timing and power of the external heating device are reasonably arranged according to the energy state of the phase change energy storage module.

8. The method for preventing condensation in a power ring main unit according to claim 7, characterized in that, The intelligent control module's logic control process is as follows: First, the temperature and humidity sensor collects real-time temperature and humidity data inside the ring main unit and transmits the data to the intelligent control module. Then, the system determines whether the collected humidity exceeds a set threshold. If the humidity is higher than the threshold, the dehumidification valve is opened and the dehumidification device is activated to dehumidify the air inside the ring main unit. Simultaneously, the saturation of the desiccant is monitored in real-time. If the saturation exceeds 80%, the system switches to regeneration mode to heat and regenerate the saturated desiccant. If the saturation is lower than 80%, normal dehumidification operation continues. If the humidity is lower than the threshold, the current state is maintained without any additional action. If the humidity does not exceed the threshold, the system further determines whether the temperature fluctuation rate is greater than 1℃ / min: when the temperature fluctuation rate exceeds 1℃ / min, the intelligent control module adjusts the fan speed and starts the heating device to alleviate the rapid temperature change inside the cabinet. At the same time, it monitors the temperature of the phase change energy storage material. When the detected temperature is 5℃ below the phase change point, the external heating device is started to replenish the energy of the phase change material; when the temperature is 5℃ above or equal to the phase change point, the heating device is stopped to avoid energy waste; when the temperature fluctuation rate does not exceed 1℃ / min, the current operating status of the ring main unit is maintained. Throughout the entire process, all operating data is recorded and uploaded to the operation and maintenance terminal for remote monitoring, parameter adjustment, and subsequent fault diagnosis.

9. A condensation prevention control system for a power ring main unit, characterized in that, include: Phase change energy storage module (1), intelligent ventilation module (2), humidity regulation module (3), intelligent control module (4), energy saving optimization module (5), and safety protection module (6); The phase change energy storage module (1) is used to store and release heat according to the temperature changes inside and outside the power equipment, maintain the temperature stability inside the equipment, and reduce condensation. The intelligent ventilation module (2) can automatically adjust the air circulation according to the temperature and humidity data, optimize the temperature and humidity distribution, and avoid overheating or overhumidification inside the equipment. The humidity control module (3) uses activated alumina or similar moisture-absorbing materials to reduce the humidity inside the equipment through moisture absorption technology, thereby ensuring the safe operation of the equipment. The intelligent control module (4) collects data through temperature and humidity sensors and uses a preset algorithm to automatically adjust the phase change energy storage module (1), intelligent ventilation module (2) and humidity adjustment module (3). The energy-saving optimization module (5) analyzes the operating data of each device through the intelligent control module (4) and dynamically adjusts the working mode of the device in combination with the actual operating conditions of the ring network cabinet. The security protection module (6) is linked with the intelligent control module (4). When an abnormal protection is triggered, an alarm signal is sent to the operation and maintenance terminal to ensure operational safety.

10. The anti-condensation control system for a power ring main unit according to claim 9, characterized in that, The phase change energy storage module (1) is installed inside the ring main unit and is composed of multiple phase change energy storage material units. The phase change energy storage material is a paraffin-based composite phase change material. This material has good phase change characteristics within a specific temperature range. When the temperature inside the ring main unit rises due to heat generated by the operation of the equipment, the phase change energy storage material absorbs heat and changes from solid to liquid, storing the heat in the form of latent heat. When the temperature of the ring main unit decreases, the material changes from liquid back to solid, releasing the stored energy, thereby effectively maintaining the relative stability of the temperature inside the ring main unit and greatly reducing the risk of condensation caused by large temperature fluctuations. The intelligent ventilation module (2) includes a ventilation duct (201), an intelligent ventilation valve (202), and a fan (203). The ventilation duct (201) is made of corrosion-resistant high-strength plastic material, with one end connected to the inside of the ring network cabinet and the other end leading to the external environment. The intelligent ventilation valve (202) is installed on the ventilation duct (201), and the drive motor is a low-power, high-torque DC motor. An electric regulating valve is used to precisely adjust the valve opening, with an opening adjustment range of 0-100%. The fan (203) is located at one end of the ventilation duct (201) near the inside of the ring network cabinet. An axial flow fan is selected, and the blades of the axial flow fan are made of aviation aluminum alloy material. The blade angle can be finely adjusted according to the actual ventilation requirements. The humidity control module (3) reduces the humidity inside the equipment through adsorption dehumidification technology. It consists of a desiccant filling layer (301) and a humidity control valve (302). The desiccant filling layer is set inside the ventilation duct (201). The desiccant is active alumina. The desiccant filling layer adopts a modular design and is spliced ​​together from multiple desiccant modules of the same specifications. The humidity control valve is installed on the ventilation ducts at both ends of the desiccant filling layer. It is an electromagnetic valve. The valve core of the electromagnetic valve is made of stainless steel. The outer shell of the desiccant module is made of high-strength plastic material and has a multi-layer mesh structure inside. The intelligent control module (4) is based on a programmable logic controller. It collects temperature and humidity data in the ring network cabinet in real time through temperature and humidity sensors. The intelligent control module also continuously monitors the energy status of the phase change energy storage module. The intelligent control module connects to other modules through wired or wireless communication. The intelligent control module can also perform remote monitoring and diagnosis. It can allow maintenance personnel to remotely view real-time data, adjust parameters, receive fault reports and guide maintenance through the Internet or dedicated network. The safety protection module (6) consists of a leakage current protection unit (601), an overvoltage protection unit (602), and an overcurrent protection unit (603). The leakage current protection unit (601) monitors the leakage current in the circuit in real time and quickly cuts off the power supply when it exceeds the threshold. The overvoltage protection unit (602) monitors the input voltage and immediately activates the protection if the voltage is too high. The overcurrent protection unit (603) quickly acts and cuts off the circuit when the current exceeds the limit.

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