A smart electricity metering box

Abstract

This invention relates to the field of power equipment technology, and more particularly to an intelligent electricity metering box, comprising: a box body; a dehumidification module for dehumidifying the air inside the box, including a heating component, color-changing glass that absorbs solar heat through color change to dry the space inside the box, and a ventilation component; a detection module; a power supply module, including a solar power generation component; and a control module for determining a first dehumidification method based on the Pearson correlation coefficient between humidity and current fluctuations inside the electricity metering box, including ventilating the internal space of the electricity metering box, or determining a second dehumidification method based on the instantaneous power generation voltage of the power supply module, and adjusting the extension length and leakage inspection position of the solar power generation component according to the humidity change. This invention improves the accuracy of dehumidification and the operational stability of the electricity metering box.

Description

Technical Field

[0001] This invention relates to the field of power equipment technology, and in particular to an intelligent power metering box. Background Technology

[0002] As the core equipment for electricity metering and trade settlement in the power system, the operational stability of the electricity metering box directly affects the power supply quality and user rights. However, in practical applications, electricity metering boxes are often installed outdoors or in humid environments (such as basements or cable trenches), and are exposed to high humidity conditions for a long time, leading to problems such as equipment corrosion, abnormal inductance parameters, and current fluctuations. This, in turn, causes a decline in the operational stability of the distribution box, which has become a technical pain point that urgently needs to be solved in the industry.

[0003] Corrosion of equipment can cause abnormal inductance parameters, directly leading to current fluctuations. Taking current transformers as an example, core corrosion reduces permeability and inductance, resulting in unstable secondary current output with fluctuations reaching ±8%. These fluctuations are transmitted to the distribution box via the secondary circuit, causing circuit breaker malfunctions and protection device failures. Statistics show that 25% of distribution box failures are caused by moisture and corrosion in the electricity metering box, with 70% of these related to protection device malfunctions caused by current fluctuations.

[0004] Currently, the industry mainly mitigates moisture problems through passive protection measures such as improved sealing and drainage optimization, but these measures have limitations such as high maintenance costs and limited effectiveness. Therefore, developing power metering boxes with active moisture protection and intelligent monitoring functions has become a key direction for improving the operational stability of power systems. Summary of the Invention

[0005] Therefore, the present invention provides an intelligent power metering box to overcome the problem in the prior art where moisture causes increased inductance of corroded equipment, which in turn causes fluctuations in current and reduces the working stability of the power metering box.

[0006] To achieve the above objectives, the present invention provides an intelligent electricity metering box, comprising:

[0007] The enclosure includes wiring terminals, and the interior of the enclosure contains circuit components for an electricity metering box;

[0008] A dehumidification module, connected to the housing, is used to dehumidify the air inside the housing. It includes a heating component installed on the inner wall of the housing to heat and dehumidify the space inside the housing, a color-changing glass installed on the side wall of the housing away from the circuit components of the electricity metering box to absorb solar heat through color change and dry the space inside the electricity metering box, and a ventilation component installed above the color-changing glass to introduce airflow from outside the housing into the housing.

[0009] A detection module, which is installed on the inner wall of the box, is used to detect the load current of the power metering box and the air temperature inside the box.

[0010] A power supply module, which is connected to the dehumidification module and the detection module respectively, is used to provide electrical energy, including a solar power generation module disposed above the ventilation component to convert solar energy into electrical energy;

[0011] A control module, connected to the dehumidification module, the detection module, and the power supply module, is used to determine a first dehumidification method based on the Pearson correlation coefficient between the humidity inside the energy metering box and the current fluctuation of the load current, including ventilation of the internal space of the energy metering box.

[0012] Alternatively, the second dehumidification method can be determined based on the instantaneous power generation voltage generated by the power supply module when exposed to sunlight, and the extension length of the solar power generation module and the location of the leak to be inspected can be determined based on the humidity change of the air humidity inside the box after the second dehumidification method is executed.

[0013] The second dehumidification method includes adjusting the heating temperature of the heating component or adjusting the color of the photochromic glass.

[0014] Furthermore, the detection module includes:

[0015] A humidity sensor is installed on the side wall of the box near the circuit components of the power metering box to detect the relative humidity of the air inside the box.

[0016] An ammeter, which is connected to the circuit elements of the energy metering box, is used to detect the load current of the energy metering box;

[0017] Several temperature sensors are disposed on the inner wall of the enclosure to detect the temperature of the inner wall of the enclosure near the several of the terminal blocks.

[0018] Furthermore, the solar power generation component includes a first solar panel, a second solar panel connected to the first solar panel, and telescopic rods connected to the first solar panel and the second solar panel respectively to adjust the distance between the connection position of the two solar panels and the upper surface of the housing.

[0019] Furthermore, the control module is connected to the ammeter and the humidity sensor respectively to obtain the air humidity inside the box and the current fluctuation of the load current in a single detection cycle, and calculate the Pearson correlation coefficient of the humidity and the current fluctuation. If the Pearson correlation coefficient is less than the preset coefficient, it is determined that the operating stability of the power metering box is less affected by humidity, and the ventilation component is controlled to operate.

[0020] If the Pearson correlation coefficient is greater than or equal to the preset coefficient, it is determined that the current fluctuation of the power metering box is greatly affected by humidity, and the instantaneous power generation voltage generated by the solar power generation module when exposed to sunlight is obtained.

[0021] Furthermore, the control module is connected to the solar power generation component and the heating component respectively, and is used to determine that the solar energy conversion efficiency does not meet the requirements when the operating stability of the power metering box is greatly affected by humidity and the instantaneous power generation voltage is less than the preset voltage, and to increase the heating temperature of the heating component.

[0022] Furthermore, the heating temperature is negatively correlated with the instantaneous power generation voltage.

[0023] Furthermore, the control module is connected to the photochromic glass and is used to determine that the power supply module has reached the energy storage condition when the operating stability of the energy metering box is greatly affected by humidity and the instantaneous power generation voltage is greater than or equal to the preset voltage, and to supply power to the photochromic glass to make it change to a light-absorbing color.

[0024] Furthermore, the control module is connected to the humidity sensor to obtain the humidity change within a unit monitoring time after the second dehumidification method is executed. If the humidity change is less than the preset change, it is determined that the dehumidification effect does not meet the requirements, and ventilation is introduced into the power metering box and the temperature change after ventilation is obtained.

[0025] Furthermore, the control module is connected to the solar power generation component and several temperature sensors respectively, so as to determine that there is air leakage in the wiring terminals of the power metering box when the temperature change is greater than the preset temperature change, and reduce the extension length of the telescopic rod.

[0026] Furthermore, the control module is connected to several temperature sensors to determine the corresponding location of the temperature sensor whose temperature change is greater than the preset temperature change as a leak location to be inspected, and transmits the location information of the leak location to the backend.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy metering box of the present invention, by setting up a dehumidification module, a detection module, a power supply module, and a control module, effectively solves the problems of equipment corrosion, increased inductance, current fluctuations, and decreased operational stability of the energy metering box caused by humidity by monitoring the humidity and current fluctuations inside the energy metering box; by setting up a dehumidification module, the inside of the energy metering box is dehumidified; the photochromic glass absorbs heat by changing color, which can dry the circuit components inside the energy metering box; and when the photochromic glass does not change color, it is convenient to observe whether there are any abnormalities in the internal structure of the energy metering box, and ventilation is also improved. The components can ventilate the box to further reduce humidity, and the heating components can heat the box to dehumidify it when necessary, ensuring that the inside of the electricity metering box is dry. The power supply module converts solar energy into electrical energy through the solar power generation components to provide power to the dehumidification module and the detection module, thereby reducing energy consumption and improving the energy utilization efficiency of the electricity metering box. The control module determines whether humidity affects the circuit components based on the correlation between humidity and current fluctuations in the electricity metering box, and then determines the corresponding handling method, thereby improving the accuracy of dehumidification of the environment inside the electricity metering box and improving the working stability of the electricity metering box.

[0028] Furthermore, the energy metering box of the present invention uses a humidity sensor, an ammeter, a temperature sensor, and a voltage sensor to detect the operating parameters of the energy metering box. By detecting changes in humidity inside the box, the humidity data provided to the control module determines the dehumidification method. The ammeter monitors the current fluctuations of the circuit components in the energy metering box, working in conjunction with the humidity sensor to determine the operating status of the energy metering box. Several temperature sensors monitor the temperature fluctuations of the inner wall of the box in real time, providing temperature data to the control module, which helps to promptly identify any leaks in the energy metering box and ensure its stable operation. The voltage sensor detects the instantaneous generation voltage of the solar power generation module to determine whether the solar energy is sufficient, ensuring that the heating temperature of the heating module can be adjusted in time when the solar energy conversion efficiency does not meet the requirements, or that the color of the color-changing glass can be intelligently adjusted when the solar energy conversion efficiency meets the requirements, so as to achieve efficient energy utilization and dehumidification effect.

[0029] Furthermore, the electricity metering box of this invention is equipped with two solar panels and a telescopic rod. The solar panels convert solar energy into electrical energy to supply the devices inside the electricity metering box. The angle between the two solar panels can be changed by adjusting the telescopic rod, thereby adjusting the orientation of the solar panels and optimizing the absorption efficiency of solar energy. When there is sufficient sunshine, the solar panels can maximize the capture of solar energy and improve the power generation efficiency; while when there is insufficient sunshine or the angle of the sun changes, the telescopic rod can be adjusted to keep the solar panels at the optimal angle, ensuring a stable power supply, thereby improving the utilization rate of solar energy and enhancing the energy self-sufficiency of the electricity metering box.

[0030] Furthermore, the energy metering box of the present invention uses a preset coefficient to determine the correlation between humidity and current fluctuations. If the correlation is small, the working state of the circuit components of the energy metering box is relatively stable, and the influence of humidity on current fluctuations is small. The control module will mainly rely on the ventilation components for dehumidification, and by increasing the air circulation in the energy metering box, the humidity will be quickly reduced to avoid adverse effects on the circuit components due to excessive humidity. If the correlation is large, it indicates that the current fluctuations of the circuit components may be due to the high degree of corrosion of the energy metering box equipment caused by high humidity, or due to changes in the properties of the insulation layer of the circuit caused by high humidity. In this case, the method of dehumidification by the ventilation components is not suitable for reducing the impact of corrosion. Therefore, by analyzing the instantaneous generated voltage, the environment in which the energy metering box is located, i.e., the sunshine conditions, is determined, thereby improving the dehumidification accuracy of the energy metering box.

[0031] Furthermore, the energy metering box of the present invention determines the solar energy conversion efficiency by setting a preset voltage. When the solar energy conversion efficiency does not meet the requirements, the light energy decreases. By increasing the heating temperature of the heating component, the temperature inside the energy metering box is increased, thereby accelerating the evaporation of moisture and achieving the purpose of dehumidification. The heating dehumidification method dehumidifies the energy metering box as quickly as possible under conditions of weak light energy and fluctuating current. If the humidity inside the energy metering box is too high, it will not only affect the performance of the circuit components. By increasing the heating temperature of the heating component, the temperature inside the energy metering box can be rapidly increased, accelerating the evaporation of moisture and increasing the effectiveness of dehumidification.

[0032] Furthermore, the energy metering box of the present invention changes the color of the photochromic glass by passing electricity through it, thereby absorbing more light energy and converting it into heat energy to heat and dehumidify the inside of the energy metering box. The amount of electricity passed through the photochromic glass is small so as to store more solar energy. After absorbing heat, the photochromic glass can dry the circuit components inside the energy metering box, further ensuring the dryness of the inside of the energy metering box and reducing energy consumption.

[0033] Furthermore, the energy metering box of the present invention determines whether incomplete drying is caused by air leakage by ventilating the energy metering box. When air leakage is found in the energy metering box, ventilation causes the temperature at the leakage location to drop. Then, the leakage point is quickly located by the data change of the temperature sensor, and the leakage location is transmitted to the backend. This improves the long-term operational stability of the energy metering box. In addition, by increasing the angle of the solar panel of the leaking energy metering box, the entry of dust is reduced. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of the intelligent energy metering box according to an embodiment of the present invention;

[0035] Figure 2 This is a cross-sectional view of the casing wall of the intelligent energy metering box according to an embodiment of the present invention;

[0036] Figure 3 This is a structural block diagram of the intelligent power metering box according to an embodiment of the present invention;

[0037] Figure 4 This is a block diagram of the detection module of the intelligent power metering box according to an embodiment of the present invention;

[0038] Explanation of reference numerals: 1-box body, 2-first support shaft, 3-first solar panel, 4-telescopic rod, 5-fan, 6-color-changing glass, 7-terminal block, 8-temperature sensor, 9-heating film, 10-second solar panel, 11-second support shaft. Detailed Implementation

[0039] To make the objectives and advantages of the present invention clearer, the present invention will be further described below with reference to embodiments; it should be understood that the specific embodiments described herein are merely for explaining the present invention and are not intended to limit the present invention.

[0040] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0041] It should be noted that in the description of this invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc., which indicate directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and is not intended to indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this invention.

[0042] Furthermore, it should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0043] Please see Figure 1-4 The figures shown are a schematic diagram, a cross-sectional view of the box wall, a structural block diagram, and a structural block diagram of the detection module of an embodiment of the present invention. An embodiment of the present invention provides an intelligent energy metering box, comprising:

[0044] Box 1 includes wiring terminals 7, wherein the interior of the box is equipped with circuit components for an energy metering box;

[0045] A dehumidification module, which is connected to the housing 1, is used to dehumidify the air inside the housing. It includes a heating component installed on the inner wall of the housing to heat and dehumidify the space inside the housing, a color-changing glass 6 installed on the side wall of the housing away from the circuit components of the electricity metering box, which absorbs solar heat by color change to dry the space inside the electricity metering box, and a ventilation component installed above the color-changing glass to introduce airflow from outside the housing into the housing.

[0046] The detection module is installed on the inner wall of the box 1 to detect the load current of the power metering box and the air temperature inside the box.

[0047] A power supply module, which is connected to the dehumidification module and the detection module respectively, is used to provide electrical energy, including a solar power generation module disposed above the ventilation component to convert solar energy into electrical energy;

[0048] A control module, connected to the dehumidification module, the detection module, and the power supply module, is used to determine a first dehumidification method based on the Pearson correlation coefficient between the humidity inside the energy metering box and the current fluctuation of the load current, including ventilation of the internal space of the energy metering box.

[0049] Alternatively, the second dehumidification method can be determined based on the instantaneous power generation voltage generated by the power supply module when exposed to sunlight, and the extension length of the solar power generation module and the location of the leak to be inspected can be determined based on the humidity change of the air humidity inside the box after the second dehumidification method is executed.

[0050] The second dehumidification method includes adjusting the heating temperature of the heating component or adjusting the color of the color-changing glass 6.

[0051] Specifically, the electricity metering box is also equipped with circuit components for electricity metering boxes, single-phase current transformers, multi-function electricity meters, medium-voltage power line carrier slave devices, low-voltage carrier concentrators, low-voltage composite switches, reactive power compensation controllers, three-phase separate / common compensation capacitors, and other equipment. Among them, the circuit components for electricity metering boxes are the main switches of the electricity metering box.

[0052] Specifically, the photochromic glass 6 is an electrochromic glass 6.

[0053] Specifically, the ventilation components include:

[0054] Fan 5 is used to circulate air from outside the enclosure 1 into the enclosure 1.

[0055] A ventilation valve, connected to fan 5, is used to regulate the airflow.

[0056] The ventilation cover, which is connected to the fan 5, is used to control the sealing state of the fan 5.

[0057] Specifically, the heating components include:

[0058] An electric heating film 9 is installed on the inner wall of the box 1 to heat the space inside the box 1;

[0059] The electrode is connected to the electrothermal film 9 and is used to pass the current output by the solar power generation module into the electrothermal film 9 for electric heating.

[0060] Specifically, the circuit components used in the electricity metering box include a current transformer, a main circuit breaker, a residual current device (RCD), and a surge protector. The load current of the electricity metering box can be considered as the current flowing into the main circuit breaker.

[0061] In implementation, the energy metering box of this invention, by incorporating a dehumidification module, a detection module, a power supply module, and a control module, effectively solves the problems of equipment corrosion, increased inductance, current fluctuations, and decreased operational stability caused by humidity by monitoring humidity and current fluctuations within the energy metering box. The dehumidification module dehumidifies the interior of the energy metering box. The color-changing glass 6 absorbs heat through color change, drying the circuit components inside the energy metering box. When the color-changing glass 6 remains unchanged, it facilitates observation of any structural abnormalities within the energy metering box. The ventilation components provide ventilation to the box... Ventilation is provided inside the box 1 to further reduce humidity. The heating component heats and dehumidifies the box 1 when necessary to ensure the dryness inside the electricity metering box. The power supply module converts solar energy into electrical energy through the solar power generation component to provide power support for the dehumidification module and the detection module, thereby reducing energy consumption and improving the energy utilization efficiency of the electricity metering box. The control module determines whether humidity affects the circuit components based on the correlation between humidity and current fluctuations inside the electricity metering box, and then determines the corresponding handling method, thereby improving the accuracy of dehumidification of the environment inside the electricity metering box and improving the working stability of the electricity metering box.

[0062] Specifically, the detection module includes:

[0063] A humidity sensor is installed on the side wall of the box near the circuit components of the power metering box to detect the air humidity inside the box.

[0064] An ammeter, which is connected to the circuit elements of the energy metering box, is used to detect the load current of the energy metering box;

[0065] Several temperature sensors 8 are disposed on the inner wall of the enclosure to detect the temperature of the inner wall of the enclosure near the several terminals 7.

[0066] Specifically, several temperature sensors 8 are arranged on the inner wall of the housing 1 near the side where the wiring terminals 7 are located. The number of temperature sensors 8 is proportional to the number of wiring terminals 7. The temperature sensors 8 are contact temperature sensors 8. The specific location of the temperature sensors 8 near the wiring terminals 7 is not limited, as long as the temperature at the location of the wiring terminals 7 can be detected.

[0067] In implementation, the energy metering box of this invention uses a humidity sensor, an ammeter, a temperature sensor 8, and a voltage sensor to detect the operating parameters of the energy metering box. By detecting humidity changes inside the box 1, the humidity data provided to the control module determines the dehumidification method. The ammeter monitors the current fluctuations of the circuit components in the energy metering box, working in conjunction with the humidity sensor to determine the operating status of the energy metering box. Several temperature sensors 8 monitor the temperature fluctuations of the inner wall of the box 1 in real time, providing temperature data to the control module, which helps to promptly determine if there are any leaks in the energy metering box and ensures stable operation. The voltage sensor detects the instantaneous generation voltage of the solar power generation module to determine whether the solar energy is sufficient, ensuring that the heating temperature of the heating module can be adjusted in time when the solar energy conversion efficiency does not meet the requirements, or that the color of the color-changing glass 6 can be intelligently adjusted when the solar energy conversion efficiency meets the requirements, so as to achieve efficient energy utilization and dehumidification effect.

[0068] Specifically, the solar power generation assembly includes a first solar panel 3, a second solar panel 10 connected to the first solar panel, and a telescopic rod 4 connected to the first solar panel and the second solar panel respectively to adjust the distance between the connection position of the two solar panels and the upper surface of the housing.

[0069] Specifically, telescopic pole 4 is an electric telescopic pole 4.

[0070] Specifically, the solar power generation module also includes a first support shaft 2 connected to the first solar panel 3 to provide support for the first solar panel 3, and a second support shaft 11 connected to the second solar panel 10 to provide support for the second solar panel 10.

[0071] In implementation, the energy metering box of this invention is equipped with two solar panels 3 and a telescopic rod 4. The solar panels 3 convert solar energy into electrical energy to supply the devices inside the energy metering box. The angle between the two solar panels 3 can be changed by adjusting the telescopic rod 4, thereby adjusting the orientation of the solar panels 3 and optimizing the absorption efficiency of solar energy. When there is sufficient sunshine, the solar panels 3 can maximize the capture of solar energy and improve the power generation efficiency; while when there is insufficient sunshine or the angle of the sun changes, the telescopic rod 4 can be adjusted to keep the solar panels 3 at the optimal angle, ensuring a stable power supply, thereby improving the utilization rate of solar energy and enhancing the energy self-sufficiency of the energy metering box.

[0072] Specifically, the control module is connected to the ammeter and the humidity sensor respectively to obtain the air humidity inside the box and the current fluctuation of the load current in a single detection cycle, and calculate the Pearson correlation coefficient of the humidity and the current fluctuation. If the Pearson correlation coefficient is less than the preset coefficient, it is determined that the operating stability of the power metering box is less affected by humidity, and the ventilation component is controlled to operate.

[0073] If the Pearson correlation coefficient is greater than or equal to the preset coefficient, it is determined that the current fluctuation of the power metering box is greatly affected by humidity, and the instantaneous power generation voltage generated by the solar power generation module when exposed to sunlight is obtained.

[0074] Specifically, the preset coefficient of the intelligent power metering box used for centralized power supply in the substation generally ranges from [0.08, 0.12], and the preferred embodiment of the preset coefficient is 0.1.

[0075] Specifically, the current fluctuation is the difference between the maximum and minimum load current within a single detection cycle.

[0076] Specifically, the detection cycle of the intelligent power metering box used for centralized power supply in the substation generally ranges from 0.5h to 5h, with a preferred embodiment of 2.5h.

[0077] In practice, the energy metering box of this invention uses a preset coefficient to determine the correlation between humidity and current fluctuations. If the correlation is small, the circuit components of the energy metering box are relatively stable, and humidity has little impact on current fluctuations. The control module will mainly rely on the ventilation components for dehumidification, increasing air circulation within the energy metering box to quickly reduce humidity and avoid adverse effects on the circuit components caused by excessive humidity. If the correlation is large, it indicates that the current fluctuations of the circuit components in the energy metering box may be due to high humidity leading to severe corrosion of the energy metering box equipment, or changes in the insulation properties of the circuit due to high humidity. In this case, dehumidification through the ventilation components is not suitable for reducing the impact of corrosion. Therefore, by analyzing the instantaneous generated voltage, the environment in which the energy metering box is located, i.e., the sunlight conditions, is determined, thereby improving the accuracy of dehumidification of the energy metering box.

[0078] Specifically, the control module is connected to the solar power generation component and the heating component respectively, and is used to determine that the solar energy conversion efficiency does not meet the requirements when the operating stability of the power metering box is greatly affected by humidity and the instantaneous power generation voltage is less than the preset voltage, and to increase the heating temperature of the heating component.

[0079] Specifically, the heating temperature is negatively correlated with the instantaneous power generation voltage.

[0080] Specifically, the heating temperature is increased by increasing the current input to the heating film 9.

[0081] Specifically, the standard heating temperature of the heating components is 1°C higher than the outside air temperature.

[0082] Specifically, given that the size of the solar panel 3 is 800mm × 500mm, the preset voltage can be selected within a range of [9V, 15V], and the preferred embodiment of the preset voltage of the solar panel 3 is 12V.

[0083] In practice, when the difference between the instantaneous generated voltage and the preset voltage is within 1V, the heating temperature increases by 0.5℃. When the difference between the instantaneous generated voltage and the preset voltage exceeds 1V, the heating temperature increases by 0.4℃ for every 1V difference. For example, if the instantaneous generated voltage is 10V and the current standard heating temperature is 26℃, the heating temperature of the heating component is adjusted from the standard heating temperature to 26℃ + 0.5℃ + 0.4℃ = 26.9℃.

[0084] In practice, the energy metering box of this invention uses a preset voltage to determine the solar energy conversion efficiency. When the solar energy conversion efficiency does not meet the requirements, the light energy decreases. By increasing the heating temperature of the heating component, the temperature inside the energy metering box is increased, thereby accelerating the evaporation of moisture and achieving dehumidification. The heating dehumidification method dehumidifies the energy metering box as quickly as possible under conditions of weak light energy and fluctuating current. If the humidity inside the energy metering box is too high, it will not only affect the performance of the circuit components used in the energy metering box, but by increasing the heating temperature of the heating component, the temperature inside the energy metering box can be rapidly increased, accelerating the evaporation of moisture and increasing the effectiveness of dehumidification.

[0085] Specifically, the control module is connected to the color-changing glass 6 and is used to determine that the solar energy conversion efficiency meets the requirements when the operation stability of the power metering box is greatly affected by humidity and the instantaneous power generation voltage is greater than or equal to the preset voltage, and to supply power to the color-changing glass 6 to make it change to a light-absorbing color.

[0086] Specifically, the light-absorbing colors of the photochromic glass 6 include gray, blue, brown, and dark brown, with the specific color depending on the type of photochromic glass 6.

[0087] In practice, the energy metering box of this invention changes its color by passing electricity through the photochromic glass 6. Since ambient natural light has a significant impact on the operation of this energy metering box, and the ambient temperature is low when there is little sunlight, resulting in a decrease in ambient humidity, the photochromic glass 6 absorbs more light energy and converts it into heat energy to heat and dehumidify the inside of the energy metering box. The amount of electricity passed through the photochromic glass 6 is small so as to store more solar energy. After absorbing heat, the photochromic glass 6 can dry the circuit components inside the energy metering box, further ensuring the dryness of the inside of the energy metering box and reducing energy consumption.

[0088] Specifically, the control module is connected to the humidity sensor to obtain the humidity change per unit time after the second dehumidification method is executed. If the humidity change is less than the preset change, it is determined that the dehumidification effect does not meet the requirements, and ventilation is introduced into the power metering box and the temperature change after ventilation is obtained.

[0089] Specifically, when the ambient temperature is not less than 15°C, the general range of the preset humidity change of the power metering box is [1%, 5%], and the preferred embodiment of the preset humidity change is 2%.

[0090] Specifically, the control module is connected to the solar power generation component and several temperature sensors respectively, and is used to determine that there is air leakage at the terminal 7 of the power metering box when the temperature change is greater than the preset temperature change, and to reduce the extension length of the telescopic rod.

[0091] Specifically, the total length of the two solar panels after reducing the telescopic length is the width of the upper surface of the power metering box.

[0092] Specifically, the general range of the preset temperature change is [1℃, 1.5℃], and the preferred embodiment of the preset temperature change is 1.2℃.

[0093] Specifically, the control module is connected to several temperature sensors to identify the corresponding locations of temperature sensors whose temperature changes are greater than the preset temperature change as leak locations to be inspected, and to transmit the location information of the leak locations to the backend.

[0094] In practice, the energy metering box of the present invention determines whether incomplete drying is caused by air leakage by ventilating the energy metering box. When there is an air leakage in the energy metering box, ventilation causes the temperature at the leakage location to drop, and the leakage point is quickly located by the data change of the temperature sensor 8. The leakage location is then transmitted to the backend, thereby improving the long-term operational stability of the energy metering box. In addition, by increasing the included angle of the solar panel 3 of the leaking energy metering box, the entry of dust is reduced.

[0095] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A smart electric energy metering box characterized in that, The utility model relates to a kind of electric energy metering box, including: Box, including terminal, wherein, the inside of box is provided with circuit element for electric energy metering box; Dehumidification module, which is connected to the box, is used to dehumidify the air in the box, including heating assembly provided on the inner wall of the box to heat and dehumidify the space in the box, color-changing glass provided on the side wall of the box away from the circuit element for electric energy metering box to absorb solar heat by color change to dry the space in the electric energy metering box, and ventilation assembly provided above the color-changing glass to introduce airflow outside the box into the box; Detection module, which is provided on the inner wall of the box, is used to detect the load current of the electric energy metering box and the air temperature in the box; Power supply module, which is connected to the dehumidification module and the detection module respectively, is used to provide electric energy, including solar power generation assembly provided above the ventilation assembly to convert solar energy into electric energy; Control module, which is connected to the dehumidification module, the detection module and the power supply module respectively, is used to determine the first dehumidification mode according to the humidity in the electric energy metering box and the Pearson correlation coefficient of current fluctuation of the load current, including ventilating the internal space of the electric energy metering box, Or, determine the second dehumidification mode according to the instantaneous generation voltage generated by the power supply module when it is illuminated by sunlight, and determine the extension length of the solar power generation assembly and the air leakage position to be repaired according to the humidity change amount of the air humidity in the box after the second dehumidification mode is executed; The second dehumidification mode includes adjusting the heating temperature of the heating assembly, or adjusting the color of the color-changing glass; The control module is connected to the solar power generation assembly and the heating assembly respectively, to determine that the solar energy conversion efficiency does not meet the requirements and increase the heating temperature of the heating assembly when the running stability of the electric energy metering box is greatly affected by humidity and the instantaneous generation voltage is less than the preset voltage. The control module is connected to the color-changing glass, to determine that the power supply module reaches the storage condition and power on the color-changing glass to change it to light-absorbing color when the running stability of the electric energy metering box is greatly affected by humidity and the instantaneous generation voltage is greater than or equal to the preset voltage.

2. The intelligent electric energy metering box according to claim 1, characterized in that, The detection module includes: Humidity sensor, which is provided on the side wall of the box close to the circuit element for electric energy metering box, is used to detect the air humidity in the box; Ammeter, which is connected to the circuit element for electric energy metering box, is used to detect the load current of the electric energy metering box; Several temperature sensors, which are provided on the inner wall of the box, are used to detect the temperature of the inner wall of the box close to several terminal.

3. The intelligent electric energy metering box according to claim 2, characterized in that, The solar power generation assembly includes a first solar panel, a second solar panel connected to the first solar panel, and an extension rod connected to the first solar panel and the second solar panel respectively to adjust the distance between the connected position of the two solar panels and the upper surface of the box.

4. The intelligent electric energy metering box according to claim 3, characterized in that, The control module is connected with the ammeter and the humidity sensor respectively to acquire the air humidity and the current fluctuation of the load current in a single detection period respectively, and to calculate the Pearson correlation coefficient of the humidity and the current fluctuation, and if the Pearson correlation coefficient is less than a preset coefficient, it is determined that the operation stability of the electric energy metering box is less affected by humidity, and the ventilation component is controlled to operate. If the Pearson correlation coefficient is greater than or equal to the preset coefficient, it is determined that the current fluctuation of the electric energy metering box is greatly affected by humidity, and the instantaneous generating voltage generated by the solar power generation component when it is irradiated by sunlight is acquired.

5. The intelligent electric energy metering box according to claim 4, characterized in that, The heating temperature is negatively correlated with the instantaneous generating voltage.

6. The intelligent electric energy metering box according to claim 5, characterized in that, The control module is connected with the humidity sensor to acquire the humidity change amount in a unit monitoring time after the second dehumidification mode is executed, and if the humidity change amount is less than a preset change amount, it is determined that the dehumidification effect does not meet the requirements, and the electric energy metering box is ventilated and the temperature change amount after ventilation is acquired.

7. The intelligent electric energy metering box according to claim 6, characterized in that, The control module is connected with the solar power generation component and a plurality of temperature sensors respectively to determine that the wiring terminal of the electric energy metering box is leaking if the temperature change amount is greater than a preset temperature change amount, and to reduce the extension length of the telescopic rod.

8. The intelligent electric energy metering box according to claim 7, characterized in that, The control module is connected with a plurality of temperature sensors respectively to determine the corresponding position of the temperature sensor whose temperature change amount is greater than the preset temperature change amount as a leaking position to be repaired, and to transmit the position information of the leaking position to be repaired to the background.

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