Self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormity early warning and use method of self-adaptive heat dissipation type medium-voltage power distribution cabinet

Abstract

The invention discloses a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormity early warning and a use method thereof, and the cabinet comprises a medium-voltage power distribution cabinet body, and each electrical cavity is provided with a natural convection heat dissipation assembly, a forced air cooling heat dissipation assembly and a circulating liquid cooling heat dissipation assembly. The natural convection heat dissipation assembly, the forced air cooling heat dissipation assembly and the circulating liquid cooling heat dissipation assembly are all connected with the temperature rise early warning monitoring control assembly, and temperature monitoring, temperature rise early warning and self-adaptive multi-stage adjustment heat dissipation of the medium-voltage power distribution cabinet are achieved. Meanwhile, the environment temperature and the device temperature are collected, a three-level early warning mechanism rapidly identifies the temperature rise level, fault positioning is accurate to a specific device, a natural convection-forced air cooling-liquid cooling auxiliary three-level heat dissipation mode is adopted, accurate matching of the heat dissipation intensity and the temperature requirement is achieved, and the heat dissipation efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medium-voltage power distribution cabinets, and particularly relates to a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormality early warning and a use method thereof. BACKGROUND

[0002] As a core equipment of a 10kV-35kV medium-voltage power distribution system, the medium-voltage power distribution cabinet is widely used in key scenes such as industrial plants, urban substations, high-rise buildings and rail transit, and bears important functions of power distribution, line protection and fault isolation. The operation reliability of the medium-voltage power distribution cabinet directly determines the power supply stability and safety of downstream power loads. With the continuous growth of the demand for electricity in modern industrial production and the intelligent upgrading of the power distribution system, the single-machine capacity of the medium-voltage power distribution cabinet is continuously improved. The devices such as busbars, circuit breakers and cable terminals integrated inside the cabinet are in a high-load operation state for a long time. The heat generated by the device loss is easy to accumulate inside the cabinet, resulting in abnormal temperature rise.

[0003] The existing medium-voltage power distribution cabinet has the following problems in operation: 1. The heat dissipation mode is fixed, and the energy efficiency and heat dissipation effect are unbalanced: the existing medium-voltage power distribution cabinet mostly uses fixed air cooling or natural heat dissipation, which cannot dynamically adjust the heat dissipation intensity according to the internal device temperature. When the load is low, the heat dissipation is excessive, resulting in energy waste. When the load is high, the heat dissipation is insufficient, which is easy to cause device overheating and aging; 2. The temperature rise early warning is lagging, and the fault response is passive: the temperature rise early warning of the existing medium-voltage power distribution cabinet mostly relies on manual regular inspection or single temperature threshold alarm, which has problems of untimely early warning (such as being unable to quickly capture the sudden temperature rise caused by sudden overload) and poor linkage (the early warning needs to be manually started for heat dissipation, and cannot automatically respond), which is easy to cause equipment tripping, insulation damage and even fire accidents; Therefore, the application provides a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormality early warning and a use method thereof. SUMMARY

[0004] The application aims to provide a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormality early warning and a use method thereof, so as to solve the problems in the background.

[0005] To achieve the above-mentioned purpose, the application provides the following technical scheme: a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormality early warning, comprising: A medium-voltage power distribution cabinet body is formed by an insulating partition plate inside the medium-voltage power distribution cabinet body, and a cabinet door is hinged to the side of each cavity of the medium-voltage power distribution cabinet body. A natural convection heat dissipation assembly is arranged on each cavity, which is used for air natural convection circulation heat dissipation. A forced air cooling heat dissipation assembly is arranged in each of the electrical cavities for forced air cooling heat dissipation. A circulating liquid cooling heat dissipation assembly is arranged at the rear side of the medium-voltage power distribution cabinet body corresponding to the position of each of the electrical cavities for realizing circulating liquid cooling heat dissipation. A temperature rise early warning monitoring control assembly is connected with the natural convection heat dissipation assembly, the forced air cooling heat dissipation assembly and the circulating liquid cooling heat dissipation assembly to realize temperature monitoring, temperature rise early warning and self-adaptive multi-stage regulation heat dissipation of the medium-voltage power distribution cabinet.

[0006] Preferably, the natural convection heat dissipation assembly comprises a dustproof filter screen and an electric louver. A rectangular slot is formed at the top and the bottom of the medium-voltage power distribution cabinet body corresponding to each of the electrical cavities, a dustproof filter screen is arranged at the inner side of each of the rectangular slots, and an electric louver is arranged at the outer side of each of the rectangular slots, and the electric louver is connected with the temperature rise early warning monitoring control assembly.

[0007] Preferably, the forced air cooling heat dissipation assembly comprises a mounting plate and a heat dissipation fan. A mounting plate is arranged at the lower part of the inner side of each of the electrical cavities, at least one heat dissipation fan is arranged on each of the mounting plates, and each of the heat dissipation fans is connected with the temperature rise early warning monitoring control assembly.

[0008] Preferably, the heat dissipation fan is vertically aligned with the center of the electric louver. The blowing direction of the heat dissipation fan is from bottom to top.

[0009] Preferably, the circulating liquid cooling heat dissipation assembly comprises an insulating heat conduction plate, a liquid cooling base plate, a circulating pipe and a liquid cooling circulating machine. The insulating heat conduction plate is arranged at the rear side of the medium-voltage power distribution cabinet body, and the liquid cooling base plate is arranged at the position corresponding to the electrical cavities on the insulating heat conduction plate. A circulating channel is formed in the liquid cooling base plate, the liquid cooling circulating machine is arranged at the bottom of the medium-voltage power distribution cabinet body corresponding to the position of the liquid cooling base plate, the circulating channel and the liquid cooling circulating machine are connected in circulation through the circulating pipe, and the liquid cooling circulating machine is connected with the temperature rise early warning monitoring control assembly.

[0010] Preferably, the circulating channel is an S-shaped circulating channel.

[0011] Preferably, the temperature rise early warning monitoring control assembly comprises a temperature sensor and a touch display terminal. A plurality of temperature sensors are arranged in each of the electrical cavities, and the temperature sensors are arranged at different positions of the electrical cavities and key electrical components. The electric louver, the cooling fan and the liquid cooling circulation machine are connected with the touch display terminal.

[0012] Preferably, the temperature rise early warning monitoring control assembly further comprises a pre-warning LED lamp. The pre-warning LED lamp is provided with a plurality of pre-warning LED lamps of three colors corresponding to each electrical cavity, and the pre-warning LED lamp is connected with the touch display terminal.

[0013] Preferably, the temperature rise early warning monitoring control assembly further comprises a buzzer alarm, and the buzzer alarm is arranged at the top of the medium-voltage power distribution cabinet body, and the buzzer alarm is connected with the touch display terminal.

[0014] A use method of a self-adaptive heat dissipation type medium-voltage power distribution cabinet based on temperature rise abnormal early warning, comprising the following steps: A, real-time temperature acquisition: The temperature rise early warning monitoring control assembly acquires the overall environmental temperature in each electrical cavity and the temperature of key electrical components through the temperature sensor in real time, and transmits the acquired temperature data to the touch display terminal. B, temperature rise state judgment and hierarchical response: The touch display terminal compares the acquired temperature data with the preset temperature threshold group, and triggers the corresponding level of early warning and self-adaptive heat dissipation adjustment according to the comparison result: When the temperature is less than or equal to 40℃, the zero-level state is triggered: the electric louver of the natural convection heat dissipation assembly is opened, the forced air cooling heat dissipation assembly and the circulating liquid cooling heat dissipation assembly are closed, and only air natural convection heat dissipation is used; When 40℃<temperature≤50℃, the first-level early warning is triggered: the pre-warning LED lamp is turned on with the first color light, the cooling fan of the forced air cooling heat dissipation assembly is started, and the cooling fan speed is adjusted according to the temperature, the cooling fan speed is increased by 20% for every 5℃ increase in temperature, the highest speed of the cooling fan does not exceed 100% of the rated speed, and the electric louver remains open; When 50℃<temperature≤60℃, the second-level early warning is triggered: the pre-warning LED lamp is turned on with the second color light, the buzzer alarm emits a low-frequency alarm sound, the forced air cooling heat dissipation assembly is maintained at full speed, and the liquid cooling circulation machine of the circulating liquid cooling heat dissipation assembly is started to perform liquid cooling auxiliary heat dissipation through the S-shaped circulation channel. When the temperature > 60℃, the third level of early warning is triggered: the control early warning LED light is lit with the third color light, the high frequency alarm sound is emitted by the buzzer alarm, the synchronous display of the fault electrical cavity and the specific electrical device position is displayed by the touch display terminal, the circulating liquid cooling heat dissipation assembly is operated with the maximum flow, and the forced air cooling heat dissipation assembly is full load worked; C, dynamic adjustment and reset: During the step B grading response process, the temperature data is continuously collected by the temperature rise early warning monitoring control assembly: If the temperature drops below the corresponding threshold value and is stable for 3-5 minutes, the early warning level and the heat dissipation intensity are automatically reduced; When the fault processing is completed and the temperature in all electrical cavities is ≤40℃, the system is automatically reset to the zero level state, all early warning and active heat dissipation assemblies are turned off, and only the natural convection heat dissipation is reserved.

[0015] Compared with the prior art, the beneficial effects of the present application are: 1, more accurate temperature rise monitoring and more timely early warning response: by arranging temperature sensors at different directions of the electrical cavity and key devices, the ambient temperature and device temperature are collected at the same time, the early warning lag problem of "device temperature rise but ambient temperature not up to standard" is avoided, the three level early warning mechanism is combined with color LED light and high and low frequency buzzer, the temperature rise level can be quickly identified, the fault positioning is accurate to the specific device, and the maintenance troubleshooting time is shortened by more than 50%; 2, self-adaptive heat dissipation adjustment, balanced energy consumption and effect: the "natural convection-forced air cooling-liquid cooling auxiliary" three level heat dissipation mode is adopted, the quantitative adjustment rule of fan speed (the speed is increased by 20% for every 5℃ temperature rise) is matched, the accurate matching of heat dissipation intensity and temperature demand is realized, the S-shaped liquid cooling channel prolongs the heat exchange time, the fan and the louver are aligned up and down to optimize the air duct, the heat dissipation efficiency is improved by 40%, and the energy consumption is reduced by 30%-35% compared with the fixed air cooling mode; 3, higher operation reliability: the insulation partition separates the independent electrical cavities to avoid temperature cross influence; the dust filter screen is combined with the electric louver to balance heat dissipation and dust prevention; the insulation heat conduction plate ensures the safety of the liquid cooling system, the overall protection level reaches IP54, and the device failure rate is reduced by more than 60% which can adapt to industrial dust, humidity and other harsh environments. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall three-dimensional structure schematic diagram of the present application; Figure 2 It is the overall three-dimensional structure schematic diagram of the present application; Figure 3 It is the front view structure schematic diagram of the present application; Figure 4 It is the overall three-dimensional structure schematic diagram of the present application; Figure 5It is a schematic view of the front view of the present application. Figure 6 It is a schematic view of the rear view of the present application.

[0017] In the figure: 1, medium voltage power distribution cabinet body; 101, insulation partition; 102, electrical cavity; 103, cabinet door; 104, rectangular slot; 2, natural convection heat dissipation assembly; 201, dust filter screen; 202, electric louver; 3, forced air cooling heat dissipation assembly; 301, mounting plate; 302, cooling fan; 4, circulating liquid cooling heat dissipation assembly; 401, insulating heat conducting plate; 402, liquid cooling base plate; 403, circulating pipe; 404, liquid cooling circulating machine; 405, circulating channel; 5, temperature rise early warning monitoring control assembly; 501, temperature sensor; 502, touch display terminal; 503, early warning LED lamp; 504, buzzer alarm. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] Please refer to Figures 1-6 The present application provides a self-adaptive heat dissipation type medium voltage power distribution cabinet based on temperature rise anomaly early warning, which comprises: The medium voltage power distribution cabinet body 1 is divided into several independent electrical cavities 102 by the insulation partition 101, which can avoid temperature cross-influence between different cavities and improve the heat dissipation pertinence. Each electrical cavity 102 corresponds to a hinged cabinet door 103, which facilitates device maintenance and maintenance. The cabinet door 103 is provided with an observation window, which can intuitively monitor the internal state.

[0020] The natural convection heat dissipation assembly 2 comprises a dust filter screen 201 and an electric louver 202. The medium voltage power distribution cabinet body 1 is provided with a rectangular slot 104 on the top and bottom of each electrical cavity 102. The dust filter screen 201 is arranged on the inner side of the rectangular slot 104, which can filter dust and impurities in the air and prevent device dust from causing short circuit. The electric louver 202 is arranged on the outer side of the rectangular slot 104 and connected with the temperature rise early warning monitoring control assembly 5. The opening and closing of the louver controls the on-off of the natural convection channel.

[0021] Forced air cooling heat dissipation assembly 3: composed of mounting plate 301 and cooling fan 302, the lower side of each electrical cavity 102 is provided with mounting plate 301, at least one cooling fan 302 is arranged on the mounting plate 301, the cooling fan 302 is aligned with the center of the electric shutter 202 up and down, and the blowing direction is from bottom to top, forming a "down-in and up-out" forced convection air duct, which improves the heat dissipation efficiency; the cooling fan 302 is connected with the temperature rise early warning monitoring control assembly 5 to realize speed regulation and start-stop control.

[0022] Circulating liquid cooling heat dissipation assembly 4: including insulation heat conduction plate 401, liquid cooling base plate 402, circulating pipe 403 and liquid cooling circulating machine 404, the insulation heat conduction plate 401 is arranged at the rear side of the medium voltage distribution cabinet body 1, and has heat conduction and insulation functions to avoid the risk of electric shock; the liquid cooling base plate 402 is arranged at the position corresponding to the electrical cavity 102 of the insulation heat conduction plate 401, and an S-shaped circulating channel 405 is formed in the inside, which can prolong the residence time of the cooling liquid and enhance the heat exchange effect; the liquid cooling circulating machine 404 is arranged at the bottom of the cabinet body corresponding to the position of the liquid cooling base plate 402, and forms a circulating loop through the connection of the circulating pipe 403 and the circulating channel 405, and the liquid cooling circulating machine 404 is connected with the temperature rise early warning monitoring control assembly 5 to realize flow regulation and start-stop control.

[0023] Temperature rise early warning monitoring control assembly 5: including temperature sensor 501, touch display terminal 502, early warning LED lamp 503 and buzzer alarm 504, a plurality of temperature sensors 501 are arranged in each electrical cavity 102 and distributed at different positions and key electrical devices (such as bus joint and circuit breaker terminal), which can simultaneously collect the cavity environment temperature and device temperature; the touch display terminal 502 is arranged on the cabinet door 103, receives the temperature sensor 501 data and displays, and controls each heat dissipation assembly and early warning assembly; each electrical cavity 102 corresponds to three color early warning LED lamps 503 for hierarchical early warning indication; the buzzer alarm 504 is arranged at the top of the cabinet body for emitting sound and light alarm signals.

[0024] The use method of the adaptive heat dissipation type medium voltage distribution cabinet based on temperature rise abnormal early warning provided by the application comprises the following steps: Step A: Real-time temperature acquisition: The temperature rise early warning monitoring control assembly 5 collects the temperature data of the overall environment temperature and key electrical devices such as bus joint and circuit breaker terminal in the cavity in real time through the temperature sensors 501 distributed at different positions and key devices of each electrical cavity 102, and transmits the collected temperature data to the touch display terminal 502 for processing.

[0025] Step B: Temperature rise state judgment and hierarchical response: The touch display terminal 502 compares the collected temperature data with the preset temperature threshold group (40℃, 50℃, 60℃), triggers the corresponding level of early warning and adaptive heat dissipation adjustment: When the temperature is ≤40℃, the zero-level state is triggered: the electric louver 202 is controlled to open, the cooling fan 302 and the liquid cooling circulation machine 404 are closed, and only natural air convection is used for basic heat dissipation; When 40℃< the temperature is ≤50℃, the first-level early warning is triggered: the early warning LED lamp 503 corresponding to the electrical cavity 102 is controlled to light up the first color light (such as green), the cooling fan 302 is started, the speed is adjusted according to the rule of “the speed is increased by 20% when the temperature is increased by 5℃”, the electric louver 202 is kept open, and the forced air cooling effect is enhanced; When 50℃< the temperature is ≤60℃, the second-level early warning is triggered: the early warning LED lamp 503 is controlled to light up the second color light (such as yellow), the buzzer 504 emits a low-frequency alarm sound, the cooling fan 302 is kept running at full speed, the liquid cooling circulation machine 404 is started, the cooling liquid exchanges heat with the electrical cavity 102 through the S-shaped circulation channel 405, and liquid cooling auxiliary heat dissipation is realized; When the temperature is >60℃, the third-level early warning is triggered: the early warning LED lamp 503 is controlled to light up the third color light (such as red), the buzzer 504 emits a high-frequency alarm sound, the touch display terminal 502 synchronously displays the fault electrical cavity 102 and the specific fault device position, the liquid cooling circulation machine 404 runs at the maximum flow, and the cooling fan 302 works at full load, so that the strongest heat dissipation protection is realized; Step C: dynamic adjustment and reset: In the hierarchical response process, the temperature rise early warning monitoring control assembly 5 continuously collects temperature data: if the temperature drops below the corresponding threshold value and is stable for 3-5 minutes, the early warning level and the heat dissipation intensity are automatically reduced (such as from the second-level early warning to the first-level early warning, and the liquid cooling circulation machine is closed); When the fault handling is completed and the temperature in all electrical cavities 102 is ≤40℃, the system is automatically reset to the zero-level state, all early warning and active heat dissipation assemblies are closed, and only natural convection heat dissipation is reserved.

[0026] The beneficial effects of the application are as follows: 1. The temperature rise monitoring is more accurate, and the early warning response is more timely: by arranging temperature sensors at different positions of the electrical cavity and key devices, the ambient temperature and the device temperature are collected at the same time, so that the problem of early warning lag caused by “device temperature rise but ambient temperature not meeting the standard” is avoided; the three-level early warning mechanism combines color LED lamps and high-low frequency buzzing, can quickly identify the temperature rise level, accurately locates the fault to the specific device, and shortens the maintenance and troubleshooting time by more than 50%; 2. Heat dissipation adjustment self-adaption, energy consumption and effect balance: adopt "natural convection-forced air cooling-liquid cooling auxiliary" three-level heat dissipation mode, cooperate with the quantitative adjustment rule of fan speed (temperature every 5 ℃ speed increase 20%), realize the precise matching of heat dissipation intensity and temperature demand; S-shaped liquid cooling channel prolongs heat exchange time, and the fan and louvers are aligned to optimize the air duct, which improves the heat dissipation efficiency by 40%, and reduces the energy consumption by 30%-35% compared with the fixed air cooling mode; 3. Higher operation reliability: insulation partition separates independent electrical cavity to avoid temperature cross-influence; dust filter screen combines with electric louvers to balance heat dissipation and dust prevention; insulation heat conduction plate ensures the safety of liquid cooling system, and the overall protection level reaches IP54, which can adapt to harsh environments such as industrial dust and humidity, and the equipment failure rate is reduced by more than 60%.

[0027] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An adaptive heat dissipation medium-voltage switchgear based on abnormal temperature rise early warning, characterized in that, include: Medium voltage power distribution cabinet (1), the medium voltage power distribution cabinet (1) is divided into several electrical cavities (102) by insulating partitions (101), and cabinet doors (103) are hinged to the cavity side of each electrical cavity (102) on the medium voltage power distribution cabinet (1). Natural convection heat dissipation component (2), each of the electrical cavities (102) is provided with the natural convection heat dissipation component (2) for natural air convection circulation heat dissipation; Forced air cooling heat dissipation component (3), each of the electrical cavities (102) is provided with the forced air cooling heat dissipation component (3) for forced air cooling heat dissipation; The circulating liquid cooling heat dissipation component (4) is provided on the rear side of the medium voltage power distribution cabinet (1) at the position corresponding to each of the electrical cavities (102) to achieve circulating liquid cooling heat dissipation; Temperature rise early warning monitoring and control component (5), the natural convection heat dissipation component (2), the forced air cooling heat dissipation component (3) and the circulating liquid cooling heat dissipation component (4) are all connected to the temperature rise early warning monitoring and control component (5) to realize temperature monitoring, temperature rise early warning and adaptive multi-level heat dissipation of medium voltage distribution cabinet.

2. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 1, characterized in that: The natural convection heat dissipation component (2) includes a dust filter (201) and motorized louvers (202). The medium-voltage distribution cabinet (1) has rectangular slots (104) at the top and bottom of each electrical cavity (102). The inner side of each rectangular slot (104) is provided with a dust filter (201), and the outer side of each rectangular slot (104) is provided with an electric louver (202). The electric louver (202) is connected to the temperature rise early warning monitoring and control component (5).

3. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 2, characterized in that: The forced air cooling heat dissipation component (3) includes a mounting plate (301) and a heat dissipation fan (302). Each of the electrical cavities (102) has a mounting plate (301) on its lower inner side. Each mounting plate (301) has at least one cooling fan (302) on it. Each cooling fan (302) is connected to the temperature rise early warning monitoring and control component (5).

4. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 3, characterized in that: The cooling fan (302) is vertically aligned with the center of the electric louver (202); The cooling fan (302) blows air from bottom to top.

5. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 4, characterized in that: The circulating liquid cooling heat dissipation assembly (4) includes an insulating heat-conducting plate (401), a liquid cooling substrate (402), a circulation pipe (403), and a liquid cooling circulator (404). The insulating heat-conducting plate (401) is disposed on the rear side of the medium-voltage distribution cabinet (1), and the liquid-cooled substrate (402) is disposed on the insulating heat-conducting plate (401) at the position corresponding to the electrical cavity (102); A circulation channel (405) is provided inside the liquid-cooled substrate (402). The liquid-cooled circulator (404) is located at the bottom of the medium-voltage distribution cabinet (1) corresponding to the position of the liquid-cooled substrate (402). The circulation channel (405) and the liquid-cooled circulator (404) are connected and circulated through the circulation pipe (403). The liquid-cooled circulator (404) is connected to the temperature rise early warning monitoring and control component (5).

6. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 5, characterized in that: The circulation channel (405) is an S-shaped circulation channel.

7. A medium-voltage distribution cabinet with adaptive heat dissipation based on abnormal temperature rise early warning as described in claim 6, characterized in that: The temperature rise early warning monitoring and control component (5) includes a temperature sensor (501) and a touch display terminal (502). Each of the electrical cavities (102) is provided with a plurality of temperature sensors (501), which are located in different positions of the electrical cavities (102) and at key electrical components. The touch display terminal (502) is installed on the cabinet door (103), and each of the temperature sensors (501) is connected to the touch display terminal (502). The electric louvers (202), the cooling fan (302), and the liquid cooling circulator (404) are all connected to the touch display terminal (502).

8. The adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning as described in claim 7, characterized in that: The temperature rise early warning monitoring and control component (5) also includes an early warning LED light (503). The warning LED (503) is provided in several parts, and each electrical cavity (102) corresponds to three colors of the warning LED (503). The warning LED (503) is connected to the touch display terminal (502).

9. A medium-voltage distribution cabinet with adaptive heat dissipation based on abnormal temperature rise early warning as described in claim 7, characterized in that: The temperature rise early warning monitoring and control component (5) also includes a buzzer alarm (504), which is located on the top of the medium voltage power distribution cabinet (1) and is connected to the touch display terminal (502).

10. A method of using an adaptive heat dissipation medium-voltage distribution cabinet based on abnormal temperature rise early warning, as described in any one of claims 1-9, characterized in that, Includes the following steps: A. Real-time temperature acquisition: The temperature rise early warning monitoring and control component (5) collects the overall ambient temperature and the temperature of key electrical components in each electrical cavity (102) in real time through the temperature sensor (501), and transmits the collected temperature data to the touch display terminal (502). B. Temperature rise status assessment and graded response: The touch display terminal (502) compares the collected temperature data with a preset temperature threshold group, and triggers corresponding level of warning and adaptive heat dissipation adjustment based on the comparison result: When the temperature is ≤40℃, the zero-level state is triggered: the electric louvers (202) of the natural convection heat dissipation component (2) are opened, the forced air cooling heat dissipation component (3) and the circulating liquid cooling heat dissipation component (4) are closed, and heat dissipation is achieved only through natural air convection. When 40℃ < temperature ≤ 50℃, a first-level warning is triggered: the warning LED (503) is turned on with the first color light, and the cooling fan (302) of the forced air cooling heat dissipation component (3) is started at the same time. The speed of the cooling fan (302) is adjusted according to the temperature. For every 5℃ increase in temperature, the speed of the cooling fan (302) is increased by 20%. The maximum speed of the cooling fan (302) does not exceed 100% of its rated speed. The electric louver (202) remains open. When 50℃ < temperature ≤ 60℃, a level 2 warning is triggered: the warning LED (503) lights up with the second color light, the buzzer alarm (504) emits a low-frequency alarm sound, and at the same time the forced air cooling heat dissipation component (3) is kept running at full speed, the liquid cooling heat dissipation component (4) is started and the liquid cooling circulation machine (404) is started, and liquid cooling auxiliary heat dissipation is carried out through the S-shaped circulation channel (405); When the temperature is >60℃, a level 3 warning is triggered: the warning LED (503) lights up with the third color light, the buzzer alarm (504) emits a high-frequency alarm sound, the touch display terminal (502) displays the faulty electrical cavity (102) and the specific location of the electrical components, the circulating liquid cooling heat dissipation component (4) operates at maximum flow, and the forced air cooling heat dissipation component (3) works at full load; C. Dynamic adjustment and reset: During the graded response process in step B, the temperature rise early warning monitoring and control component (5) continuously collects temperature data: If the temperature drops below the corresponding threshold and remains stable for 3-5 minutes, the warning level and heat dissipation intensity will be automatically reduced. When the fault is resolved and the temperature inside all electrical cavities (102) is ≤40℃, the system automatically resets to the zero-level state, shuts down all warning and active heat dissipation components, and retains only natural convection heat dissipation.

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