Heat dissipation control system applied to power cabinet

Abstract

The invention relates to the technical field of power cabinet heat dissipation control, in particular to a heat dissipation control system applied to a power cabinet, which comprises a temperature acquisition module, a temperature analysis module, a heat dissipation condition analysis module and an execution module, according to the invention, through the temperature acquisition module, the temperature analysis module and the heat dissipation condition analysis module, comprehensive analysis is carried out on factors influencing heat dissipation of the electric power cabinet, such as bus temperature, bus spacing and ventilation opening area, and data response is made through the execution module, so that the heat dissipation effect of the electric power cabinet is improved; on-off control and power control are performed on the heat dissipation equipment according to numerical value changes of the execution parameters I, II and III, so that the control accuracy of the temperature change of the power cabinet is improved; according to the invention, power control is carried out on overall heat dissipation equipment such as a circulating fan, internal heat balance analysis and control are carried out on local high temperature, and the intelligent level of the heat dissipation control technology of the power cabinet is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation control of power cabinets, and in particular to a heat dissipation control system applied to power cabinets. Background Art

[0002] The power cabinet is an important basic component in the power transmission and distribution link. It can be used to realize the diversion and transmission of current. It mainly consists of two parts: the switch cabinet housing and the busbar. In the actual operation of the power cabinet, the busbar is always in a heating state due to the passage of current, and the busbar is the main source of heat in the power cabinet. The greater the busbar resistance loss, the higher the surface temperature rise. The busbar temperature rise is an important factor for the safe and stable operation of the power cabinet. Excessive temperature rise will affect the current load capacity of the busbar. Therefore, it is necessary to study the factors that affect the heat dissipation of the power cabinet. The temperature field distribution of the power cabinet busbar is closely related to factors such as the busbar spacing and the vent area.

[0003] However, the existing power cabinet heat dissipation control technology does not conduct a comprehensive analysis of the factors affecting the heat dissipation of the power cabinet, such as busbar temperature, busbar spacing, and vent area. The data collection and analysis lack pertinence, which affects the heat dissipation effect of the power cabinet.

[0004] Secondly, the existing power cabinet heat dissipation control technology often leads to a contradiction between heat dissipation efficiency and equipment power consumption. For traditional heat dissipation methods, such as fan heat dissipation and heat exchanger heat dissipation, although they can meet the heat dissipation requirements to a certain extent, as the power consumption of equipment continues to increase, their heat dissipation efficiency gradually becomes inadequate. Fans and heat exchangers often run continuously at a fixed output power. When the temperature of the power cabinet is high, the heat dissipation effect is limited. When the heat dissipation demand of the power cabinet is low, continuous operation causes energy waste. In addition, the continuous operation of the heat dissipation equipment itself will also increase the current load of the busbar and generate unnecessary heat.

[0005] Therefore, it is necessary to propose a heat dissipation control system applied to a power cabinet to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problems existing in the background technology and propose a heat dissipation control system applied to a power cabinet;

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A heat dissipation control system applied to a power cabinet comprises a temperature acquisition module, a temperature analysis module, a heat dissipation condition analysis module and an execution module.

[0009] The temperature acquisition module collects temperature data, specifically:

[0010] At every preset time interval t, the temperature of each device component is recorded by the temperature sensors arranged in the power cabinet and the busbar, including the power cabinet housing temperature T1, the busbar room temperature T2, the cable room temperature T3, the terminal temperature T4, the fuse temperature T5, the relay temperature T6 and the instrument room temperature T7. The current time t and the acquired temperature data are recorded to generate the temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) of the power cabinet housing, busbar room, cable room, terminal, fuse, relay and instrument room.

[0011] As a preferred embodiment of the present invention, the temperature analysis module performs data analysis on the collected temperature data points, specifically:

[0012] Record the temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) obtained at the current time t. By formula Calculate the temperature characteristic value E1 at the current time t. Calculate the temperature characteristic value 2 at the current moment. Where i is the number of the temperature data point, i = 1, 2, 3, 4, 5, 6, 7. K1i and K2i are both a set of preset weight factors.

[0013] Record the current time t and the temperature characteristic value E1 at the current time to generate a first temperature characteristic data point (t, E1). Record the current time t and the temperature characteristic value E2 at the current time to generate a second temperature characteristic data point (t, E2).

[0014] Furthermore, a two-dimensional rectangular coordinate system is constructed with time t as the horizontal axis and temperature characteristic value 1 and temperature characteristic value 2 as the vertical axis, and the temperature characteristic value 1 and temperature characteristic value 2 generated at each moment are filled into their respective coordinate systems to generate a temperature characteristic value 1-time graph and a temperature characteristic value 2-time graph.

[0015] All first temperature characteristic data points (t, E1) are filled in the temperature characteristic value-time diagram, and a continuous and smooth curve is used to fit all first temperature characteristic data points.

[0016] All the second temperature characteristic data points (t, E2) are filled in the temperature characteristic value-time diagram, and a continuous and smooth curve is used to fit all the second temperature characteristic data points.

[0017] By formula Calculate the temperature characteristic change rate 1 E1′ and the temperature characteristic change rate 2 E2′.

[0018] The execution parameter 1 is calculated by the formula C1=λ1×E1+λ2×E1′, and the execution parameter 2 is calculated by the formula C2=λ3×E2+λ4×E2′. Wherein λ1, λ2, λ3 and λ4 are preset weight factors, and λ1, λ2, λ3 and λ4 are all natural numbers greater than 0.

[0019] As a preferred embodiment of the present invention, the heat dissipation condition analysis module obtains the surface area S0 and the ventilation opening area S1 of the outer side of the power cabinet, obtains the ambient temperature T0, and obtains the spacing L of the busbars.

[0020] By formula Calculate execution parameter three. Wherein μ1 is a preset linear impact factor, μ2 is a preset exponential impact factor, and both μ1 and μ2 are natural numbers greater than 0.

[0021] The execution module obtains execution parameter one, execution parameter two and execution parameter three.

[0022] As a preferred embodiment of the present invention, when the execution parameter 1 is greater than the preset maximum threshold C1max, the convection fans at the bottom and top of the power cabinet are turned on. On the contrary, when the execution parameter 1 is less than or equal to the preset minimum threshold C1min, the convection fans at the bottom and top of the power cabinet are turned off.

[0023] Further, the value of execution parameter 3 is obtained, and the relationship between the output power P of the convection fan and execution parameter 1 and execution parameter 3 is: P = α1×C1+α2×C3 ， α1 and α2 are preset weight factors, and both α1 and α2 are natural numbers greater than 0.

[0024] When the execution parameter 2 is greater than the preset threshold value C2max, a thermal balance operation is performed, specifically: obtaining the power cabinet shell temperature T1, busbar room temperature T2, cable room temperature T3, terminal temperature T4, fuse temperature T5, relay temperature T6, instrument room temperature T7 and temperature characteristic value 2 E2.

[0025] As a preferred embodiment of the present invention, a judgmental response is made to the specific value of the temperature characteristic value 2 E2, specifically: when the temperature characteristic value 2 is less than the preset threshold value 1 E2 (1), the equalization parameter 1 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 1 E2 (1) and less than the preset threshold value 2 E2 (2), the equalization parameter 2 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 2 E2 (2) and less than the preset threshold value 3 E2 (3), the equalization parameter 3 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 3 E2 (3), the equalization parameter 4 is output. The values ​​of the equalization parameters 1, 2, 3 and 4 are all preset positive integers less than or equal to 7, and the numerical relationship from large to small is: equalization parameter 4, equalization parameter 3, equalization parameter 2, and equalization parameter 1.

[0026] Further, the value m of the outputted balancing parameter is obtained. The power cabinet housing temperature T1, busbar room temperature T2, cable room temperature T3, terminal temperature T4, fuse temperature T5, relay temperature T6 and instrument room temperature T7 are arranged in order from high to low according to the numerical value. The first m temperature data in the order are extracted and marked as abnormal temperature.

[0027] The name of the device component corresponding to the abnormal temperature is obtained and marked as an abnormal component. A temperature balancing operation is performed on the abnormal component, specifically: the heat sink connected to the abnormal component is opened, the temperature of the abnormal component is transferred to the heat sink, and then the heat is dissipated to other device components through the large surface area of ​​the heat sink.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] (1) The present invention uses a temperature acquisition module, a temperature analysis module, and a heat dissipation condition analysis module to comprehensively analyze the factors affecting the heat dissipation of the power cabinet, such as busbar temperature, busbar spacing, and vent area, and makes data responses through an execution module, thereby improving the heat dissipation effect of the power cabinet;

[0030] (2) The present invention sets a negative feedback regulation mode, and performs switch control and power control on the heat dissipation device according to the numerical changes of execution parameters one, two and three. Compared with the traditional heat dissipation method, the heat dissipation device is turned off when the heat dissipation demand of the power cabinet is low, thereby reducing unnecessary current load. In addition, from the perspective of real-time temperature and temperature regulation expectations, the present invention sets two quantitative parameters: temperature characteristic value and temperature characteristic change rate. This achieves efficient execution of temperature precision control operations and improves the control accuracy of temperature changes in the power cabinet;

[0031] (3) The heat dissipation effect of the power cabinet is often affected by the external environment. For example, in a high temperature environment, the temperature inside the power cabinet will rise rapidly, making heat dissipation more difficult. The present invention uses a heat dissipation condition analysis module to sense the environment and heat dissipation conditions, thereby affecting the output power of the heat dissipation device; in addition, the execution module of the present invention not only performs power control on the overall heat dissipation device such as the circulation fan, but also analyzes and controls the internal thermal balance. When the local temperature in the equipment is too high, the heat sink is opened for local heat dissipation, and the local high temperature of the equipment components is transmitted to the power cabinet as a whole. Then, when the overall temperature is too high, the circulation fan is used to dissipate the heat as a whole, thereby improving the intelligence level of the power cabinet heat dissipation control technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0033] Figure 1 It is a system block diagram of the present invention. DETAILED DESCRIPTION

[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1 As shown, the heat dissipation control system applied to the power cabinet includes a temperature acquisition module, a temperature analysis module, a heat dissipation condition analysis module and an execution module.

[0036] The temperature acquisition module collects temperature data, specifically:

[0037] At every preset time interval t, the temperature of each device component is recorded by the temperature sensors arranged in the power cabinet and the busbar, including the power cabinet housing temperature T1, the busbar room temperature T2, the cable room temperature T3, the terminal temperature T4, the fuse temperature T5, the relay temperature T6 and the instrument room temperature T7. The current time t and the acquired temperature data are recorded to generate the temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) of the power cabinet housing, busbar room, cable room, terminal, fuse, relay and instrument room.

[0038] The temperature analysis module performs data analysis on the collected temperature data points, specifically:

[0039] Record the temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) obtained at the current time t. By formula Calculate the temperature characteristic value E1 at the current time t. Calculate the temperature characteristic value 2 at the current moment. Where i is the number of the temperature data point, i = 1, 2, 3, 4, 5, 6, 7. K1i and K2i are both a set of preset weight factors.

[0040] It should be noted that the temperature characteristic value 1 reflects the overall temperature condition of each component inside the power cabinet, and the temperature characteristic value 2 reflects the uniformity of temperature distribution inside the power cabinet, and indirectly reflects the state and efficiency of air flow and heat exchange inside the power cabinet.

[0041] Record the current time t and the temperature characteristic value E1 at the current time to generate a first temperature characteristic data point (t, E1). Record the current time t and the temperature characteristic value E2 at the current time to generate a second temperature characteristic data point (t, E2).

[0042] Furthermore, a two-dimensional rectangular coordinate system is constructed with time t as the horizontal axis and temperature characteristic value 1 and temperature characteristic value 2 as the vertical axis, and the temperature characteristic value 1 and temperature characteristic value 2 generated at each moment are filled into their respective coordinate systems to generate a temperature characteristic value 1-time graph and a temperature characteristic value 2-time graph.

[0043] All first temperature characteristic data points (t, E1) are filled in the temperature characteristic value-time diagram, and a continuous and smooth curve is used to fit all first temperature characteristic data points.

[0044] All the second temperature characteristic data points (t, E2) are filled in the temperature characteristic value-time diagram, and a continuous and smooth curve is used to fit all the second temperature characteristic data points.

[0045] By formula Calculate the temperature characteristic change rate 1 E1′ and the temperature characteristic change rate 2 E2′.

[0046] It should be noted that the characteristic change rate 1 and the temperature characteristic change rate 2 respectively reflect the speed of the temperature change of the power cabinet and the speed of change of the uniformity of the temperature distribution of the power cabinet. When the value of the characteristic change rate 1 is positive, it means that the temperature of the power cabinet is rising; when the value of the characteristic change rate 2 is positive, it means that the temperature of the power cabinet is tending to be uneven. Conversely, when the value of the characteristic change rate 1 is negative, it means that the temperature of the power cabinet is decreasing; when the value of the characteristic change rate 2 is negative, it means that the temperature of the power cabinet is tending to be uniform.

[0047] The execution parameter 1 is calculated by the formula C1=λ1×E1+λ2×E1′, and the execution parameter 2 is calculated by the formula C2=λ3×E2+λ4×E2′. Wherein λ1, λ2, λ3 and λ4 are preset weight factors, and λ1, λ2, λ3 and λ4 are all natural numbers greater than 0.

[0048] It should be noted that execution parameter 1 reflects the need for heat dissipation equipment, and execution parameter 2 reflects the need for temperature balancing equipment. The preset weight factor is intended to balance the impact of each temperature characteristic value and each characteristic change rate on the calculation result.

[0049] For example, there is a power cabinet running in a cold environment. During operation, a large amount of heat is generated, and the overall temperature is relatively high. However, under the operation of the cooling fan, the inside of the power cabinet and the cold environment quickly exchange heat, and the overall temperature of the power cabinet drops rapidly, and the subsequent demand for the cooling fan will gradually decrease. This is reflected in the numerical value. At this time, the value of the temperature characteristic value one is relatively high, but the value of the characteristic change rate one is negative and relatively high. As time goes by, the value of the temperature characteristic value one gradually decreases, and the value of the characteristic change rate one gradually approaches 0. After the numerical balance of the preset weight factors λ1 and λ2, the initial value of the execution parameter one is positive, and the value gradually decreases over time.

[0050] The heat dissipation condition analysis module obtains the surface area S0 and the ventilation opening area S1 of the outer side of the power cabinet, obtains the ambient temperature T0, and obtains the spacing L of the busbars.

[0051] By formula Calculate execution parameter three. Wherein μ1 is a preset linear impact factor, μ2 is a preset exponential impact factor, and both μ1 and μ2 are natural numbers greater than 0.

[0052] It should be noted that the execution parameter three reflects the heat dissipation environment and heat dissipation conditions of the power cabinet. The larger the value of the execution parameter three is, the more favorable the environment and conditions are for the heat dissipation of the power cabinet.

[0053] The execution module obtains execution parameter one, execution parameter two and execution parameter three.

[0054] When the execution parameter 1 is greater than the preset maximum threshold value C1max, the convection fans at the bottom and top of the power cabinet are turned on. On the contrary, when the execution parameter 1 is less than or equal to the preset minimum threshold value C1min, the convection fans at the bottom and top of the power cabinet are turned off.

[0055] Further, the value of execution parameter 3 is obtained, and the relationship between the output power P of the convection fan and execution parameter 1 and execution parameter 3 is: P = α1×C1+α2×C3 ， α1 and α2 are preset weight factors, and both α1 and α2 are natural numbers greater than 0.

[0056] When the execution parameter 2 is greater than the preset threshold value C2max, a thermal balance operation is performed, specifically: obtaining the power cabinet shell temperature T1, busbar room temperature T2, cable room temperature T3, terminal temperature T4, fuse temperature T5, relay temperature T6, instrument room temperature T7 and temperature characteristic value 2 E2.

[0057] A judgment response is made for the specific value of the temperature characteristic value 2 E2, specifically: when the temperature characteristic value 2 is less than the preset threshold value 1 E2(1), the equalization parameter 1 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 1 E2(1) and less than the preset threshold value 2 E2(2), the equalization parameter 2 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 2 E2(2) and less than the preset threshold value 3 E2(3), the equalization parameter 3 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 3 E2(3), the equalization parameter 4 is output. The values ​​of the equalization parameters 1, 2, 3 and 4 are all preset positive integers less than or equal to 7, and the numerical relationship from large to small is: equalization parameter 4, equalization parameter 3, equalization parameter 2, and equalization parameter 1.

[0058] Further, the value m of the outputted balancing parameter is obtained. The power cabinet housing temperature T1, busbar room temperature T2, cable room temperature T3, terminal temperature T4, fuse temperature T5, relay temperature T6 and instrument room temperature T7 are arranged in order from high to low according to the numerical value. The first m temperature data in the order are extracted and marked as abnormal temperature.

[0059] The name of the device component corresponding to the abnormal temperature is obtained and marked as an abnormal component. A temperature balancing operation is performed on the abnormal component, specifically: the heat sink connected to the abnormal component is opened, the temperature of the abnormal component is transferred to the heat sink, and then the heat is dissipated to other device components through the large surface area of ​​the heat sink.

[0060] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0061] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and the claims, the singular forms "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and the claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations;

[0062] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A heat dissipation control system applied to a power cabinet, comprising a temperature analysis module and an execution module, characterized in that: The temperature analysis module performs data analysis on the collected temperature data points, and obtains temperature characteristic value 1 and temperature characteristic value 2 through calculation; performs visualization operation on the temperature characteristic values ​​1 and 2, and generates temperature characteristic value 1-time graph and temperature characteristic value 2-time graph; performs data extraction to generate temperature characteristic change rate 1 and temperature characteristic change rate 2; obtains execution parameter 1 and execution parameter 2 through calculation on temperature characteristic value 1, temperature characteristic value 2, temperature characteristic change rate 1 and temperature characteristic change rate 2; The execution module performs numerical analysis based on execution parameter one and execution parameter three to control the switch and output power of the ventilation fan; performs numerical analysis on execution parameter two and the power cabinet casing temperature, busbar room temperature, cable room temperature, terminal block temperature, fuse temperature, relay temperature, instrument room temperature and temperature characteristic value two; and performs thermal balancing operations based on the numerical analysis results.

2. The heat dissipation control system applied to the power cabinet according to claim 1 is characterized in that: Also includes: Temperature acquisition module and heat dissipation condition analysis module: The temperature acquisition module collects temperature data. At preset time intervals t, the temperature of each device component is recorded through temperature sensors arranged in the power cabinet and busbar, including the power cabinet housing temperature T1, busbar room temperature T2, cable room temperature T3, terminal temperature T4, fuse temperature T5, relay temperature T6 and instrument room temperature T7; the current time t and the acquired temperature data are recorded to generate temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) of the power cabinet housing, busbar room, cable room, terminal, fuse, relay and instrument room; The heat dissipation condition analysis module obtains the surface area S0 and the ventilation area S1 of the outer side of the power cabinet, the ambient temperature T0, and the busbar spacing L; through the formula Calculate execution parameter three; where μ1 is a preset linear impact factor, and μ2 is a preset exponential impact factor.

3. The heat dissipation control system applied to the power cabinet according to claim 2 is characterized in that: The specific process of obtaining temperature characteristic value 1 and temperature characteristic value 2 through calculation is: Record the temperature data points (t, T1), (t, T2), (t, T3), (t, T4), (t, T5), (t, T6) and (t, T7) obtained at the current time t; through the formula Calculate the temperature characteristic value E1 at the current time t; by formula Calculate the temperature characteristic value 2 at the current moment; Where i is the number of the temperature data point, i = 1, 2, 3, 4, 5, 6, 7; K1i and K2i are both a set of preset weighting factors.

4. The heat dissipation control system applied to the power cabinet according to claim 3 is characterized in that: The process of visualizing the temperature characteristic values ​​1 and 2 and obtaining the characteristic change rate 1′ and the temperature characteristic change rate 2 by numerical calculation is as follows: Record the current time t and the temperature characteristic value E1 at the current time to generate a first temperature characteristic data point (t, E1); record the current time t and the temperature characteristic value E2 at the current time to generate a second temperature characteristic data point (t, E2); A two-dimensional rectangular coordinate system is constructed with time t as the horizontal axis and temperature characteristic value 1 and temperature characteristic value 2 as the vertical axis, and the temperature characteristic value 1 and temperature characteristic value 2 generated at each moment are filled into the respective coordinate systems to generate a temperature characteristic value 1-time graph and a temperature characteristic value 2-time graph; Filling all first temperature characteristic data points (t, E1) in the temperature characteristic value-time diagram, and fitting all first temperature characteristic data points with a continuous and smooth curve; Filling all the second temperature characteristic data points (t, E2) in the temperature characteristic value-time diagram, and fitting all the second temperature characteristic data points with a continuous and smooth curve; By formula Calculate the temperature characteristic change rate 1 E1′ and the temperature characteristic change rate 2 E2′.

5. The heat dissipation control system applied to the power cabinet according to claim 4, characterized in that: The specific process of obtaining execution parameter 1 and execution parameter 2 by calculating temperature characteristic value 1, temperature characteristic value 2, temperature characteristic change rate 1 and temperature characteristic change rate 2 is as follows: The execution parameter one is calculated by the formula C1=λ1×E1+λ2×E1′, and the execution parameter two is calculated by the formula C2=λ3×E2+λ4×E2′; wherein λ1, λ2, λ3 and λ4 are preset weight factors.

6. The heat dissipation control system applied to a power cabinet according to claim 5, characterized in that: The execution module performs numerical analysis based on execution parameters 1 and 3, and the specific process of controlling the switch and output power of the ventilation fan is as follows: When the execution parameter 1 is greater than the preset maximum threshold value C1max, the convection fans at the bottom and top of the power cabinet are turned on; on the contrary, when the execution parameter 1 is less than or equal to the preset minimum threshold value C1min, the convection fans at the bottom and top of the power cabinet are turned off; Get the value of execution parameter 3, and let the relationship between the output power P of the convection fan and execution parameters 1 and 3 be: P = α1 × C1 + α2 × C3 ， Where α1 and α2 are preset weight factors.

7. The heat dissipation control system applied to a power cabinet according to claim 6, characterized in that: The specific process of numerical analysis of execution parameter 2 and power cabinet shell temperature, busbar room temperature, cable room temperature, terminal block temperature, fuse temperature, relay temperature, instrument room temperature and temperature characteristic value 2 is as follows: When the execution parameter 2 is greater than the preset threshold value C2max, a thermal balance operation is performed. When the temperature characteristic value 2 is less than the preset threshold value 1 E2(1), the balance parameter 1 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 1 E2(1) and less than the preset threshold value 2 E2(2), the balance parameter 2 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 2 E2(2) and less than the preset threshold value 3 E2(3), the balance parameter 3 is output; when the temperature characteristic value 2 is greater than or equal to the preset threshold value 3 E2(3), the balance parameter 4 is output; The values ​​of the equalization parameters one, two, three and four are all preset positive integers less than or equal to 7, and the numerical relationship from large to small is: equalization parameter four, equalization parameter three, equalization parameter two, equalization parameter one.

8. The heat dissipation control system applied to a power cabinet according to claim 7, characterized in that: The specific process of performing thermal equilibrium operation according to the numerical analysis results is: Obtain the value m of the outputted balancing parameter; arrange the power cabinet housing temperature T1, busbar room temperature T2, cable room temperature T3, terminal block temperature T4, fuse temperature T5, relay temperature T6 and instrument room temperature T7 in descending order according to the value; extract the first m temperature data in the order arrangement and mark them as abnormal temperatures; The name of the device component corresponding to the abnormal temperature is obtained and marked as an abnormal component; a temperature balancing operation is performed on the abnormal component, specifically: a heat sink connected to the abnormal component is opened, the temperature of the abnormal component is transferred to the heat sink, and then the heat is dissipated to other device components through the large surface area of ​​the heat sink.

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