Dry-type transformer three-dimensional heat dissipation air duct structure and heat dissipation system

Abstract

The application provides a dry-type transformer three-dimensional heat dissipation air duct structure and heat dissipation system, and relates to the technical field of dry-type transformers, comprising: a protective shell for protecting the dry-type transformer; an insulating partition plate arranged in the protective shell and dividing the protective shell into an air inlet cavity and an air outlet cavity; a plurality of heat conduction pipes arranged on the insulating partition plate; and a refrigeration and heat dissipation assembly in communication with the heat conduction pipes and used for accurately inputting air cooled by the refrigeration and heat dissipation assembly to the coil of the dry-type transformer. The air cooled by the refrigeration and heat dissipation assembly can be accurately guided to the coil through the plurality of heat conduction pipes coaxial with the coil and corresponding to the coil, so that the heat dissipation is improved in pertinence and efficiency. The refrigeration and heat dissipation assembly directly delivers cold air to the coil of the heat generation core, greatly enhances the heat dissipation effect, and the overall structure is reasonably designed. The cooperation of various components can significantly improve the heat dissipation performance of the dry-type transformer.

Description

Technical Field

[0001] This invention belongs to the field of dry-type transformer technology, specifically relating to a three-dimensional heat dissipation duct structure and heat dissipation system for dry-type transformers. Background Technology

[0002] As a key piece of equipment in the power system, the operating temperature of dry-type transformers directly affects their insulation performance and service life. Therefore, efficient heat dissipation is the core requirement to ensure their stable operation. Traditional dry-type transformers mostly use natural air cooling or simple forced air cooling, which only uses external heat sinks or fans to cool the overall temperature. This results in low heat dissipation efficiency and insufficient targeting.

[0003] In existing technologies, heat dissipation ducts are mostly designed in a planar or unidirectional manner, making it difficult for cold air to accurately reach the coil area where heat is most concentrated. This results in uneven temperature distribution of components such as coils and cores, leading to frequent local overheating. In addition, traditional heat dissipation systems are mostly passively responsive, meaning that heat dissipation is only activated when the temperature reaches a threshold. They lack the ability to predict temperature change trends and cannot avoid overheating risks in advance. Furthermore, differences in thermal field distribution cannot be identified and dynamically adjusted in real time, further reducing heat dissipation efficiency. At the same time, the fault monitoring and emergency handling mechanisms for heat dissipation components are imperfect. Once problems such as duct blockage or airflow leakage occur, heat dissipation failure can easily occur, threatening the safe operation of the transformer. Summary of the Invention

[0004] This invention provides a three-dimensional heat dissipation duct structure and heat dissipation system for dry-type transformers, in order to solve at least one of the technical problems mentioned above.

[0005] To solve the above-mentioned technical problems, this invention discloses a three-dimensional heat dissipation duct structure and heat dissipation system for dry-type transformers, comprising:

[0006] The protective enclosure is used to protect the dry-type transformer.

[0007] An insulating partition is installed inside the protective housing, dividing the protective housing into an air intake chamber and an exhaust chamber;

[0008] Several heat conduction pipes are installed on the insulating partition, coaxial with the dry-type transformer and the coil and corresponding one-to-one. The dry-type transformer is located inside the heat conduction pipes.

[0009] The cooling and heat dissipation component is connected to the heat conduction pipe and is used to cool the outside air and then accurately input it to the coil of the dry-type transformer.

[0010] Preferably, the dry-type transformer includes a coil, a core, and a mounting frame. The mounting frame includes a bottom mounting plate, an upper clamping frame, and a middle telescopic column. The middle telescopic column is installed between the bottom mounting plate and the upper clamping frame to adjust the distance between the bottom mounting plate and the upper clamping frame to accommodate dry-type transformers of different specifications.

[0011] Preferably, the cooling and heat dissipation component includes:

[0012] The intake assembly and the exhaust assembly are respectively located inside the intake chamber and the output end of the intake assembly is connected to the heat conduction pipe. The exhaust assembly is located on the protective housing and is used to exhaust the hot air in the exhaust chamber.

[0013] Preferably, the intake assembly includes:

[0014] Several gas collection boxes are connected to each other through an air inlet pipe. An intermediate gas delivery pipe is provided at the outlet end of the gas collection box. A one-way valve is provided inside the intermediate gas delivery pipe. The output end of the intermediate gas delivery pipe is connected to the gas delivery pipe in the heat conduction pipe through a connecting through hole on the insulating partition. Several nozzles are provided on the gas delivery pipe.

[0015] The cooling components are located outside the intake pipe.

[0016] Preferably, the exhaust assembly includes exhaust ports, which are opened on the protective housing and correspond one-to-one with the coils of the dry-type transformer. Each exhaust port is equipped with an exhaust pump.

[0017] A three-dimensional heat dissipation duct structure heat dissipation system for dry-type transformers includes:

[0018] The heat dissipation prediction and control module is used to predict the future temperature development trend of the dry-type transformer and control the cooling and heat dissipation components to perform heat dissipation operations.

[0019] The dynamic thermal field balancing module is connected to the heat dissipation prediction and control module to identify differences in the thermal field distribution inside the transformer and generate local compensation commands.

[0020] A multi-level heat dissipation strategy module dynamically adjusts the working mode of the cooling and heat dissipation components based on the rate of temperature change.

[0021] The fault diagnosis and linkage module monitors the operating status of the heat dissipation components in real time and triggers emergency heat dissipation strategies.

[0022] Preferably, the heat dissipation prediction control module includes:

[0023] The temperature acquisition unit includes several temperature sensors installed on the dry-type transformer, and the temperature sensors are evenly arranged along the axial direction of the dry-type transformer.

[0024] The matrix construction unit is used to construct a dry-type transformer temperature rise prediction matrix based on the acquisition results of the temperature acquisition unit.

[0025] The control unit is used to calculate the predicted temperature value for the next acquisition cycle based on the dry-type transformer temperature rise prediction matrix, and compare it with the preset heat dissipation trigger temperature value. If the predicted temperature value exceeds the heat dissipation trigger temperature value, the cooling heat dissipation component is activated; otherwise, it is not activated.

[0026] Preferably, the matrix building unit includes:

[0027] The sorting subunit arranges all the temperature values ​​of the dry-type transformers collected by each temperature sensor in chronological order to form sequence one;

[0028] The difference acquisition unit calculates the difference between the arranged dry-type transformer temperature values ​​and the corresponding dry-type transformer temperature values ​​to its left and right, respectively, to obtain the left difference value and right difference value corresponding to each dry-type transformer temperature value. The left difference value of the first dry-type transformer temperature value is set to the same value as its right difference value, and the right difference value of the last dry-type transformer temperature value is set to the same value as its left difference value. The left difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence two. The right difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence three.

[0029] The matrix is ​​constructed by using sequence one, sequence two, and sequence three as the first, second, and third rows of the dry-type transformer temperature rise prediction matrix, respectively.

[0030] ;in, Let be the temperature rise prediction matrix for the dry-type transformer in the region corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence one corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the temperature value of the nth dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence two corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence two corresponding to the i-th temperature sensor. This represents the temperature value of the nth dry-type transformer in sequence two corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence three corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence three corresponding to the i-th temperature sensor. Let be the temperature value of the nth dry-type transformer in sequence 3 corresponding to the i-th temperature sensor;

[0031] The prediction subunit obtains the detection value of each temperature sensor in the next acquisition cycle based on the dry transformer temperature rise prediction matrix of the corresponding area of ​​each temperature sensor, and calculates the average value of the detection value of each temperature sensor in the next acquisition cycle as the predicted dry transformer temperature value inside the motor in the next acquisition cycle.

[0032] Based on the dry-type transformer temperature rise prediction matrix corresponding to each temperature sensor region, the detection values ​​for the next acquisition cycle of each temperature sensor are obtained, including:

[0033] The mean value of all matrix elements in the third row of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is obtained, and the value of the last column of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is set to the value equal to the mean value of all matrix elements in the third row, thereby obtaining a new matrix. The product of the rank of the new matrix and the dry transformer temperature value of the previous detection cycle is used as the detection value of each temperature sensor in the next acquisition cycle.

[0034] The predicted temperature value acquisition unit uses the average value of the detection values ​​of several temperature sensors in the next acquisition cycle as the predicted temperature value of the transformer.

[0035] Preferably, the dynamic thermal field balancing module includes:

[0036] The gradient analysis unit is used to calculate the difference between the values ​​collected by adjacent temperature sensors to generate the thermal field gradient matrix;

[0037] The flow control unit is used to control the injection angle and air flow rate of the nozzles in the heat conduction pipe based on the thermal field gradient matrix.

[0038] The adaptive pressure regulating unit changes the negative pressure intensity of the exhaust chamber by adjusting the power of the exhaust pump, guiding the airflow to gather in the high-temperature area.

[0039] Preferably, the fault diagnosis linkage module includes:

[0040] Dual-channel monitoring unit compares the data deviations between the intake manifold flow sensor and the exhaust port pressure sensor in real time;

[0041] The fault tree analysis unit locates the blockage or leak location based on the fault tree model when the data deviation between the intake manifold flow sensor and the exhaust port pressure sensor exceeds the limit.

[0042] The emergency diversion path activates redundant ventilation valves on the insulating partition to divert airflow when a local duct failure is detected.

[0043] Compared with the prior art, the present invention has the following beneficial effects:

[0044] This invention effectively protects dry-type transformers through a protective shell, preventing external environmental influences. The air inlet and outlet chambers, separated by an insulating partition, form independent airflow channels, reducing the mixing of hot and cold air. Several heat-conducting pipes, coaxial with and corresponding to the coils, ensure that cooled air is precisely guided to the coils, improving the targeting and efficiency of heat dissipation. The cooling and heat dissipation components directly deliver cold air to the coils at the core of heat generation, significantly enhancing the heat dissipation effect. The overall structure is rationally designed, and the synergistic effect of each component can significantly improve the heat dissipation performance of the dry-type transformer. Attached Figure Description

[0045] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0046] Fig. 1 This is a schematic diagram of the overall structure of the three-dimensional heat dissipation duct structure for the dry-type transformer of the present invention;

[0047] Fig. 2 This is a schematic diagram of the cooling and heat dissipation component structure of the present invention.

[0048] In the diagram: 1. Protective housing; 10. Air inlet chamber; 11. Exhaust chamber; 2. Insulating partition; 3. Dry-type transformer; 30. Coil; 31. Iron core; 32. Mounting bracket; 33. Bottom mounting plate; 34. Upper clamping frame; 35. Intermediate telescopic column; 4. Heat conduction pipe; 5. Refrigeration and heat dissipation assembly; 50. Gas collection box; 51. Air inlet pipe; 52. Intermediate gas delivery pipe; 53. Nozzle; 54. Exhaust pump; 55. Refrigeration assembly; 56. Exhaust port. Detailed Implementation

[0049] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0050] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0051] The present invention provides the following embodiments.

[0052] Example 1

[0053] This invention provides a three-dimensional heat dissipation duct structure and heat dissipation system for dry-type transformers, such as... Figs. 1-2 As shown, it includes:

[0054] The protective housing 1 houses the dry-type transformer 3, which is used to protect the dry-type transformer 3.

[0055] An insulating partition 2 is disposed inside the protective housing 1, dividing the protective housing 1 into an air inlet chamber 10 and an exhaust chamber 11.

[0056] Several heat conduction pipes 4 are set on the insulating partition 2, and are coaxial with the dry transformer 3 and the coil 30 and correspond one-to-one. The dry transformer 3 is located inside the heat conduction pipes 4.

[0057] The cooling and heat dissipation component 5 is connected to the heat conduction pipe 4 and is used to cool the outside air and then accurately input it to the coil 30 of the dry-type transformer 3.

[0058] The working principle and beneficial effects of the above technical solution are as follows: the protective shell 1 protects the dry-type transformer 3, the insulating partition 2 divides the protective shell 1 into an air inlet chamber 10 and an exhaust chamber 11, a number of heat conduction pipes 4 are set on the insulating partition 2 and are coaxial with the dry-type transformer 3 and the coil 30 and correspond one-to-one, the dry-type transformer 3 is located inside the heat conduction pipes 4, the cooling and heat dissipation component 5 is connected to the heat conduction pipes 4, and after cooling the outside air, it is accurately input to the coil 30 of the dry-type transformer 3, forming an airflow path from air intake to cooling and then to precise heat dissipation;

[0059] This invention effectively protects the dry-type transformer 3 through the protective shell 1, avoiding the influence of the external environment. The air inlet chamber 10 and exhaust chamber 11 divided by the insulating partition 2 can form independent airflow channels, reducing the mixing of hot and cold air. Several heat conduction pipes 4 that are coaxial with the coil 30 and correspond one-to-one can ensure that the cooled air is accurately guided to the coil 30, improving the targeting and efficiency of heat dissipation. The cooling and heat dissipation component 5 directly delivers cold air to the core heat-generating coil 30, greatly enhancing the heat dissipation effect. The overall structure is reasonably designed, and the synergistic effect of each component can significantly improve the heat dissipation performance of the dry-type transformer 3.

[0060] Example 2

[0061] Based on Embodiment 1, the dry-type transformer 3 includes a coil 30, an iron core 31, and a mounting frame 32. The mounting frame 32 includes a bottom mounting plate 33, an upper clamping frame 34, and a middle telescopic column 35. The middle telescopic column 35 is installed between the bottom mounting plate 33 and the upper clamping frame 34 to adjust the distance between the bottom mounting plate 33 and the upper clamping frame 34 to accommodate dry-type transformers 3 of different specifications.

[0062] The working principle and beneficial effects of the above technical solution are as follows: The dry-type transformer 3 includes a coil 30, an iron core 31 and a mounting frame 32. The bottom mounting plate 33 and the upper clamping frame 34 of the mounting frame 32 are connected by a middle telescopic column 35. The middle telescopic column 35 can adjust the distance between the bottom mounting plate 33 and the upper clamping frame 34, thereby adapting to the installation and fixing requirements of dry-type transformers 3 of different specifications.

[0063] The intermediate telescopic column 35 of the mounting bracket 32 ​​can flexibly adjust the spacing, so that the structure can be adapted to various specifications of dry-type transformers 3, improving the versatility and applicability of the structure. There is no need to design a separate installation structure for transformers of different specifications, which reduces design and manufacturing costs. At the same time, the cooperation between the bottom mounting plate 33 and the upper clamping frame 34 can firmly fix the transformer, ensuring its stability during operation and reducing the risk of failure caused by unstable installation.

[0064] Example 3

[0065] Based on Embodiment 1, the cooling and heat dissipation assembly 5 includes:

[0066] The intake assembly and the exhaust assembly are provided. The intake assembly is located in the intake chamber 10 and its output end is connected to the heat conduction pipe 4. The exhaust assembly is located on the protective housing 1 and is used to discharge the hot air in the exhaust chamber 11.

[0067] The intake components include:

[0068] Several gas collection boxes 50 are connected to each other through an air inlet pipe 51. An intermediate gas delivery pipe 52 is provided at the outlet end of the gas collection box 50. A one-way valve is provided in the intermediate gas delivery pipe 52. The output end of the intermediate gas delivery pipe 52 is connected to the gas delivery pipe in the heat conduction pipe 4 through the connecting through hole on the insulating partition 2. Several nozzles 53 are provided on the gas delivery pipe.

[0069] The cooling component 55 is located outside the intake pipe 51;

[0070] The exhaust assembly includes an exhaust port 56, which is located on the protective housing 1 and corresponds one-to-one with the coil 30 of the dry-type transformer 3. An exhaust pump 54 is provided at each exhaust port 56.

[0071] The working principle and beneficial effects of the above technical solution are as follows: the air intake component of the cooling and heat dissipation component 5 is set in the air intake chamber 10, the adjacent air collection boxes 50 are connected through the air intake pipe 51, the middle air supply pipe 52 at the outlet end of the air collection box 50 is equipped with a one-way valve and is connected to the air guide pipe in the heat conduction pipe 4 through the connecting through hole on the insulating partition 2, the nozzle 53 on the air guide pipe can spray out the gas, the cooling component 55 outside the air intake pipe 51 cools the air, the exhaust port 56 of the exhaust component corresponds one-to-one with the coil 30 and each exhaust port 56 is equipped with an exhaust pump 54, which can discharge the hot air in the exhaust chamber 11;

[0072] In the air intake assembly, adjacent air collection boxes 50 are connected through air intake pipes 51, enabling centralized collection and transportation of gas. The one-way valve in the intermediate air supply pipe 52 prevents backflow of gas and ensures the stability of airflow direction. The cooling assembly 55 is located outside the air intake pipe 51 and can pre-cool the incoming air to improve heat dissipation. The nozzles 53 on the air guide pipe can accurately spray cold air to the coil 30, enhancing local heat dissipation capacity. The exhaust port 56 of the exhaust assembly corresponds one-to-one with the coil 30 and is equipped with an exhaust pump 54, which can quickly exhaust the hot air generated by the corresponding coil 30, forming an efficient airflow circulation and further improving heat dissipation efficiency. The overall structure makes the heat dissipation process more targeted and efficient.

[0073] Example 4

[0074] Based on any one of Embodiments 1-3, a three-dimensional heat dissipation duct structure heat dissipation system for dry-type transformers includes:

[0075] The heat dissipation prediction and control module is used to predict the future temperature development trend of the dry-type transformer and control the cooling and heat dissipation component 5 to perform heat dissipation operation.

[0076] The dynamic thermal field balancing module is connected to the heat dissipation prediction and control module to identify differences in the thermal field distribution inside the transformer and generate local compensation commands.

[0077] A multi-level heat dissipation strategy module dynamically adjusts the working mode of the cooling and heat dissipation component 5 based on the rate of temperature change.

[0078] The fault diagnosis and linkage module monitors the operating status of the heat dissipation components in real time and triggers emergency heat dissipation strategies.

[0079] The working principle and beneficial effects of the above technical solution are as follows: The heat dissipation prediction and control module predicts the future temperature development trend of the dry-type transformer 3 and controls the cooling and heat dissipation component 5 to perform heat dissipation operation. The thermal field dynamic balancing module is connected to the heat dissipation prediction and control module to identify the differences in the thermal field distribution inside the transformer and generate local compensation instructions. The multi-level heat dissipation strategy module dynamically adjusts the working mode of the cooling and heat dissipation component 5 based on the temperature change rate. The fault diagnosis linkage module monitors the operating status of the heat dissipation component in real time and triggers the emergency heat dissipation strategy. All modules work together to achieve comprehensive heat dissipation control of the dry-type transformer 3.

[0080] The heat dissipation prediction and control module can predict temperature trends in advance, achieve active heat dissipation, and avoid transformer overheating. The thermal field dynamic balancing module can identify differences in thermal field distribution and perform local compensation to ensure uniform temperature distribution inside the transformer and improve the overall heat dissipation effect. The multi-level heat dissipation strategy module adjusts the working mode of the cooling and heat dissipation component 5 according to the rate of temperature change, which can save energy while ensuring heat dissipation effect. The fault diagnosis linkage module monitors in real time and triggers emergency strategies, improving the reliability and safety of the heat dissipation system. The collaborative work of multiple modules makes the heat dissipation system more intelligent, efficient, and stable.

[0081] Example 5

[0082] Based on Example 4, the heat dissipation prediction and control module includes:

[0083] The temperature acquisition unit includes several temperature sensors installed on the dry-type transformer 3, and the temperature sensors are evenly arranged along the axial direction of the dry-type transformer 3.

[0084] The matrix construction unit is used to construct a dry-type transformer temperature rise prediction matrix based on the acquisition results of the temperature acquisition unit.

[0085] The control unit is used to calculate the predicted temperature value for the next acquisition cycle based on the dry-type transformer temperature rise prediction matrix and compare it with the preset heat dissipation trigger temperature value. If the predicted temperature value exceeds the heat dissipation trigger temperature value, the cooling heat dissipation component 5 is activated; otherwise, it is not activated.

[0086] Matrix building units include:

[0087] The sorting subunit arranges all the temperature values ​​of the dry-type transformers collected by each temperature sensor in chronological order to form sequence one;

[0088] The difference acquisition unit calculates the difference between the arranged dry-type transformer temperature values ​​and the corresponding dry-type transformer temperature values ​​to its left and right, respectively, to obtain the left difference value and right difference value corresponding to each dry-type transformer temperature value. The left difference value of the first dry-type transformer temperature value is set to the same value as its right difference value, and the right difference value of the last dry-type transformer temperature value is set to the same value as its left difference value. The left difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence two. The right difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence three.

[0089] The matrix is ​​constructed by using sequence one, sequence two, and sequence three as the first, second, and third rows of the dry-type transformer temperature rise prediction matrix, respectively.

[0090] ;in, Let be the temperature rise prediction matrix for the dry-type transformer in the region corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence one corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the temperature value of the nth dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence two corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence two corresponding to the i-th temperature sensor. This represents the temperature value of the nth dry-type transformer in sequence two corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence three corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence three corresponding to the i-th temperature sensor. Let be the temperature value of the nth dry-type transformer in sequence 3 corresponding to the i-th temperature sensor;

[0091] The prediction subunit obtains the detection value of each temperature sensor in the next acquisition cycle based on the dry transformer temperature rise prediction matrix of the corresponding area of ​​each temperature sensor, and calculates the average value of the detection value of each temperature sensor in the next acquisition cycle as the predicted dry transformer temperature value inside the motor in the next acquisition cycle.

[0092] Based on the dry-type transformer temperature rise prediction matrix corresponding to each temperature sensor region, the detection values ​​for the next acquisition cycle of each temperature sensor are obtained, including:

[0093] The mean value of all matrix elements in the third row of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is obtained, and the value of the last column of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is set to the value equal to the mean value of all matrix elements in the third row, thereby obtaining a new matrix. The product of the rank of the new matrix and the dry transformer temperature value of the previous detection cycle is used as the detection value of each temperature sensor in the next acquisition cycle.

[0094] The predicted temperature value acquisition unit uses the average value of the detection values ​​of several temperature sensors in the next acquisition cycle as the predicted temperature value of the transformer.

[0095] The working principle and beneficial effects of the above technical solution are as follows: The temperature acquisition unit of the heat dissipation prediction control module acquires temperature through temperature sensors uniformly arranged along the axis of the dry-type transformer 3. The sorting subunit of the matrix construction unit arranges the temperature values ​​of each sensor in time sequence to form a sequence one. The difference acquisition unit calculates the left difference and the right difference to form sequences two and three. The matrix construction subunit constructs the three sequences into a temperature rise prediction matrix. The prediction subunit obtains the detection value of the next acquisition cycle based on the matrix. The predicted temperature value acquisition unit takes the average value as the predicted temperature value. The control unit compares the predicted temperature value with the trigger value to determine whether to start the cooling and heat dissipation component 5.

[0096] Temperature sensors are evenly arranged along the axis of the dry-type transformer 3, which can comprehensively collect temperature data from all parts of the transformer, ensuring the comprehensiveness and accuracy of the data. The matrix construction unit constructs a prediction matrix through time sequence arrangement and difference calculation, which can make full use of historical temperature data and changing trends to improve the accuracy of temperature prediction. The prediction subunit obtains the detection value based on the matrix and takes the average value to further improve the reliability of the predicted temperature. The control unit starts the cooling and heat dissipation component 5 according to the comparison between the predicted temperature and the trigger value, which can realize heat dissipation in advance and avoid damage to the dry-type transformer 3 due to excessive temperature. The overall module makes the heat dissipation control more forward-looking and accurate.

[0097] Example 6

[0098] Based on Example 4, the dynamic thermal field balancing module includes:

[0099] The gradient analysis unit is used to calculate the difference between the values ​​collected by adjacent temperature sensors to generate the thermal field gradient matrix;

[0100] The flow control unit is used to control the injection angle and air flow rate of the nozzle 53 inside the heat conduction pipe 4 based on the thermal field gradient matrix.

[0101] The adaptive pressure regulating unit changes the negative pressure intensity of the exhaust chamber 11 by adjusting the power of the exhaust pump 54, guiding the airflow to gather in the high-temperature area.

[0102] The working principle and beneficial effects of the above technical solution are as follows: The gradient analysis unit of the thermal field dynamic equilibrium module calculates the difference between the values ​​collected by adjacent temperature sensors to generate a thermal field gradient matrix. The flow control unit controls the injection angle and air flow of the nozzle 53 in the heat conduction pipe 4 based on the matrix. The adaptive pressure regulating unit changes the negative pressure intensity of the exhaust chamber 11 by adjusting the power of the exhaust pump 54, and guides the airflow to gather in the high temperature area to achieve dynamic equilibrium of the thermal field.

[0103] The thermal gradient matrix generated by the gradient analysis unit can clearly reflect the temperature difference inside the dry-type transformer 3, providing a basis for subsequent heat dissipation adjustments. The flow control unit controls the injection angle and airflow of the nozzle 53 in the heat conduction pipe 4, which can deliver more cold air to the high-temperature area in a targeted manner to improve the local heat dissipation effect. The adaptive pressure regulating unit adjusts the power of the exhaust pump 54 to change the negative pressure intensity of the exhaust chamber 11, which can guide the airflow to gather in the high-temperature area and further enhance the heat dissipation capacity of the high-temperature area. The synergistic effect of the three can effectively balance the internal thermal field of the transformer, avoid local overheating, extend the service life of the dry-type transformer 3, and improve operational stability.

[0104] Example 7

[0105] Based on Example 4, the fault diagnosis linkage module includes:

[0106] The dual-channel monitoring unit compares the data deviations between the intake manifold flow sensor 51 and the exhaust port pressure sensor 56 in real time.

[0107] The fault tree analysis unit locates the blockage or leakage location based on the fault tree model when the data deviation between the intake manifold 51 flow sensor and the exhaust port 56 pressure sensor exceeds the limit.

[0108] Emergency diversion path: When a local air duct failure is detected, the redundant ventilation valve on the insulating partition 2 is activated to divert the airflow.

[0109] The working principle and beneficial effects of the above technical solution are as follows: The dual-channel monitoring unit of the fault diagnosis linkage module compares the data deviation between the flow sensor of the intake pipe 51 and the pressure sensor of the exhaust port 56 in real time. When the deviation exceeds the limit, the fault tree analysis unit locates the blockage or leakage location based on the fault tree model. When the emergency diversion path detects the failure of the local air duct, it activates the redundant ventilation valve on the insulating partition 2 to divert the airflow and ensure the continuous operation of the heat dissipation system.

[0110] The dual-channel monitoring unit compares the flow rate of the intake pipe 51 and the pressure data of the exhaust port 56 in real time, which can promptly detect abnormalities in the heat dissipation system. The fault tree analysis unit can quickly locate the blockage or leakage, which facilitates timely maintenance by staff and shortens the fault handling time. The emergency diversion path activates the redundant ventilation valve on the insulating partition 2 to divert the airflow when a local air duct fails, ensuring that the heat dissipation system can still maintain a certain heat dissipation capacity, avoiding overall heat dissipation failure due to local faults, improving the fault tolerance and reliability of the heat dissipation system, and ensuring the safe and stable operation of the dry-type transformer 3.

[0111] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A three-dimensional heat dissipation duct structure heat dissipation system for a dry-type transformer, used for dissipating heat from a three-dimensional heat dissipation duct structure for a dry-type transformer, the three-dimensional heat dissipation duct structure for the dry-type transformer comprising: The protective housing (1) is used to protect the dry-type transformer (3). The dry-type transformer (3) includes a coil (30), a core (31), and a mounting frame (32). The mounting frame (32) includes a bottom mounting plate (33), an upper clamping frame (34), and an intermediate telescopic column (35). The intermediate telescopic column (35) is installed between the bottom mounting plate (33) and the upper clamping frame (34) to adjust the distance between the bottom mounting plate (33) and the upper clamping frame (34) to accommodate dry-type transformers (3) of different specifications. An insulating partition (2) is installed inside the protective housing (1) to divide the protective housing (1) into an air inlet chamber (10) and an exhaust chamber (11). Several heat-conducting pipes (4) are set on the insulating partition (2), and are coaxial with the dry-type transformer (3) and the coil (30) and correspond one-to-one. The dry-type transformer (3) is located inside the heat-conducting pipes (4). The cooling and heat dissipation component (5) is connected to the heat conduction pipe (4) and is used to cool the outside air and then accurately input it to the coil (30) of the dry transformer (3). The dry-type transformer three-dimensional heat dissipation air duct structure heat dissipation system is characterized by further comprising: The heat dissipation prediction and control module is connected to the cooling and heat dissipation component (5) and is used to predict the future temperature development trend of the dry-type transformer and control the cooling and heat dissipation component (5) to perform heat dissipation operation. The dynamic thermal field balancing module is connected to the heat dissipation prediction and control module to identify differences in the thermal field distribution inside the transformer and generate local compensation commands. A multi-level heat dissipation strategy module dynamically adjusts the working mode of the cooling and heat dissipation components (5) based on the rate of temperature change; The fault diagnosis and linkage module monitors the operating status of the heat dissipation components in real time and triggers emergency heat dissipation strategies. The heat dissipation prediction and control module includes: Temperature acquisition unit, the temperature acquisition unit includes several temperature sensors installed on dry transformer (3), the several temperature sensors are evenly arranged along the axis of dry transformer (3); The matrix construction unit is used to construct a dry-type transformer temperature rise prediction matrix based on the acquisition results of the temperature acquisition unit. The control unit is used to calculate the predicted temperature value of the next acquisition cycle based on the dry transformer temperature rise prediction matrix and compare it with the preset heat dissipation trigger temperature value. If the predicted temperature value exceeds the heat dissipation trigger temperature value, the cooling heat dissipation component (5) is started; otherwise, it is not started. The dynamic thermal field balancing module includes: The gradient analysis unit is used to calculate the difference between the values ​​collected by adjacent temperature sensors to generate the thermal field gradient matrix; The flow control unit is used to control the injection angle and air flow rate of the nozzle (53) inside the heat conduction pipe (4) based on the thermal field gradient matrix; The adaptive pressure regulating unit changes the negative pressure intensity of the exhaust chamber (11) by adjusting the power of the exhaust pump (54), and guides the airflow to gather in the high-temperature area; The matrix construction unit includes: The sorting subunit arranges all the temperature values ​​of the dry-type transformers collected by each temperature sensor in chronological order to form sequence one; The difference acquisition unit calculates the difference between the arranged dry-type transformer temperature values ​​and the corresponding dry-type transformer temperature values ​​to its left and right, respectively, to obtain the left difference value and right difference value corresponding to each dry-type transformer temperature value. The left difference value of the first dry-type transformer temperature value is set to the same value as its right difference value, and the right difference value of the last dry-type transformer temperature value is set to the same value as its left difference value. The left difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence two. The right difference values ​​of each temperature sensor dry-type transformer temperature value are arranged in the order of the corresponding dry-type transformer temperature values ​​to form sequence three. The matrix is ​​constructed by using sequence one, sequence two, and sequence three as the first, second, and third rows of the dry-type transformer temperature rise prediction matrix, respectively. ;in, Let be the temperature rise prediction matrix for the dry-type transformer in the region corresponding to the i-th temperature sensor. This represents the temperature value of the first dry-type transformer in sequence one corresponding to the i-th temperature sensor. Let be the temperature value of the second dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the temperature value of the nth dry-type transformer in sequence one corresponding to the i-th temperature sensor. This represents the left difference between the temperature values ​​of the first dry-type transformer in sequence two corresponding to the i-th temperature sensor. Let be the left difference of the temperature value of the second dry-type transformer in sequence two corresponding to the i-th temperature sensor. This represents the left difference of the temperature value of the nth dry-type transformer in sequence two corresponding to the i-th temperature sensor. This is the right difference between the temperature values ​​of the first dry-type transformer in sequence three corresponding to the i-th temperature sensor. This is the right difference between the temperature values ​​of the second dry-type transformer in sequence three corresponding to the i-th temperature sensor. This is the right difference of the temperature value of the nth dry-type transformer in sequence three corresponding to the i-th temperature sensor; The prediction subunit obtains the detection value of each temperature sensor in the next acquisition cycle based on the dry transformer temperature rise prediction matrix of the corresponding area of ​​each temperature sensor, and calculates the average value of the detection value of each temperature sensor in the next acquisition cycle as the predicted dry transformer temperature value inside the motor in the next acquisition cycle. Based on the dry-type transformer temperature rise prediction matrix corresponding to each temperature sensor region, the detection values ​​for the next acquisition cycle of each temperature sensor are obtained, including: The mean value of all matrix elements in the third row of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is obtained, and the value of the last column of the dry transformer temperature rise prediction matrix for the region corresponding to each temperature sensor is set to the value equal to the mean value of all matrix elements in the third row, thereby obtaining a new matrix. The product of the rank of the new matrix and the dry transformer temperature value of the previous acquisition cycle is used as the detection value of each temperature sensor in the next acquisition cycle. The predicted temperature value acquisition unit uses the average value of the detection values ​​of several temperature sensors in the next acquisition cycle as the predicted temperature value of the dry-type transformer.

2. The heat dissipation system of a three-dimensional heat dissipation duct structure for a dry-type transformer according to claim 1, characterized in that, The cooling and heat dissipation component (5) includes: The intake assembly and the exhaust assembly are provided. The intake assembly is located in the intake chamber (10) and the output end of the intake assembly is connected to the heat conduction pipe (4). The exhaust assembly is located on the protective housing (1) and is used to exhaust the hot air in the exhaust chamber (11).

3. The heat dissipation system of a three-dimensional heat dissipation duct structure for a dry-type transformer according to claim 2, characterized in that, The air intake assembly includes: Several gas collection boxes (50) are connected to the external environment through a negative pressure fan. Adjacent gas collection boxes (50) are connected through an air inlet pipe (51). An intermediate air supply pipe (52) is provided at the outlet end of the gas collection box (50). A one-way valve is provided inside the intermediate air supply pipe (52). The output end of the intermediate air supply pipe (52) is connected to the air supply pipe inside the heat conduction pipe (4) through the connecting through hole on the insulating partition (2). Several nozzles (53) are provided on the air supply pipe. The refrigeration component (55) is located outside the air intake pipe (51).

4. The heat dissipation system of a three-dimensional heat dissipation duct structure for a dry-type transformer according to claim 3, characterized in that, The exhaust assembly includes: The exhaust port (56) is located on the protective housing (1) and corresponds one-to-one with the coil (30) of the dry-type transformer (3). Each exhaust port (56) is equipped with an exhaust pump (54).

5. The heat dissipation system of a three-dimensional heat dissipation duct structure for a dry-type transformer according to claim 4, characterized in that, The fault diagnosis linkage module includes: The dual-channel monitoring unit compares the data deviations between the flow sensor in the intake pipe (51) and the pressure sensor in the exhaust port (56) in real time. The fault tree analysis unit locates the blockage or leakage location based on the fault tree model when the data deviation between the intake pipe (51) flow sensor and the exhaust port (56) pressure sensor exceeds the limit. Emergency diversion path: When a local air duct failure is detected, the redundant ventilation valve on the insulating partition (2) is activated to divert the airflow.

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