A transformer cooling method, system, intelligent terminal and storage medium

Abstract

The present application relates to a transformer cooling method, system, intelligent terminal and storage medium, and relates to the field of transformer technology, including obtaining a start trigger signal of the transformer; obtaining the internal detection temperature and basic circulation speed of the transformer based on the start trigger signal; analyzing the internal detection temperature and the preset internal stable temperature to determine the adjustment temperature difference; determining the speed adjustment factor according to the relationship between the adjustment temperature difference and the preset temperature difference factor; analyzing the speed adjustment factor and the basic circulation speed to determine the adjustment circulation speed; controlling the preset circulation oil pump to circulate the preset insulating oil according to the adjustment circulation speed to cool the transformer. The present application has the effect of improving the cooling effect of the transformer.

Description

Technical Field

[0001] The present application relates to the field of transformer technology, and in particular to a transformer cooling method, system, intelligent terminal and storage medium. Background Art

[0002] A transformer is a static electrical device that uses the principle of electromagnetic induction to convert AC power of one voltage level into AC power of another voltage level with the same frequency.

[0003] In the related technology, the cooling method of oil-immersed transformers mainly relies on the insulating oil inside the transformer. When the transformer is working, the oil pump inside the transformer will force the insulating oil to circulate, so that the insulating oil transfers the heat generated inside the transformer to the surrounding air through the radiator, and finally the insulating oil returns to the bottom of the transformer to form a natural circulation.

[0004] With respect to the above-mentioned related technologies, when the oil pump forces the insulating oil to circulate at the rated speed, if the temperature inside the transformer is high, the circulation of the insulating oil by the oil pump will cause the cooling efficiency of the transformer to deteriorate. If the temperature inside the transformer is low, the circulation of the insulating oil by the oil pump will cause energy waste, resulting in poor cooling effect on the transformer. There is still room for improvement. Summary of the invention

[0005] In order to improve the cooling effect of the transformer, the present application provides a transformer cooling method, system, intelligent terminal and storage medium.

[0006] In a first aspect, the present application provides a transformer cooling method, which adopts the following technical solution:

[0007] A transformer cooling method, comprising:

[0008] Obtaining a start trigger signal of the transformer;

[0009] Acquire the internal detection temperature and basic cycle speed of the transformer based on the start trigger signal;

[0010] Analyze the internal detection temperature and the preset internal stable temperature to determine the adjustment temperature difference;

[0011] Determining a speed adjustment factor according to a relationship between an adjusted temperature difference and a preset temperature difference factor;

[0012] Analyze the speed adjustment factor and the base cycle speed to determine the adjusted cycle speed;

[0013] The preset circulating oil pump is controlled according to the adjusted circulation speed to circulate the preset insulating oil to cool the transformer.

[0014] By adopting the above technical scheme, the adjustment temperature difference is determined according to the internal detection temperature and the internal stable temperature of the transformer, and the speed adjustment factor for speeding up or slowing down is determined according to the positive and negative values ​​of the adjustment temperature difference. The basic circulation speed is increased or slowed down by the speed adjustment factor, so that the circulating oil pump circulates the insulating oil at the corresponding speed, so that the temperature in the transformer tends to the internal stable temperature, instead of always maintaining the basic circulation speed, which makes the transformer unable to be effectively cooled, thereby improving the cooling effect of the transformer.

[0015] Optionally, the step of controlling a preset circulating oil pump to circulate preset insulating oil to cool the transformer according to adjusting the circulation speed includes:

[0016] Control the circulating oil pump to adjust the circulation speed to circulate the insulating oil and obtain the internal temperature change of the transformer;

[0017] Determine whether the internal change temperature meets the requirements of the internal stable temperature;

[0018] If it does not meet the requirements, the circulating oil pump is controlled to circulate the insulating oil according to the adjusted circulation speed, and the internal temperature change of the transformer is continuously obtained for circulation judgment;

[0019] If it meets the requirements, the circulating oil pump is controlled to circulate the insulating oil according to the basic circulation speed.

[0020] By adopting the above technical solution, when the circulating oil pump circulates the insulating oil at an adjusted circulation speed, the internal temperature change of the transformer is detected. If the internal temperature change has reached the internal stable temperature, it indicates that the temperature of the transformer does not need to change any more. At this time, it is not appropriate to continue to circulate using the adjusted circulation speed. Only the basic circulation speed is needed to ensure the cooling effect of the transformer, thereby improving the convenience of cooling the transformer.

[0021] Optionally, the step of controlling the circulating oil pump to circulate the insulating oil according to the basic circulation speed includes:

[0022] Control the circulating oil pump to circulate the insulating oil at the basic circulation speed and obtain the real-time detection load of the transformer;

[0023] Analyze the real-time detection load to determine whether the real-time detection load meets the preset changed load requirement;

[0024] If it does not meet the requirements, the circulating oil pump continues to be controlled to circulate the insulating oil at the basic circulation speed, and the real-time detection load of the transformer continues to be obtained;

[0025] If it is in compliance, the updated circulation speed of the circulating oil pump is determined according to the real-time detected load and the preset load-speed relationship, and the updated circulation speed is defined as the basic circulation speed;

[0026] The circulating oil pump is controlled to circulate the insulating oil at a basic circulation speed.

[0027] By adopting the above technical solution, when the circulating oil pump circulates the insulating oil at the basic circulation speed, if it is determined that the real-time detected load of the transformer has changed, the updated circulation speed suitable for the transformer is determined according to the real-time detected load, and the updated circulation speed is defined as the basic circulation speed, so that the circulating oil pump can adjust the speed in real time according to the load of the transformer, preventing the circulating oil pump from still circulating at the original speed after the load of the transformer has changed, thereby improving the cooling effect on the transformer.

[0028] Optionally, the circulating oil pump includes a vertical circulating oil pump and a horizontal circulating oil pump, and the step of controlling the circulating oil pump to circulate the insulating oil at a basic circulation speed includes:

[0029] Determine the cooling power according to the basic cycle speed and the preset speed-power relationship;

[0030] Control the vertical circulation oil pump to pump the insulating oil into the preset heat dissipation device at the basic circulation speed;

[0031] Control the heat dissipation device to dissipate heat from the insulating oil according to the cooling power, and control the vertical circulation oil pump to push the insulating oil back into the transformer;

[0032] Determine the horizontal circulation height according to the basic circulation speed and the preset speed-height relationship;

[0033] Determine the horizontal cycle speed according to the basic cycle speed and the preset speed cycle relationship;

[0034] The movement of the preset oil pipe on the horizontal circulation oil pump is controlled according to the horizontal circulation height, and the horizontal circulation oil pump is controlled according to the horizontal circulation speed to circulate the insulating oil in the center of the transformer to the outside of the transformer.

[0035] By adopting the above technical scheme, the cooling and heat dissipation power is determined according to the basic circulation speed, so that when the vertical circulation oil pump draws the insulating oil into the heat dissipation device, the heat dissipation device cools the insulating oil with the cooling and heat dissipation power, ensuring that the heat of the insulating oil can be dissipated to the surrounding air in time. At the same time, the horizontal circulation oil pump is controlled to draw the hot oil in the center of the transformer to the outside of the transformer, ensuring that the insulating oil with a lower temperature can fully contact the transformer, thereby improving the cooling effect of the transformer.

[0036] Optionally, when the internal temperature change does not meet the internal stable temperature requirement, an oil change circulation cooling step is also included, and the specific steps include:

[0037] Determine the temperature adjustment time according to the adjusted temperature difference and the preset temperature-time relationship;

[0038] Get the temperature holding time of the transformer;

[0039] Determine whether the temperature holding time meets the temperature adjustment time requirements;

[0040] If it meets the requirement, the temperature holding time of the transformer is continuously obtained for cyclic judgment;

[0041] If it does not meet the requirements, the preset oil change device is controlled to cool the transformer according to the preset oil change cycle trigger signal.

[0042] By adopting the above technical solution, when the temperature holding time exceeds the temperature adjustment time, it means that the circulating oil pump cannot effectively reduce the temperature of the transformer to a stable temperature when circulating the insulating oil. At this time, the oil changing device is controlled according to the oil change trigger signal to change the insulating oil with lower temperature into the transformer in large quantities, thereby improving the cooling effect of the transformer.

[0043] Optionally, the step of controlling a preset oil changing device to cool the transformer according to a preset oil changing cycle trigger signal includes:

[0044] Obtaining transformer oil quality detection data based on oil change cycle trigger signal;

[0045] Determine whether the oil quality test data meets the preset requirements of normal oil quality data;

[0046] If it does not meet the requirements, the transformer is controlled to shut down, and the oil changing device is controlled to change the oil of the transformer according to the preset comprehensive oil change trigger signal;

[0047] If it meets the requirements, the oil changing device is controlled according to the preset oil changing speed to pump the insulating oil in the transformer into the preset main oil tank for cooling;

[0048] The oil changing device is controlled according to the oil changing speed to draw the insulating oil in the preset spare oil tank into the transformer to cool the transformer.

[0049] By adopting the above technical scheme, when it is determined that the oil quality detection data of the transformer does not meet the requirements of the normal oil quality data, it indicates that the insulating oil in the transformer has deteriorated, resulting in the temperature of the transformer being unable to drop. Therefore, the oil changing device is controlled to change the oil of the transformer according to the comprehensive oil change trigger signal; if it meets the requirements, it indicates that the high temperature of the transformer is only due to the high temperature of the insulating oil. At this time, the oil changing device is controlled to pump the insulating oil in the transformer into the main oil tank for cooling, and at the same time, the oil changing device is controlled to pump the insulating oil with a lower temperature in the spare oil tank into the transformer, thereby improving the cooling effect of the transformer.

[0050] Optionally, the step of acquiring oil quality detection data of the transformer based on the oil change cycle trigger signal includes:

[0051] Acquire a circulation process image of the insulating oil based on an oil change cycle trigger signal;

[0052] Performing image recognition analysis on the cycle process image to determine whether there are preset impurity features in the cycle process image;

[0053] If it does not exist, the preset normal detection data is defined as the oil quality detection data;

[0054] If it exists, the preset abnormal detection data is defined as oil quality detection data.

[0055] By adopting the above technical solution, the circulation process images of the insulating oil are collected, and then image recognition and analysis are performed on the circulation process images. When it is determined that there are impurity features in the circulation process images, the abnormal detection data is defined as oil quality detection data. If not, the normal detection data is defined as oil quality detection data, thereby improving the convenience of obtaining oil quality detection data.

[0056] In a second aspect, the present application provides a transformer cooling system, which adopts the following technical solution:

[0057] A transformer cooling system, comprising:

[0058] An acquisition module, used for acquiring a start trigger signal, an internal detection temperature and a basic cycle speed;

[0059] A memory, used to store a program of a transformer cooling method as described in any one of the above items;

[0060] The program in the memory can be loaded and executed by the processor to implement a transformer cooling method as described in any one of the above items.

[0061] By adopting the above technical solution, the control processor loads and executes a program of a transformer cooling method stored in the memory, so that the acquisition module acquires a series of data related to transformer cooling, and determines the adjustment temperature difference according to the internal detection temperature and the internal stable temperature of the transformer, so as to determine the speed adjustment factor for speeding up or slowing down according to the positive and negative values ​​of the adjustment temperature difference, and speeds up or slows down the basic circulation speed according to the speed adjustment factor, so that the circulating oil pump circulates the insulating oil at the corresponding speed, so that the temperature in the transformer tends to the internal stable temperature, instead of always maintaining the basic circulation speed, which makes the transformer unable to be effectively cooled, thereby improving the cooling effect of the transformer.

[0062] In a third aspect, the present application provides a smart terminal, which adopts the following technical solution:

[0063] An intelligent terminal comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes a transformer cooling method as described in any one of the above items.

[0064] By adopting the above technical solution, by operating the intelligent terminal, the processor loads and executes a computer program of a transformer cooling method in the memory, thereby determining the adjustment temperature difference according to the internal detection temperature and the internal stable temperature of the transformer, and determining the speed adjustment factor for speeding up or slowing down according to the positive and negative values ​​of the adjustment temperature difference, and speeding up or slowing down the basic circulation speed according to the speed adjustment factor, so that the circulating oil pump circulates the insulating oil at the corresponding speed, so that the temperature in the transformer tends to the internal stable temperature, instead of always maintaining the basic circulation speed, which makes the transformer unable to be effectively cooled, thereby improving the cooling effect of the transformer.

[0065] In a fourth aspect, the present application provides a computer storage medium capable of storing a corresponding program, which is convenient for improving the cooling effect of the transformer, and adopts the following technical solution:

[0066] A computer-readable storage medium stores a computer program that can be loaded by a processor and execute any of the above transformer cooling methods.

[0067] By adopting the above technical solution, a computer program of a transformer cooling method is stored in a computer-readable storage medium, so that a processor loads and executes the computer program in the storage medium, thereby determining an adjustment temperature difference according to an internal detection temperature and an internal stable temperature of the transformer, thereby determining a speed adjustment factor for speeding up or speeding down according to a positive or negative value of the adjustment temperature difference, and speeding up or speeding down the basic circulation speed according to the speed adjustment factor, so that the circulating oil pump circulates the insulating oil at a corresponding speed, so that the temperature in the transformer tends to the internal stable temperature, rather than always maintaining the basic circulation speed, resulting in an inability to effectively cool the transformer, thereby improving the cooling effect of the transformer.

[0068] In summary, the present application includes at least one of the following beneficial technical effects:

[0069] By determining the adjustment temperature difference according to the internal detection temperature and the internal stable temperature of the transformer, the speed adjustment factor for speeding up or speeding down is determined according to the positive or negative value of the adjustment temperature difference, and the basic circulation speed is increased or decreased by the speed adjustment factor, so that the circulating oil pump circulates the insulating oil at the corresponding speed, so that the temperature in the transformer tends to the internal stable temperature, instead of always maintaining the basic circulation speed, which makes the transformer unable to be effectively cooled, thereby improving the cooling effect of the transformer;

[0070] When the circulating oil pump circulates the insulating oil at the basic circulation speed, if it is determined that the real-time detected load of the transformer has changed, the updated circulation speed suitable for the transformer is determined according to the real-time detected load, and the updated circulation speed is defined as the basic circulation speed, so that the circulating oil pump can adjust the speed in real time according to the load of the transformer, and prevent the circulating oil pump from still circulating at the original speed after the load of the transformer has changed, thereby improving the cooling effect of the transformer;

[0071] By determining the cooling power according to the basic circulation speed, when the vertical circulation oil pump draws the insulating oil into the heat sink, the heat sink cools the insulating oil with the cooling power to ensure that the heat of the insulating oil can be dissipated to the surrounding air in time. At the same time, the horizontal circulation oil pump is controlled to draw the hot oil in the center of the transformer to the outside of the transformer to ensure that the insulating oil with a lower temperature can fully contact the transformer, thereby improving the cooling effect of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0072] Figure 1 This is a flow chart of a transformer cooling method in an embodiment of the present application.

[0073] Figure 2 It is a flow chart of the steps of controlling a preset circulating oil pump to circulate preset insulating oil to cool the transformer according to adjusting the circulation speed in an embodiment of the present application.

[0074] Figure 3 It is a flow chart of the steps of controlling the circulating oil pump to circulate the insulating oil according to the basic circulation speed in an embodiment of the present application.

[0075] Figure 4 It is a flow chart of the steps of controlling the circulating oil pump to circulate the insulating oil at a basic circulation speed in an embodiment of the present application.

[0076] Figure 5 It is a flow chart of the oil change cycle cooling step in the embodiment of the present application.

[0077] Figure 6 It is a flow chart of the steps of controlling a preset oil change device to cool a transformer according to a preset oil change cycle trigger signal in an embodiment of the present application.

[0078] Figure 7 It is a flowchart of the steps of obtaining oil quality detection data of the transformer based on the oil change cycle trigger signal in an embodiment of the present application. DETAILED DESCRIPTION

[0079] In order to make the purpose, technical solutions and advantages of this application more clear, the following Figure 1-Figure 7It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0080] The embodiment of the present application discloses a cooling method for an oil-immersed transformer, and specifically discloses a processing terminal and a circulating oil pump. The processing terminal and the circulating oil pump are connected through a data wire to realize data interaction and control. When the processing terminal receives a start trigger signal of the transformer, the processing terminal responds to the start trigger signal to detect the internal detection temperature and the basic circulation speed of the transformer. The processing terminal calculates the difference between the internal detection temperature and the internal stable temperature to obtain an adjusted temperature difference, and then determines the speed adjustment factor according to the relationship between the adjusted temperature difference and the temperature difference factor. The product between the speed adjustment factor and the basic circulation speed is calculated to obtain the adjusted circulation speed, thereby controlling the circulating oil pump to circulate the insulating oil at the adjusted circulation speed, so that the internal temperature of the transformer tends to a stable temperature, rather than circulating at only one speed, resulting in the inability to effectively cool the transformer when the temperature inside the transformer is high.

[0081] Reference Figure 1 The present application embodiment discloses a transformer cooling method, comprising the following steps:

[0082] Step S100: obtaining a start trigger signal of the transformer.

[0083] The start trigger signal refers to the trigger data for starting the transformer. After the transformer is started, the transformer sends a high-level signal representing the start trigger signal to the processing terminal.

[0084] Step S101: acquiring the internal detection temperature and basic cycle speed of the transformer based on a start trigger signal.

[0085] Among them, after receiving the start trigger signal, the processing terminal detects the internal detection temperature and basic circulation speed of the transformer to provide data support for the subsequent cooling of the transformer.

[0086] The internal detection temperature refers to the temperature inside the transformer, which is detected by the temperature sensor installed inside the transformer and sent to the processing terminal. The basic cycle speed refers to the cycle speed that maintains the temperature of the transformer stable. The power meter on the output side of the transformer detects the load of the transformer, and then searches the mapping table of load and cycle speed according to the load of the transformer to obtain the basic cycle speed corresponding to the current load.

[0087] Step S102: Analyze the internal detection temperature and the preset internal stable temperature to determine the adjustment temperature difference.

[0088] Among them, the internal stable temperature refers to the internal temperature that ensures stable operation of the transformer, which is determined by the operator based on the actual situation of the transformer.

[0089] The adjustment temperature difference refers to a temperature value that needs to be adjusted, and is obtained by calculating the difference between the internal detection temperature and the internal stable temperature by the processing terminal.

[0090] Step S103: determining a speed adjustment factor according to the relationship between the adjusted temperature difference and a preset temperature difference factor.

[0091] Among them, the temperature difference factor relationship refers to the corresponding relationship between the temperature difference and the speed adjustment factor. The temperature difference is divided into positive and negative types. When the temperature difference is positive, the speed adjustment factor is greater than 1. The greater the temperature difference, the greater the speed adjustment factor; when the temperature difference is negative, the speed adjustment factor is less than 1, and the smaller the temperature difference, the smaller the speed adjustment factor. The operator forms a mapping table by matching the temperature difference and the speed adjustment factor one by one.

[0092] The speed adjustment factor refers to a factor for adjusting the circulation speed, and is obtained by searching the mapping table corresponding to the temperature difference factor relationship according to the adjustment temperature difference value by the processing terminal.

[0093] Step S104: Analyze the speed adjustment factor and the basic cycle speed to determine the adjusted cycle speed.

[0094] The adjusted cycle speed refers to the adjusted cycle speed, which is obtained by calculating the product of the speed adjustment factor and the basic cycle speed by the processing terminal.

[0095] Step S105: controlling a preset circulating oil pump to circulate preset insulating oil to cool the transformer according to the adjusted circulation speed.

[0096] Among them, after the processing terminal obtains the adjusted circulation speed, the circulating oil pump is controlled according to the adjusted circulation speed to circulate the insulating oil. The specific method is referred to Figure 2 steps, so that the insulating oil can carry the heat generated by the transformer out of the transformer at an appropriate speed and dissipate it into the surrounding air, so that the temperature of the transformer tends to a stable temperature, thereby improving the cooling effect of the transformer.

[0097] A circulating oil pump is an oil pump that circulates the insulating oil in the transformer, including vertical circulating oil pumps and horizontal circulating oil pumps. The vertical circulating oil pump draws the insulating oil in the transformer out of the transformer for heat dissipation and then draws it back into the transformer for circulating cooling. The horizontal circulating oil pump draws the insulating oil in the center of the transformer to the outside of the transformer, so that the insulating oil with a lower temperature is fully in contact with the transformer. Insulating oil refers to the oil installed inside the transformer to insulate and cool the transformer.

[0098] Reference Figure 2 The steps of controlling a preset circulating oil pump to circulate preset insulating oil to cool the transformer according to adjusting the circulation speed include:

[0099] Step S200: Control the circulating oil pump to adjust the circulation speed to circulate the insulating oil, and obtain the internal temperature change of the transformer.

[0100] Among them, after determining to adjust the circulation speed, the processing terminal controls the vertical circulation oil pump in the circulation oil pump to circulate the insulating oil by adjusting the circulation speed, so that the temperature of the transformer tends to a stable temperature, and detects the internal temperature change of the transformer to provide data support for the subsequent cooling of the transformer.

[0101] The internal change temperature refers to the temperature inside the transformer after the transformer is cooled, which is detected by a temperature sensor inside the transformer and sent to a processing terminal.

[0102] Step S201: Determine whether the internal change temperature meets the requirement of the internal stable temperature.

[0103] The requirement of the internal stable temperature refers to being consistent with the internal stable temperature. The processing terminal determines whether the internal change temperature is consistent with the internal stable temperature, thereby determining whether the circulating oil pump cools the internal temperature of the transformer to the stable temperature.

[0104] Step S2011: If it does not meet the requirements, continue to control the circulating oil pump to circulate the insulating oil according to the adjusted circulation speed, and continue to obtain the internal temperature change of the transformer for circulation judgment.

[0105] Among them, if the processing terminal determines that the internal change temperature is inconsistent with the internal stable temperature, it means that the circulating oil pump has not cooled the temperature inside the transformer to a stable temperature. Therefore, the circulating oil pump continues to circulate the insulating oil according to the adjusted circulation speed, and continues to collect the internal change temperature of the transformer, so as to continue to pay attention to the cooling effect of the insulating oil on the transformer.

[0106] Step S2012: If it is met, the circulating oil pump is controlled to circulate the insulating oil according to the basic circulation speed.

[0107] If the processing terminal determines that the internal change temperature is consistent with the internal stable temperature, it means that the circulating oil pump has cooled the temperature inside the transformer to a stable temperature. At this time, it is only necessary to maintain the temperature. Therefore, the circulating oil pump is controlled to circulate the insulating oil according to the basic circulation speed. The specific method is referred to Figure 3 steps, so that the insulating oil can carry the heat generated by the transformer out of the transformer, ensuring that the temperature of the transformer is maintained at a stable temperature.

[0108] Reference Figure 3 The steps of controlling the circulating oil pump to circulate the insulating oil according to the basic circulation speed include:

[0109] Step S300: Control the circulating oil pump to circulate the insulating oil at a basic circulation speed, and obtain the real-time detection load of the transformer.

[0110] Among them, after the temperature in the transformer reaches a stable temperature, the processing terminal controls the circulating oil pump to circulate the insulating oil at the basic circulation speed. The specific method is referred to Figure 4 steps to maintain the temperature of the transformer at a stable temperature, and detect the real-time detection load of the transformer to provide data support for subsequent cooling of the transformer.

[0111] The real-time detection load refers to the load on the output side of the transformer, which is detected by a power meter installed on the output side of the transformer and sent to a processing terminal.

[0112] Step S301: Analyze the real-time detected load to determine whether the real-time detected load meets the preset changed load requirement.

[0113] The changed load refers to a load that has changed, and the requirement of the changed load refers to a requirement that is consistent with a change rule corresponding to the changed load, which is stored in the processing terminal by an operator.

[0114] The real-time detected load is analyzed by the processing terminal to determine whether the change pattern of the real-time detected load is consistent with the change pattern corresponding to the changed load, thereby determining whether the load of the transformer has changed.

[0115] Step S3011: If not, continue to control the circulating oil pump to circulate the insulating oil at the basic circulation speed, and continue to obtain the real-time detection load of the transformer.

[0116] If the processing terminal determines that the change pattern of the real-time detected load is inconsistent with the change pattern corresponding to the changed load, it means that the load of the transformer has not changed. Therefore, it is necessary to change the speed of the circulating oil pump and continue to control the circulating oil pump to circulate the insulating oil at the basic circulation speed. For specific methods, refer to Figure 4 The steps are followed and the real-time detection load of the transformer is continued to be collected, so as to continuously pay attention to the load changes of the transformer.

[0117] Step S3012: If it is in compliance, the updated circulation speed of the circulating oil pump is determined according to the real-time detected load and the preset load-speed relationship, and the updated circulation speed is defined as the basic circulation speed.

[0118] Among them, if the processing terminal determines that the change pattern of the real-time detected load is consistent with the change pattern corresponding to the changed load, it means that the load of the transformer has changed, so it is necessary to change the circulation speed of the circulating oil pump, so as to determine the update circulation speed according to the relationship between the real-time detected load and the load speed, and define the update circulation speed as the basic circulation speed, so as to provide data support for the subsequent control of the circulating oil pump.

[0119] The load-speed relationship refers to the corresponding relationship between the transformer load and the cycle speed. When the stable temperature is determined, the greater the transformer load, the greater the cycle speed. The operator applies different loads to the transformer and adjusts the cycle speed from small to large, thereby determining that the cycle speed when the transformer temperature is maintained at a stable temperature is the cycle speed corresponding to the load, and the operator forms a mapping table by matching the two one by one.

[0120] The update cycle speed refers to the cycle speed after the load of the transformer changes, and is obtained by searching in a mapping table corresponding to the load-speed relationship according to the real-time detected load by the processing terminal.

[0121] Step S302: Control the circulating oil pump to circulate the insulating oil at a basic circulation speed.

[0122] After the processing terminal obtains the new basic circulation speed, the processing terminal controls the circulating oil pump to circulate the insulating oil at the basic circulation speed. The specific method is as follows Figure 4 steps, so that the internal temperature of the transformer can still be maintained at a stable temperature after the load changes, thereby improving the cooling effect of the transformer.

[0123] Reference Figure 4 The circulating oil pump includes a vertical circulating oil pump and a horizontal circulating oil pump, and the steps of controlling the circulating oil pump to circulate the insulating oil at a basic circulation speed include:

[0124] Step S400: determining the cooling power according to the basic cycle speed and a preset speed-power relationship.

[0125] Among them, the speed-power relationship refers to the corresponding relationship between the circulation speed and the heat dissipation power. The faster the circulation speed, the greater the corresponding heat dissipation power is required. The operator draws the insulating oil into the heat dissipation device at different circulation speeds, and then controls the heat dissipation device to dissipate heat at different heat dissipation powers, thereby selecting the heat dissipation power that can cool the insulating oil to the required temperature, and forming a mapping table after one-to-one correspondence with the circulation speed.

[0126] The cooling power refers to the power used to dissipate heat for the circulating insulating oil, and is obtained by searching the mapping table corresponding to the speed-power relationship according to the basic circulation speed by the processing terminal.

[0127] Step S401: Control the vertical circulation oil pump to pump insulating oil into a preset heat dissipation device at a basic circulation speed.

[0128] Among them, after the internal temperature of the transformer reaches a stable temperature, the processing terminal controls the vertical circulation oil pump to pump the insulating oil into the heat dissipation device at a basic circulation speed, so that the insulating oil can bring the heat generated by the transformer out of the transformer and provide basic support for the subsequent heat dissipation of the insulating oil.

[0129] The heat dissipation device refers to a device used to dissipate the heat of the insulating oil that absorbs the heat of the transformer. A radiator and a fan can be used. The radiator is installed on the outside of the oil tank to increase the contact area between the insulating oil and the air, and the fan is used to increase the air flow around the radiator.

[0130] Step S402: controlling the heat dissipation device to dissipate heat from the insulating oil according to the cooling power, and controlling the vertical circulation oil pump to push the insulating oil back into the transformer.

[0131] Among them, after the vertical circulation water pump draws the insulating oil into the radiator, the processing terminal controls the heat dissipation device to dissipate the heat of the insulating oil according to the cooling and heat dissipation power, thereby ensuring that the insulating oil can dissipate the absorbed heat into the surrounding air within a limited time, and return to the bottom of the transformer again under the push of the vertical circulation oil pump for another heat absorption and heat release cycle.

[0132] Step S403: Determine the horizontal circulation height according to the basic circulation speed and a preset speed-height relationship.

[0133] Among them, the speed-height relationship refers to the corresponding relationship between the circulation speed and the horizontal circulation height. The faster the circulation speed, the faster the insulating oil temperature rises, and therefore the lower the height required for horizontal circulation. The operator circulates the insulating oil at different circulation speeds and detects the height when the insulating oil temperature reaches the circulation temperature. The height and circulation speed are matched one by one to form a mapping table.

[0134] The horizontal circulation height refers to the height at which the insulating oil needs to be circulated horizontally, and is obtained by searching the mapping table corresponding to the speed-height relationship according to the basic circulation speed by the processing terminal.

[0135] Step S404: Determine the horizontal cycle speed according to the basic cycle speed and the preset speed cycle relationship.

[0136] Among them, the speed circulation relationship refers to the corresponding relationship between the basic circulation speed and the horizontal circulation speed. The larger the basic circulation speed, the faster the insulating oil rises. Therefore, the faster the horizontal circulation speed, the more insulating oil in the center can be effectively circulated to the outside. The proportional coefficient between the two is determined by the operator according to the actual situation, and the basic circulation speed and the horizontal circulation speed are matched one by one to form a mapping table.

[0137] The horizontal circulation speed refers to the speed at which the insulating oil circulates in the horizontal direction, and is obtained by searching the mapping table corresponding to the speed circulation relationship according to the basic circulation speed by the processing terminal.

[0138] Step S405: Control the movement of the preset oil pipe on the horizontal circulation oil pump according to the horizontal circulation height, and control the horizontal circulation oil pump according to the horizontal circulation speed to circulate the insulating oil in the center of the transformer to the outside of the transformer.

[0139] Among them, after determining the horizontal circulation height and the horizontal circulation speed, the processing terminal controls the oil pipe on the horizontal circulation oil pump to move to the horizontal circulation height, and controls the horizontal circulation oil pump to circulate the insulating oil in the center of the transformer to the outside of the transformer at the horizontal circulation speed, so that the insulating oil whose temperature reaches the circulation temperature quickly moves away from the center of the transformer, so that the insulating oil with a lower temperature is in contact with the transformer more, ensuring the cooling effect of the transformer.

[0140] The oil pipe refers to the oil pipe on the horizontal circulating oil pump used to pump in and out insulating oil. The oil pipe is controlled by a screw structure to move along the height direction of the transformer.

[0141] Reference Figure 5 When the internal temperature change does not meet the requirements of the internal stable temperature, it also includes an oil change circulation cooling step, and the specific steps include:

[0142] Step S500: determining the temperature adjustment time according to the adjusted temperature difference and a preset temperature-time relationship.

[0143] The temperature-time relationship refers to the corresponding relationship between the temperature difference and the cooling time. The larger the temperature difference, the longer the cooling time is required. The operator records the cooling time for different temperature differences and forms a mapping table by corresponding the two one by one.

[0144] The temperature adjustment time refers to the time required to cool the transformer so that the internal temperature of the transformer is equal to the internal stable temperature, which is obtained by searching the mapping table corresponding to the temperature-time relationship by the processing terminal according to the adjustment temperature difference.

[0145] Step S501: Obtain the temperature maintenance time of the transformer.

[0146] The temperature holding time refers to the time during which the internal change temperature of the transformer is not equal to the internal stable temperature, and is obtained by timing when it is determined that the internal change temperature is not equal to the internal stable temperature.

[0147] Step S502: Determine whether the temperature holding time meets the temperature adjustment time requirement.

[0148] The requirement of the temperature adjustment time refers to not exceeding the temperature adjustment time. The processing terminal determines whether the temperature holding time does not exceed the temperature adjustment time, thereby determining whether the circulating oil pump circulates the insulating oil to effectively reduce the temperature of the transformer.

[0149] Step S5021: If it meets the requirements, continue to obtain the temperature holding time of the transformer for cyclic judgment.

[0150] Among them, if the processing terminal determines that the temperature holding time does not exceed the temperature adjustment time, it indicates that the circulating oil pump may effectively cool the transformer, so the temperature holding time of the transformer continues to be detected, thereby continuously paying attention to the temperature changes of the transformer.

[0151] Step S5022: If not, the preset oil change device is controlled to cool the transformer according to the preset oil change cycle trigger signal.

[0152] If the processing terminal determines that the temperature holding time exceeds the temperature adjustment time, it indicates that the circulating oil pump circulates the insulating oil but does not effectively cool the transformer. Therefore, the oil change device is controlled to cool the transformer according to the oil change cycle trigger signal. For specific methods, refer to Figure 6 steps.

[0153] The oil change cycle trigger signal refers to the trigger data for controlling the oil change device to change oil and cool the transformer, which is stored in the processing terminal by the operator. The oil change device refers to the device for changing oil in the transformer, including an oil change in pump and an oil change out pump, which are connected to two oil tanks respectively.

[0154] Reference Figure 6 The step of controlling a preset oil changing device to cool the transformer according to a preset oil changing cycle trigger signal includes:

[0155] Step S600: Obtaining oil quality detection data of the transformer based on the oil change cycle trigger signal.

[0156] When the processing terminal receives the oil change cycle trigger signal, the processing terminal detects the oil quality detection data of the transformer in response to the oil change trigger signal to provide data support for subsequent determination of how to change the oil.

[0157] Oil quality test data refers to the results of oil quality testing of transformers, including normal oil quality and abnormal oil quality. For specific testing methods, refer to Figure 7 steps.

[0158] Step S601: determine whether the oil quality detection data meets the preset requirements of normal oil quality data.

[0159] The normal oil quality data refers to the normal oil quality detection data, and the requirement for the normal oil quality data refers to the consistency of the result corresponding to the normal oil quality data, which is stored in the processing terminal by the operator.

[0160] By using the processing terminal to determine whether the test result corresponding to the oil quality test data is consistent with the result corresponding to the normal oil quality data, it is determined whether the reason why the transformer cannot be effectively cooled is the deterioration of the insulating oil.

[0161] Step S6011: If not, the transformer is controlled to shut down, and the oil changing device is controlled to change the oil of the transformer according to a preset comprehensive oil change trigger signal.

[0162] Among them, if the processing terminal determines that the test result corresponding to the oil quality test data is inconsistent with the result corresponding to the normal oil quality data, it indicates that the reason why the transformer cannot be effectively cooled is that the insulating oil has deteriorated. Therefore, the transformer is controlled to shut down, and the oil changing device is controlled to change the oil of the transformer according to the comprehensive oil change trigger signal, so that all the insulating oil in the transformer is replaced with normal insulating oil, and then the transformer is controlled to start up, so that the cooling of the transformer returns to normal.

[0163] The full oil change trigger signal refers to the trigger data for first extracting all the deteriorated insulating oil in the transformer and then pumping the insulating oil in the spare oil tank into the transformer, which is stored in the processing terminal by the operator.

[0164] Step S6012: If the conditions are met, the oil changing device is controlled according to a preset oil changing speed to pump the insulating oil in the transformer into a preset main oil tank for cooling.

[0165] Among them, if the processing terminal determines that the test result corresponding to the oil quality test data is consistent with the result corresponding to the normal oil quality data, it means that the reason why the transformer cannot be effectively cooled is not the deterioration of the insulating oil, but the temperature of the insulating oil is too high. Therefore, the oil changing device is controlled according to the oil changing speed to draw the high-temperature insulating oil in the transformer into the main oil tank for cooling. The extraction time is determined by the operator after the insulating oil is extracted according to the extraction speed until it is completely extracted, thereby providing space for the insulating oil with a lower temperature to enter the transformer.

[0166] The oil change speed refers to the oil change speed when the transformer is cooled by oil change. The specific value is determined by the operator according to the actual situation. The main oil tank refers to the oil tank used to hold the insulating oil with a higher temperature. The volume of the main oil tank is not less than the volume of the insulating oil. A radiator is installed on the outside of the main oil tank to speed up the heat dissipation of the insulating oil.

[0167] Step S602: According to the oil change speed, the oil change device is controlled to pump the insulating oil in the preset spare oil tank into the transformer to cool the transformer.

[0168] While the insulating oil with a higher temperature is being pumped out of the transformer, the oil changing device is controlled to pump the insulating oil with a lower temperature in the spare oil tank into the transformer at the oil changing speed. The pumping time is consistent with the pumping time, so that the insulating oil with a lower temperature can effectively cool the transformer.

[0169] The spare oil tank refers to the oil tank used to store spare insulating oil. The spare oil tank is actually the same as the main oil tank, and the two are switched with each other. After the main oil tank is filled with insulating oil, the main oil tank is changed to the spare oil tank, and the spare oil tank is changed to the main oil tank, to facilitate the next replacement of insulating oil.

[0170] Reference Figure 7 The steps of obtaining oil quality detection data of the transformer based on the oil change cycle trigger signal include:

[0171] Step S700: acquiring a circulation process image of the insulating oil based on an oil change cycle trigger signal.

[0172] Among them, after the processing terminal receives the oil change cycle trigger signal, the processing terminal responds to the oil change cycle trigger signal to collect the circulation process image of the insulating oil, providing data support for the subsequent determination of whether the insulating oil has deteriorated.

[0173] The circulation process image refers to the image of the insulating oil circulation process, which is obtained by photographing the insulating oil in the transparent circulation oil pipe with a camera.

[0174] Step S701: performing image recognition analysis on the cycle process image to determine whether there are preset impurity features in the cycle process image.

[0175] After the processing terminal receives the cycle process image, the processing terminal controls the preset impurity recognition model to perform image recognition on the cycle process image, thereby determining whether there are impurity features in the cycle process image, and providing data support for the subsequent determination of the oil quality of the insulating oil. Impurity features refer to features other than insulating oil in the image.

[0176] Step S7011: If it does not exist, the preset normal detection data is defined as the oil quality detection data.

[0177] If the processing terminal determines that there are no impurity features in the cycle process image, it means that there are no impurities in the insulating oil, so the normal detection data is defined as oil quality detection data. The normal detection data refers to data indicating that the oil quality detection result is normal, which is stored in the processing terminal by the operator.

[0178] Step S7012: If it exists, the preset abnormal detection data is defined as oil quality detection data.

[0179] If the processing terminal determines that there are impurity features in the cycle process image, it indicates that there are impurities in the insulating oil, so the abnormal detection data is defined as oil quality detection data. The abnormal detection data refers to data with abnormal oil quality detection results, which are stored in the processing terminal by the operator.

[0180] Based on the same inventive concept, an embodiment of the present application provides a transformer cooling system, comprising:

[0181] An acquisition module is used to acquire a start trigger signal, internal detection temperature, basic circulation speed, internal change temperature, real-time detection load, temperature holding time, oil quality detection data and circulation process images;

[0182] A memory for storing a program of a transformer cooling method;

[0183] The program in the memory can be loaded and executed by the processor to implement a transformer cooling method.

[0184] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0185] An embodiment of the present application provides a computer-readable storage medium storing a computer program that can be loaded by a processor and executed by a transformer cooling method.

[0186] Computer storage media include, for example, various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROM), random access memories (RAM), magnetic disks or optical disks.

[0187] Based on the same inventive concept, an embodiment of the present application provides an intelligent terminal, including a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and execute a transformer cooling method.

[0188] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0189] The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any feature disclosed in this specification (including the abstract and drawings), unless otherwise stated, can be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

Claims

1. A transformer cooling method, characterized in that: include: Obtaining a start trigger signal of the transformer; Acquire the internal detection temperature and basic cycle speed of the transformer based on the start trigger signal; Analyze the internal detection temperature and the preset internal stable temperature to determine the adjustment temperature difference; Determining a speed adjustment factor according to a relationship between an adjusted temperature difference and a preset temperature difference factor; Analyze the speed adjustment factor and the base cycle speed to determine the adjusted cycle speed; Controlling a preset circulating oil pump to circulate preset insulating oil to cool the transformer according to the adjusted circulation speed; The steps of controlling a preset circulating oil pump to circulate a preset insulating oil to cool the transformer according to adjusting the circulation speed include: Control the circulating oil pump to adjust the circulation speed to circulate the insulating oil and obtain the internal temperature change of the transformer; Determine whether the internal change temperature meets the requirements of the internal stable temperature; If it does not meet the requirements, the circulating oil pump is controlled to circulate the insulating oil according to the adjusted circulation speed, and the internal temperature change of the transformer is continuously obtained for circulation judgment; If it meets the requirements, the circulating oil pump is controlled to circulate the insulating oil according to the basic circulation speed; The steps of controlling the circulating oil pump to circulate the insulating oil according to the basic circulation speed include: Control the circulating oil pump to circulate the insulating oil at the basic circulation speed and obtain the real-time detection load of the transformer; Analyze the real-time detection load to determine whether the real-time detection load meets the preset changed load requirement; If it does not meet the requirements, the circulating oil pump continues to be controlled to circulate the insulating oil at the basic circulation speed, and the real-time detection load of the transformer continues to be obtained; If it is in compliance, the updated circulation speed of the circulating oil pump is determined according to the real-time detected load and the preset load-speed relationship, and the updated circulation speed is defined as the basic circulation speed; The circulating oil pump is controlled to circulate the insulating oil at a basic circulation speed.

2. A transformer cooling method according to claim 1, characterized in that: The circulating oil pump includes a vertical circulating oil pump and a horizontal circulating oil pump, and the steps of controlling the circulating oil pump to circulate the insulating oil at a basic circulation speed include: Determine the cooling power according to the basic cycle speed and the preset speed-power relationship; Control the vertical circulation oil pump to pump the insulating oil into the preset heat dissipation device at the basic circulation speed; Control the heat dissipation device to dissipate heat from the insulating oil according to the cooling power, and control the vertical circulation oil pump to push the insulating oil back into the transformer; Determine the horizontal circulation height according to the basic circulation speed and the preset speed-height relationship; Determine the horizontal cycle speed according to the basic cycle speed and the preset speed cycle relationship; The movement of the preset oil pipe on the horizontal circulation oil pump is controlled according to the horizontal circulation height, and the horizontal circulation oil pump is controlled according to the horizontal circulation speed to circulate the insulating oil in the center of the transformer to the outside of the transformer.

3. A transformer cooling method according to claim 1, characterized in that: When the internal temperature change does not meet the requirements of the internal stable temperature, an oil change circulation cooling step is also included, and the specific steps include: Determine the temperature adjustment time according to the adjusted temperature difference and the preset temperature-time relationship; Get the temperature holding time of the transformer; Determine whether the temperature holding time meets the temperature adjustment time requirements; If it meets the requirement, the temperature holding time of the transformer is continuously obtained for cyclic judgment; If it does not meet the requirements, the preset oil change device is controlled to cool the transformer according to the preset oil change cycle trigger signal.

4. A transformer cooling method according to claim 3, characterized in that: The step of controlling a preset oil changing device to cool the transformer according to a preset oil changing cycle trigger signal includes: Obtaining transformer oil quality detection data based on oil change cycle trigger signal; Determine whether the oil quality test data meets the preset requirements of normal oil quality data; If it does not meet the requirements, the transformer is controlled to shut down, and the oil changing device is controlled to change the oil of the transformer according to the preset comprehensive oil change trigger signal; If it meets the requirements, the oil changing device is controlled according to the preset oil changing speed to pump the insulating oil in the transformer into the preset main oil tank for cooling; The oil changing device is controlled according to the oil changing speed to draw the insulating oil in the preset spare oil tank into the transformer to cool the transformer.

5. A transformer cooling method according to claim 4, characterized in that: The steps of obtaining oil quality detection data of the transformer based on the oil change cycle trigger signal include: Acquire a circulation process image of the insulating oil based on an oil change cycle trigger signal; Performing image recognition analysis on the cycle process image to determine whether there are preset impurity features in the cycle process image; If it does not exist, the preset normal detection data is defined as the oil quality detection data; If it exists, the preset abnormal detection data is defined as oil quality detection data.

6. A transformer cooling system, characterized in that: include: An acquisition module, used for acquiring a start trigger signal, an internal detection temperature and a basic cycle speed; A memory for storing a program of a transformer cooling method according to any one of claims 1 to 5; The program in the memory can be loaded and executed by the processor to implement a transformer cooling method as claimed in any one of claims 1 to 5.

7. An intelligent terminal, characterized in that: The invention comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes a transformer cooling method according to any one of claims 1 to 5.

8. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and executes a transformer cooling method according to any one of claims 1 to 5.

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