Fault sensing method and system for heat dissipation component of box transformer substation

Abstract

The invention relates to the technical field of transformer fault sensing, in particular to a fault sensing method and system for a heat dissipation component of a box-type transformer substation. The temperature sensors are arranged at all positions of the box body; the controller packs and sends the real-time temperature value and the sensor number of the temperature sensor sending the real-time temperature value to a cloud server; the cloud server judges the real-time temperature values collected by the temperature sensor, when all the real-time temperature values are increased in the past second preset duration, it is indicated that the temperature in the box transformer substation is continuously increased, heat dissipation components of the box transformer substation have operation faults, for example, the heat dissipation fan does not rotate any more for heat dissipation, and the temperature in the box transformer substation is not increased. The temperature in the box-type transformer substation rises abnormally and continuously due to the fact that the temperature in the box-type transformer substation rises abnormally, so that the cloud server generates early warning information used for expressing that the heat dissipation component of the box-type transformer substation breaks down and sends the early warning information to the monitoring terminal to remind management personnel in time, and therefore it is guaranteed that the heat dissipation component of the box-type transformer substation can be found in time after running breaks down.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer fault perception, and particularly relates to a method and system for perceiving faults of box-type transformer heat dissipation components. Background Art

[0002] A box-type transformer (referred to as "box transformer" for short), that is, a prefabricated substation or prefabricated transformer substation; that is, a technical solution in which high-voltage switchgear, a transformer, and low-voltage power distribution devices are combined according to a certain wiring scheme and installed in a box. Box transformers are particularly suitable for urban network construction and renovation and are a brand-new type of substation that has emerged after civil substations. Since the advent of box transformers, they have developed extremely rapidly; with the continuous renewal and renovation of urban distribution networks, box transformers have now been widely used.

[0003] A large amount of heat is generated during the operation of box transformers. In order to ensure the normal and stable operation of box transformers, heat dissipation of box transformers is required; currently, there are various heat dissipation methods for box transformers, mainly based on air-cooled heat dissipation methods, that is, ventilation and heat dissipation are carried out between the inside of the box transformer and the outside by setting up heat dissipation fans; however, currently, faults of the heat dissipation components (such as fans or water-cooled pipes) of box transformers cannot be detected in time after they occur, resulting in the box transformer being in a high-temperature state for a long time and easily causing faults in the electrical equipment inside the box transformer. Summary of the Invention

[0004] The main purpose of the present invention is to provide a method and system for perceiving faults of box-type transformer heat dissipation components, aiming to solve the problem that faults of the current heat dissipation components of box transformers cannot be detected in time after they occur.

[0005] The technical solution proposed by the present invention is as follows:

[0006] A method for perceiving faults of box-type transformer heat dissipation components, which is applied to a system for perceiving faults of box-type transformer heat dissipation components; the system includes a controller, a temperature sensor, a cloud server, and a monitoring terminal; both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of temperature sensors is multiple; both the temperature sensor and the controller are arranged in the box transformer; the temperature sensor is communicatively connected to the controller; the temperature sensor is correspondingly provided with a unique sensor number; the monitoring terminal includes a display module; the method includes:

[0007] The controller acquires the real-time temperature values collected by the temperature sensors at various locations inside the box transformer, wherein the sampling period of the temperature sensor is a first preset duration;

[0008] The controller packs and sends the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values to the cloud server;

[0009] When all the real-time temperature values increase within the past second preset duration, the cloud server generates a warning message indicating that the heat dissipation component of the box substation has failed, and sends the warning message to the monitoring terminal, where the second preset duration is greater than the first preset duration;

[0010] The monitoring terminal displays the warning message through the display module.

[0011] Preferably, when all the real-time temperature values increase within the past second preset duration, the cloud server generates a warning message indicating that the heat dissipation component of the box substation has failed, and sends the warning message to the monitoring terminal, including:

[0012] The cloud server determines the number of real-time temperature values corresponding to each temperature sensor within the past second preset duration, and marks it as the first target number;

[0013] The cloud server determines the number of the temperature sensors arranged in the box substation, and marks it as the second target number;

[0014] The cloud server calculates the average temperature increase value of each temperature sensor inside the box substation within the past second preset duration based on the first target number, the second target number, and the real-time temperature value:

[0015]

[0016] where T P is the average temperature increase value; T i,j is the jth real-time temperature value collected by the ith temperature sensor inside the box substation within the past second preset duration; 1 ≤ i ≤ N, N is the second target number; 1 ≤ j ≤ M, M is the first target number; T 1,M is the latest real-time temperature value collected by the first temperature sensor inside the box substation within the past second preset duration.

[0017] Preferably, after the cloud server calculates the average temperature increase value of each temperature sensor inside the box substation within the past second preset duration based on the first target number, the second target number, and the real-time temperature value, it further includes:

[0018] The cloud server determines whether the first condition is satisfied, where the first condition is: the average temperature increase value is greater than the first preset threshold;

[0019] If so, the cloud server determines whether the following formula is satisfied:

[0020] T i,j+1 -T i,j >0,

[0021] Where 1 ≤ i ≤ N, N is the number of second targets; 1 ≤ j ≤ M, M is the number of first targets;

[0022] If satisfied, the cloud server determines that all the real-time temperature values have increased in the past second preset duration.

[0023] Preferably, the box-type substation is provided with a cooling fan for ventilation; there are 4 temperature sensors arranged inside the box-type substation; one of the temperature sensors is arranged at the bottom inside the box-type substation; one of the temperature sensors is arranged in the middle inside the box-type substation; one of the temperature sensors is arranged at the top inside the box-type substation; one of the temperature sensors is arranged near the cooling fan.

[0024] Preferably, the controller packs and sends the real-time temperature value and the sensor number of the temperature sensor that sends the real-time temperature value to the cloud server. After that, it further includes:

[0025] The cloud server marks the real-time temperature value sent by the temperature sensor arranged at the bottom inside the box-type substation as the first temperature value;

[0026] The cloud server marks the real-time temperature value sent by the temperature sensor arranged in the middle inside the box-type substation as the second temperature value;

[0027] The cloud server marks the real-time temperature value sent by the temperature sensor arranged at the top inside the box-type substation as the third temperature value;

[0028] The cloud server marks the real-time temperature value sent by the temperature sensor arranged near the cooling fan as the fourth temperature value;

[0029] The cloud server determines whether the heat dissipation components of the box-type substation are faulty based on the first temperature value, the second temperature value, the third temperature value, and the fourth temperature value in the past third preset duration, where the third preset duration is greater than the second preset duration.

[0030] Preferably, the cloud server determines whether the heat dissipation components of the box-type substation are faulty based on the first temperature value, the second temperature value, the third temperature value, and the fourth temperature value in the past third preset duration, including:

[0031] The cloud server obtains the average value of the first temperature value in the past third preset duration and marks it as the first average value, obtains the average value of the second temperature value in the past third preset duration and marks it as the second average value, obtains the average value of the third temperature value in the past third preset duration and marks it as the third average value, and obtains the average value of the fourth temperature value in the past third preset duration and marks it as the fourth average value;

[0032] The cloud server determines whether the second condition is satisfied, where the second condition is that the first average value is less than the second average value, the second average value is less than the third average value, and the fourth average value is less than the first average value;

[0033] If so, it is determined that the heat dissipation component of the box substation has no fault;

[0034] If not, it is determined that the heat dissipation component of the box substation has a fault.

[0035] Preferably, one temperature sensor is arranged outside the box substation; the cloud server obtains the average value of the first temperature value within the past third preset time period and marks it as the first average value, obtains the average value of the second temperature value within the past third preset time period and marks it as the second average value, obtains the average value of the third temperature value within the past third preset time period and marks it as the third average value, obtains the average value of the fourth temperature value within the past third preset time period and marks it as the fourth average value. After that, it further includes:

[0036] The cloud server adds the first average value, the second average value, the third average value, and the fourth average value and then takes the average value to obtain the internal average temperature value;

[0037] The cloud server obtains the average value of the real-time temperature value sent by the temperature sensor arranged outside the box substation within the past third preset time period and marks it as the external average temperature value;

[0038] The cloud server determines whether the third condition is satisfied, where the third condition is that the internal average temperature value is greater than the external average temperature value, and the difference between the internal average temperature value and the external average temperature value is greater than the second preset threshold;

[0039] If so, it is determined that the heat dissipation component of the box substation has a fault;

[0040] If not, it is determined that the heat dissipation component of the box substation has no fault.

[0041] Preferably, the system further includes a rotational speed sensor communicatively connected to the controller; the rotational speed sensor is used to detect the rotational speed of the heat dissipation fan; the method further includes:

[0042] The controller obtains the real-time rotational speed of the heat dissipation fan collected by the rotational speed sensor;

[0043] The controller sends the real-time rotational speed to the cloud server;

[0044] The cloud server determines whether the heat dissipation component of the box substation has a fault based on the real-time rotational speed;

[0045] If so, the cloud server generates a warning message.

[0046] Preferably, the cloud server determines whether there is a fault in the heat dissipation component of the box transformer based on the real-time rotation speed, including:

[0047] The cloud server determines whether the following conditions are met: the real-time rotation speed is 0 within the fourth preset time period in the past;

[0048] If so, the cloud server determines that there is a fault in the heat dissipation component of the box transformer;

[0049] If not, the cloud server determines that there is no fault in the heat dissipation component of the box transformer.

[0050] The present invention also provides a fault perception system for the heat dissipation component of a box transformer, which applies the fault perception method for the heat dissipation component of a box transformer; the system includes a controller, a temperature sensor, a cloud server and a monitoring terminal; both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of the temperature sensors is multiple; both the temperature sensors and the controller are arranged in the box transformer; the temperature sensors are communicatively connected to the controller; the temperature sensors are respectively provided with unique sensor numbers; the monitoring terminal includes a display module.

[0051] Through the above technical solutions, the following beneficial effects can be achieved:

[0052] The fault perception method for the heat dissipation component of the box transformer proposed by the present invention can solve the problem that the heat dissipation component of the current box transformer cannot be detected in time after a fault occurs during operation; in this solution, temperature sensors are arranged at various parts of the box body; the controller obtains the real-time temperature values collected by the temperature sensors at various parts inside the box transformer; the controller packs the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values and sends them to the cloud server; the cloud server judges the real-time temperature values collected by the temperature sensors. When all the real-time temperature values increase within the second preset time period in the past, it indicates that the temperature inside the box transformer continues to rise, which means that there is a running fault in the heat dissipation component of the box transformer. For example, the heat dissipation fan no longer rotates for heat dissipation, resulting in abnormal continuous increase in the temperature inside the box transformer. Therefore, the cloud server generates a warning message indicating that there is a fault in the heat dissipation component of the box transformer and sends the warning message to the monitoring terminal to timely remind the management personnel, so as to ensure that the heat dissipation component of the box transformer can be detected in time after a fault occurs during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0054] Figure 1 This is a flowchart of the steps of the first embodiment of a method for fault perception of a box-type substation heat dissipation component proposed by the present invention. Specific implementation manner

[0055] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0056] The present invention proposes a method and system for fault perception of a box-type substation heat dissipation component.

[0057] As shown in the attached Figure 1 In the first embodiment of a method for fault perception of a box-type substation heat dissipation component proposed by the present invention, this method is applied to a box-type substation heat dissipation component fault perception system; the system includes a controller, a temperature sensor, a cloud server, and a monitoring terminal (the monitoring terminal is used by management personnel, such as a computer terminal); both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of temperature sensors is multiple; both the temperature sensors and the controller are arranged in the box-type substation; the temperature sensors are communicatively connected to the controller; the temperature sensors are respectively provided with a unique sensor number; the monitoring terminal includes a display module (such as a display screen); this embodiment includes the following steps:

[0058] Step S110: The controller obtains the real-time temperature values collected by the temperature sensors at various locations inside the box-type substation, where the sampling period of the temperature sensors is a first preset duration.

[0059] Specifically, the first preset duration is preferably 10 milliseconds here.

[0060] Step S120: The controller packs and sends the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values to the cloud server.

[0061] Specifically, the controller and the cloud server are communicatively connected through a wireless communication module (such as a GMS communication module).

[0062] Step S130: When all the real-time temperature values increase within a second preset duration (such as 60 seconds) in the past, the cloud server generates a warning message indicating that a heat dissipation component of the box-type substation (such as a heat dissipation fan arranged in the box-type substation) has a fault, and sends the warning message to the monitoring terminal, where the second preset duration is greater than the first preset duration.

[0063] Step S140: The monitoring terminal displays the warning message through the display module.

[0064] The fault perception method for the box-type substation heat dissipation component proposed by the present invention can solve the problem that the current heat dissipation components of the box-type substation cannot be detected in time after a failure occurs during operation; in this solution, temperature sensors are arranged everywhere in the box body; the controller obtains the real-time temperature values collected by the temperature sensors everywhere inside the box-type substation; the controller packs and sends the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values to the cloud server; the cloud server judges the real-time temperature values collected by the temperature sensors. When all the real-time temperature values increase within the second preset time period in the past, it indicates that the temperature inside the box-type substation is continuously rising, which means that the heat dissipation components of the box-type substation have a running failure. For example, the heat dissipation fan no longer rotates for heat dissipation, resulting in abnormal continuous increase of the temperature inside the box-type substation. Therefore, the cloud server generates a warning message indicating that the heat dissipation components of the box-type substation have failed and sends the warning message to the monitoring terminal to timely remind the management personnel, so as to ensure that the heat dissipation components of the box-type substation can be detected in time after a failure occurs during operation.

[0065] In the second embodiment of a fault perception method for the box-type substation heat dissipation component proposed by the present invention, based on the first embodiment, step S130 includes the following steps:

[0066] Step S210: The cloud server determines the number of real-time temperature values corresponding to each temperature sensor within the second preset time period in the past and marks it as the first target number.

[0067] Specifically, since the second preset time period is 60 seconds and the sampling period of the temperature sensor is 10 milliseconds, the first target number is 6000.

[0068] Step S220: The cloud server determines the number of the temperature sensors arranged inside the box-type substation and marks it as the second target number.

[0069] Specifically, in this embodiment, there are 4 temperature sensors arranged inside the box-type substation, so the second target number is 4.

[0070] Step S230: The cloud server calculates the average temperature growth value of each temperature sensor inside the box-type substation within the second preset time period in the past based on the first target number, the second target number, and the real-time temperature value:

[0071]

[0072] where T P is the average temperature growth value; T i,j is the jth real-time temperature value collected by the ith temperature sensor inside the box-type substation within the second preset time period in the past; 1 ≤ i ≤ N, N is the second target number; 1 ≤ j ≤ M, M is the first target number; T 1,Mis the latest real-time temperature value collected by the first temperature sensor inside the box-type substation within the second preset time period in the past.

[0073] Specifically, the average temperature increase value in this embodiment can reflect the temperature change of the box-type substation within the second preset time period in the past. T P is a positive value, indicating that the temperature inside the box-type substation is continuously rising, and the larger the absolute value of T P , the faster the temperature inside the box-type substation rises.

[0074] In the third embodiment of a method for detecting faults in the heat dissipation components of a box-type substation proposed by the present invention, based on the second embodiment, after step S230, the following steps are further included:

[0075] Step S310: The cloud server determines whether the first condition is satisfied, where the first condition is that the average temperature increase value is greater than a first preset threshold (for example, 5°C).

[0076] Specifically, if the first condition is satisfied, it indicates that the temperature inside the box-type substation rises relatively fast.

[0077] If so, step S320 is executed: The cloud server determines whether the following formula is satisfied:

[0078] T i,j+1 -T i,j >0,

[0079] In the formula, 1 ≤ i ≤ N, where N is the second target quantity; 1 ≤ j ≤ M, where M is the first target quantity.

[0080] Specifically, if the above formula is satisfied, it indicates that the temperature inside the box-type substation is continuously rising irreversibly, and it can be inferred that there is a fault in the heat dissipation components inside the box-type substation.

[0081] Step S330: If satisfied, the cloud server determines that all the real-time temperature values have increased within the second preset time period in the past.

[0082] In the fourth embodiment of a method for detecting faults in the heat dissipation components of a box-type substation proposed by the present invention, based on the first embodiment, the box-type substation is provided with a heat dissipation fan for ventilation; there are 4 temperature sensors inside the box-type substation; one of the temperature sensors is arranged at the bottom inside the box-type substation; one of the temperature sensors is arranged in the middle inside the box-type substation; one of the temperature sensors is arranged at the top inside the box-type substation; one of the temperature sensors is arranged near the heat dissipation fan.

[0083] In the fifth embodiment of a method for detecting faults in the heat dissipation components of a box-type substation proposed by the present invention, based on the fourth embodiment, after step S120, the following steps are further included:

[0084] Step S510: The cloud server marks the real-time temperature value sent by the temperature sensor set at the bottom inside the box substation as the first temperature value.

[0085] Step S520: The cloud server marks the real-time temperature value sent by the temperature sensor set in the middle inside the box substation as the second temperature value.

[0086] Step S530: The cloud server marks the real-time temperature value sent by the temperature sensor set at the top inside the box substation as the third temperature value.

[0087] Step S540: The cloud server marks the real-time temperature value sent by the temperature sensor set near the cooling fan as the fourth temperature value.

[0088] Step S550: The cloud server determines whether there is a fault in the heat dissipation component of the box substation based on the first temperature value, the second temperature value, the third temperature value, and the fourth temperature value in the past third preset duration (e.g., 1 hour), where the third preset duration is greater than the second preset duration.

[0089] In the sixth embodiment of a method for sensing faults in the heat dissipation component of a box substation proposed by the present invention, based on the fifth embodiment, step S550 includes the following steps:

[0090] Step S610: The cloud server obtains the average value of the first temperature value in the past third preset duration and marks it as the first average value, obtains the average value of the second temperature value in the past third preset duration and marks it as the second average value, obtains the average value of the third temperature value in the past third preset duration and marks it as the third average value, and obtains the average value of the fourth temperature value in the past third preset duration and marks it as the fourth average value.

[0091] Step S620: The cloud server determines whether the second condition is satisfied, where the second condition is that the first average value is less than the second average value, the second average value is less than the third average value, and the fourth average value is less than the first average value.

[0092] Specifically, when the electrical equipment in the box substation generates heat, the hot air rises, causing the temperature in the lower part of the box substation to be lower than that in the upper part, and when the cooling fan is working normally, the temperature near the cooling fan will be lower than that in other areas of the box substation, that is, when the second condition is satisfied.

[0093] If yes, execute step S630: Determine that there is no fault in the heat dissipation component of the box substation.

[0094] If not, execute step S640: Determine that there is a fault in the heat dissipation component of the box substation.

[0095] Specifically, when the second condition is met, it indicates that the heat dissipation component of the box-type substation is working properly without any faults.

[0096] In the seventh embodiment of a method for detecting faults in the heat dissipation component of a box-type substation proposed by the present invention, based on the sixth embodiment, one of the temperature sensors is provided outside the box-type substation; after step S610, the following steps are further included:

[0097] Step S710: The cloud server adds the first average value, the second average value, the third average value, and the fourth average value and then takes the average to obtain the internal average temperature value.

[0098] Specifically, the internal average temperature value here can reflect the overall temperature situation inside the box-type substation.

[0099] Step S720: The cloud server obtains the average value of the real-time temperature values sent by the temperature sensor provided outside the box-type substation within the past third preset time period and marks it as the external average temperature value.

[0100] Specifically, the internal average temperature value here can reflect the temperature situation outside the box-type substation.

[0101] Step S730: The cloud server determines whether the third condition is met, where the third condition is that the internal average temperature value is greater than the external average temperature value, and the difference between the internal average temperature value and the external average temperature value is greater than the second preset threshold (for example, 3 degrees Celsius).

[0102] Specifically, under normal circumstances, under the action of the heat dissipation component, the temperature inside the box-type substation will be lower than the outside temperature. Therefore, if the internal average temperature value is greater than the external average temperature value and the difference between the internal average temperature value and the external average temperature value is greater than the second preset threshold, it indicates that the heat dissipation component of the box-type substation has a fault.

[0103] If so, execute step S740: Determine that the heat dissipation component of the box-type substation has a fault.

[0104] If not, execute step S750: Determine that the heat dissipation component of the box-type substation has no fault.

[0105] In the eighth embodiment of a method for detecting faults in the heat dissipation component of a box-type substation proposed by the present invention, based on the fourth embodiment, the system further includes a rotational speed sensor communicatively connected to the controller; the rotational speed sensor is used to detect the rotational speed of the cooling fan; the following steps are further included in this embodiment:

[0106] Step S810: The controller obtains the real-time rotational speed of the cooling fan collected by the rotational speed sensor.

[0107] Step S820: The controller sends the real-time rotational speed to the cloud server.

[0108] Step S830: The cloud server determines whether a failure occurs in the heat dissipation component of the box substation based on the real-time rotational speed.

[0109] If so, execute Step S840: The cloud server generates a warning message.

[0110] In the ninth embodiment of a method for sensing faults in the heat dissipation component of a box substation proposed by the present invention, based on the eighth embodiment, Step S830 includes the following steps:

[0111] Step S910: The cloud server determines whether the following conditions are satisfied: The real-time rotational speed is 0 within the fourth preset time period (for example, 10 minutes) in the past.

[0112] If so, execute Step S920: The cloud server determines that a failure occurs in the heat dissipation component of the box substation.

[0113] If not, execute Step S930: The cloud server determines that no failure occurs in the heat dissipation component of the box substation.

[0114] Specifically, if the real-time rotational speed is always 0 within the fourth preset time period in the past, it indicates that the heat dissipation fan has failed (not rotating).

[0115] The present invention also proposes a system for sensing faults in the heat dissipation component of a box substation, which applies the method for sensing faults in the heat dissipation component of a box substation; the system includes a controller, a temperature sensor, a cloud server, and a monitoring terminal; both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of temperature sensors is multiple; both the temperature sensor and the controller are arranged in the box substation; the temperature sensor is communicatively connected to the controller; the temperature sensor is correspondingly provided with a unique sensor number; the monitoring terminal includes a display module.

[0116] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages and disadvantages of the embodiments.

[0117] The embodiments of the present invention have been described above in conjunction with the accompanying drawings. However, the present invention is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present invention, those of ordinary skill in the art can also make many forms without departing from the spirit and scope protected by the claims of the present invention. These all fall within the protection scope of the present invention.

Claims

1. A method for fault perception of a box-type substation heat dissipation component, characterized in that Applied to the fault perception system of the heat dissipation components of the box-type substation; the system includes a controller, a temperature sensor, a cloud server, and a monitoring terminal; both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of the temperature sensors is multiple; both the temperature sensors and the controller are arranged in the box-type substation; the temperature sensors are communicatively connected to the controller; the temperature sensors are correspondingly provided with unique sensor numbers; the monitoring terminal includes a display module; the method includes: The controller acquires the real-time temperature values collected by the temperature sensors at various locations inside the box-type substation, wherein the sampling period of the temperature sensors is a first preset duration; The controller packs and sends the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values to the cloud server; When all the real-time temperature values increase within a past second preset duration, the cloud server generates a warning message indicating that the heat dissipation components of the box-type substation have failed, and sends the warning message to the monitoring terminal, wherein the second preset duration is greater than the first preset duration; The monitoring terminal displays the warning message through the display module.

2. The fault perception method for a box-type substation heat dissipation component according to claim 1, characterized in that The step that when all the real-time temperature values increase within a past second preset duration, the cloud server generates a warning message indicating that the heat dissipation components of the box-type substation have failed, and sends the warning message to the monitoring terminal includes: The cloud server determines the number of real-time temperature values corresponding to each temperature sensor within the past second preset duration, and marks it as a first target number; The cloud server determines the number of the temperature sensors arranged in the box-type substation, and marks it as a second target number; The cloud server calculates the average temperature increase value of each temperature sensor inside the box-type substation within the past second preset duration based on the first target number, the second target number, and the real-time temperature values: where, T P is the average temperature increase value; T i,j is the j-th real-time temperature value collected by the i-th temperature sensor inside the box-type substation in the past second preset duration; 1 ≤ i ≤ N, where N is the second target quantity; 1 ≤ j ≤ M, where M is the first target quantity; T 1,M is the latest real-time temperature value collected by the 1st temperature sensor inside the box-type substation in the past second preset duration.

3. A method for fault perception of a box-type transformer cooling component according to claim 2, characterized in that, After the cloud server calculates the average temperature increase value of each temperature sensor inside the box-type substation within the past second preset duration based on the first target number, the second target number, and the real-time temperature values, it further includes: The cloud server determines whether a first condition is satisfied, wherein the first condition is: the average temperature increase value is greater than a first preset threshold; If so, the cloud server determines whether the following formula is satisfied: T i,j+1 -T i,j > 0, In the formula, 1≤i≤N, N is the second target number; 1≤j≤M, M is the first target number; If it is satisfied, the cloud server determines that all the real-time temperature values increase within the past second preset duration.

4. A method for fault perception of a box-type substation heat dissipation component according to claim 1, characterized in that, The box-type substation is provided with a heat dissipation fan for ventilation; there are 4 temperature sensors arranged inside the box-type substation; 1 of the temperature sensors is arranged at the bottom inside the box-type substation; 1 of the temperature sensors is arranged in the middle inside the box-type substation; 1 of the temperature sensors is arranged at the top inside the box-type substation; 1 of the temperature sensors is arranged near the heat dissipation fan.

5. A method for fault perception of a box-type transformer cooling component according to claim 4, characterized in that, After the controller packs and sends the real-time temperature values and the sensor numbers of the temperature sensors that send the real-time temperature values to the cloud server, it further includes: The cloud server marks the real-time temperature value sent by the temperature sensor set at the bottom inside the box substation as the first temperature value; The cloud server marks the real-time temperature value sent by the temperature sensor set in the middle inside the box substation as the second temperature value; The cloud server marks the real-time temperature value sent by the temperature sensor set at the top inside the box substation as the third temperature value; The cloud server marks the real-time temperature value sent by the temperature sensor set near the cooling fan as the fourth temperature value; The cloud server determines whether there is a fault in the heat dissipation component of the box substation based on the first temperature value, the second temperature value, the third temperature value, and the fourth temperature value in the past third preset duration, where the third preset duration is greater than the second preset duration.

6. A method for fault perception of a box-type substation heat dissipation component according to claim 5, characterized in that The cloud server determines whether there is a fault in the heat dissipation component of the box substation based on the first temperature value, the second temperature value, the third temperature value, and the fourth temperature value in the past third preset duration, including: The cloud server obtains the average value of the first temperature value in the past third preset duration and marks it as the first average value, obtains the average value of the second temperature value in the past third preset duration and marks it as the second average value, obtains the average value of the third temperature value in the past third preset duration and marks it as the third average value, and obtains the average value of the fourth temperature value in the past third preset duration and marks it as the fourth average value; The cloud server determines whether the second condition is satisfied, where the second condition is: the first average value is less than the second average value, and the second average value is less than the third average value, and the fourth average value is less than the first average value; If so, it is determined that there is no fault in the heat dissipation component of the box substation; If not, it is determined that there is a fault in the heat dissipation component of the box substation.

7. A method for fault perception of a box-type transformer cooling component according to claim 6, characterized in that One temperature sensor is set outside the box substation; after the cloud server obtains the average value of the first temperature value in the past third preset duration and marks it as the first average value, obtains the average value of the second temperature value in the past third preset duration and marks it as the second average value, obtains the average value of the third temperature value in the past third preset duration and marks it as the third average value, and obtains the average value of the fourth temperature value in the past third preset duration and marks it as the fourth average value, it further includes: The cloud server adds the first average value, the second average value, the third average value, and the fourth average value and then takes the average value to obtain the internal average temperature value; The cloud server obtains the average value of the real-time temperature value sent by the temperature sensor set outside the box substation in the past third preset duration and marks it as the external average temperature value; The cloud server determines whether the third condition is satisfied, where the third condition is: the internal average temperature value is greater than the external average temperature value, and the difference between the internal average temperature value and the external average temperature value is greater than the second preset threshold; If so, it is determined that there is a fault in the heat dissipation component of the box substation; If not, it is determined that there is no fault in the heat dissipation component of the box substation.

8. A method for fault perception of a box-type transformer cooling component according to claim 4, characterized in that The system further includes a rotational speed sensor communicatively connected to the controller; the rotational speed sensor is configured to detect the rotational speed of the cooling fan; the method further includes: The controller obtains the real-time rotational speed of the cooling fan collected by the rotational speed sensor; The controller sends the real-time rotational speed to the cloud server; The cloud server determines whether there is a fault in the heat dissipation component of the box substation based on the real-time rotational speed; If so, the cloud server generates a warning message.

9. A method for fault perception of a box-type transformer cooling component according to claim 8, characterized in that, The cloud server determines whether there is a fault in the heat dissipation component of the box substation based on the real-time rotational speed, including: The cloud server determines whether the following condition is satisfied: the real-time rotational speed has been 0 within the fourth preset time period in the past; If so, the cloud server determines that there is a fault in the heat dissipation component of the box substation; If not, the cloud server determines that there is no fault in the heat dissipation component of the box substation.

10. A fault perception system for a box-type transformer cooling component, characterized in that, Apply the method for sensing faults in the heat dissipation components of the box substation according to any one of claims 1-9; the system includes a controller, a temperature sensor, a cloud server and a monitoring terminal; both the controller and the monitoring terminal are communicatively connected to the cloud server; the number of the temperature sensors is multiple; both the temperature sensors and the controller are arranged in the box substation; the temperature sensors are communicatively connected to the controller; the temperature sensors are respectively provided with a unique sensor number; the monitoring terminal includes a display module.

Images