A high-voltage inverter temperature abnormality early warning system and method

Abstract

The present invention provides a high-voltage inverter temperature anomaly warning system and method, which relates to the field of electronic technology, including: an edge data collector, which is used to continuously collect and monitor the working temperature of a high-voltage inverter and the ambient temperature of the environment in which it is located, and upload them to a cloud-based remote intelligent operation and maintenance platform; the cloud-based remote intelligent operation and maintenance platform reads all the working temperatures and the ambient temperatures of the day at preset time intervals, and processes them to obtain a temperature rise value, and saves the temperature rise value; the cloud-based remote intelligent operation and maintenance platform reads each of the temperature rise values ​​of a preset number of days before the day and processes them to obtain an average temperature rise value, and each time the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold and continues for a preset number of times, a temperature anomaly warning signal is generated and sent to the corresponding mobile terminal; the beneficial effect is to give users sufficient time to carry out corresponding processing, prevent unplanned shutdowns of production enterprises, and reduce user losses.

Description

Technical Field

[0001] The present invention relates to the field of electronic technology, and in particular to a high-voltage inverter temperature abnormality early warning system and method. Background Art

[0002] High-voltage inverters are energy control devices that use the on-off function of high-voltage, high-current power electronic semiconductor devices to convert industrial frequency power into power at any frequency. However, because high-voltage inverters contain high-power electronic components, they are easily affected by operating temperature and ambient temperature. When the temperature exceeds the limit, the life of the inverter will be reduced, and it may even be damaged instantly, causing unplanned downtime of the production line where it is located.

[0003] The current high-voltage inverter has limited data storage space, so over-temperature judgment can only be made based on the real-time temperature inside a single inverter. Setting the limit value too high or too low is unreliable. Setting the limit value too high will result in shutdown due to lack of timely processing, while setting the limit value too low will result in frequent alarms and waste of manpower. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a high-voltage inverter temperature abnormality early warning system, comprising:

[0005] An edge data collector, used for continuously collecting and uploading the operating temperature of a high-voltage frequency converter and the ambient temperature of the environment where the high-voltage frequency converter is located;

[0006] A cloud-based remote intelligent operation and maintenance platform is connected to the edge data collector and at least one mobile terminal, and the cloud-based remote intelligent operation and maintenance platform includes:

[0007] A database, used to continuously receive and store the uploaded working temperature and ambient temperature;

[0008] a data processing module, connected to the database, for reading all the working temperatures and the ambient temperatures of the day at intervals of a preset time period, obtaining a temperature rise value representing the difference between the working temperature and the ambient temperature according to all the read working temperatures and the ambient temperatures, and saving the temperature rise value in the database;

[0009] A data comparison module is respectively connected to the data processing module and the database, and is used to read the temperature rise values ​​of a preset number of days before the current day from the database and process them to obtain an average temperature rise value, and then compare the temperature rise value with the average temperature rise value, and each time the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold and continues for a preset number of times, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal for operation and maintenance personnel to view and process.

[0010] Preferably, the data processing module includes:

[0011] A first processing unit is used to read all the working temperatures and the ambient temperatures of the day at every preset time period, and respectively calculate the average value of each working temperature to obtain an average working temperature value, and calculate the average value of each ambient temperature to obtain an average ambient temperature value;

[0012] The second processing unit is connected to the first processing unit and is used to calculate the difference between the average working temperature and the average ambient temperature as the temperature rise value, and save the temperature rise value in the database.

[0013] Preferably, the data comparison module includes:

[0014] A first calculation unit, configured to read the temperature rise values ​​of the preset number of days before the current day from the database, and calculate the average of the temperature rise values ​​to obtain the average temperature rise value;

[0015] a first comparison unit, connected to the first calculation unit, for comparing the temperature rise value with the average temperature rise value, and performing a count once when the temperature rise value is greater than the average temperature rise value and the difference is greater than the threshold value, and storing the count result in the database, and clearing the corresponding count result in the database when the temperature rise value is not greater than the average temperature rise value or the difference is not greater than the threshold value;

[0016] The second comparison unit is connected to the first comparison unit, and is used to read the counting result from the database after the first comparison unit counts each time, and when the counting result is greater than the preset number of times, generate the temperature abnormality warning signal and send it to the corresponding mobile terminal for operation and maintenance personnel to view and process.

[0017] Preferably, the threshold is 1.

[0018] Preferably, the preset number of times is 3.

[0019] Preferably, the preset number of days is 7 days.

[0020] Preferably, a wireless connection is established between the edge data collector and the cloud-based remote intelligent operation and maintenance platform via a 4G or 5G network.

[0021] The present invention also provides a high-voltage inverter temperature anomaly early warning method, which is applied to the above-mentioned high-voltage inverter temperature anomaly early warning system. The high-voltage inverter temperature anomaly early warning method comprises:

[0022] Step S1, the high-voltage inverter temperature abnormality early warning system continuously collects and stores the operating temperature of a monitored high-voltage inverter and the ambient temperature of the environment where the high-voltage inverter is located;

[0023] Step S2, the high-voltage inverter temperature abnormality warning system reads all the working temperatures and the ambient temperatures of the day at a preset time period, obtains a temperature rise value representing the difference between the working temperature and the ambient temperature according to all the read working temperatures and the ambient temperatures, and saves the value;

[0024] Step S3, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of a preset number of days before the current day and processes them to obtain an average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold value and lasts for a preset number of times:

[0025] If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal for operation and maintenance personnel to check and process;

[0026] If not, return to step S2.

[0027] Preferably, in the high-voltage inverter temperature abnormality early warning method, step S2 comprises:

[0028] Step S21, the high-voltage inverter temperature abnormality warning system reads all the working temperatures and the ambient temperatures of the day every preset time period, and calculates the average value of each working temperature to obtain an average working temperature value, and calculates the average value of each ambient temperature to obtain an average ambient temperature value;

[0029] Step S22: the high-voltage inverter temperature anomaly warning system calculates the difference between the average working temperature and the average ambient temperature as the temperature rise value and saves it.

[0030] Preferably, step S3 comprises:

[0031] Step S31, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of the preset number of days before the current day, and calculates the average value of the temperature rise values ​​to obtain the average temperature rise value;

[0032] Step S32, the high-voltage inverter temperature abnormality warning system compares the temperature rise value with the average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than the threshold value:

[0033] If yes, count once and save the count result, then go to step S33;

[0034] If not, the counting result is reset to zero, and then the process returns to step S31;

[0035] Step S33, the high-voltage inverter temperature abnormality warning system reads the counting result and determines whether the counting result is greater than the preset number of times:

[0036] If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal for operation and maintenance personnel to check and process;

[0037] If not, return to step S2.

[0038] The above technical solution has the following advantages or beneficial effects:

[0039] 1) When the actual working temperature is low, the abnormal temperature rise of the high-voltage inverter can be discovered early, giving users enough time to deal with it, preventing unplanned shutdown of the production enterprise and reducing user losses;

[0040] 2) Avoid frequent alarms caused by short-term increase in load and short-term increase in temperature, saving manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 The structure diagram of a high-voltage inverter temperature abnormality warning system in a preferred embodiment of the present invention;

[0042] Figure 2 It is a flow chart of a method for early warning of abnormal temperature rise of a high-voltage frequency converter in a preferred embodiment of the present invention;

[0043] Figure 3 Schematic diagram of a sub-process of step S2 in a preferred embodiment of the present invention;

[0044] Figure 4 This is a schematic diagram of a sub-process of step S3 in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0045] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the gist of the present invention.

[0046] In a preferred embodiment of the present invention, based on the above problems existing in the prior art, a high-voltage inverter temperature abnormality warning system is provided. Figure 1 As shown, including:

[0047] The edge data collector 1 is used to continuously collect and upload the operating temperature of a high-voltage inverter 2 and the ambient temperature of the environment where the high-voltage inverter 2 is located;

[0048] The cloud-based remote intelligent operation and maintenance platform 3 is connected to the edge data collector 1 and at least one mobile terminal 4, and the cloud-based remote intelligent operation and maintenance platform 3 includes:

[0049] Database 31, used to continuously receive and store the uploaded working temperature and ambient temperature;

[0050] The data processing module 32 is connected to the database 31 and is used to read all the working temperatures and ambient temperatures of the day at a preset time interval, obtain a temperature rise value representing the difference between the working temperature and the ambient temperature according to all the read working temperatures and ambient temperatures, and save the temperature rise value in the database;

[0051] The data comparison module 33 is connected to the data processing module 32 and the database 31 respectively, and is used to read the temperature rise values ​​of a preset number of days before the current day from the database 31 and process them to obtain an average temperature rise value, and then compare the temperature rise value with the average temperature rise value, and each time the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold and continues for a preset number of times, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal 4 for operation and maintenance personnel to view and process.

[0052] Specifically, in this embodiment, the above-mentioned edge data collector 1 may include two sensors, one of which is arranged inside the high-voltage inverter 2, and the other is arranged outside the workbench where the high-frequency transformer 2 is placed, which are used to detect the operating temperature and ambient temperature of the high-voltage inverter 2 respectively.

[0053] Preferably, a wireless connection is established between the edge data collector 1 and the cloud-based remote intelligent operation and maintenance platform 3 via a 4G or 5G network, and the collected and monitored operating temperature of the high-voltage inverter 2 and the ambient temperature of the environment in which the high-voltage inverter 2 is located are continuously transmitted to the database 31, and then the data processing module 32 retrieves the data from the database 31 for processing.

[0054] In a preferred embodiment of the present invention, the data processing module 32 includes:

[0055] The first processing unit 321 is used to read all working temperatures and ambient temperatures of the day at every preset time period, and respectively calculate the average value of each working temperature to obtain an average working temperature value, and calculate the average value of each ambient temperature to obtain an average ambient temperature value;

[0056] The second processing unit 322 is connected to the first processing unit 321 and is used to calculate the difference between the average working temperature and the average ambient temperature as a temperature rise value, and save the temperature rise value in the database 31 .

[0057] Specifically, in this embodiment, considering that the ambient temperature of the high-voltage inverter does not change much in a day during actual use, the preset time period can be set to 24 hours, and preferably all operating temperatures and ambient temperatures are read at 24 o'clock on the same day for processing. In actual application, the motor generates heat when the high-voltage inverter 2 is working, so the operating temperature of the high-voltage inverter 2 is always greater than the ambient temperature, and the temperature rise value is always greater than zero.

[0058] In a preferred embodiment of the present invention, the data comparison module 33 includes:

[0059] The first calculation unit 331 is used to read the temperature rise values ​​of the preset number of days before the current day from the database 31, and calculate the average value of the temperature rise values ​​to obtain the average temperature rise value;

[0060] The first comparison unit 332 is connected to the first calculation unit 331, and is used to compare the temperature rise value with the average temperature rise value, and count once when the temperature rise value is greater than the average temperature rise value and the difference is greater than the threshold value, and store the counting result in the database 31, and when the temperature rise value is not greater than the average temperature rise value or the difference is not greater than the threshold value, clear the corresponding counting result in the database 31;

[0061] The second comparison unit 333 is connected to the first comparison unit 332, and is used to read the counting result from the database 31 after the first comparison unit 332 counts each time, and when the counting result is greater than the preset number of times, it generates a temperature abnormality warning signal and sends it to the corresponding mobile terminal 4 for the operation and maintenance personnel to view and process.

[0062] Preferably, the preset number of days is 7 days. It is understandable that the preset number of days is not limited to this, and the specific value can be customized according to needs.

[0063] Specifically, in this embodiment, when an early warning is needed, the data in the database 31 is read. If it is found that the number of days of data stored in the database 31 is less than 7 days, the system will not perform subsequent processing and will not issue an early warning until the stored data is equal to 7 days. Then the system will perform subsequent processing.

[0064] Preferably, the threshold value is 1, and the preset number of times is 3. It is understandable that the threshold value and the preset number of times are not limited by this, and the specific value can be customized according to the needs. The smaller the threshold value, the more it can reflect that the working temperature change of the high-frequency transformer 2 is small and the stability is good. When the number of counts is not greater than 3, the counting result is saved to the database 31. When the temperature rise value is compared with the average temperature rise value next time, if the temperature rise value is greater than the average temperature rise value and the difference is greater than 1, 1 is added on the basis of this count. If the number of counts is greater than 3, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal 4. If the temperature rise value is not greater than the average temperature rise value or the difference is not greater than 1, the counting result is cleared. When the temperature rise value is compared with the average temperature rise value next time, if the temperature rise value is greater than the average temperature rise value and the difference is greater than 1, the number of counts is added on the basis of 0.

[0065] In a preferred embodiment of the present invention, based on the above problems existing in the prior art, a high-voltage inverter temperature abnormality early warning method is provided. Figure 2 As shown, including:

[0066] Step S1, the high-voltage inverter temperature abnormality warning system continuously collects and stores the operating temperature of a monitored high-voltage inverter and the ambient temperature of the environment in which the high-voltage inverter is located;

[0067] Step S2, the high-voltage inverter temperature abnormality warning system reads all the working temperatures and ambient temperatures of the day at a preset time period, processes all the read working temperatures and ambient temperatures to obtain a temperature rise value representing the difference between the working temperature and the ambient temperature and saves the value;

[0068] Step S3, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of a preset number of days before the current day and processes them to obtain an average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold value and lasts for a preset number of times:

[0069] If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal 4 for operation and maintenance personnel to check and process;

[0070] If not, return to step S2.

[0071] In a preferred embodiment of the present invention, Figure 3 As shown, step S2 includes:

[0072] Step S21, the high-voltage inverter temperature abnormality warning system reads all working temperatures and ambient temperatures of the day at every preset time period, and calculates the average value of each working temperature to obtain an average working temperature value, and calculates the average value of each ambient temperature to obtain an average ambient temperature value;

[0073] Step S22: the high-voltage inverter temperature anomaly warning system calculates the difference between the average working temperature and the average ambient temperature as a temperature rise value and saves it.

[0074] In a preferred embodiment of the present invention, Figure 4 As shown, step S3 includes:

[0075] Step S31, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of the preset number of days before the current day, and calculates the average value of the temperature rise values ​​to obtain the average temperature rise value;

[0076] Step S32: the high-voltage inverter temperature abnormality warning system compares the temperature rise value with the average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold value:

[0077] If yes, count once and save the count result, then go to step S33;

[0078] If not, the counting result is reset to zero, and then the process returns to step S31;

[0079] Step S33, the high-voltage inverter temperature abnormality warning system reads the counting result and determines whether the counting result is greater than a preset number:

[0080] If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal 4 for operation and maintenance personnel to check and process;

[0081] If not, return to step S2.

[0082] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the contents of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A high-voltage inverter temperature abnormality warning system, characterized in that: include: An edge data collector, used for continuously collecting and uploading the operating temperature of a high-voltage frequency converter and the ambient temperature of the environment where the high-voltage frequency converter is located; A cloud-based remote intelligent operation and maintenance platform is connected to the edge data collector and at least one mobile terminal, and the cloud-based remote intelligent operation and maintenance platform includes: A database, used to continuously receive and store the uploaded working temperature and ambient temperature; a data processing module, connected to the database, for reading all the working temperatures and the ambient temperatures of the day at intervals of a preset time period, obtaining a temperature rise value representing the difference between the working temperature and the ambient temperature according to all the read working temperatures and the ambient temperatures, and saving the temperature rise value in the database; a data comparison module, connected to the data processing module and the database, respectively, for reading the temperature rise values ​​of a preset number of days before the current day from the database and processing them to obtain an average temperature rise value, then comparing the temperature rise value with the average temperature rise value, and generating a temperature abnormality warning signal and sending it to the corresponding mobile terminal each time the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold value and continues for a preset number of times, so that the operation and maintenance personnel can view and process it; The data processing module comprises: A first processing unit is used to read all the working temperatures and the ambient temperatures of the day at each preset time period, and respectively calculate the average value of each working temperature to obtain an average working temperature value, and calculate the average value of each ambient temperature to obtain an average ambient temperature value; a second processing unit, connected to the first processing unit, for calculating a difference between the average working temperature and the average ambient temperature as the temperature rise value, and saving the temperature rise value in the database; The data comparison module comprises: A first calculation unit, configured to read the temperature rise values ​​of the preset number of days before the current day from the database, and calculate the average of the temperature rise values ​​to obtain the average temperature rise value; a first comparison unit, connected to the first calculation unit, for comparing the temperature rise value with the average temperature rise value, and performing a count once when the temperature rise value is greater than the average temperature rise value and the difference is greater than the threshold value, and storing the count result in the database, and clearing the corresponding count result in the database when the temperature rise value is not greater than the average temperature rise value or the difference is not greater than the threshold value; The second comparison unit is connected to the first comparison unit, and is used to read the counting result from the database after the first comparison unit counts each time, and when the counting result is greater than the preset number of times, generate the temperature abnormality warning signal and send it to the corresponding mobile terminal for operation and maintenance personnel to view and process.

2. The high-voltage inverter temperature abnormality warning system according to claim 1 is characterized in that: The threshold is 1.

3. The high-voltage inverter temperature abnormality warning system according to claim 1 is characterized in that: The preset number of times is 3.

4. The high-voltage inverter temperature abnormality warning system according to claim 1 is characterized in that: The preset number of days is 7 days.

5. The high-voltage inverter temperature abnormality warning system according to claim 1 is characterized in that: A wireless connection is established between the edge data collector and the cloud-based remote intelligent operation and maintenance platform via a 4G or 5G network.

6. A high-voltage inverter temperature abnormality early warning method, characterized in that: Applied to the high-voltage inverter temperature abnormality warning system as claimed in any one of claims 1 to 5, the high-voltage inverter temperature abnormality warning method comprises: Step S1, the high-voltage inverter temperature abnormality early warning system continuously collects and stores the operating temperature of a monitored high-voltage inverter and the ambient temperature of the environment where the high-voltage inverter is located; Step S2, the high-voltage inverter temperature abnormality warning system reads all the working temperatures and the ambient temperatures of the day at a preset time period, obtains a temperature rise value representing the difference between the working temperature and the ambient temperature according to all the read working temperatures and the ambient temperatures, and saves the value; Step S3, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of a preset number of days before the current day and processes them to obtain an average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than a threshold value and lasts for a preset number of times: If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal for operation and maintenance personnel to check and process; If not, return to step S2.

7. The high-voltage inverter temperature abnormality early warning method according to claim 6 is characterized in that: The step S2 comprises: Step S21, the high-voltage inverter temperature abnormality warning system reads all the working temperatures and the ambient temperatures of the day every preset time period, and calculates the average value of each working temperature to obtain an average working temperature value, and calculates the average value of each ambient temperature to obtain an average ambient temperature value; Step S22: the high-voltage inverter temperature anomaly warning system calculates the difference between the average working temperature and the average ambient temperature as the temperature rise value and saves it.

8. The high-voltage inverter temperature abnormality early warning method according to claim 6, characterized in that: The step S3 comprises: Step S31, the high-voltage inverter temperature abnormality warning system reads the temperature rise values ​​of the preset number of days before the current day, and calculates the average value of the temperature rise values ​​to obtain the average temperature rise value; Step S32, the high-voltage inverter temperature abnormality warning system compares the temperature rise value with the average temperature rise value, and determines whether the temperature rise value is greater than the average temperature rise value and the difference is greater than the threshold value: If yes, count once and save the count result, then go to step S33; If not, the counting result is reset to zero, and then the process returns to step S31; Step S33, the high-voltage inverter temperature abnormality warning system reads the counting result and determines whether the counting result is greater than the preset number of times: If yes, a temperature abnormality warning signal is generated and sent to the corresponding mobile terminal for operation and maintenance personnel to check and process; If not, return to step S2.

Images