Frequency converter state safety monitoring system and method based on industrial cloud platform

Abstract

The invention discloses a frequency converter state safety monitoring system and method based on an industrial cloud platform, and belongs to the field of industrial cloud platforms. And importing the frequency conversion function abnormity analysis result and the operation abnormity analysis result into a health analysis model to carry out frequency converter health analysis, carrying out residual life estimation, and carrying out early warning on the operation state of the frequency converter on the line according to the obtained frequency converter health analysis result and residual life estimation. According to the method, the frequency conversion function data of the frequency converter in the operation process are comprehensively evaluated, the operation data of the frequency converter in the operation process are subjected to operation evaluation judgment, and then the frequency converter health analysis is performed through the frequency conversion function abnormity analysis result and the operation abnormity analysis result, so that the residual life of the frequency converter is estimated; and the accuracy of health analysis and life estimation of the frequency converter is improved.

Description

Technical Field

[0001] The present invention belongs to the field of industrial Internet of Things, and specifically relates to a frequency converter state safety monitoring system and method based on an industrial cloud platform. Background Art

[0002] Industrial cloud platform is an industrial Internet platform based on cloud computing technology, which aims to provide cloud computing services in the industrial field, including software as a service, platform as a service, etc. Industrial cloud platform usually provides various tools and resources to support various links such as R&D, production, management, sales, and service in the industrial field, so as to improve enterprise productivity and efficiency. At present, there are many industrial cloud platforms on the market, such as Haier's COSMOP l ace, Shugen Interconnect's Root Cloud Platform, Aerospace Cloud Big Data's Xingyun Zhilian Industrial Cloud Platform, Alibaba Cloud's new manufacturing platform, etc. These platforms cover multiple fields such as supply chain management, production and manufacturing, product design and testing, equipment maintenance and repair, human resources management, etc., providing enterprises with more flexible, efficient and low-cost production methods;

[0003] During the operation of the inverter, the operating life of the inverter is usually set during the design process. However, during use, the combined effects of the environment and load cause the operating life of the inverter to change. The existing technology is unable to comprehensively evaluate the inverter frequency conversion function data during operation, and is unable to perform operation evaluation and judgment on the inverter operation data during operation, and thus is unable to perform inverter health analysis through the frequency conversion function abnormality analysis results and the operation abnormality analysis results, thereby unable to accurately estimate the remaining life of the inverter. Most of the existing technologies have the above problems. In order to solve the problems raised by this background technology, the present application designs an inverter status safety monitoring system and method based on an industrial cloud platform. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention proposes a frequency converter status safety monitoring system and method based on an industrial cloud platform.

[0005] To achieve the above object, the present invention provides the following technical solutions: In the first aspect, a method for safely monitoring the state of a frequency converter based on an industrial cloud platform comprises the following specific steps:

[0006] The data acquisition terminal is used to collect the frequency conversion function data of the inverter during operation on the line, and the inverter operation data during operation is collected at the same time, and the collected data is transmitted to the cloud platform;

[0007] Import the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis;

[0008] Import the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis;

[0009] Import the results of the abnormal analysis of frequency conversion function and operation into the health analysis model to perform inverter health analysis and estimate the remaining life;

[0010] Based on the obtained inverter health analysis results and remaining life estimation, an early warning of the inverter operating status on the line is carried out.

[0011] It should be noted here that as a preferred technical solution for the inverter status safety monitoring method based on the industrial cloud platform, the specific steps of collecting the inverter frequency conversion function data during the operation of the line through the data acquisition terminal, collecting the inverter operation data during the operation, and transmitting the collected data to the cloud platform are:

[0012] S11, collecting the frequency conversion function data of the frequency converter during the operation cycle of the line through the function data collection terminal, wherein the frequency conversion function data of the frequency converter includes the required output frequency, the required output speed data, the actual output frequency data and the actual output speed data;

[0013] S12, collecting the inverter operation data during the operation process through the operation data collection terminal, wherein the inverter operation data includes temperature data, input current and voltage data, and output voltage and current data;

[0014] S13, transmitting the obtained inverter frequency conversion function data and inverter operation data to the cloud platform for storage through the transmission module.

[0015] It should be noted here that, as a preferred technical solution of the inverter state safety monitoring method based on the industrial cloud platform, the method of importing the acquired inverter frequency conversion function data during operation into the frequency conversion function abnormality analysis strategy for frequency conversion function abnormality analysis includes the following specific steps:

[0016] S21. Obtain the output frequency required by the inverter during operation within the monitoring period and the actual output frequency data, and import them into the output power abnormality coefficient calculation formula to calculate the output power abnormality coefficient, wherein the output power abnormality coefficient calculation formula is: Where T is the monitoring cycle duration, xt is the actual output frequency data at time t, xtz is the required output frequency at time t, and dt is the time integral;

[0017] S22, obtaining the real-time output speed data and the actual output speed data required by the inverter during operation within the monitoring period, substituting the real-time output speed data and the actual output speed data into the output speed abnormality coefficient calculation formula to calculate the output speed abnormality coefficient, wherein the output speed abnormality coefficient calculation formula is: Among them, wt is the actual output speed data at time t, and wtz is the actual output speed data at time t;

[0018] S23, the calculated output power abnormality coefficient and output speed abnormality coefficient are introduced into the frequency conversion function abnormality value calculation formula to calculate the frequency conversion function abnormality value, wherein the frequency conversion function abnormality value calculation formula is: Where a is the output power ratio.

[0019] It should be noted here that, as a preferred technical solution of the inverter state safety monitoring method based on the industrial cloud platform, the importing of the acquired inverter operation data into the operation abnormality analysis strategy for operation abnormality analysis includes the following specific steps:

[0020] S31, obtaining the operating temperature data, input current and voltage data, and output voltage and current data of the inverter during operation;

[0021] S32, importing the calculated inverter operating temperature data, input current and voltage data, and output voltage and current data into the operation abnormality analysis value calculation formula to calculate the operation abnormality analysis value, wherein the operation abnormality analysis value calculation formula is: Among them, n is the type of inverter operating data, ci is the proportion coefficient of the i-th operating data of the inverter, xit is the specific value of the i-th operating data at time t, xim is the median value of the safety range of the i-th operating data at time t, ximax is the maximum value of the safety range of the i-th operating data at time t, and ximin is the minimum value of the safety range of the i-th operating data at time t.

[0022] It should be noted that, as a preferred technical solution for the inverter status safety monitoring method based on the industrial cloud platform, the method of importing the abnormal analysis results of the frequency conversion function and the abnormal operation analysis results into the health analysis model to perform inverter health analysis and estimate the remaining life includes the following specific contents:

[0023] S41, obtain the calculated frequency conversion function abnormality value and operation abnormality analysis value, substitute them into the health analysis value calculation formula to calculate the health analysis value, wherein the health analysis value calculation formula is: S = ( λkbp+(1-λ)kc+1 ) - 1 , where λ is the frequency conversion function abnormality ratio;

[0024] S42, obtaining the calculated health analysis value of the current monitoring process and the health analysis value of the previous monitoring process, and obtaining the set health analysis threshold value requiring maintenance and the time interval between two monitorings, and substituting them into the remaining life estimation calculation formula to calculate the remaining life of the inverter, wherein the remaining life estimation calculation formula is: Among them, St is the health analysis value of the current monitoring process, Stc is the health analysis value of the previous monitoring process, Sm is the set health analysis threshold that requires maintenance, and ΔT is the time between two monitorings.

[0025] It should be noted that, as a preferred technical solution of the inverter status safety monitoring method based on the industrial cloud platform, the early warning of the inverter operation status on the line based on the obtained inverter health analysis results and remaining life estimation includes the following specific contents:

[0026] Obtain the calculated remaining life of the inverter, and compare the remaining life of the inverter with the set remaining life threshold. If the remaining life of the inverter is greater than or equal to the set remaining life threshold, no warning of the inverter operating status is issued to the management end. If the remaining life of the inverter is less than the set remaining life threshold, a warning of the inverter operating status is issued to the management end.

[0027] In the second aspect, the inverter state safety monitoring system based on the industrial cloud platform is implemented based on the inverter state safety monitoring method based on the industrial cloud platform, which specifically includes a data acquisition module, a frequency conversion function abnormality analysis module, an operation abnormality analysis module, a remaining life estimation module and an operation status early warning module, wherein the data acquisition module is used to collect the frequency conversion function data of the inverter during operation on the line through the data acquisition terminal, and collect the operation data of the inverter during operation, and transmit the collected data to the cloud platform;

[0028] The frequency conversion function abnormality analysis module is used to import the frequency conversion function data of the frequency converter obtained during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis;

[0029] The operation abnormality analysis module is used to import the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis;

[0030] The production speed analysis module is used to import the acquired equipment operation fatigue analysis results and equipment production quality analysis results into the production speed, and to import the frequency conversion function abnormality analysis results and operation abnormality analysis results into the health analysis model to perform inverter health analysis and estimate the remaining life;

[0031] The operation status early warning module is used to provide early warning of the operation status of the inverter on the line according to the obtained inverter health analysis results and remaining life estimation;

[0032] It also includes a control module for operating control of a data acquisition module, a frequency conversion function abnormality analysis module, an operation abnormality analysis module, a remaining life estimation module and an operation status early warning module.

[0033] In a third aspect, an electronic device includes: a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0034] The processor executes the above-mentioned inverter status safety monitoring method based on the industrial cloud platform by calling the computer program stored in the memory.

[0035] In a fourth aspect, a computer-readable storage medium stores instructions, which, when executed on a computer, enable the computer to execute the inverter status safety monitoring method based on the industrial cloud platform as described above.

[0036] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention collects the frequency conversion function data of the inverter during operation on the line through the data acquisition terminal, collects the operation data of the inverter during operation, and transmits the collected data to the cloud platform, imports the collected frequency conversion function data of the inverter during operation into the frequency conversion function abnormality analysis strategy for frequency conversion function abnormality analysis, imports the collected inverter operation data into the operation abnormality analysis strategy for operation abnormality analysis, imports the frequency conversion function abnormality analysis results and the operation abnormality analysis results into the health analysis model for inverter health analysis, and performs remaining life estimation, and performs early warning of the operation status of the inverter on the line according to the obtained inverter health analysis results and the remaining life estimation, the present invention comprehensively evaluates the inverter frequency conversion function data during operation, and performs operation evaluation and judgment on the inverter operation data during operation, and then performs inverter health analysis through the frequency conversion function abnormality analysis results and the operation abnormality analysis results, thereby estimating the remaining life of the inverter, and improving the accuracy of inverter health analysis and life estimation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall process of the inverter state safety monitoring method based on the industrial cloud platform of the present invention;

[0038] Figure 2 This is a schematic diagram of step S1 of the inverter status safety monitoring method based on the industrial cloud platform of the present invention;

[0039] Figure 3 This is a schematic diagram of step S2 of the inverter status safety monitoring method based on the industrial cloud platform of the present invention;

[0040] Figure 4 It is a schematic diagram of the overall framework of the inverter state safety monitoring system based on the industrial cloud platform of the present invention;

[0041] Figure 5 This is a schematic diagram of data transmission according to the present invention. DETAILED DESCRIPTION

[0042] The technical solution of the present invention is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present invention and the specific features in the embodiments are detailed descriptions of the technical solution of the present invention, rather than limitations on the technical solution of the present invention. The embodiments of the present invention and the technical features in the embodiments may be combined with each other unless there is a conflict.

[0043] Example 1

[0044] To solve the technical problem raised in the background technology: the operating life of the inverter is usually set during the design process, but the combined effects of the environment and load during use cause the operating life of the inverter to change. The existing technology cannot comprehensively evaluate the inverter frequency conversion function data during operation, and cannot perform operation evaluation and judgment on the inverter operation data during operation, and thus cannot perform inverter health analysis through the frequency conversion function abnormality analysis results and operation abnormality analysis results, thereby failing to accurately estimate the remaining life of the inverter;

[0045] The application scenarios of this embodiment are as follows Figure 5 As shown, the data acquisition terminal collects the frequency conversion function data of the inverter during operation on the line, and collects the operation data of the inverter during operation, and transmits the collected data to the cloud platform. The cloud platform conducts a comprehensive evaluation of the frequency conversion function data of the inverter during operation, and performs an operation evaluation and judgment on the operation data of the inverter during operation, and then performs an inverter health analysis through the abnormal analysis results of the frequency conversion function and the abnormal operation analysis results, so as to estimate the remaining life of the inverter, and transmit the early warning of the operation status of the inverter on the line to the administrator port (including the management terminal 1 of the large screen in the management hall and the management terminal 2 of the administrator's mobile phone);

[0046] The present invention provides a preferred embodiment: Figure 1-Figure 2 As shown, the inverter status safety monitoring method based on the industrial cloud platform includes the following specific steps:

[0047] S1. Collect the frequency conversion function data of the inverter during the operation of the line through the data acquisition terminal, and collect the operation data of the inverter during the operation, and transmit the collected data to the cloud platform;

[0048] In this embodiment, the specific steps of collecting the frequency conversion function data of the frequency converter during the operation of the line through the data acquisition terminal, collecting the operation data of the frequency converter during the operation, and transmitting the collected data to the cloud platform are:

[0049] S11, collecting the frequency conversion function data of the frequency converter during the operation cycle of the line through the function data collection terminal, wherein the frequency conversion function data of the frequency converter includes the required output frequency, the required output speed data, the actual output frequency data and the actual output speed data;

[0050] The required output frequency, required output speed data, actual output frequency data and actual output speed data are of great significance for evaluating the abnormality of the inverter's frequency conversion function. These data can be used to monitor the working status of the inverter, detect abnormal conditions in time, and perform fault diagnosis and prevention. The following is the necessity of evaluating the abnormality of the inverter's frequency conversion function:

[0051] Fault diagnosis: By monitoring the actual output frequency and speed data, the inverter's frequency conversion function abnormality can be discovered in time. For example, if the actual output frequency or speed is significantly different from the required data, or if abnormal fluctuations occur under a specific load, it may indicate that the inverter has a frequency conversion function abnormality.

[0052] Optimize operating efficiency: By analyzing the actual output frequency and speed data, you can understand the performance of the inverter and optimize its operating efficiency. For example, if the output speed does not match the required data, it may be due to aging or loss of the internal components of the inverter. By analyzing these data, you can replace or maintain them in time to improve the working efficiency of the equipment;

[0053] Meeting specific application requirements: In some specific application scenarios, specific output frequency and speed data may be required. By monitoring and analyzing these data, it can be ensured that the inverter can meet the application requirements and avoid performance degradation or failure caused by abnormal frequency conversion function;

[0054] In summary, the required output frequency, the required output speed data, the actual output frequency data and the actual output speed data are necessary for evaluating the abnormality of the frequency conversion function of the inverter. These data can help users to timely discover the abnormality of the equipment and optimize the performance of the equipment; S12, collecting the operation data of the inverter during the operation process through the operation data collection terminal, wherein the inverter operation data includes temperature data, input current and voltage data and output voltage and current data;

[0055] S13, transmitting the obtained inverter frequency conversion function data and inverter operation data to the cloud platform for storage through the transmission module;

[0056] The following is the Python code that transmits the acquired inverter frequency conversion function data and inverter operation data to the cloud platform for storage through the transmission module:

[0057]

[0058]

[0059] S2, importing the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis;

[0060] In this embodiment, the step of importing the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis includes the following specific steps:

[0061] S21. Obtain the output frequency required by the inverter during operation within the monitoring period and the actual output frequency data, and import them into the output power abnormality coefficient calculation formula to calculate the output power abnormality coefficient, wherein the output power abnormality coefficient calculation formula is: Where T is the monitoring cycle duration, xt is the actual output frequency data at time t, xtz is the required output frequency at time t, and dt is the time integral;

[0062] S22, obtaining the real-time output speed data and the actual output speed data required by the inverter during operation within the monitoring period, substituting the real-time output speed data and the actual output speed data into the output speed abnormality coefficient calculation formula to calculate the output speed abnormality coefficient, wherein the output speed abnormality coefficient calculation formula is: Among them, wt is the actual output speed data at time t, and wtz is the actual output speed data at time t;

[0063] S23, the calculated output power abnormality coefficient and output speed abnormality coefficient are introduced into the frequency conversion function abnormality value calculation formula to calculate the frequency conversion function abnormality value, wherein the frequency conversion function abnormality value calculation formula is: Where a is the output power ratio.

[0064] Through this step: by obtaining the output frequency and output speed data within the inverter monitoring period, and by evaluating the output frequency and output speed data within the inverter monitoring period, the operating health of the inverter can be understood. The stability of the frequency and speed data: evaluate the fluctuation range and stability of the frequency and speed data to determine the stability and control accuracy of the inverter. If the data fluctuates greatly, it means that the inverter may have a fault or low control accuracy. Evaluate whether the output power of the inverter is consistent with the set power to determine the power control accuracy of the inverter. If the output power deviation is large, it means that there may be problems with the power control of the inverter.

[0065] S3, importing the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis;

[0066] In this embodiment, importing the collected inverter operation data into the operation abnormality analysis strategy for operation abnormality analysis includes the following specific steps:

[0067] S31, obtaining the operating temperature data, input current and voltage data, and output voltage and current data of the inverter during operation;

[0068] S32, importing the calculated inverter operating temperature data, input current and voltage data, and output voltage and current data into the operation abnormality analysis value calculation formula to calculate the operation abnormality analysis value, wherein the operation abnormality analysis value calculation formula is: Among them, n is the type of inverter operating data, ci is the proportion coefficient of the i-th operating data of the inverter, xit is the specific value of the i-th operating data at time t, xim is the median value of the safety range of the i-th operating data at time t, ximax is the maximum value of the safety range of the i-th operating data at time t, and ximin is the minimum value of the safety range of the i-th operating data at time t.

[0069] The inverter operation data, including temperature data, input current and voltage data, and output voltage and current data, are necessary for abnormal operation analysis as follows:

[0070] Fault diagnosis and prevention: By real-time monitoring of temperature data, overheating of the inverter's internal components can be detected in time to prevent equipment damage caused by overheating. Input current and voltage data and output voltage and current data can reflect the inverter's working status, such as whether it is overloaded, overvoltage, undervoltage, etc., so as to provide early warning and take timely measures to prevent faults.

[0071] Optimize operating efficiency: By analyzing the operating data, you can understand the performance of the inverter and optimize its operating efficiency. For example, if the output power is insufficient, it may be due to the aging or loss of certain components. By analyzing these data, you can replace or maintain them as soon as possible to extend the service life of the equipment.

[0072] Energy management: The input current and output voltage data of the inverter can also be used for energy management. These data can reflect the energy consumption of the inverter under different loads and provide data support for energy conservation and emission reduction;

[0073] S4, importing the results of the frequency conversion function abnormality analysis and the operation abnormality analysis into the health analysis model to perform the inverter health analysis and estimate the remaining life;

[0074] In this embodiment, the frequency conversion function abnormality analysis results and the operation abnormality analysis results are imported into the health analysis model to perform the frequency converter health analysis, and the remaining life estimation includes the following specific contents:

[0075] S41, obtain the calculated frequency conversion function abnormality value and operation abnormality analysis value, substitute them into the health analysis value calculation formula to calculate the health analysis value, wherein the health analysis value calculation formula is: S = ( λkbp+(1-λ)kc+1 ) - 1 , where λ is the frequency conversion function abnormality ratio;

[0076] S42, obtaining the calculated health analysis value of the current monitoring process and the health analysis value of the previous monitoring process, and obtaining the set health analysis threshold value requiring maintenance and the time interval between two monitorings, and substituting them into the remaining life estimation calculation formula to calculate the remaining life of the inverter, wherein the remaining life estimation calculation formula is: Among them, St is the health analysis value of the current monitoring process, Stc is the health analysis value of the previous monitoring process, Sm is the set health analysis threshold that requires maintenance, and ΔT is the time between two monitorings;

[0077] S5. Early warning of the inverter operation status on the line is performed based on the obtained inverter health analysis results and remaining life estimation;

[0078] In this embodiment, the early warning of the inverter operation status on the line based on the obtained inverter health analysis result and the remaining life estimation includes the following specific contents:

[0079] Obtain the calculated remaining life of the inverter, and compare the remaining life of the inverter with the set remaining life threshold. If the remaining life of the inverter is greater than or equal to the set remaining life threshold, no warning of the inverter operation status is issued to the management end. If the remaining life of the inverter is less than the set remaining life threshold, a warning of the inverter operation status is issued to the management end.

[0080] It should be noted in this embodiment that the output power proportion coefficient, the proportion coefficient of the i-th operating data of the inverter and the proportion coefficient of the abnormal frequency conversion function here can be obtained by the entropy weight method and the fitting method, and the preferred value-taking method is: obtain the inverter frequency conversion function data and the inverter operation data of 500 groups of lines during operation, and obtain the healthy operation time of the inverter at the same time, obtain the inverter frequency conversion function data and the inverter operation data, substitute them into the remaining life estimation calculation formula to perform the remaining life estimation calculation, import the healthy operation time of the inverter and the remaining life estimation calculation into the fitting software, and output the output power proportion coefficient, the proportion coefficient of the i-th operating data of the inverter and the value of the abnormal frequency conversion function proportion coefficient that meet the highest judgment accuracy;

[0081] It should be noted that the advantages of this embodiment over the prior art are as follows: the frequency conversion function data of the inverter during operation on the line is collected through the data acquisition terminal, and the inverter operation data during operation is collected at the same time, and the collected data is transmitted to the cloud platform; the collected frequency conversion function data of the inverter during operation is imported into the frequency conversion function abnormality analysis strategy for frequency conversion function abnormality analysis; the collected inverter operation data is imported into the operation abnormality analysis strategy for operation abnormality analysis; the frequency conversion function abnormality analysis results and the operation abnormality analysis results are imported into the health analysis model for inverter health analysis, and the remaining life is estimated; according to the obtained inverter health analysis results and the remaining life estimation, an early warning of the inverter operation status on the line is performed; the present invention comprehensively evaluates the inverter frequency conversion function data during operation, and at the same time performs operation evaluation and judgment on the inverter operation data during operation, and then performs inverter health analysis through the frequency conversion function abnormality analysis results and the operation abnormality analysis results, thereby estimating the remaining life of the inverter, and improving the accuracy of the inverter health analysis and life estimation.

[0082] Example 2

[0083] like Figure 4 As shown, the inverter state safety monitoring system based on the industrial cloud platform is implemented based on the inverter state safety monitoring method based on the industrial cloud platform, which specifically includes a data acquisition module, a frequency conversion function abnormality analysis module, an operation abnormality analysis module, a remaining life estimation module and an operation status early warning module, wherein the data acquisition module is used to collect the frequency conversion function data of the inverter during the operation of the line through the data acquisition terminal, and collect the operation data of the inverter during the operation, and transmit the collected data to the cloud platform;

[0084] A frequency conversion function abnormality analysis module is used to import the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis;

[0085] An operation abnormality analysis module is used to import the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis;

[0086] The production speed analysis module is used to import the acquired equipment operation fatigue analysis results and equipment production quality analysis results into the production speed, and to import the frequency conversion function abnormality analysis results and operation abnormality analysis results into the health analysis model to perform inverter health analysis and estimate the remaining life;

[0087] The operation status early warning module is used to provide early warning of the operation status of the inverter on the line based on the obtained inverter health analysis results and remaining life estimation;

[0088] In a specific embodiment, it also includes a control module for controlling the operation of the data acquisition module, the frequency conversion function abnormality analysis module, the operation abnormality analysis module, the remaining life estimation module and the operation status warning module.

[0089] Example 3

[0090] This embodiment provides an electronic device, including: a processor and a memory, wherein the memory stores a computer program that can be called by the processor;

[0091] The processor executes the above-mentioned inverter status safety monitoring method based on the industrial cloud platform by calling the computer program stored in the memory.

[0092] The electronic device may have relatively large differences due to different configurations or performances, and may include one or more processors and one or more memories, wherein the memory stores at least one computer program, and the computer program is loaded and executed by the processor to implement the inverter state safety monitoring method based on the industrial cloud platform provided by the above method embodiment. The electronic device may also include other components for realizing the functions of the device, for example, the electronic device may also have components such as a wired or wireless network interface and an input and output interface to input and output data. This embodiment will not be described in detail here.

[0093] Example 4

[0094] This embodiment provides a computer-readable storage medium having a rewritable computer program stored thereon;

[0095] When the computer program runs on a computer device, the computer device executes the above-mentioned inverter status safety monitoring method based on the industrial cloud platform.

[0096] For example, the computer readable storage medium can be a read-only memory, a random access memory, a read-only CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

[0097] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When a computer instruction or computer program is loaded or executed on a computer, a process or function according to an embodiment of the present invention is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network or other programmable device. Computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center through a wired network or / and a wireless network. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (for example, a floppy disk, a hard disk, a tape), an optical medium (for example, a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

Claims

1. The inverter status safety monitoring method based on the industrial cloud platform is characterized by: It includes the following specific steps: The data acquisition terminal is used to collect the frequency conversion function data of the inverter during operation on the line, and the inverter operation data during operation is collected at the same time, and the collected data is transmitted to the cloud platform; Import the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis; Import the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis; Import the results of the abnormal analysis of frequency conversion function and operation into the health analysis model to perform inverter health analysis and estimate the remaining life; Based on the obtained inverter health analysis results and remaining life estimation, an early warning of the inverter operating status on the line is carried out.

2. The inverter state safety monitoring method based on the industrial cloud platform according to claim 1 is characterized in that: The step of importing the acquired frequency conversion function data of the frequency converter during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis comprises the following specific steps: The output frequency required by the inverter and the actual output frequency data during operation within the monitoring period are obtained and imported into the output power abnormality coefficient calculation formula to calculate the output power abnormality coefficient. The output power abnormality coefficient calculation formula is: Where T is the monitoring cycle duration, xt is the actual output frequency data at time t, xtz is the required output frequency at time t, and dt is the time integral; The real-time output speed data and actual output speed data required by the inverter during operation within the monitoring period are obtained, and the real-time output speed data and the actual output speed data are substituted into the output speed abnormality coefficient calculation formula to calculate the output speed abnormality coefficient, where the output speed abnormality coefficient calculation formula is: Among them, wt is the actual output speed data at time t, and wtz is the actual output speed data at time t; The calculated output power abnormality coefficient and output speed abnormality coefficient are introduced into the frequency conversion function abnormality value calculation formula to calculate the frequency conversion function abnormality value, wherein the frequency conversion function abnormality value calculation formula is: Where a is the output power ratio.

3. The inverter state safety monitoring method based on the industrial cloud platform according to claim 2 is characterized in that: The step of importing the collected inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis includes the following specific steps: Obtain the inverter operating temperature data, input current and voltage data, and output voltage and current data during operation; The calculated inverter operating temperature data, input current and voltage data, and output voltage and current data are imported into the operation abnormality analysis value calculation formula to calculate the operation abnormality analysis value, wherein the operation abnormality analysis value calculation formula is: Among them, n is the type of inverter operating data, ci is the proportion coefficient of the i-th operating data of the inverter, xit is the specific value of the i-th operating data at time t, xim is the median value of the safety range of the i-th operating data at time t, ximax is the maximum value of the safety range of the i-th operating data at time t, and ximin is the minimum value of the safety range of the i-th operating data at time t.

4. The inverter state safety monitoring method based on the industrial cloud platform according to claim 3 is characterized in that: The method of importing the results of the abnormal analysis of the frequency conversion function and the abnormal analysis of the operation into the health analysis model to perform the health analysis of the frequency converter and estimate the remaining life includes the following specific contents: Obtain the calculated frequency conversion function abnormality value and operation abnormality analysis value, and substitute them into the health analysis value calculation formula to calculate the health analysis value. The health analysis value calculation formula is: S = ( λkbp+(1-λ)kc+1 ) - 1 , where λ is the frequency conversion function abnormality ratio; Obtain the calculated health analysis value of this monitoring process and the health analysis value of the last monitoring process, and at the same time obtain the set health analysis threshold for maintenance and the time between two monitorings, and substitute them into the remaining life estimation calculation formula to calculate the remaining life of the inverter. The remaining life estimation calculation formula is: Among them, St is the health analysis value of the current monitoring process, Stc is the health analysis value of the previous monitoring process, Sm is the set health analysis threshold that requires maintenance, and ΔT is the time between two monitorings.

5. The inverter state safety monitoring method based on the industrial cloud platform according to claim 4 is characterized in that: The early warning of the inverter operation status on the line based on the obtained inverter health analysis results and remaining life estimation includes the following specific contents: Obtain the calculated remaining life of the inverter, and compare the remaining life of the inverter with the set remaining life threshold. If the remaining life of the inverter is greater than or equal to the set remaining life threshold, no warning of the inverter operating status is issued to the management end. If the remaining life of the inverter is less than the set remaining life threshold, a warning of the inverter operating status is issued to the management end.

6. The inverter state safety monitoring method based on the industrial cloud platform according to claim 5 is characterized in that: The specific steps of collecting the frequency conversion function data of the frequency converter during operation of the line through the data collection terminal, collecting the operation data of the frequency converter during operation, and transmitting the collected data to the cloud platform are: The frequency conversion function data of the frequency converter during the operation cycle of the line is collected through the function data collection terminal, wherein the frequency conversion function data of the frequency converter is the required output frequency, the required output speed data, the actual output frequency data and the actual output speed data; Collecting the inverter operation data during operation through the operation data collection terminal, wherein the inverter operation data includes temperature data, input current and voltage data, and output voltage and current data; The acquired inverter frequency conversion function data and inverter operation data are transmitted to the cloud platform for storage through the transmission module.

7. A frequency converter state safety monitoring system based on an industrial cloud platform, which is implemented based on the frequency converter state safety monitoring method based on an industrial cloud platform as claimed in any one of claims 1 to 6, characterized in that: It specifically includes a data acquisition module, a frequency conversion function abnormality analysis module, an operation abnormality analysis module, a remaining life estimation module and an operation status warning module, wherein the data acquisition module is used to collect the frequency conversion function data of the frequency converter during the operation of the line through the data acquisition terminal, and collect the operation data of the frequency converter during the operation, and transmit the collected data to the cloud platform; The frequency conversion function abnormality analysis module is used to import the frequency conversion function data of the frequency converter obtained during operation into the frequency conversion function abnormality analysis strategy to perform frequency conversion function abnormality analysis; The operation abnormality analysis module is used to import the acquired inverter operation data into the operation abnormality analysis strategy to perform operation abnormality analysis; The production speed analysis module is used to import the acquired equipment operation fatigue analysis results and equipment production quality analysis results into the production speed, and to import the frequency conversion function abnormality analysis results and operation abnormality analysis results into the health analysis model to perform inverter health analysis and estimate the remaining life; The operation status early warning module is used to provide early warning of the operation status of the inverter on the line based on the obtained inverter health analysis results and remaining life estimation.

8. An electronic device comprising: A processor and a memory, wherein the memory stores a computer program that can be called by the processor; It is characterized in that the processor executes the inverter status safety monitoring method based on the industrial cloud platform as described in any one of claims 1 to 6 by calling the computer program stored in the memory.

9. A computer-readable storage medium, characterized in that: Instructions are stored, and when the instructions are executed on a computer, the computer executes the inverter status safety monitoring method based on an industrial cloud platform as described in any one of claims 1 to 6.

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