Inverter fault recording near-end analysis method

Abstract

The invention provides a near-end analysis method for inverter fault recording. The method comprises the following steps: when a fault occurs, performing fault recording on a fault waveform to generate a fault recording file; storing the fault recording file to a local disk; the fault recording file is used for displaying the fault waveform of the inverter after the mobile terminal obtains the fault recording file; and receiving a Bluetooth connection request of the mobile terminal, and establishing Bluetooth connection with the mobile terminal. The method provided by the invention is simple and convenient to operate, and improves the working efficiency of operation and maintenance personnel in positioning inverter faults.

Description

Technical Field

[0001] The present invention relates to the technical field of inverter fault location, and in particular to a proximal analysis method of inverter fault recording. Background Art

[0002] In a non-networked scenario, the inverter automatically writes the fault information when a fault occurs and the current operating status information to the local disk in the form of a file. The existing technical means is to connect the inverter to the data transmission bus, connect the local computer to the inverter storage space to read the file, and use specific software to parse the file content and display the waveform curve. The operation and maintenance personnel can analyze the cause of the inverter failure and provide a solution based on the waveform curve.

[0003] The problem based on the above scenario is that a local computer needs to be wired to connect to the inverter to read files, and connecting to the inverter requires removing the inverter's protective device, and then using the data bus to connect the inverter. In most cases, a long data connection line needs to be prepared. For equipment installed in mountainous areas, operation and maintenance personnel also need to bring their own computers to locate faults. The operation is cumbersome and the work efficiency is low. Summary of the invention

[0004] The present invention provides a proximal analysis method for inverter fault recording, which is easy to operate and improves the work efficiency of operation and maintenance personnel in locating inverter faults.

[0005] According to a first aspect of an embodiment of the present invention, a proximal analysis method of inverter fault recording is provided, which is applied to an inverter, and the method includes:

[0006] When a fault occurs, the fault waveform is recorded to generate a fault recording file;

[0007] Store the fault recording file to the local disk; after the mobile terminal obtains the fault recording file, it can display the fault waveform of the inverter;

[0008] Receive a Bluetooth connection request from a mobile terminal and establish a Bluetooth connection with the mobile terminal.

[0009] In a possible implementation, before receiving the Bluetooth connection request from the mobile terminal, the method further includes:

[0010] Record operating parameters when a fault occurs;

[0011] The operating parameters are stored in the local disk, so that the mobile terminal can obtain the operating parameters and then replay the operating status of the inverter when a fault occurs.

[0012] In a possible implementation, the inverter is also connected to the analysis platform via wired communication.

[0013] In a possible implementation, when the inverter is connected to the external network, the inverter is also wirelessly connected to the cloud file server.

[0014] According to a second aspect of an embodiment of the present invention, a proximal analysis method for inverter fault recording is provided, which is applied to a mobile terminal, and the method includes:

[0015] Send a Bluetooth connection request to the inverter and establish a Bluetooth connection with the inverter;

[0016] Get the fault recording file from the local disk of the inverter;

[0017] Analyze the fault recording file to obtain the fault waveform;

[0018] Displays the fault waveform.

[0019] In a possible implementation, after establishing a Bluetooth connection with the inverter, the method further includes:

[0020] Get the operating parameters from the local disk of the inverter;

[0021] Based on the operating parameters, replay the operating status of the inverter when a fault occurs.

[0022] In a possible implementation, based on the operating parameters, replaying the operating state of the inverter when a fault occurs includes:

[0023] Based on the operating parameters, the displacement information of the operating parameters is plotted along the time axis.

[0024] In a possible implementation, the method further includes:

[0025] According to the operating parameters, the preset rules are used to locate the fault.

[0026] According to a third aspect of an embodiment of the present invention, a proximal analysis method of inverter fault recording is provided, which is applied to an analysis platform, and the analysis platform and the inverter are connected via wired communication. The method includes:

[0027] Get the fault recording file from the local disk of the inverter;

[0028] Analyze the fault recording file to obtain the fault waveform of the inverter;

[0029] The fault can be located by analyzing the fault waveform.

[0030] According to a fourth aspect of an embodiment of the present invention, a method for analyzing inverter fault recording is provided, which is applied to the cloud, and the cloud includes a cloud file server and a cloud platform. When the inverter is connected to the external network, the inverter is also connected to the cloud file server by wireless communication. The method includes:

[0031] The cloud file server receives and stores the fault recording files pushed by the inverter;

[0032] The cloud platform reads the fault recording file based on the inverter serial number;

[0033] The cloud platform analyzes the fault recording file to obtain the fault waveform of the inverter;

[0034] The cloud platform locates the fault by analyzing the fault waveform.

[0035] The embodiment of the present invention provides a proximal analysis method for inverter fault recording. When a fault occurs in the inverter, a fault recording is performed to generate a fault recording file, and the fault recording file is stored in a local disk. The operation and maintenance personnel control the mobile terminal to establish a Bluetooth connection with the inverter. The mobile terminal obtains the fault recording file from the local disk of the inverter, analyzes the fault recording file, obtains the fault waveform, and displays the fault waveform. The operation and maintenance personnel view the fault waveform to locate the inverter fault. The operation and maintenance personnel only need to carry the mobile terminal and control the mobile terminal to establish a Bluetooth connection with the inverter to read the fault recording file, which reduces the equipment burden for the operation and maintenance personnel, and there is no need to disassemble the protective device of the inverter. The operation is simple and improves the work efficiency of the operation and maintenance personnel in locating inverter faults. The inverter does not need to be connected to the external network and can adapt to environments with poor network coverage. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0037] Figure 1 A schematic flow chart of a method for proximal analysis of inverter fault recording provided by an embodiment of the present invention;

[0038] Figure 2 A schematic flow chart of another method for proximal analysis of inverter fault recording provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] Embodiment 1

[0041] The embodiment of the present invention provides a proximal analysis method of inverter fault recording, such as Figure 1 As shown, the following steps may be included:

[0042] S101, when a fault occurs, a fault waveform is recorded to generate a fault recording file.

[0043] When an inverter fails, the fault waveform is automatically recorded to generate a fault recording file.

[0044] The fault recorder records the voltage waveform, current waveform and other fault waveforms when a fault occurs in the inverter, and the generated fault recorder file contains the data of these fault waveforms.

[0045] S102, storing the fault recording file to a local disk.

[0046] The inverter stores the fault recording file in the local disk.

[0047] S103: Send a Bluetooth connection request to the inverter to establish a Bluetooth connection with the inverter.

[0048] The operation and maintenance personnel carry out operation and maintenance on the faulty inverter. They carry a mobile terminal to the inverter's work site, control the mobile terminal to send a Bluetooth connection request to the inverter, and establish a Bluetooth connection with the inverter. The mobile terminal is pre-installed with analysis software that can analyze the inverter fault recording file and can also replay the inverter's operating status based on the operating parameters.

[0049] Mobile terminals can be mobile phones and other devices that have data reading, analysis and display functions.

[0050] S104: Receive a Bluetooth connection request from the mobile terminal and establish a Bluetooth connection with the mobile terminal.

[0051] The inverter is pre-configured with a Bluetooth communication module to support the transmission of Bluetooth signals.

[0052] The inverter receives the Bluetooth connection request from the mobile terminal and establishes a Bluetooth connection with the mobile terminal.

[0053] S105, obtaining a fault recording file from a local disk of the inverter.

[0054] The mobile terminal reads the fault recording file from the local disk of the inverter and verifies the fault recording file.

[0055] S106, analyzing the fault recording file to obtain the fault waveform.

[0056] The analysis software installed on the mobile terminal analyzes the fault recording file to obtain the fault waveform

[0057] S107, display the fault waveform.

[0058] The analysis software installed on the mobile terminal displays the fault waveform through the mobile terminal display.

[0059] In one embodiment, the analysis software installed in the mobile terminal can also automatically locate the fault of the inverter based on the fault waveform, thereby reducing the workload of the operation and maintenance personnel.

[0060] The embodiment of the present invention provides a proximal analysis method for inverter fault recording. When a fault occurs in the inverter, a fault recording is performed to generate a fault recording file, and the fault recording file is stored in a local disk. The operation and maintenance personnel control the mobile terminal to establish a Bluetooth connection with the inverter. The mobile terminal obtains the fault recording file from the local disk of the inverter, analyzes the fault recording file, obtains the fault waveform, and displays the fault waveform. The operation and maintenance personnel view the fault waveform to locate the inverter fault. The operation and maintenance personnel only need to carry the mobile terminal and control the mobile terminal to establish a Bluetooth connection with the inverter to read the fault recording file, which reduces the equipment burden for the operation and maintenance personnel, and there is no need to disassemble the protective device of the inverter. The operation is simple and improves the work efficiency of the operation and maintenance personnel in locating inverter faults. The inverter does not need to be connected to the external network and can adapt to environments with poor network coverage.

[0061] Embodiment 2

[0062] In some embodiments, before S104: receiving a Bluetooth connection request from a mobile terminal, the method may further include the following steps:

[0063] S108, recording operating parameters when a fault occurs.

[0064] When the inverter fails, it records its own operating parameters such as telesignaling, telemetering, remote control, and remote adjustment, which may include voltage, current, frequency, power, and other parameters.

[0065] When the inverter is running, all telesignaling, telemetering, remote control and remote adjustment parameters before x minutes are saved. If the inverter has no fault, only x minutes of data are retained to reduce disk usage.

[0066] S109, storing the operating parameters to the local disk.

[0067] The inverter stores the operating parameters to the local disk.

[0068] At S103: after establishing a Bluetooth connection with the inverter, the method may further include the following steps:

[0069] S110, obtaining operating parameters from a local disk of the inverter.

[0070] The mobile terminal reads the operating parameters from the local disk of the inverter and verifies the operating parameters.

[0071] S111, based on the operating parameters, replay the operating state of the inverter when the fault occurs.

[0072] The analysis software installed on the mobile terminal is based on the operating parameters. Based on the operating parameters, the displacement information of the operating parameters is plotted along the time axis and played back through the display screen. The operation and maintenance personnel view the playback of the operating status and locate the fault of the inverter.

[0073] In one embodiment, the following steps may also be included:

[0074] S112, locating the fault according to the operating parameters and using preset rules.

[0075] The analysis software of the mobile terminal can also automatically locate inverter faults based on operating parameters and preset rules, provide fault prompt information, and reduce the workload of operation and maintenance personnel.

[0076] Preset rules can include:

[0077] Rule 1: Compare the operating parameters with the preset parameter range. When the preset parameter range is exceeded, a corresponding prompt is given. For example, if the current in the operating parameters exceeds the preset current threshold, the prompt is that the current is too high; if the voltage in the operating parameters exceeds the preset voltage threshold, the prompt is that the voltage is too high; if the power in the operating parameters exceeds the preset voltage threshold, the prompt is that the power is too high.

[0078] Rule 2: Parameter combination analysis. For example, when the inverter is charging, discharging is also in progress (it cannot be charged and discharged at the same time under normal conditions), indicating a charging and discharging fault.

[0079] The embodiment of the present invention provides a proximal analysis method for inverter fault recording. When an inverter fails, fault recording is performed to generate a fault recording file and record operating parameters, and the fault recording file and operating parameters are stored in a local disk. The operation and maintenance personnel control the mobile terminal to establish a Bluetooth connection with the inverter. The mobile terminal obtains the fault recording file and operating parameters from the local disk of the inverter, analyzes the fault recording file, obtains the fault waveform, displays the fault waveform, simulates the operating state of the inverter when a fault occurs based on the operating parameters, and replays the operating state. The operation and maintenance personnel view the fault waveform displayed by the mobile terminal and the replayed operating state to locate the inverter fault. The operation and maintenance personnel only need to carry the mobile terminal and control the mobile terminal to establish a Bluetooth connection with the inverter to read the fault recording file and operating parameters. There is no need to connect the inverter by wire, which reduces the equipment burden for the operation and maintenance personnel who need to prepare a wired connection. There is no need to disassemble the protective device of the inverter, which reduces the safety hazards and equipment damage risks caused by disassembly. The operation is simple and improves the work efficiency of the operation and maintenance personnel in locating the inverter fault. The inverter does not need to be connected to the external network and is suitable for environments with poor network coverage.

[0080] Embodiment 3

[0081] In some embodiments, based on the method provided in Embodiment 1, the inverter is also connected to the analysis platform via wired communication, such as Figure 2 As shown, the method may further include the following steps:

[0082] S201, obtaining a fault recording file from a local disk of the inverter.

[0083] The analysis platform obtains the fault recording file from the local disk of the inverter.

[0084] S202, analyzing the fault recording file to obtain a fault waveform of the inverter.

[0085] The analysis platform parses the fault recording file to obtain the fault waveform of the inverter.

[0086] S203, locating the fault by analyzing the fault waveform.

[0087] The analysis platform locates faults by analyzing fault waveforms.

[0088] In the method provided by the embodiment of the present invention, the analysis platform can parse the fault recording file generated by the inverter, automatically locate the fault, and improve the work efficiency of locating the inverter fault.

[0089] Embodiment 4

[0090] In some embodiments, based on the method provided in the first embodiment, when the inverter is connected to the external network, the inverter is also wirelessly connected to the cloud file server, and the cloud includes the cloud file server and the cloud platform, such as Figure 2 As shown, the method may further include the following steps:

[0091] S204, the cloud file server receives and stores the fault recording file pushed by the inverter.

[0092] The fault recording file generated after the inverter fails is pushed to the inverter, and the cloud file server receives and stores the fault recording file.

[0093] S205, the cloud platform reads the fault recording file according to the serial number of the inverter.

[0094] Each inverter is pre-set with a serial number. After the cloud file server receives the fault recording file of the inverter, it transmits the serial number of the faulty inverter to the cloud platform. The cloud platform reads the fault recording file of the inverter based on the serial number of the inverter.

[0095] S206, the cloud platform analyzes the fault recording file to obtain the fault waveform of the inverter.

[0096] S207, the cloud platform locates the fault by analyzing the fault waveform.

[0097] In the method provided by the embodiment of the present invention, the inverter is connected to the external network and is wirelessly connected to the cloud file server. The cloud file server receives the fault recording file, and the cloud platform parses the fault recording file to obtain the fault waveform of the inverter, automatically locate the fault, and improve the work efficiency of locating the inverter fault.

[0098] Embodiment 5

[0099] An embodiment of the present invention provides a computer program product, which includes computer program instructions. When the instructions in the computer program product are executed by a processor of an electronic device, the electronic device executes the steps of the inverter, mobile terminal or analysis platform in the proximal analysis method of inverter fault recording of the various embodiments of the present invention described above in this specification.

[0100] The computer program product may be written in any combination of one or more programming languages ​​to write program code for performing the operations of the embodiments of the present invention, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0101] For the above-mentioned method embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the present invention is not limited by the order of the actions described, because according to the present invention, some steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0102] It should be noted that each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0103] The steps in the methods of the embodiments of the present invention may be adjusted in order, combined, or deleted according to actual needs, and the technical features recorded in the embodiments may be replaced or combined.

[0104] In the several embodiments provided by the present invention, it should be understood that the disclosed method can be implemented in other ways. For example, the terminal embodiment described above is only illustrative.

[0105] The steps of the method or algorithm described in conjunction with the embodiments disclosed herein may be implemented directly by hardware, software units executed by a processor, or a combination of the two. The software units may be placed in a random access memory (RAM), a memory, a read-only memory (ROM), an electrically programmable ROM, an electrically erasable programmable ROM, a register, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.

[0106] Finally, it should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0107] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A proximal analysis method for inverter fault recording, characterized in that: Applied to an inverter, the method comprises: When a fault occurs, the fault waveform is recorded to generate a fault recording file; storing the fault recording file to a local disk; so that the mobile terminal can display the fault waveform of the inverter after acquiring the fault recording file; A Bluetooth connection request from a mobile terminal is received, and a Bluetooth connection with the mobile terminal is established.

2. The method according to claim 1, characterized in that Before receiving the Bluetooth connection request from the mobile terminal, the method further includes: Record operating parameters when a fault occurs; The operating parameters are stored in a local disk so that the mobile terminal can replay the operating status of the inverter when a fault occurs after acquiring the operating parameters.

3. The method according to claim 1, characterized in that The inverter is also connected to the analysis platform via wired communication.

4. The method according to claim 1, characterized in that When the inverter is connected to the external network, the inverter is also wirelessly connected to the cloud file server.

5. A proximal analysis method for inverter fault recording, characterized in that: Applied to a mobile terminal, the method comprises: Sending a Bluetooth connection request to the inverter to establish a Bluetooth connection with the inverter; Acquire a fault recording file from a local disk of the inverter; Analyze the fault recording file to obtain a fault waveform; The fault waveform is shown.

6. The method according to claim 5, characterized in that After establishing a Bluetooth connection with the inverter, the method further includes: Acquire operating parameters from a local disk of the inverter; Based on the operating parameters, the operating state of the inverter when a fault occurs is replayed.

7. The method according to claim 6, characterized in that The replaying the operating state of the inverter when a fault occurs based on the operating parameters includes: Based on the operating parameters, displacement information of the operating parameters is plotted along a time axis.

8. The method according to claim 7, characterized in that The method further comprises: According to the operating parameters, the fault is located using preset rules.

9. A proximal analysis method for inverter fault recording, characterized in that: Applied to the analysis platform, the analysis platform and the inverter are connected via wired communication, the method includes: Acquire a fault recording file from a local disk of the inverter; Parsing the fault recording file to obtain a fault waveform of the inverter; The fault is located by analyzing the fault waveform.

10. An analysis method for inverter fault recording, characterized in that: Applied to the cloud, the cloud includes a cloud file server and a cloud platform. When the inverter is connected to the external network, the inverter is also wirelessly connected to the cloud file server. The method includes: The cloud file server receives and stores the fault recording file pushed by the inverter; The cloud platform reads the fault recording file according to the serial number of the inverter; The cloud platform parses the fault recording file to obtain the fault waveform of the inverter; and the cloud platform locates the fault by analyzing the fault waveform.

Images