Wave recording file interrogation optimization method based on HDR file key information index

Abstract

The invention provides a recording file interrogation optimization method based on HDR file key information indexes. S1, the power distribution terminal generates a wave recording file; s2, constructing an HDR file key information index convenient for subsequent key information processing; s3, taking the HDR file as an uploading file to reduce the data transmission quantity and reduce the load of a communication link; s4, analyzing the HDR file, and defining a target key recording file needing to be measured according to key information recorded in the HDR file; step S5, key recording file interrogation: according to the HDR key information index, issuing an interrogation command by the master station, intelligently carrying out recording interrogation on related terminals, and collecting key recording data; s6, preprocessing the key recording file, and carrying out preliminary screening and clearing; step S7, collecting the preprocessed key recording file data; according to the method, the communication pressure of the master station can be relieved, the uploading speed of important wave recording files is increased, and the analysis rate of distribution network operation abnormity or fault states is increased.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution automation, and in particular to a method for optimizing a recording file call based on an HDR file key information index. Background Art

[0002] The distribution automation system is an important part of the modern power system. It realizes real-time monitoring, protection, control and management of the distribution network through the integration of modern electronic technology, communication technology, computer and network technology. In the distribution automation system, the recording file records the key data when the power grid fails or is abnormal, which is an important basis for fault analysis and location.

[0003] However, the traditional test calling method using recording files has some drawbacks. First, the test calling efficiency is low. The traditional method traverses the recording files of all distribution terminals under the test calling bus, and the recording files usually contain a large amount of data. The entire test calling process is very time-consuming. Only after the test calling obtains the recording file can we know whether the waveform is useful. This process is time-consuming and laborious. Secondly, the communication load is heavy. During the test calling process, the entire recording file and the corresponding configuration file need to be uploaded, which greatly increases the burden on the communication network. In extreme scenarios, it may even cause network congestion or delays.

[0004] To address this problem, the present invention proposes a recording file call optimization method based on HDR file key information index, which aims to screen and call important and useful recording data, improve the recording file call efficiency, and alleviate communication pressure, which is of great significance to improving the performance and reliability of the distribution automation system. Summary of the invention

[0005] The present invention proposes a recording file call optimization method based on HDR file key information index, which can alleviate the communication pressure of the master station, improve the speed of uploading important recording files, and accelerate the analysis rate of abnormal or faulty distribution network operation.

[0006] The present invention adopts the following technical solutions.

[0007] A recording file call optimization method based on HDR file key information index is used to optimize the recording call process. The method improves the recording file call efficiency and reduces the communication load by only calling the target recording file, including the following steps: Step S1: The power distribution terminal generates a wave recording file; Step S2: constructing a key information index of the HDR file to facilitate subsequent key information processing; Step S3: Using the HDR file as the upload file to reduce the amount of data transmission and the load of the communication link; Step S4: HDR file analysis, accurately defining the target key recording file that needs to be called for testing based on the key information recorded in the uploaded HDR file; Step S5: Call for key recording files. According to the HDR key information index, the master station issues a call command to intelligently call for recordings on relevant terminals and collect key recording data. Step S6: pre-process the key recording files, and preliminarily screen and remove the recording data with abnormal waveform signal acquisition, partial waveform data missing, and packet loss; Step S7: Collect the pre-processed key recording file data and analyze the current operating status of the distribution network.

[0008] In step S1, when a line abnormality or fault triggers the terminal recording function, the distribution terminal captures and stores key data to form a recording file.

[0009] In step S1, the recording file is the key recording data carrier of the distribution terminal. The recording file of the recording data includes a configuration file, a data file, and an HDR file as a header file. The HDR file is used to record the key information of the recording data for the convenience of subsequent index construction. The size of the HDR file is much smaller than the data file.

[0010] The recording file of the recorded wave data includes a configuration file in a .cfg format, a data file in a .dat format, and a header file in a .hdr format.

[0011] In step S2, the HDR file key information index includes the key information of the recording trigger reason, whether the Beidou timing function is reliable, whether it is determined to be a ground fault, whether it is determined to be a short circuit fault, whether it is determined to be a capacitor switching, whether it is determined to be an excitation inrush current, and whether it is determined to be other interference.

[0012] The data body of the recording file is recorded by a data file in DAT format. In step S3, the size of the HDR file is much smaller than the data file in DAT format. Before the recording file call test is performed, the HDR files of all terminals affected by the abnormal or fault event are first uploaded, that is, the HDR file replaces the data file in DAT format to alleviate the transmission and communication pressure between the master station and the terminal.

[0013] In step S4, according to the key information recorded in all HDR files sent in step S3, the terminal corresponding to the key recording data is selected; In step S5, the call command calls for distribution terminal recording data that is strongly related to events related to this call command according to the target distribution terminal selected in step S4, that is, collects data file records in DAT format of these terminals.

[0014] In step S6, the waveform signal collection abnormality refers to the distortion of the collection signal caused by the aging of components due to the distribution terminal running in the outdoor environment for a long time.

[0015] In step S6, the missing of some waveform data refers to that the internal program of the power distribution terminal is imperfect, resulting in the non-standard waveform recording file generated and the missing of some important data.

[0016] In step S6, the lost waveform data refers to the transmission problem caused by the heavy communication load pressure at the power distribution terminal, and an unexpected situation in the transmission process, which causes part of the waveform data to be lost during the transmission process.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1) Record key information: Users can customize HDR files to record key information. This file can save important parameters and data on the line at the time of recording trigger. These data can be combined with other recording data for researchers to conduct deeper analysis.

[0018] 2) Waveform file call optimization: Utilize the key information recorded in the HDR file to quickly locate the distribution terminal that needs to be called for test, and avoid blindly calling for test waveform data of all terminals under the entire bus. It can accurately identify key waveforms and ensure that key waveform data can be called and transmitted first.

[0019] 3) Relieve communication pressure: In terms of file size, HDR files are much smaller than DAT files. The master station prioritizes calling HDR files, and then filters the DAT files that need to be called based on their content. This can effectively avoid redundant waveform data transmission, greatly reduce data transmission volume, and thus alleviate the communication pressure between the master station and the terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Attached Figure 1 It is a schematic diagram of a flow chart of a method for optimizing a recording file call test according to an embodiment of the present invention; Attached Figure 2 It is a schematic diagram of key information of an HDR file according to an embodiment of the present invention. DETAILED DESCRIPTION

[0021] As shown in the figure, a recording file call optimization method based on HDR file key information index is used to optimize the recording call process. The method improves the recording file call efficiency and reduces the communication load by only calling the target recording file, including the following steps: Step S1: The power distribution terminal generates a wave recording file; Step S2: constructing a key information index of the HDR file to facilitate subsequent key information processing; Step S3: Using the HDR file as the upload file to reduce the amount of data transmission and the load of the communication link; Step S4: HDR file analysis, accurately defining the target key recording file that needs to be called for testing based on the key information recorded in the uploaded HDR file; Step S5: Call for key recording files. According to the HDR key information index, the master station issues a call command to intelligently call for recordings on relevant terminals and collect key recording data. Step S6: pre-process the key recording files, and preliminarily screen and remove the recording data with abnormal waveform signal acquisition, partial waveform data missing, and packet loss; Step S7: Collect the pre-processed key recording file data and analyze the current operating status of the distribution network.

[0022] In step S1, when a line abnormality or fault triggers the terminal recording function, the distribution terminal captures and stores key data to form a recording file.

[0023] In step S1, the recording file is the key recording data carrier of the distribution terminal. The recording file of the recording data includes a configuration file, a data file, and an HDR file as a header file. The HDR file is used to record the key information of the recording data for the convenience of subsequent index construction. The size of the HDR file is much smaller than the data file.

[0024] The recording file of the recorded wave data includes a configuration file in a .cfg format, a data file in a .dat format, and a header file in a .hdr format.

[0025] In step S2, the HDR file key information index includes the key information of the recording trigger reason, whether the Beidou timing function is reliable, whether it is determined to be a ground fault, whether it is determined to be a short circuit fault, whether it is determined to be a capacitor switching, whether it is determined to be an excitation inrush current, and whether it is determined to be other interference.

[0026] In this example, in step S2, the key information index of the HDR file is generated according to the process of the distribution terminal generating the recording file and the working conditions involved in step S1.

[0027] The data body of the recording file is recorded by a data file in DAT format. In step S3, the size of the HDR file is much smaller than the data file in DAT format. Before the recording file call test is performed, the HDR files of all terminals affected by the abnormal or fault event are first uploaded, that is, the HDR file replaces the data file in DAT format to alleviate the transmission and communication pressure between the master station and the terminal.

[0028] In step S4, according to the key information recorded in all HDR files sent in step S3, the terminal corresponding to the key recording data is selected; In step S5, the call command calls for distribution terminal recording data that is strongly related to events related to this call command according to the target distribution terminal selected in step S4, that is, collects data file records in DAT format of these terminals.

[0029] In step S6, the waveform signal collection abnormality refers to the distortion of the collection signal caused by the aging of components due to the distribution terminal running in the outdoor environment for a long time.

[0030] In step S6, the missing of some waveform data refers to that the internal program of the power distribution terminal is imperfect, resulting in the non-standard waveform recording file generated and the missing of some important data.

[0031] In step S6, the lost waveform data refers to the transmission problem caused by the heavy communication load pressure at the power distribution terminal, and an unexpected situation in the transmission process, which causes part of the waveform data to be lost during the transmission process.

[0032] In this example, the HDR file is an XML file.

[0033] Example: This example proposes a recording file call optimization method based on the key information index of the HDR file. This method is helpful to alleviate the communication pressure of the master station, improve the speed of uploading important recording files, and speed up the analysis rate of abnormal or faulty distribution network operation.

[0034] To achieve the above purpose, Figure 1 As shown, this example provides a method for optimizing the recording file call based on the key information index of the HDR file. The core of this method is to construct the key information index of the HDR file, upload the HDR file, and parse the HDR file. Specifically, it includes the following steps: Step S1, the power distribution terminal generates a recording file. When a line abnormality or fault triggers the terminal recording function, the terminal captures and stores key data to form a recording file.

[0035] Furthermore, the recording file, as a carrier of recording data, usually records important electrical operation data such as line voltage and current. In the storage system of traditional power distribution terminals, recording data mainly consists of CFG files (configuration files) and DAT files (data files). On this basis, this method introduces HDR files (header files) as a new component, aiming to record the key information of recording data and facilitate subsequent index construction.

[0036] Step S2: constructing an index of key information of the HDR file to facilitate subsequent key information processing.

[0037] Furthermore, the HDR file key information index refers to, for example Figure 2The information shown includes but is not limited to the cause of the recording trigger, whether the Beidou timing function is reliable, whether it is determined to be a ground fault, whether it is determined to be a short circuit fault, whether it is determined to be a capacitor switching, whether it is determined to be an excitation inrush current, and whether it is determined to be other interference and other key information.

[0038] Step S3: Uploading the HDR file reduces the data transmission volume to reduce the communication load.

[0039] Furthermore, the HDR file uploading means that in terms of transmission pressure, the file size of HDR files is usually much smaller than that of DAT files. This feature allows the HDR files of all terminals affected by the abnormal or fault event to be uploaded first before the recording file call test, replacing the DAT files of all terminals in the traditional method, which greatly alleviates the transmission and communication pressure between the master station and the terminals.

[0040] Step S4, HDR file analysis, accurately defining the key recording files that need to be called for testing based on the key information recorded in the HDR file.

[0041] Furthermore, HDR file parsing refers to selecting a terminal corresponding to key recording data according to key information recorded in all HDR files sent in step S3.

[0042] Step S5, calling for key recording files: based on the HDR key information index, the master station issues a call command to intelligently call for recordings on related terminals and collect key recording data.

[0043] Furthermore, the wave calling command refers to calling for the distribution terminal wave recording data that is strongly related to the current event according to the target distribution terminal selected in step S4.

[0044] Step S6: pre-process key recording files, and perform preliminary screening and removal of recordings with abnormal signal acquisition, partial information missing, and packet loss.

[0045] Furthermore, the waveform signal collection anomaly refers to the fact that some distribution terminals have been operating in outdoor environments for a long time and their components have aged, resulting in distortion of the collected signals.

[0046] Furthermore, the missing of some waveform data refers to the fact that the internal programs of some distribution terminals are imperfect, resulting in the non-standard waveform recording files generated and the missing of some important data.

[0047] Furthermore, the packet loss recording refers to that some distribution terminals have transmission problems due to heavy communication load pressure, and unexpected events occur during the transmission process, resulting in the loss of some waveform data during the transmission process.

[0048] Step S7: collect key recording files and analyze the current operating status of the distribution network.

Claims

1. A recording file call optimization method based on HDR file key information index, used to optimize the recording call process, characterized in that: The method improves the recording file calling efficiency and reduces the communication load by calling only the target recording file, and comprises the following steps: Step S1: The power distribution terminal generates a wave recording file; Step S2: constructing a key information index of the HDR file to facilitate subsequent key information processing; Step S3: Using the HDR file as the upload file to reduce the amount of data transmission and the load of the communication link; Step S4: HDR file analysis, accurately defining the target key recording file that needs to be called for testing based on the key information recorded in the uploaded HDR file; Step S5: Call for key recording files. According to the HDR key information index, the master station issues a call command to intelligently call for recordings on relevant terminals and collect key recording data. Step S6: pre-process the key recording files, and preliminarily screen and remove the recording data with abnormal waveform signal acquisition, partial waveform data missing, and packet loss; Step S7: Collect the pre-processed key recording file data and analyze the current operating status of the distribution network.

2. The method for optimizing the recording file call based on the HDR file key information index according to claim 1, characterized in that: In step S1, when a line abnormality or fault triggers the terminal recording function, the distribution terminal captures and stores key data to form a recording file.

3. The method for optimizing the recording file call based on the HDR file key information index according to claim 1, characterized in that: In step S1, the recording file is the key recording data carrier of the distribution terminal. The recording file of the recording data includes a configuration file, a data file, and an HDR file as a header file. The HDR file is used to record the key information of the recording data for the convenience of subsequent index construction. The size of the HDR file is much smaller than the data file.

4. The method for optimizing the recording file call based on the HDR file key information index according to claim 3, characterized in that: The recording file of the recorded wave data includes a configuration file in a .cfg format, a data file in a .dat format, and a header file in a .hdr format.

5. The method for optimizing the recording file call based on the HDR file key information index according to claim 1, characterized in that: In step S2, the HDR file key information index includes the key information of the recording trigger reason, whether the Beidou timing function is reliable, whether it is determined to be a ground fault, whether it is determined to be a short circuit fault, whether it is determined to be a capacitor switching, whether it is determined to be an excitation inrush current, and whether it is determined to be other interference.

6. The method for optimizing the recording file call based on the HDR file key information index according to claim 1, characterized in that: The data body of the recording file is recorded by a data file in DAT format. In step S3, the size of the HDR file is much smaller than the data file in DAT format. Before the recording file call test is performed, the HDR files of all terminals affected by the abnormal or fault event are first uploaded, that is, the HDR file replaces the data file in DAT format to alleviate the transmission and communication pressure between the master station and the terminal.

7. The method for optimizing the recording file call based on the HDR file key information index according to claim 1, characterized in that: In step S4, according to the key information recorded in all HDR files sent in step S3, the terminal corresponding to the key recording data is selected; In step S5, the call command calls for distribution terminal recording data that is strongly related to events related to this call command according to the target distribution terminal selected in step S4, that is, collects data file records in DAT format of these terminals.

8. The method for optimizing the recording file recall based on the HDR file key information index according to claim 1, characterized in that: In step S6, the waveform signal collection abnormality refers to the distortion of the collection signal caused by the aging of components due to the distribution terminal running in the outdoor environment for a long time.

9. The method for optimizing the recording file recall based on the HDR file key information index according to claim 1, characterized in that: In step S6, the missing of some waveform data refers to that the internal program of the power distribution terminal is imperfect, resulting in the non-standard waveform recording file generated and the missing of some important data.

10. The method for optimizing the recording file recall based on the HDR file key information index according to claim 1, characterized in that: In step S6, the lost waveform data refers to the transmission problem caused by the heavy communication load pressure at the power distribution terminal, and an unexpected situation in the transmission process, which causes part of the waveform data to be lost during the transmission process.

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