Wide area measurement system measuring point association error detection method and system

Abstract

The invention discloses a measuring point association error detection method and system of a wide area measurement system. The method comprises the following steps: acquiring measuring point information of a phasor measuring device in the wide area measurement system, generating a system measuring point queue, acquiring access channel information of the phasor measuring device, generating a system channel queue, and acquiring associated primary equipment information of each measuring point and measuring point associated error detection configuration parameters; traversing the system measurement point queue, searching measurement points with the same measurement point name, performing measurement point association error analysis according to access channel information, measurement point IDs, association primary equipment information and measurement point association error detection configuration parameters of the measurement points, and when an error measurement point is positioned, performing measurement point association error detection; and automatically deleting the error measuring point in the measuring point table or setting the associated primary equipment information of the error measuring point in the measuring point table to be null, and writing the information of the modified measuring point into a measuring point associated abnormal result table of the database. According to the scheme of the invention, automatic discovery, deletion or modification of error measurement points in a wide area measurement system is realized.

Description

Technical Field

[0001] The present invention belongs to the field of wide - area measurement, and particularly relates to a method and system for detecting errors in the association of measurement points in a wide - area measurement system. Background Art

[0002] During the process of a wide - area measurement system accessing phasor measurement devices, it is necessary to associate the measurement points sent by the phasor measurement devices with the primary equipment of the power system in the wide - area measurement system. BUGs in the association program, operation errors of engineering personnel, system platform or database anomalies, etc. may all cause duplicate measurement points to appear in the system, resulting in errors in data storage, query, and use after the phasor measurement devices send data, affecting the data quality of the wide - area measurement system and the use of advanced application functions.

[0003] Currently, the data quality of wide - area measurement systems is poor. Usually, after anomalies occur in advanced application functions due to data quality problems, the reasons for data quality anomalies are manually investigated, and then corresponding rectifications are carried out, lacking automated maintenance means. Summary of the Invention

[0004] To solve the deficiencies in the prior art, the present invention provides a method and system for detecting errors in the association of measurement points in a wide - area measurement system to solve the technical problems of detecting duplicate measurement points in the wide - area measurement system, judging incorrect measurement points, and automatically deleting or modifying them.

[0005] To solve the above - mentioned technical problems, the present invention adopts the following technical solutions.

[0006] The present invention first discloses a method for detecting errors in the association of measurement points in a wide - area measurement system, which includes the following steps:

[0007] Step 1: Obtain the measurement point information of the phasor measurement devices in the wide - area measurement system to generate a system measurement point queue, obtain the access channel information of the phasor measurement devices to generate a system channel queue, and obtain the associated primary equipment information of each measurement point and the configuration parameters for detecting errors in the association of measurement points.

[0008] Step 2: Traverse the system measurement point queue to find measurement points with the same name. Conduct an analysis of errors in the association of measurement points based on the access channel information, measurement point ID, associated primary equipment information of the measurement points, and the configuration parameters for detecting errors in the association of measurement points. When an incorrect measurement point is located, automatically delete the incorrect measurement point in the measurement point table or set the associated primary equipment information of the incorrect measurement point in the measurement point table to null, and write the information of the modified measurement point into the measurement point association exception result table in the database.

[0009] The present invention further includes the following preferred solutions:

[0010] The system measurement point queue includes: measurement point ID, measurement point name, ID and name of the pre-channel to which the measurement point belongs, ID and name of the associated primary equipment, and the substation to which it belongs.

[0011] The system channel queue includes channel ID, link description, and substation ID to which it belongs.

[0012] The configuration parameters for detecting measurement point association errors include upper and lower threshold values for abnormal active power ratios, upper and lower threshold values for abnormal voltage ratios, and upper and lower threshold values for abnormal current ratios.

[0013] The information of the associated primary equipment includes the rated voltage, rated current, and rated power of all associated primary equipment.

[0014] The analysis of measurement point association errors based on the access channel information, measurement point ID, information of associated primary equipment, and configuration parameters for detecting measurement point association errors further includes:

[0015] a) Check whether the channel ID to which the current measurement point belongs exists in the system channel queue: If it does not exist, the current measurement point is an incorrect measurement point. Automatically delete the current measurement point from the measurement point table, write the information of the deleted measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point;

[0016] b) If the duplicate measurement points only have different measurement point IDs, the measurement point with the smaller measurement point ID is the incorrect measurement point. Automatically delete the measurement point from the measurement point table, write the information of the deleted measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point;

[0017] c) Obtain the data of all measurement points with the name of the current measurement point in the most recent 1 second, as well as the rated voltage, rated current, and rated power of the associated primary equipment; If data can be obtained for one of the measurement points, proceed to the next step of analysis:

[0018] i. If the measurement point type is active power, calculate the ratio of the obtained data to the rated power of the primary equipment; If this ratio is greater than the upper threshold value of the abnormal active power ratio or less than the lower threshold value of the abnormal active power ratio, determine the measurement point from which the data is obtained as the incorrect measurement point; otherwise, determine the measurement point from which no data is obtained as the incorrect measurement point. Automatically set the information of the associated primary equipment of the measurement point in the measurement point table to be empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point;

[0019] ii. If the measurement point type is UAA, UBA, UCA or U1A, calculate the ratio of the acquired data to the rated voltage of the primary equipment; if the ratio is greater than the abnormal upper limit threshold of the voltage ratio or less than the abnormal lower limit threshold of the voltage ratio, determine the measurement point with the acquired data as an incorrect measurement point, otherwise determine the measurement point without acquired data as an incorrect measurement point; automatically set the associated primary equipment information of this measurement point in the measurement point table to empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point;

[0020] iii. If the measurement point type is IAA, IBA, ICA or I1A, calculate the ratio of the acquired data to the rated current of the primary equipment; if the ratio is greater than the abnormal upper limit threshold of the current ratio or less than the abnormal lower limit threshold of the current ratio, determine the measurement point with the acquired data as an incorrect measurement point, otherwise determine the measurement point without acquired data as an incorrect measurement point; automatically set the associated primary equipment information of this measurement point in the measurement point table to empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point.

[0021] Restore the automatically deleted or modified measurement point information through the measurement point anomaly association monitoring interface.

[0022] The present invention also discloses a wide-area measurement system measurement point association error detection system using the foregoing wide-area measurement system measurement point association error detection method, including:

[0023] An acquisition module for acquiring the measurement point information of the phasor measurement device in the wide-area measurement system, generating a system measurement point queue, acquiring the access channel information of the phasor measurement device, generating a system channel queue, and acquiring the associated primary equipment information of each measurement point and the measurement point association error detection configuration parameters;

[0024] An association analysis module for traversing the system measurement point queue, finding measurement points with the same measurement point name, performing measurement point association error analysis based on the access channel information, measurement point ID, associated primary equipment information and measurement point association error detection configuration parameters of the measurement point, and when an incorrect measurement point is located, automatically deleting the incorrect measurement point in the measurement point table or setting the associated primary equipment information of this incorrect measurement point in the measurement point table to empty, and writing the information of the modified measurement point into the measurement point association abnormal result table in the database.

[0025] Correspondingly, the present application also discloses a terminal, including a processor and a storage medium;

[0026] The storage medium is used for storing instructions;

[0027] The processor is used for operating according to the instructions to execute the steps of the foregoing wide-area measurement system measurement point association error detection method.

[0028] Accordingly, the present application also discloses a computer-readable storage medium, on which a computer program is stored. When the program is executed by a processor, the steps of the aforementioned method for detecting errors in the association of measuring points in a wide-area measurement system are implemented.

[0029] The beneficial effects of the present invention are as follows. Compared with the prior art, the present invention provides a method and a system for detecting errors in the association of measuring points in a wide-area measurement system, which can locate specific error measuring points and automatically delete and modify them, reducing the workload of engineering operation and maintenance and improving the data quality of the wide-area measurement system. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a flowchart of the method for detecting errors in the association of measuring points in the wide-area measurement system of the present invention.

[0031] Figure 2 is an interface diagram of the system for detecting errors in the association of measuring points in the wide-area measurement system of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0033] The embodiments described in the present application are only a part of the embodiments of the present invention, rather than all of them. Based on the spirit of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] Aiming at the deficiencies of the prior art, the present invention proposes a method and a system for detecting errors in the association of measuring points in a wide-area measurement system, which directly locate error measuring points through abnormal information of duplicate measuring points and automatically delete or modify the error measuring points.

[0035] See Figure 1 As shown, the method for detecting errors in the association of measuring points in the wide-area measurement system disclosed by the present invention includes the following steps:

[0036] Step 1: Obtain the measuring point information of the phasor measurement devices in the wide-area measurement system, generate a system measuring point queue, obtain the access channel information of the phasor measurement devices, generate a system channel queue, and obtain the associated primary equipment information of each measuring point and the configuration parameters for detecting errors in the association of measuring points.

[0037] In a specific embodiment, the step 1 further includes:

[0038] Obtain the information of all measuring points in the phasor measurement device measuring point table of the wide area measurement system, and generate a system measuring point queue sorted in ascending order by measuring point name and measuring point ID, including: measuring point ID, measuring point name, ID and name of the pre - installed channel to which the measuring point belongs, ID and name of the associated primary equipment, the substation to which it belongs, etc.

[0039] Obtain the access channel information of all phasor measurement devices in the wide area measurement system, and generate a system channel queue, including channel ID, link description, and substation ID to which it belongs.

[0040] Obtain the rated voltage, rated current, and rated power of all associated primary equipment.

[0041] Obtain the error detection configuration parameters for measuring point association, including: upper and lower limit thresholds for abnormal active power ratio, upper and lower limit thresholds for abnormal voltage ratio, and upper and lower limit thresholds for abnormal current ratio.

[0042] Step 2: Traverse the system measuring point queue, find the measuring points with the same measuring point name, perform error analysis for measuring point association according to the access channel information, measuring point ID, associated primary equipment information, and error detection configuration parameters for measuring point association of the measuring points. When an error - prone measuring point is located, automatically delete the error - prone measuring point in the measuring point table or set the associated primary equipment information of the error - prone measuring point in the measuring point table to be empty, and write the information of the modified measuring point into the measuring point association abnormal result table in the database.

[0043] Specifically:

[0044] a) Check whether the channel ID to which the current measuring point belongs exists in the system channel queue: If it does not exist, then the current measuring point is an error - prone measuring point, automatically delete the current measuring point in the measuring point table, write the information of the deleted measuring point into the measuring point association abnormal result table in the database, and continue to analyze the next measuring point.

[0045] b) If the duplicate measuring points only have different measuring point IDs, then the measuring point with the smaller measuring point ID is the error - prone measuring point, automatically delete the measuring point in the measuring point table, write the information of the deleted measuring point into the measuring point association abnormal result table in the database, and continue to analyze the next measuring point.

[0046] c) Obtain the data of all measuring points with the current measuring point name in the last 1 second, as well as the rated voltage, rated current, and rated power of the associated primary equipment; if data can be obtained for one of the measuring points, then proceed to the next step of analysis:

[0047] i. If the measurement point type is active power, calculate the ratio of the acquired data to the rated power of the primary equipment; if the ratio is greater than the upper threshold of the abnormal active power ratio or less than the lower threshold of the abnormal active power ratio, determine the measurement point with the acquired data as an incorrect measurement point, otherwise determine the measurement point without acquired data as an incorrect measurement point; automatically set the associated primary equipment information of this measurement point in the measurement point table to empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point.

[0048] ii. If the measurement point type is UAA, UBA, UCA or U1A, calculate the ratio of the acquired data to the rated voltage of the primary equipment; if the ratio is greater than the upper threshold of the abnormal voltage ratio or less than the lower threshold of the abnormal voltage ratio, determine the measurement point with the acquired data as an incorrect measurement point, otherwise determine the measurement point without acquired data as an incorrect measurement point; automatically set the associated primary equipment information of this measurement point in the measurement point table to empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point.

[0049] iii. If the measurement point type is IAA, IBA, ICA or I1A, calculate the ratio of the acquired data to the rated current of the primary equipment; if the ratio is greater than the upper threshold of the abnormal current ratio or less than the lower threshold of the abnormal current ratio, determine the measurement point with the acquired data as an incorrect measurement point, otherwise determine the measurement point without acquired data as an incorrect measurement point; automatically set the associated primary equipment information of this measurement point in the measurement point table to empty, write the information of the modified measurement point into the measurement point association abnormal result table in the database, and continue to analyze the next measurement point.

[0050] The wide-area measurement system measurement point association error detection system proposed by the present invention consists of an automatic detection background and a measurement point anomaly association monitoring interface module. The automatic detection background is the specific implementation of the wide-area measurement system measurement point association error detection method proposed by the present invention. The measurement point anomaly association monitoring interface module is used to view and display the measurement point information that has been automatically deleted or modified, and to restore the measurement point information that has been automatically deleted or modified. Click "Undo Selected Records" to restore the deleted or modified measurement point information and delete this record in the measurement point association abnormal result table in the database.

[0051] The beneficial effect of the present invention is that, compared with the prior art, the present invention provides a wide-area measurement system measurement point association error detection method and system, which can locate specific incorrect measurement points and automatically delete and modify them, reducing the engineering operation and maintenance workload and improving the data quality of the wide-area measurement system.

[0052] The present invention can be a system, a method, and / or a computer program product. The present invention also discloses a wide-area measurement system measurement point association error detection system based on the aforementioned wide-area measurement system measurement point association error detection method, including:

[0053] An acquisition module, configured to acquire measuring point information of a phasor measurement unit in a wide area measurement system, generate a system measuring point queue, acquire access channel information of the phasor measurement unit, generate a system channel queue, and acquire associated primary equipment information of each measuring point and measuring point association error detection configuration parameters;

[0054] An association analysis module, configured to traverse the system measuring point queue, find measuring points with the same measuring point name, perform measuring point association error analysis according to the access channel information, measuring point ID, associated primary equipment information of the measuring point, and measuring point association error detection configuration parameters. When an error measuring point is located, automatically delete the error measuring point in the measuring point table or set the associated primary equipment information of the error measuring point in the measuring point table to be empty, and write the information of the modified measuring point into the measuring point association exception result table in the database.

[0055] Based on the spirit of the present invention, those skilled in the art can easily think of a computer program product based on the foregoing wide area measurement system measuring point association error detection method. The computer program product may include a computer-readable storage medium, on which computer-readable program instructions for causing a processor to implement various aspects of the present disclosure are loaded. That is, the present application also includes a terminal, including a processor and a storage medium; the storage medium is used to store instructions; the processor is used to operate according to the instructions to execute the steps according to the foregoing wide area measurement system measuring point association error detection method.

[0056] A computer-readable storage medium may be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium may be, for example, - but not limited to - an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing. More specific examples (non-exhaustive list) of a computer-readable storage medium include: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a static random access memory (SRAM), a portable compact disc read-only memory (CD-ROM), a digital versatile disc (DVD), a memory stick, a floppy disk, a mechanical encoding device, such as a punched card or raised structures in a groove storing instructions thereon, and any suitable combination of the foregoing. The computer-readable storage medium used herein is not construed as an instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through an optical fiber cable), or electrical signals transmitted through wires.

[0057] The computer-readable program instructions described herein can be downloaded to various computing / processing devices from a computer-readable storage medium or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network may include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in each computing / processing device.

[0058] The computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, by using the state information of the computer-readable program instructions to customize an electronic circuit, such as a programmable logic circuit, a field-programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit can execute the computer-readable program instructions to implement various aspects of the present disclosure.

[0059] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention, and any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A method for detecting measurement point association errors in a wide area measurement system, characterized in that: The following steps are involved: Step 1: obtaining the measuring point information of the phasor measuring device in the wide area measurement system, generating a system measuring point queue, obtaining the access channel information of the phasor measuring device, generating a system channel queue, and obtaining the associated primary device information of each measuring point and the measuring point associated error detection configuration parameters; Step 2: Traverse the system measurement point queue to find the measurement points with the same measurement point name, and perform measurement point association error analysis based on the measurement point's access channel information, measurement point ID, associated primary device information and measurement point association error detection configuration parameters. When the error measurement point is located, the error measurement point in the measurement point table is automatically deleted or the associated primary device information of the error measurement point in the measurement point table is set to empty, and the information of the modified measurement point is written into the measurement point association abnormality result table of the database.

2. The method for detecting measurement point association errors in a wide area measurement system according to claim 1, characterized in that: The system measurement point queue includes: measurement point ID, measurement point name, front channel ID and name to which the measurement point belongs, ID and name of the associated primary equipment, and the plant station to which it belongs.

3. The method for detecting measurement point association errors in a wide area measurement system according to claim 2, characterized in that: The system channel queue includes a channel ID, a link description and an ID of the plant to which it belongs.

4. The method for detecting measurement point association errors in a wide area measurement system according to claim 3, characterized in that: The measurement point associated error detection configuration parameters include upper and lower thresholds for abnormal active ratio, upper and lower thresholds for abnormal voltage ratio, and upper and lower thresholds for abnormal current ratio.

5. The method for detecting measurement point association errors in a wide area measurement system according to claim 4, characterized in that: The associated primary equipment information includes the rated voltage, rated current and rated power of all associated primary equipment.

6. The wide area measurement system measurement point association error detection system according to claim 5, characterized in that: The performing of the measurement point association error analysis according to the access channel information of the measurement point, the measurement point ID, the associated primary device information and the measurement point association error detection configuration parameters further includes: a) Check whether the channel ID of the current measuring point exists in the system channel queue: if not, the current measuring point is an error measuring point, and the current measuring point in the measuring point table is automatically deleted, and the information of the deleted measuring point is written into the measuring point associated abnormal result table of the database, and the analysis of the next measuring point continues; b) If the duplicate measuring points differ only in the measuring point ID, the measuring point with the smaller measuring point ID is the wrong measuring point, and the measuring point in the measuring point table is automatically deleted, and the information of the deleted measuring point is written into the measuring point associated abnormal result table of the database, and the analysis continues to the next measuring point; c) Obtain the data of the last 1 second for all measuring points of the current measuring point name, as well as the rated voltage, rated current, and rated power of the associated primary equipment; if data can be obtained from one of the measuring points, proceed to the next step of analysis: i. If the measuring point type is active, the ratio of the acquired data to the rated power of the primary equipment is calculated; if the ratio is greater than the upper threshold of the active ratio abnormality, or less than the lower threshold of the active ratio abnormality, the measuring point where the data is acquired is determined as an error measuring point, otherwise the measuring point where no data is acquired is determined as an error measuring point; the associated primary equipment information of the measuring point in the measuring point table is automatically set to null, the information of the modified measuring point is written into the measuring point associated abnormal result table of the database, and the analysis of the next measuring point continues; ii. If the measuring point type is UAA, UBA, UCA or U1A, the ratio of the acquired data to the rated voltage of the primary equipment is calculated; if the ratio is greater than the voltage ratio abnormal upper limit threshold, or the ratio is less than the voltage ratio abnormal lower limit threshold, the measuring point where the data is acquired is determined as an error measuring point, otherwise the measuring point where no data is acquired is determined as an error measuring point; the associated primary equipment information of the measuring point in the measuring point table is automatically set to null, the information of the modified measuring point is written into the measuring point associated abnormal result table of the database, and the analysis of the next measuring point continues; iii. If the measuring point type is IAA, IBA, ICA or I1A, the ratio of the acquired data to the rated current of the primary device is calculated; if the ratio is greater than the abnormal upper limit threshold of the current ratio, or the ratio is less than the abnormal lower limit threshold of the current ratio, the measuring point where the data is acquired is determined as an erroneous measuring point, otherwise the measuring point where no data is acquired is determined as an erroneous measuring point; the associated primary device information of the measuring point in the measuring point table is automatically set to empty, the information of the modified measuring point is written into the measuring point associated abnormal result table of the database, and the analysis of the next measuring point continues.

7. The wide area measurement system measurement point association error detection system according to claim 6, characterized in that: Further including: Restore automatically deleted or modified measuring point information through the measuring point abnormality association monitoring interface.

8. A wide area measurement system measurement point association error detection system, characterized in that: include: An acquisition module is used to acquire the measurement point information of the phasor measurement device in the wide area measurement system, generate a system measurement point queue, acquire the access channel information of the phasor measurement device, generate a system channel queue, and acquire the associated primary device information of each measurement point and the measurement point associated error detection configuration parameters; The association analysis module is used to traverse the system measurement point queue, find the measurement points with the same measurement point name, and perform measurement point association error analysis based on the access channel information, measurement point ID, associated primary device information and measurement point association error detection configuration parameters of the measurement point. When the error measurement point is located, the error measurement point in the measurement point table is automatically deleted or the associated primary device information of the error measurement point in the measurement point table is set to empty, and the information of the modified measurement point is written into the measurement point association abnormal result table of the database.

9. A terminal comprising a processor and a storage medium; characterized in that: The storage medium is used to store instructions; The processor is used to operate according to the instruction to execute the steps of the method for detecting measurement point association errors in a wide area measurement system according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the steps of the method for detecting measurement point association errors in a wide area measurement system according to any one of claims 1 to 7 are implemented.

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