CN118151084A - Voltage transformer secondary circuit monitoring method, system, electronic equipment and medium - Google Patents
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Abstract
The disclosure provides a method, a system, electronic equipment and a medium for monitoring a secondary circuit of a voltage transformer, and relates to the technical field of voltage transformers. Collecting a current signal and a voltage signal of a secondary loop of the voltage transformer; collecting real-time operation pictures of the secondary circuit of the voltage transformer; carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal; according to the processed current signal and the processed voltage signal, data analysis is carried out, and whether the secondary circuit of the voltage transformer fails or not is judged; and if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained. And the secondary circuit in the operation of the voltage transformer is monitored simultaneously in real time and in real time, when two-point grounding or multi-point grounding occurs, fault abnormality is timely judged, the duration of the two-point faults is greatly shortened by sending out an alarm, and the loss caused by the faults is reduced.
Description
Technical Field
The disclosure relates to the technical field of voltage transformers, and in particular relates to a method, a system, electronic equipment and a medium for monitoring a secondary circuit of a voltage transformer.
Background
The electromagnetic voltage transformer (Electromagnetic Potential Transformer, PT) is used as electrical equipment for connecting the primary system and the secondary system of the power grid, is arranged on each node of the power grid, and provides voltage signals for the secondary system under various operation conditions to reflect the operation information of the primary system, so that the measurement, monitoring, protection and control of the operation state of the power grid are realized.
However, the electromagnetic voltage transformer has higher fault probability and various fault reasons, and can cause misoperation or refusal of protection equipment to impact system operation equipment. A secondary loop two-point or multi-point ground fault is a power system fault in a voltage transformer and generally refers to a condition in which a short circuit or connection occurs between two or more conductors and ground in the secondary loop of the voltage transformer, resulting in a current flowing to ground in the secondary loop. Such faults may cause serious damage to the power system, such as equipment damage, instability of the power system, etc.
The prior art does not specifically monitor faults for two-point or multi-point grounding of a secondary circuit of a voltage transformer.
It should be noted that the information disclosed in the above background section is only for enhancing understanding of the background of the present disclosure and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure aims to provide a method, a system, electronic equipment and a medium for monitoring a secondary circuit of a voltage transformer, which at least overcome the problem that the two-point or multi-point grounding of the secondary circuit of the voltage transformer cannot be effectively monitored by the related art to a certain extent.
Other features and advantages of the present disclosure will be apparent from the following detailed description, or may be learned in part by the practice of the disclosure.
According to one aspect of the present disclosure, there is provided a voltage transformer secondary loop monitoring method including:
Collecting a current signal and a voltage signal of a secondary loop of the voltage transformer;
Collecting real-time operation pictures of the secondary circuit of the voltage transformer;
Carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal;
according to the processed current signal and the processed voltage signal, data analysis is carried out, and whether the secondary circuit of the voltage transformer fails or not is judged;
and if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained.
In one embodiment of the present disclosure, the collecting the current signal and the voltage signal of the secondary loop of the voltage transformer includes:
collecting current data and voltage data of a secondary loop of the voltage transformer through a current sensor and a voltage sensor respectively;
and converting the current data and the voltage data into a current signal and a voltage signal, wherein the voltage signal and the current signal are digital signals.
In one embodiment of the present disclosure, before the step of collecting the real-time running picture of the secondary circuit of the voltage transformer, the method includes: the sampling rate and the resolution of camera acquisition are preset.
In one embodiment of the present disclosure, the data preprocessing includes: outliers, missing values, and duplicate data are removed.
In one embodiment of the present disclosure, the data analysis is performed according to the processed current signal and the processed voltage signal, and determining whether the secondary circuit of the voltage transformer has a fault includes:
Determining a current phase difference and a voltage phase difference according to the processed current signal and the processed voltage signal;
judging whether the current phase difference and the voltage phase difference deviate from a preset threshold value or not;
and if the voltage transformer secondary circuit deviates from the preset threshold value, judging that the voltage transformer secondary circuit fails.
In one embodiment of the present disclosure, the method further comprises:
determining a measuring point corresponding to the deviation of the current phase difference and the voltage phase difference from the preset threshold;
and judging the fault point range of the secondary circuit of the voltage transformer according to the measuring point.
In one embodiment of the present disclosure, further comprising:
recording fault data when the fault alarm is sent out;
And judging the dangerous degree according to the fault data and the real-time operation picture.
According to another aspect of the present disclosure, there is provided a voltage transformer secondary loop monitoring device including:
the signal acquisition module is used for acquiring current signals and voltage signals of the secondary circuit of the voltage transformer;
the picture acquisition module is used for acquiring real-time operation pictures of the secondary circuit of the voltage transformer;
the signal processing module is used for carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal;
The fault analysis module is used for carrying out data analysis according to the processed current signals and the processed voltage signals and judging whether the secondary circuit of the voltage transformer has faults or not;
and the alarm module is used for sending out fault alarms if faults occur and acquiring the corresponding real-time running pictures.
According to still another aspect of the present disclosure, there is provided an electronic apparatus including:
A processor; and
A memory for storing executable instructions of the processor;
wherein the processor is configured to perform any of the above described voltage transformer secondary loop monitoring methods via execution of the executable instructions.
According to yet another aspect of the present disclosure, there is provided a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method of voltage transformer secondary loop monitoring of any one of the above.
The embodiment of the disclosure provides a secondary circuit monitoring method of a voltage transformer, which comprises the following steps: collecting a current signal and a voltage signal of a secondary loop of the voltage transformer; collecting real-time operation pictures of the secondary circuit of the voltage transformer; carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal; according to the processed current signal and the processed voltage signal, data analysis is carried out, and whether the secondary circuit of the voltage transformer fails or not is judged; and if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained. And the secondary circuit in the operation of the voltage transformer is monitored simultaneously by real-time data and real-time operation pictures, when two-point grounding or multi-point grounding occurs, fault abnormality is timely judged, the duration of the two-point faults is greatly shortened by sending out an alarm, and the loss caused by the faults is reduced.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 illustrates a schematic diagram of a secondary circuit monitoring scenario of a voltage transformer in an embodiment of the disclosure;
FIG. 2 is a schematic flow diagram of a method for monitoring a secondary circuit of a voltage transformer in an embodiment of the disclosure;
FIG. 3 is a schematic flow diagram of another method for monitoring a secondary circuit of a voltage transformer in an embodiment of the disclosure;
FIG. 4 shows a schematic diagram of a secondary circuit monitoring device for a voltage transformer in an embodiment of the disclosure; and
Fig. 5 shows a block diagram of a computer device in an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software or in one or more hardware modules or integrated circuits or in different networks and/or processor devices and/or microcontroller devices.
Referring to fig. 1, a schematic diagram of a secondary circuit monitoring scenario of a voltage transformer according to the present application is shown, wherein after data are collected by a current sensor 110, a voltage sensor 120 and a camera 130, the data are transmitted to a computer device 140 for data processing and analysis and judgment. The details are explained by the following examples.
Referring to fig. 2, which is a schematic flow chart of a secondary circuit monitoring method of a voltage transformer, in one embodiment of the present application, a secondary circuit monitoring method of a voltage transformer is provided, which includes:
The embodiment mainly aims at two-point or multi-point grounding faults of a secondary circuit of the voltage transformer, and refers to the condition that in the secondary circuit of the voltage transformer, short circuits or connections occur between two or more conductors and the ground, so that current flows to the ground in the secondary circuit.
Step S201, collecting a current signal and a voltage signal of a secondary circuit of a voltage transformer;
Specifically, a current sensor is used for collecting the current of a secondary loop of the voltage transformer, and a voltage sensor is used for collecting the voltage of the secondary loop. The secondary circuit two-point or multi-point grounding of the voltage transformer is monitored through the current sensor and the voltage sensor, so that whether the operation of the secondary circuit is abnormal or not can be found in time.
Step S202, collecting real-time operation pictures of the secondary circuit of the voltage transformer;
specifically, a camera is adopted to monitor the real-time running picture of the secondary circuit of the voltage transformer in real time. And acquiring a real-time running picture of the secondary circuit of the voltage transformer so as to confirm dangerous situations by combining the real-time picture when faults occur.
In a specific example, before the step of collecting the real-time running picture of the secondary circuit of the voltage transformer, the method includes: the sampling rate and the resolution of camera acquisition are preset.
When the camera collects data, parameters such as proper sampling rate, resolution and the like are set, and specific parameter values can be set according to actual collection requirements. After the real-time running picture is acquired, the picture is transmitted to the computer equipment at the same time, so that the accuracy and reliability of the acquired data are ensured. And meanwhile, the integrity and the real-time performance of the data are ensured.
Step S203, carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal;
In a specific example, the data preprocessing includes: outliers, missing values, and duplicate data are removed.
The pretreatment mainly comprises the steps of removing abnormal values, missing values, repeated data and the like, and removing the abnormal values, correcting errors and complementing the missing by cleaning the data. To ensure accuracy and reliability of the data. In addition, to ensure accuracy of the acquired real-time running picture, the computer device processes the picture after acquisition to ensure that the picture is clear.
Step S204, data analysis is carried out according to the processed current signal and the processed voltage signal, and whether the secondary circuit of the voltage transformer has faults or not is judged;
specifically, the computer equipment analyzes through an algorithm, and when the phase difference of the current and the voltage at the affected part deviates from a normal value, the phase difference is considered as a two-point ground fault of the secondary circuit, so that the judgment of the secondary circuit fault is realized. And the approximate range of the fault point can be judged through the affected measuring points.
Step S205, if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained.
Specifically, after the fault is determined in step S204, a fault alarm is issued immediately, and a real-time image of the voltage transformer corresponding to the fault is provided to the staff to assist in checking the determination condition. And the fault abnormality is timely judged, the two-point fault duration is greatly shortened by sending out an alarm, and the loss caused by the fault is reduced.
The method for monitoring the secondary circuit of the voltage transformer provided in the embodiment comprises the following steps:
Collecting a current signal and a voltage signal of a secondary loop of the voltage transformer; collecting real-time operation pictures of the secondary circuit of the voltage transformer; carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal; according to the processed current signal and the processed voltage signal, data analysis is carried out, and whether the secondary circuit of the voltage transformer fails or not is judged; and if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained. And the secondary circuit in the operation of the voltage transformer is monitored simultaneously by real-time data and real-time operation pictures, when two-point grounding or multi-point grounding occurs, fault abnormality is timely judged, the duration of the two-point fault is greatly shortened by sending out an alarm, and the loss caused by the fault is reduced. The secondary circuit of the voltage transformer is monitored at two or more points, and the large loss of the instrument caused by the two-point ground fault is avoided.
In one example, step S201 includes:
collecting current data and voltage data of a secondary loop of the voltage transformer through a current sensor and a voltage sensor respectively;
and converting the current data and the voltage data into a current signal and a voltage signal, wherein the voltage signal and the current signal are digital signals.
Specifically, the data collected by the current sensor and the voltage sensor are analog quantities, the analog quantity data are read by the AD collecting board card equipment, then the analog data are converted into digital signals suitable for being input by the collecting equipment, and the voltage signals and the current signals are converted into digital signals and are sent to a CPU of the computer equipment.
Referring to another flow chart of the secondary circuit monitoring method of the voltage transformer shown in fig. 3, in one example, step S204 includes:
Step S301, determining a current phase difference and a voltage phase difference according to the processed current signal and the processed voltage signal;
in the event of a fault, the phase difference between the current and voltage at the affected site will deviate from normal. Therefore, through detecting the current phase difference and the voltage phase difference, the operation condition of the secondary circuit of the voltage transformer can be monitored in real time.
Step S302, judging whether the current phase difference and the voltage phase difference deviate from a preset threshold value or not;
in normal operation, the voltage transformer can only be grounded at one point, and the secondary circuit of the current transformer is protected from being grounded. The ground current is prevented from being generated among a plurality of grounding points, and the information acquired by the voltage transformer is prevented from being interfered. The preset threshold is a secondary loop current phase difference and a voltage phase difference which are acquired in a normal running state.
And step S303, if the voltage transformer secondary circuit deviates from the preset threshold value, judging that the voltage transformer secondary circuit fails.
And if the current phase difference and the voltage phase difference deviate from the preset threshold value, considering the two-point or multi-point ground fault of the secondary loop. Through the detection of the current phase difference and the voltage phase difference, the secondary circuit of the voltage transformer can be monitored in real time, and the large loss of the instrument caused by the two-point ground fault is avoided.
In one example, the method further comprises:
Determining a measuring point corresponding to the deviation of the current phase difference and the voltage phase difference from the preset threshold; and judging the fault point range of the secondary circuit of the voltage transformer according to the measuring point.
Specifically, when the current phase difference and the voltage phase difference deviate from a preset threshold value, corresponding measurement points for current and voltage acquisition are determined. The approximate range of the fault point can be judged by the measurement point with deviation.
In one example, further comprising:
recording fault data when the fault alarm is sent out;
When a fault occurs, the alarm module responds to the fault alarm. Meanwhile, the alarm module records fault data, wherein the fault data comprise current signals, voltage signals, current phase differences, voltage phase differences and the like.
And judging the dangerous degree according to the fault data and the real-time operation picture.
Specifically, a real-time running picture of the voltage transformer is provided at the same time, the measuring point with faults can be roughly determined according to fault data, and the risk degree of the current faults can be judged after the real-time running picture obtained in real time is combined and analyzed through an image classification model. So that staff can make a coping strategy in time and assist management.
Referring to fig. 4, in another embodiment of the present application, a secondary circuit monitoring device 400 for a voltage transformer is provided, which includes:
the signal acquisition module 401 is used for acquiring current signals and voltage signals of a secondary circuit of the voltage transformer;
the picture acquisition module 402 is used for acquiring real-time operation pictures of the secondary circuit of the voltage transformer;
A signal processing module 403, configured to perform data preprocessing on the current data and the voltage data, to obtain a processed current signal and a processed voltage signal;
The fault analysis module 404 is configured to perform data analysis according to the processed current signal and the processed voltage signal, and determine whether the secondary circuit of the voltage transformer has a fault;
and the alarm module 405 is configured to send out a fault alarm if a fault occurs, and acquire the corresponding real-time running picture.
According to the secondary circuit monitoring device 400 of the voltage transformer, through the signal acquisition module 401, the picture acquisition module 402, the signal processing module 403, the fault analysis module 404 and the alarm module 405, real-time data and real-time operation pictures of the secondary circuit in operation of the voltage transformer are monitored simultaneously, when two-point grounding or multi-point grounding occurs, faults are judged to be abnormal in time, the duration of the two-point faults is greatly shortened by sending out an alarm, and loss caused by the faults is reduced. The secondary circuit of the voltage transformer is monitored at two or more points, and the large loss of the instrument caused by the two-point ground fault is avoided.
In still another embodiment of the present application, there is provided an electronic apparatus including:
A processor; and
A memory for storing executable instructions of the processor;
wherein the processor is configured to perform any of the above described voltage transformer secondary loop monitoring methods via execution of the executable instructions.
The electronic equipment provided by the embodiment can realize the method for monitoring the secondary circuit of the voltage transformer in the method embodiment. And will not be described in detail herein.
Those skilled in the art will appreciate that the various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" system.
An electronic device 500 according to such an embodiment of the invention is described below with reference to fig. 5. The electronic device 500 shown in fig. 5 is merely an example, and should not be construed as limiting the functionality and scope of use of embodiments of the present invention.
As shown in fig. 5, the electronic device 500 is embodied in the form of a general purpose computing device. The components of electronic device 500 may include, but are not limited to: the at least one processing unit 510, the at least one memory unit 520, and a bus 530 connecting the various system components, including the memory unit 520 and the processing unit 510.
Wherein the storage unit stores program code that is executable by the processing unit 510 such that the processing unit 510 performs steps according to various exemplary embodiments of the present invention described in the above section of the "exemplary method" of the present specification. For example, the processing unit 510 may perform a voltage transformer secondary loop monitoring method as in fig. 1.
The storage unit 520 may include readable media in the form of volatile storage units, such as Random Access Memory (RAM) 5201 and/or cache memory unit 5202, and may further include Read Only Memory (ROM) 5203.
The storage unit 520 may also include a program/utility 5204 having a set (at least one) of program modules 5205, such program modules 5205 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of which may include an implementation of a network environment.
Bus 530 may be one or more of several types of bus structures including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.
The electronic device 500 may also communicate with one or more external devices 600 (e.g., keyboard, pointing device, bluetooth device, etc.), one or more devices that enable a user to interact with the electronic device 500, and/or any device (e.g., router, modem, etc.) that enables the electronic device 500 to communicate with one or more other computing devices. Such communication may occur through an input/output (I/O) interface 550. Also, electronic device 500 may communicate with one or more networks such as a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the Internet, through network adapter 560. As shown, network adapter 560 communicates with other modules of electronic device 500 over bus 530. It should be appreciated that although not shown, other hardware and/or software modules may be used in connection with electronic device 500, including, but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, data backup storage systems, and the like.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a terminal device, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
In yet another embodiment of the present application, a computer readable storage medium is provided, on which a computer program is stored, which when executed by a processor, implements the method for monitoring a secondary loop of a voltage transformer as described in any one of the above.
In an exemplary embodiment of the present disclosure, a computer-readable storage medium having stored thereon a program product capable of implementing the method described above in the present specification is also provided. In some possible embodiments, the various aspects of the invention may also be implemented in the form of a program product comprising program code for causing a terminal device to carry out the steps according to the various exemplary embodiments of the invention as described in the "exemplary methods" section of this specification, when said program product is run on the terminal device.
A program product for implementing the above method according to an embodiment of the present invention is described, which may employ a portable compact disc read-only memory (CD-ROM) and comprise program code and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The computer readable signal medium may include a data signal propagated in baseband or as part of a carrier wave with readable program code embodied therein. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination of the foregoing. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C++ or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device, partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., connected via the Internet using an Internet service provider).
It should be noted that although in the above detailed description several modules or units of a device for action execution are mentioned, such a division is not mandatory. Indeed, the features and functionality of two or more modules or units described above may be embodied in one module or unit in accordance with embodiments of the present disclosure. Conversely, the features and functions of one module or unit described above may be further divided into a plurality of modules or units to be embodied.
Furthermore, although the steps of the methods in the present disclosure are depicted in a particular order in the drawings, this does not require or imply that the steps must be performed in that particular order, or that all illustrated steps be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
From the above description of embodiments, those skilled in the art will readily appreciate that the example embodiments described herein may be implemented in software, or may be implemented in software in combination with the necessary hardware. Thus, the technical solution according to the embodiments of the present disclosure may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disk, a mobile hard disk, etc.) or on a network, including several instructions to cause a computing device (may be a personal computer, a server, a mobile terminal, or a network device, etc.) to perform the method according to the embodiments of the present disclosure.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (10)
1. The utility model provides a voltage transformer secondary circuit monitoring method which is characterized in that the method comprises the following steps:
Collecting a current signal and a voltage signal of a secondary loop of the voltage transformer;
Collecting real-time operation pictures of the secondary circuit of the voltage transformer;
Carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal;
according to the processed current signal and the processed voltage signal, data analysis is carried out, and whether the secondary circuit of the voltage transformer fails or not is judged;
and if the fault occurs, a fault alarm is sent out, and the corresponding real-time running picture is obtained.
2. The method for monitoring the secondary circuit of the voltage transformer according to claim 1, wherein the step of collecting the current signal and the voltage signal of the secondary circuit of the voltage transformer comprises the steps of:
collecting current data and voltage data of a secondary loop of the voltage transformer through a current sensor and a voltage sensor respectively;
and converting the current data and the voltage data into a current signal and a voltage signal, wherein the voltage signal and the current signal are digital signals.
3. The method for monitoring the secondary circuit of the voltage transformer according to claim 1, wherein before the step of collecting the real-time operation picture of the secondary circuit of the voltage transformer, the method comprises the steps of: the sampling rate and the resolution of camera acquisition are preset.
4. The voltage transformer secondary circuit monitoring method of claim 1, wherein the data preprocessing comprises: outliers, missing values, and duplicate data are removed.
5. The method for monitoring a secondary circuit of a voltage transformer according to claim 1, wherein the determining whether the secondary circuit of the voltage transformer has a fault according to the processed current signal and the processed voltage signal by performing data analysis comprises:
determining a current phase difference and a voltage phase difference from the processed current signal and the processed voltage signal
Judging whether the current phase difference and the voltage phase difference deviate from a preset threshold value or not;
and if the voltage transformer secondary circuit deviates from the preset threshold value, judging that the voltage transformer secondary circuit fails.
6. The method of voltage transformer secondary circuit monitoring of claim 5, further comprising:
determining a measuring point corresponding to the deviation of the current phase difference and the voltage phase difference from the preset threshold;
and judging the fault point range of the secondary circuit of the voltage transformer according to the measuring point.
7. The method for monitoring a secondary circuit of a voltage transformer according to claim 1, further comprising:
recording fault data when the fault alarm is sent out;
And judging the dangerous degree according to the fault data and the real-time operation picture.
8. A voltage transformer secondary circuit monitoring device, characterized by comprising:
the signal acquisition module is used for acquiring current signals and voltage signals of the secondary circuit of the voltage transformer;
the picture acquisition module is used for acquiring real-time operation pictures of the secondary circuit of the voltage transformer;
the signal processing module is used for carrying out data preprocessing on the current data and the voltage data to obtain a processed current signal and a processed voltage signal;
The fault analysis module is used for carrying out data analysis according to the processed current signals and the processed voltage signals and judging whether the secondary circuit of the voltage transformer has faults or not;
and the alarm module is used for sending out fault alarms if faults occur and acquiring the corresponding real-time running pictures.
9. An electronic device, comprising:
A processor; and
A memory for storing executable instructions of the processor;
Wherein the processor is configured to perform the voltage transformer secondary loop monitoring method of any one of claims 1-7 via execution of the executable instructions.
10. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when executed by a processor, implements the voltage transformer secondary loop monitoring method of any one of claims 1 to 7.
Priority Applications (1)
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