CN116124903B - Defect early warning method, device, system, equipment and medium for insulator - Google Patents
Defect early warning method, device, system, equipment and medium for insulator Download PDFInfo
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- CN116124903B CN116124903B CN202310389435.9A CN202310389435A CN116124903B CN 116124903 B CN116124903 B CN 116124903B CN 202310389435 A CN202310389435 A CN 202310389435A CN 116124903 B CN116124903 B CN 116124903B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4445—Classification of defects
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/14—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object using acoustic emission techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4409—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison
- G01N29/4427—Processing the detected response signal, e.g. electronic circuits specially adapted therefor by comparison with stored values, e.g. threshold values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/44—Processing the detected response signal, e.g. electronic circuits specially adapted therefor
- G01N29/4472—Mathematical theories or simulation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The invention discloses a defect early warning method, device, system, equipment and medium for an insulator. The method comprises the following steps: acquiring description information of at least one core rod defect matched with electric field data of a target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator; obtaining the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the description information of the core rod defect and the umbrella skirt defect of the target insulator; calculating to obtain the total defect score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator; and performing defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator. By adopting the technical scheme, each defect of the insulator can be accurately positioned, and defect early warning is carried out on the insulator.
Description
Technical Field
The invention relates to the technical field of power equipment detection, in particular to a defect early warning method, device, system, equipment and medium for an insulator.
Background
The composite insulator is widely applied to power transmission lines due to the excellent mechanical property and anti-pollution flashover property. As an important component of the power transmission line, the insulator can directly influence the safe and stable operation of the whole power system. In the operation process of the power system, once the insulator is damaged or broken, power failure of a power transmission line or power equipment can be caused, and further industrial or residential power utilization is affected. Therefore, defect detection is required to be performed on the insulator so that an electric power operation and maintenance department can timely find the insulator with potential safety hazards.
The existing compound insulator in net hanging operation has the problems of brittle failure, crisp fracture, flashover, umbrella skirt damage, bird pecking damage and the like. The existing insulator defect detection methods are more, but each detection method can detect single defect type, can not well identify and detect multiple defects of the composite insulator at the same time, most detection methods can only identify approximate damage positions of the insulator, are unfavorable for quick detection and judgment of service life of the insulator, take too long, and part of detection methods are easily influenced by subjective factors of test environments and testers or are not suitable for field measurement.
Disclosure of Invention
The invention provides a defect early warning method, device, system, equipment and medium for an insulator, which can accurately position each defect of the insulator and perform defect early warning on the insulator.
According to an aspect of the present invention, there is provided a defect early warning method of an insulator, including:
acquiring description information of at least one core rod defect matched with electric field data of a target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator;
obtaining the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the description information of the core rod defect and the umbrella skirt defect of the target insulator;
calculating to obtain the total defect score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator;
and performing defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator.
According to another aspect of the present invention, there is provided a defect warning apparatus of an insulator, comprising:
The defect description information acquisition module is used for acquiring description information of at least one core rod defect matched with the electric field data of the target insulator and acquiring description information of at least one umbrella skirt defect matched with the ultrasonic guided wave data of the target insulator;
the defect scoring calculation module is used for acquiring the defect scores, the defect type weights and the defect position weights of all the core rod defects and all the umbrella skirt defects of the target insulator according to the description information of the core rod defects and the umbrella skirt defects of the target insulator;
the defect total score calculation module is used for calculating the defect total score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator;
and the defect early warning module is used for carrying out defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator.
According to another aspect of the invention, an insulator defect early warning system is provided, which comprises an ultrasonic transmitting end, an electric field distribution measuring terminal, an ultrasonic guided wave detecting terminal and a data analyzing terminal;
the ultrasonic transmitting end is used for providing a detection electric field and ultrasonic guided waves;
The electric field distribution measurement terminal is used for collecting electric field data of the insulator and sending the electric field data of the insulator to the data analysis terminal;
the ultrasonic guided wave detection terminal is used for collecting ultrasonic guided wave data of the insulator and sending the ultrasonic guided wave data of the insulator to the data analysis terminal;
the data analysis terminal is used for executing the defect early warning method of the insulator according to any embodiment of the invention.
According to another aspect of the present invention, there is provided an electronic apparatus including:
at least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the method for defect warning of an insulator according to any one of the embodiments of the present invention.
According to another aspect of the present invention, there is provided a computer readable storage medium storing computer instructions for causing a processor to execute the method for defect early warning of an insulator according to any one of the embodiments of the present invention.
According to the technical scheme, the core rod defects and the umbrella skirt defects of the target insulator are obtained according to the description information of the core rod defects and the umbrella skirt defects of the target insulator, the defect scores, the defect type weights and the defect position weights of the core rod defects and the umbrella skirt defects of the target insulator are obtained, and the defect total score of the target insulator is obtained through calculation according to the score values and the weight values of the defects, so that the defects on the core rod and the umbrella skirt of the insulator can be accurately positioned in a corresponding defect early warning mode according to the defect total score and the environmental information of the insulator, various types of defects can be detected in real time, the defect detection efficiency of the insulator is improved, meanwhile, defect early warning can be sent to technicians in time, so that the aged insulator can be checked or maintained in time, and the use safety of the insulator and the electricity safety of a power transmission line are guaranteed.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the invention or to delineate the scope of the invention. Other features of the present invention will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a defect early warning method for an insulator according to a first embodiment of the present invention;
fig. 2 is a flowchart of another defect early warning method for an insulator according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a defect early warning device for an insulator according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of an insulator defect early warning system according to a fourth embodiment of the present invention;
fig. 5 is a schematic structural diagram of an electronic device implementing a defect early warning method of an insulator according to an embodiment of the present invention.
Description of the embodiments
In order that those skilled in the art will better understand the present invention, a technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present invention and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
Fig. 1 is a flowchart of a defect early warning method for an insulator according to an embodiment of the present invention, where the method may be implemented by a defect early warning device for an insulator, the defect early warning device for an insulator may be implemented in hardware and/or software, and the defect early warning device for an insulator may be configured in a data analysis terminal in an insulator defect early warning system with a data processing function. As shown in fig. 1, the method includes:
S110, acquiring description information of at least one core rod defect matched with electric field data of the target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator.
The application is applicable to insulators with core rods and umbrella skirt structures, and generally can refer to composite insulators, wherein the core rods of the composite insulators are positioned in the umbrella skirt structures, and the core rods and the umbrella skirt jointly form the composite insulators.
The target insulator may refer to an insulator currently performing defect detection.
Optionally, the description information of the core rod defect may include a core rod defect position and a core rod defect type; the descriptive information of the umbrella skirt defect can comprise the umbrella skirt defect position and the umbrella skirt defect type; the defect location may describe all location information of the defect on the target insulator from the defect start point to the defect end point.
Optionally, the electric field data of the target insulator can be obtained through an insulator electric field distribution measurement terminal, and the ultrasonic guided wave data of the target insulator can be obtained through an insulator ultrasonic guided wave detection terminal.
According to the application, the fact that the insulator core rod and the umbrella skirt are difficult to distinguish through the same group of data and accurately judge the defects is considered, so that the method and the device respectively acquire the description information of the core rod defects and the description information of the umbrella skirt defects in a mode of respectively detecting the electric field data and the ultrasonic guided wave data of the target insulator, and therefore, the defects on the insulator core rod and the umbrella skirt are accurately detected.
It can be understood that the electric field distribution curve of the target insulator can be generated according to the electric field data of the target insulator, when no defect exists in the insulator core rod, the electric field distribution curve is generally a smooth U-shaped curve, when a defect exists in the insulator core rod, the electric field distribution curve is in a sinking state at each defect, the defect position of each core rod defect can be determined through the sinking curve coordinates of each section in the electric field distribution curve, and the defect type of each core rod defect can be determined by comparing the sinking curve shape of each section in the electric field distribution curve with the standard sinking curve shape of each type of defect in the database.
Alternatively, the defect types of the core rod defect may include core rod brittle fracture, core rod decay fracture, and the like.
Furthermore, the ultrasonic guided wave data of the target insulator may include core rod data and umbrella skirt data, but the core rod defect is obtained through the electric field data of the target insulator, so that the ultrasonic guided wave data can be filtered, only the umbrella skirt data in the ultrasonic guided wave data is extracted to detect the umbrella skirt defect, and the defect detection efficiency and the defect detection accuracy can be improved.
The ultrasonic echo signals in the ultrasonic guided wave data have the characteristic of respectively rebounding at the front end and the rear end of the defect, so that the size of the umbrella skirt defect of each umbrella skirt defect can be obtained by only calculating the time difference between the front edge signal and the rear edge signal of the umbrella skirt defect, and further, the central position of the umbrella skirt defect of each umbrella skirt defect can be calculated according to the time difference between the first ultrasonic echo signal of the target insulator and the first defect echo signal of the umbrella skirt defect, so that the central position of the umbrella skirt defect is determined according to the size of the umbrella skirt defect and the central position of the umbrella skirt defect.
Alternatively, the defect types of the umbrella skirt defect may include bird pecking damage, umbrella skirt damage, insulator flashover, and the like.
S120, obtaining the defect scores, the defect type weights and the defect position weights of all the core rod defects and all the umbrella skirt defects of the target insulator according to the description information of the core rod defects and the umbrella skirt defects of the target insulator.
Optionally, after the description information of each defect is obtained, the aging index of the position where each defect is located may be calculated by a preset aging index calculation rule, the aging index may be defined in a range of 0-100, and further the aging state of each defect may be determined according to the aging index of each defect position, where the aging state may be classified into good, mild degradation, moderate degradation, severe degradation, and the like, and each aging state may have a matched quantized value as a defect score, for example, 0, 1, 2, 3, and the like.
In a specific example, the different aging states may have an aging index range that matches them, for example, an aging index that is good in the interval 0-25, an aging index that is slightly degraded in the interval 25-50, an aging index that is moderately degraded in the interval 50-74, and an aging index that is severely degraded in the interval 75-100, further, the relationship between each aging state and its defect score may be that the defect score corresponding thereto is 0 when the aging state is good, 1 when the aging state is slightly degraded, 2 when the aging state is moderately degraded, and 3 when the aging state is severely degraded.
Furthermore, for each defect, there may be a defect type weight and a defect position weight matched with the defect, and the specific weight allocation mode may be preset empirically, or may be obtained by experimental or mathematical calculation.
S130, calculating to obtain the defect total score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator.
Alternatively, the defect score, defect type weight, and defect location weight for each defect may be represented by a matrix, e.g., a defect scoring momentThe array can be expressed asWherein r is u Scoring umbrella skirt defect, r e Scoring the core rod defects, wherein m and n are respectively the mth umbrella skirt defect and the nth core rod defect; the defect type weight matrix may be expressed as +.>Wherein ω is u Weight omega for umbrella skirt defect type e The weight of the core rod defect type is that m and n are respectively the mth umbrella skirt defect and the nth core rod defect; the defect location weight matrix may be expressed asWherein k is u Is the position weight, k of the umbrella skirt defect e And (3) weighing positions of the core rod defects, wherein m and n are respectively the mth umbrella skirt defect and the nth core rod defect.
Further, the defect total score X of the target insulator can be calculated by the following formula:
it will be appreciated that the defect summary score may be obtained by summing the defect scores, defect type weights, and defect location weights of the umbrella skirt defects and mandrel defects, respectively, and finally calculating the sum. However, the calculation method in this embodiment is merely used as an example, and the calculation method of the defect score, the defect type weight, the defect position weight and the defect total score of the target insulator for each core rod defect and each umbrella skirt defect is not limited, and in the practical application process, a relatively reliable result may be calculated by other reasonable methods.
And S140, performing defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator.
It can be understood that, because the working environments of the insulators are different, the external conditions such as pH value, temperature, humidity and the like which possibly affect the mechanical strength of the insulators are also different, different insulator failure thresholds can be set for the insulators in different operation environments, the insulator failure threshold of the environment with larger influence on the mechanical strength of the insulators can be relatively reduced, and the insulator failure threshold of the environment with smaller influence on the mechanical strength of the insulators can be relatively improved.
Further, the defect early warning content of the target insulator can be determined by judging whether the defect total score of the target insulator is larger than the failure threshold of the insulator matched with the insulator, for example, for the insulator with the defect total score larger than the failure threshold of the insulator, the failure early warning can be generated and sent to the user side, and for the insulator with the defect total score smaller than the failure threshold of the insulator, the aging degree early warning can be generated and sent to the user side.
According to the technical scheme, the core rod defects and the umbrella skirt defects of the target insulator are obtained according to the description information of the core rod defects and the umbrella skirt defects of the target insulator, the defect scores, the defect type weights and the defect position weights of the core rod defects and the umbrella skirt defects of the target insulator are obtained, and the defect total score of the target insulator is obtained through calculation according to the score values and the weight values of the defects, so that the defects on the core rod and the umbrella skirt of the insulator can be accurately positioned in a corresponding defect early warning mode according to the defect total score and the environmental information of the insulator, various types of defects can be detected in real time, the defect detection efficiency of the insulator is improved, meanwhile, defect early warning can be sent to technicians in time, so that the aged insulator can be checked or maintained in time, and the use safety of the insulator and the electricity safety of a power transmission line are guaranteed.
Examples
Fig. 2 is a flowchart of another method for early warning defects of an insulator according to a second embodiment of the present invention, and the method for early warning defects of an insulator is further described based on the above embodiment. As shown in fig. 2, the method includes:
s210, acquiring description information of at least one core rod defect matched with electric field data of a target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator.
The obtaining the description information of the at least one core rod defect matched with the electric field data of the target insulator may specifically include:
generating an electric field distribution curve of the target insulator according to the electric field data of the target insulator;
comparing the electric field distribution curve with a standard electric field curve, and determining the core rod defect position of each core rod defect according to a comparison result;
extracting defect curve sections at the defect positions of each core rod, and comparing each defect curve section with a plurality of pre-established core rod defect databases;
and determining the core rod defect type of each core rod defect according to the comparison result.
The acquiring the description information of at least one umbrella skirt defect matched with the ultrasonic guided wave data of the target insulator may specifically include:
Filtering the ultrasonic guided wave data to screen out umbrella skirt data of the target insulator;
extracting a front edge signal and a rear edge signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain the umbrella skirt defect size of each umbrella skirt defect according to the front edge signal and the rear edge signal of each umbrella skirt defect;
extracting a first ultrasonic echo signal and a first defect echo signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain an umbrella skirt defect center position of each umbrella skirt defect according to the first ultrasonic echo signal and the first defect echo signal of each umbrella skirt defect;
determining the position of the umbrella skirt defect of each umbrella skirt defect according to the size of the umbrella skirt defect of each umbrella skirt defect and the center position of the umbrella skirt defect;
comparing the first defect echo signal of each umbrella skirt defect with a plurality of pre-established umbrella skirt defect databases, and determining the umbrella skirt defect type of each umbrella skirt defect according to the comparison result.
S220, according to the description information of the core rod defects of the target insulator, the description information of the umbrella skirt defects and a preset ageing index calculation rule, calculating to obtain ageing indexes of the core rod defects of the target insulator and the positions of the umbrella skirt defects.
S230, determining the current aging states of the core rod defects of the target insulator and the positions of the umbrella skirt defects according to the aging indexes of the core rod defects of the target insulator and the positions of the umbrella skirt defects, and determining the current defect scores of the core rod defects of the target insulator and the umbrella skirt defects according to the defect scoring values matched with the current aging states.
S240, obtaining the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the core rod defect information, the umbrella skirt defect information, the pre-established defect type database and the pre-established defect position database of the target insulator.
S250, calculating to obtain the defect total score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator.
S260, acquiring the current running environment of the target insulator and an insulator failure threshold matched with the current running environment.
S270, judging whether the total defect score of the target insulator exceeds the insulator failure threshold value; if yes, executing S280; if not, S290 is performed.
S280, generating failure early warning to prompt a technician to replace the target insulator.
Optionally, the failure early warning can include position information of the target insulator, so that a technician can accurately position the aged insulator and replace the aged insulator in time.
And S290, generating an aging degree early warning so as to show the current state of the target insulator to technicians.
Optionally, the early warning of the aging degree may include information of each defect state of the target insulator and current environmental information of the target insulator, so as to facilitate a technician to judge the service life of the target insulator.
According to the technical scheme, through the mode of generating different types of early warning information according to the current running environment of the target insulator and the failure threshold matched with the current running environment and sending the early warning information to the technicians, the insulators in different environments can be accurately early warned, the condition that early warning is not timely due to external environment factors is avoided, the use safety of the insulators can be further ensured, the technicians can be ensured to accurately position the aged insulators, the service lives of the insulators are estimated, and the number of the insulators is counted.
Examples
Fig. 3 is a schematic structural diagram of a defect early warning device for an insulator according to a third embodiment of the present invention. As shown in fig. 3, the apparatus includes: the defect-description-information-acquisition module 310, the defect-score-calculation module 320, the defect-total-score-calculation module 330, and the defect-early-warning module 340.
The defect description information obtaining module 310 is configured to obtain description information of at least one mandrel defect that matches electric field data of the target insulator, and obtain description information of at least one umbrella skirt defect that matches ultrasonic guided wave data of the target insulator.
The defect score calculating module 320 is configured to obtain a defect score, a defect type weight, and a defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the description information of the core rod defect and the umbrella skirt defect of the target insulator.
The defect total score calculating module 330 is configured to calculate a defect total score of the target insulator according to the defect score, the defect type weight, and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator.
And the defect early warning module 340 is configured to perform defect early warning on the target insulator according to the total defect score of the target insulator and the current running environment of the target insulator.
According to the technical scheme, the core rod defects and the umbrella skirt defects of the target insulator are obtained according to the description information of the core rod defects and the umbrella skirt defects of the target insulator, the defect scores, the defect type weights and the defect position weights of the core rod defects and the umbrella skirt defects of the target insulator are obtained, and the defect total score of the target insulator is obtained through calculation according to the score values and the weight values of the defects, so that the defects on the core rod and the umbrella skirt of the insulator can be accurately positioned in a corresponding defect early warning mode according to the defect total score and the environmental information of the insulator, various types of defects can be detected in real time, the defect detection efficiency of the insulator is improved, meanwhile, defect early warning can be sent to technicians in time, so that the aged insulator can be checked or maintained in time, and the use safety of the insulator and the electricity safety of a power transmission line are guaranteed.
On the basis of the above embodiments, the defect-description-information-obtaining module 310 may be specifically configured to:
generating an electric field distribution curve of the target insulator according to the electric field data of the target insulator;
comparing the electric field distribution curve with a standard electric field curve, and determining the core rod defect position of each core rod defect according to a comparison result;
extracting defect curve sections at the defect positions of each core rod, and comparing each defect curve section with a plurality of pre-established core rod defect databases;
and determining the core rod defect type of each core rod defect according to the comparison result.
On the basis of the above embodiments, the defect-description-information-obtaining module 310 may be specifically configured to:
filtering the ultrasonic guided wave data to screen out umbrella skirt data of the target insulator;
extracting a front edge signal and a rear edge signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain the umbrella skirt defect size of each umbrella skirt defect according to the front edge signal and the rear edge signal of each umbrella skirt defect;
extracting a first ultrasonic echo signal and a first defect echo signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain an umbrella skirt defect center position of each umbrella skirt defect according to the first ultrasonic echo signal and the first defect echo signal of each umbrella skirt defect;
Determining the position of the umbrella skirt defect of each umbrella skirt defect according to the size of the umbrella skirt defect of each umbrella skirt defect and the center position of the umbrella skirt defect;
comparing the first defect echo signal of each umbrella skirt defect with a plurality of pre-established umbrella skirt defect databases, and determining the umbrella skirt defect type of each umbrella skirt defect according to the comparison result.
Based on the above embodiments, the defect score calculation module 320 may be specifically configured to:
according to the description information of the core rod defects of the target insulator, the description information of the umbrella skirt defects and a preset ageing index calculation rule, calculating to obtain ageing indexes of the core rod defects of the target insulator and the positions of the umbrella skirt defects;
determining the current aging state of each core rod defect and each umbrella skirt defect of the target insulator according to the aging indexes of each core rod defect and each umbrella skirt defect of the target insulator, and determining the current defect scores of each core rod defect and each umbrella skirt defect of the target insulator according to the defect score values matched with each current aging state;
and obtaining the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the core rod defect information, the umbrella skirt defect information, the pre-established defect type database and the pre-established defect position database of the target insulator.
Based on the above embodiments, the defect early-warning module 340 may be specifically configured to:
acquiring a current running environment of a target insulator and an insulator failure threshold matched with the current running environment;
judging whether the total defect score of the target insulator exceeds the insulator failure threshold value;
if the total defect score of the target insulator exceeds the insulator failure threshold, generating failure early warning so as to prompt a technician to replace the target insulator;
if the total defect score of the target insulator does not exceed the insulator failure threshold, generating an aging degree early warning to show the current state of the target insulator to a technician.
The defect early warning device for the insulator provided by the embodiment of the invention can execute the defect early warning method for the insulator provided by any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.
Examples
Fig. 4 is a schematic structural diagram of an insulator defect early warning system according to a fourth embodiment of the present invention. As shown in fig. 4, the insulator defect early warning system includes an ultrasonic transmitting terminal 410, an electric field distribution measuring terminal 420, an ultrasonic guided wave detecting terminal 430, and a data analyzing terminal 440.
Wherein, the ultrasonic transmitting end 410 is used for providing a detection electric field and ultrasonic guided waves.
The electric field distribution measurement terminal 420 is used for collecting electric field data of the insulator and transmitting the electric field data of the insulator to the data analysis terminal 440.
The ultrasonic guided wave detection terminal 430 is configured to collect ultrasonic guided wave data of the insulator, and send the ultrasonic guided wave data of the insulator to the data analysis terminal 440.
The data analysis terminal 440 is configured to execute the defect pre-warning method of the insulator according to any embodiment of the present invention.
Optionally, the ultrasonic transmitting end 410 may include a high-voltage transformer, a guided wave signal generator, an ultrasonic transmitting contact, a high-voltage clamping needle, and other devices, where the high-voltage transformer may be used to raise the voltage to the use voltage and send the high voltage to the high-voltage clamping needle; the high-voltage clamping pin can be used for clamping the high-voltage side of the composite insulator, and the low-voltage side is grounded to provide a detection electric field; the guided wave signal generator may be for the encoded signal; the ultrasonic transmitting contact can be used for transmitting ultrasonic guided waves for ultrasonic detection.
Optionally, the electric field distribution measurement terminal 420 may include an insulation telescopic rod, an electric field measurement terminal body, an MEMS (Micro Electro Mechanical System ) electric field sensor probe, a wireless transmission antenna, and other devices, and an operator may utilize the insulation telescopic rod to drive the electric field measurement terminal body and the MEMS electric field sensor probe to collect the electric field value on the surface of the insulator, and the wireless transmission antenna may be used to transmit the data packet storing the electric field data to the data analysis terminal 440 through the wireless transmission antenna.
Optionally, the ultrasonic guided wave detection terminal 430 may include a function generator, an amplifier, an ultrasonic transducer, a piezoelectric patch probe, an ultrasonic guided wave detection terminal body, a wireless transmission antenna, and other devices, where the function generator may be used to excite corresponding ultrasonic guided waves by using an externally compiled program, the power amplifier may be used to amplify the ultrasonic guided waves excited by the function generator and reach the transducer, the ultrasonic transducer and the pipeline may be bonded with a coupling agent, when the ultrasonic guided waves encounter a defect, an end surface, and other geometric abrupt changes during propagation in the composite insulator, reflection and transmission occur, the ultrasonic transducer may be used to absorb the reflected waveforms, and the wireless transmission antenna may be used to transmit the data packet storing the ultrasonic guided wave data to the data analysis terminal 440 through the wireless transmission antenna.
According to the technical scheme, accurate electric field data and ultrasonic guided wave data can be obtained by configuring the ultrasonic transmitting end, the electric field distribution measuring terminal, the ultrasonic guided wave detecting terminal and the data analysis terminal in the insulator defect early warning system, so that defects on a core rod and an umbrella skirt of an insulator can be accurately positioned, defects of various types can be detected in real time, the defect detection efficiency of the insulator is improved, meanwhile, defect early warning can be timely sent to technicians, so that the technicians can timely check or maintain aged insulators, and the use safety of the insulators and the electricity use safety of a power transmission line are guaranteed.
Example five
Fig. 5 shows a schematic diagram of the structure of an electronic device 10 that may be used to implement an embodiment of the invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. Electronic equipment may also represent various forms of mobile devices, such as personal digital processing, cellular telephones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.
As shown in fig. 5, the electronic device 10 includes at least one processor 11, and a memory, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, etc., communicatively connected to the at least one processor 11, in which the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 may also be stored. The processor 11, the ROM 12 and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.
Various components in the electronic device 10 are connected to the I/O interface 15, including: an input unit 16 such as a keyboard, a mouse, etc.; an output unit 17 such as various types of displays, speakers, and the like; a storage unit 18 such as a magnetic disk, an optical disk, or the like; and a communication unit 19 such as a network card, modem, wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information/data with other devices via a computer network, such as the internet, and/or various telecommunication networks.
The processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, digital Signal Processors (DSPs), and any suitable processor, controller, microcontroller, etc. The processor 11 performs the respective methods and processes described above, such as a defect warning method of an insulator as described in the embodiment of the present invention. Namely:
acquiring description information of at least one core rod defect matched with electric field data of a target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator;
Obtaining the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the description information of the core rod defect and the umbrella skirt defect of the target insulator;
calculating to obtain the total defect score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator;
and performing defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator.
In some embodiments, the defect warning method of the insulator may be implemented as a computer program tangibly embodied on a computer-readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program may be loaded and/or installed onto the electronic device 10 via the ROM 12 and/or the communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the insulator defect warning method described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to perform the defect warning method of the insulator in any other suitable way (e.g. by means of firmware).
Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuit systems, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), systems On Chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs, the one or more computer programs may be executed and/or interpreted on a programmable system including at least one programmable processor, which may be a special purpose or general-purpose programmable processor, that may receive data and instructions from, and transmit data and instructions to, a storage system, at least one input device, and at least one output device.
A computer program for carrying out methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be implemented. The computer program may execute entirely on the machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to a user; and a keyboard and a pointing device (e.g., a mouse or a trackball) through which a user can provide input to the electronic device. Other kinds of devices may also be used to provide for interaction with a user; for example, feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form, including acoustic input, speech input, or tactile input.
The systems and techniques described here can be implemented in a computing system that includes a background component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such background, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.
The computing system may include clients and servers. The client and server are typically remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical hosts and VPS service are overcome.
It should be appreciated that various forms of the flows shown above may be used to reorder, add, or delete steps. For example, the steps described in the present invention may be performed in parallel, sequentially, or in a different order, so long as the desired results of the technical solution of the present invention are achieved, and the present invention is not limited herein.
The above embodiments do not limit the scope of the present invention. It will be apparent to those skilled in the art that various modifications, combinations, sub-combinations and alternatives are possible, depending on design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (8)
1. The defect early warning method for the insulator is characterized by comprising the following steps of:
acquiring description information of at least one core rod defect matched with electric field data of a target insulator, and acquiring description information of at least one umbrella skirt defect matched with ultrasonic guided wave data of the target insulator;
obtaining the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the description information of the core rod defect and the umbrella skirt defect of the target insulator;
Calculating to obtain the total defect score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator;
performing defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator;
the method for acquiring the descriptive information of at least one umbrella skirt defect matched with the ultrasonic guided wave data of the target insulator comprises the following steps:
filtering the ultrasonic guided wave data to screen out umbrella skirt data of the target insulator;
extracting a front edge signal and a rear edge signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain the umbrella skirt defect size of each umbrella skirt defect according to the front edge signal and the rear edge signal of each umbrella skirt defect;
extracting a first ultrasonic echo signal and a first defect echo signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain an umbrella skirt defect center position of each umbrella skirt defect according to the first ultrasonic echo signal and the first defect echo signal of each umbrella skirt defect;
determining the position of the umbrella skirt defect of each umbrella skirt defect according to the size of the umbrella skirt defect of each umbrella skirt defect and the center position of the umbrella skirt defect;
Comparing the first defect echo signal of each umbrella skirt defect with a plurality of pre-established umbrella skirt defect databases, and determining the umbrella skirt defect type of each umbrella skirt defect according to the comparison result;
wherein, the defect total score X of the target insulator is calculated by the following formula:
；
wherein m is the m-th umbrella skirt defect, n is the n-th core rod defect, omega u Weight omega for umbrella skirt defect type e Weighting the core rod defect type, r u Scoring umbrella skirt defect, r e Scoring core rod defects, k u Is the position weight, k of the umbrella skirt defect e Weighting the defect positions of the core rod;
the method for carrying out defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator comprises the following steps:
acquiring a current running environment of a target insulator and an insulator failure threshold matched with the current running environment;
judging whether the total defect score of the target insulator exceeds the insulator failure threshold value;
if the total defect score of the target insulator exceeds the insulator failure threshold, generating failure early warning so as to prompt a technician to replace the target insulator;
if the total defect score of the target insulator does not exceed the insulator failure threshold, generating an aging degree early warning to show the current state of the target insulator to a technician;
The defect early warning comprises failure early warning and aging degree early warning; the failure early warning at least comprises the position information of the target insulator; the early warning of the aging degree at least comprises all defect state information of the target insulator and current environment information of the target insulator.
2. The method of claim 1, wherein obtaining descriptive information of at least one core rod defect matching the electric field data of the target insulator comprises:
generating an electric field distribution curve of the target insulator according to the electric field data of the target insulator;
comparing the electric field distribution curve with a standard electric field curve, and determining the core rod defect position of each core rod defect according to a comparison result;
extracting defect curve sections at the defect positions of each core rod, and comparing each defect curve section with a plurality of pre-established core rod defect databases;
and determining the core rod defect type of each core rod defect according to the comparison result.
3. The method of claim 1, wherein obtaining a defect score, a defect type weight, and a defect location weight for each core rod defect and each umbrella skirt defect of the target insulator based on description information of the core rod defect and the umbrella skirt defect of the target insulator, comprises:
According to the description information of the core rod defects of the target insulator, the description information of the umbrella skirt defects and a preset ageing index calculation rule, calculating to obtain ageing indexes of the core rod defects of the target insulator and the positions of the umbrella skirt defects;
determining the current aging state of each core rod defect and each umbrella skirt defect of the target insulator according to the aging indexes of each core rod defect and each umbrella skirt defect of the target insulator, and determining the current defect scores of each core rod defect and each umbrella skirt defect of the target insulator according to the defect score values matched with each current aging state;
and obtaining the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator according to the core rod defect information, the umbrella skirt defect information, the pre-established defect type database and the pre-established defect position database of the target insulator.
4. The utility model provides a defect early warning device of insulator which characterized in that includes:
the defect description information acquisition module is used for acquiring description information of at least one core rod defect matched with the electric field data of the target insulator and acquiring description information of at least one umbrella skirt defect matched with the ultrasonic guided wave data of the target insulator;
The defect scoring calculation module is used for acquiring the defect scores, the defect type weights and the defect position weights of all the core rod defects and all the umbrella skirt defects of the target insulator according to the description information of the core rod defects and the umbrella skirt defects of the target insulator;
the defect total score calculation module is used for calculating the defect total score of the target insulator according to the defect score, the defect type weight and the defect position weight of each core rod defect and each umbrella skirt defect of the target insulator;
the defect early warning module is used for carrying out defect early warning on the target insulator according to the defect total score of the target insulator and the current running environment of the target insulator;
the defect description information acquisition module is specifically configured to:
filtering the ultrasonic guided wave data to screen out umbrella skirt data of the target insulator;
extracting a front edge signal and a rear edge signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain the umbrella skirt defect size of each umbrella skirt defect according to the front edge signal and the rear edge signal of each umbrella skirt defect;
extracting a first ultrasonic echo signal and a first defect echo signal of each umbrella skirt defect in the umbrella skirt data, and calculating to obtain an umbrella skirt defect center position of each umbrella skirt defect according to the first ultrasonic echo signal and the first defect echo signal of each umbrella skirt defect;
Determining the position of the umbrella skirt defect of each umbrella skirt defect according to the size of the umbrella skirt defect of each umbrella skirt defect and the center position of the umbrella skirt defect;
comparing the first defect echo signal of each umbrella skirt defect with a plurality of pre-established umbrella skirt defect databases, and determining the umbrella skirt defect type of each umbrella skirt defect according to the comparison result;
wherein, the defect total score X of the target insulator is calculated by the following formula:
；
wherein m is the m-th umbrella skirt defect, n is the n-th core rod defect, omega u Weight omega for umbrella skirt defect type e Weighting the core rod defect type, r u Scoring umbrella skirt defect, r e Scoring core rod defects, k u Is the position weight, k of the umbrella skirt defect e Weighting the defect positions of the core rod;
the defect early warning module is specifically used for:
acquiring a current running environment of a target insulator and an insulator failure threshold matched with the current running environment;
judging whether the total defect score of the target insulator exceeds the insulator failure threshold value;
if the total defect score of the target insulator exceeds the insulator failure threshold, generating failure early warning so as to prompt a technician to replace the target insulator;
if the total defect score of the target insulator does not exceed the insulator failure threshold, generating an aging degree early warning to show the current state of the target insulator to a technician;
The defect early warning comprises failure early warning and aging degree early warning; the failure early warning at least comprises the position information of the target insulator; the early warning of the aging degree at least comprises all defect state information of the target insulator and current environment information of the target insulator.
5. The insulator defect early warning system is characterized by comprising an ultrasonic transmitting end, an electric field distribution measuring terminal, an ultrasonic guided wave detecting terminal and a data analyzing terminal;
the ultrasonic transmitting end is used for providing a detection electric field and ultrasonic guided waves;
the electric field distribution measurement terminal is used for collecting electric field data of the insulator and sending the electric field data of the insulator to the data analysis terminal;
the ultrasonic guided wave detection terminal is used for collecting ultrasonic guided wave data of the insulator and sending the ultrasonic guided wave data of the insulator to the data analysis terminal;
the data analysis terminal is used for executing the defect early warning method of the insulator according to any one of claims 1-3.
6. The system of claim 5, wherein the ultrasound transmitting end comprises a high voltage transformer, a guided wave signal generator, an ultrasound transmitting contact, and a high voltage pin.
7. An electronic device, the electronic device comprising:
At least one processor; and
a memory communicatively coupled to the at least one processor; wherein, the liquid crystal display device comprises a liquid crystal display device,
the memory stores a computer program executable by the at least one processor to enable the at least one processor to perform the defect warning method of the insulator of any one of claims 1-3.
8. A computer readable storage medium storing computer instructions for causing a processor to perform the method of defect warning for an insulator according to any one of claims 1-3.
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