CN115656258B - FBG temperature sensor array-based sleeve wetting diagnosis method and device - Google Patents
FBG temperature sensor array-based sleeve wetting diagnosis method and device Download PDFInfo
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- CN115656258B CN115656258B CN202211687686.7A CN202211687686A CN115656258B CN 115656258 B CN115656258 B CN 115656258B CN 202211687686 A CN202211687686 A CN 202211687686A CN 115656258 B CN115656258 B CN 115656258B
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Abstract
The application relates to a method and a device for diagnosing sleeve pipe moisture based on an FBG temperature sensor array. The method comprises the following steps: the method comprises the steps of acquiring temperature data of different height positions of the surface of a sleeve to be diagnosed collected by a temperature sensor array, determining a suspected damped sleeve in the sleeve to be diagnosed according to the temperature data corresponding to each temperature sensor in the temperature sensor array, correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data, judging the suspected damped sleeve to be the damped sleeve according to the corrected temperature data, and determining a target damped position in the damped sleeve according to the temperature data corresponding to the damped sleeve. By adopting the method, the sleeve to be diagnosed can be monitored in real time through the temperature sensor array, the suspected damped sleeve is further determined, the damped sleeve and the damped position are determined according to the temperature data of the suspected damped sleeve, the damped position of the sleeve can be accurately positioned, and the accuracy of the sleeve damping diagnosis is improved.
Description
Technical Field
The present application relates to the field of online monitoring of electrical equipment, and in particular, to a method, a system, an apparatus, a computer device, a storage medium, and a computer program product for diagnosing wetting of a bushing based on an FBG temperature sensor array.
Background
The oil-immersed paper sleeve has the characteristics of long and thin structure, a plurality of paper layers, a plurality of aluminum foils and the like, the insulating field intensity distribution of the sleeve is not uniform due to the long and thin plug-in electrode structure, a series of aluminum foils are arranged in a multi-layer wound sleeve core, the uniformity degree of the radial electric field distribution is improved, the edge electric field effect of the aluminum foils is increased, the protruding barrier property of the aluminum foils enables the insulating and wetting process of the sleeve to be more specific, the oil-immersed paper sleeve is commonly used in a power transformer, but the oil-immersed paper sleeve is also a fragile part in a key component of the power transformer, the insulating and wetting is a main insulating defect type of the oil-immersed paper sleeve, the safety operation of a power system is greatly threatened, and the diagnosis of the inner wetting of the sleeve is realized by monitoring the surface temperature of the sleeve at present often.
However, in the traditional method, the point type sensing probe comprises a metal part, so that the potential safety hazard of insulation exists, the temperature of the lower part of the sleeve can be monitored only, and the point type sensing probe cannot be arranged on the surfaces of an insulating umbrella and a general cap; the measuring result measured by the infrared thermal imager is easily interfered by measuring distance, ambient temperature, shielding and the like, and the accuracy of sleeve damp diagnosis is not improved.
Disclosure of Invention
In view of the above, there is a need to provide a method, a system, an apparatus, a computer device, a computer readable storage medium and a computer program product for diagnosing wetting of a casing based on an FBG temperature sensor array, which can improve the accuracy of diagnosing wetting of the casing.
In a first aspect, the present application provides a method for diagnosing that a casing pipe is affected with moisture based on an array of FBG temperature sensors, the method comprising:
acquiring temperature data of different height positions of the surface of a sleeve to be diagnosed, which are acquired by a temperature sensor array;
according to the temperature data corresponding to each temperature sensor in the temperature sensor array, determining a suspected damped sleeve in the sleeve to be diagnosed;
correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data;
according to the corrected temperature data, the suspected damped sleeve is judged to be a damped sleeve;
and determining a target damping position in the damping sleeve according to the temperature data corresponding to the damping sleeve.
In one embodiment, the bushing to be diagnosed includes at least one diagnosis reference surface, where the diagnosis reference surface is a plane perpendicular to a central axis of the bushing to be diagnosed and having the temperature sensors, included angles formed by any two adjacent temperature sensors in the diagnosis reference surface and the central axis of the bushing to be diagnosed are all equal, and the bushing to be diagnosed is determined to be suspected to be wetted according to temperature data corresponding to each temperature sensor in the temperature sensor array, including:
acquiring average temperature data corresponding to each diagnosis reference surface according to the temperature data corresponding to each temperature sensor; the average temperature data is used for representing the average value of the temperature values correspondingly measured by the temperature sensors in the corresponding diagnosis reference plane;
determining abnormal reference surfaces in the diagnosis reference surfaces according to the average temperature data corresponding to the diagnosis reference surfaces;
and determining the sleeve to be diagnosed corresponding to the abnormal reference surface as the suspected damped sleeve.
In one embodiment, the correcting the temperature data corresponding to the suspected damped bushing to obtain corrected temperature data includes:
acquiring the environmental temperature of the environment where the suspected damped sleeve is located;
and correcting the temperature data corresponding to the suspected damped sleeve according to the environment temperature to obtain the corrected temperature data.
In one embodiment, the determining that the suspected sleeve affected with moisture is a sleeve affected with moisture according to the corrected temperature data includes:
acquiring suspected damped sleeve current data corresponding to the suspected damped sleeve;
acquiring reference temperature data corresponding to a reference casing in a normal working state; the reference current data corresponding to the reference casing is equal to the suspected damped casing current data;
and under the condition that the difference value between the corrected temperature data and the reference temperature data is larger than a preset difference value threshold value, judging that the suspected damped sleeve is the damped sleeve.
In one embodiment, the determining a target damped position in the damped sleeve according to the temperature data corresponding to the damped sleeve includes:
respectively performing linear fitting on temperature data corresponding to temperature sensors on the same column in the temperature sensor array to obtain linear fitting results;
determining a tidal surface in the tidal casing according to the linear fitting result;
determining target measuring points in the candidate measuring points corresponding to the temperature sensors in the affected surface;
and determining the damp position of the target in the damp casing according to the position information of the target measuring point.
In one embodiment, the determining the affected surface in the affected casing according to the linear fitting result includes:
determining deviation between temperature data corresponding to any one temperature sensor and temperature data corresponding to other temperature sensors; the other temperature sensors are temperature sensors in the same column except any one temperature sensor;
determining a target temperature sensor in each temperature sensor according to the corresponding deviation of each temperature sensor; the deviation corresponding to the target temperature sensor is maximum;
determining the plane where the target temperature sensor is located as a damped surface in the damped sleeve; the moisture-affected surface is perpendicular to the central axis of the sleeve to be diagnosed.
In a second aspect, the present application further provides a casing wetting diagnosis system based on an FBG temperature sensor array, the system comprising the temperature sensor array and a controller;
each temperature sensor in the temperature sensor array is arranged at different height positions on the surface of the casing to be diagnosed; the temperature sensor is an optical fiber temperature sensor; a graphene tube is sleeved in an optical fiber grid region in the optical fiber temperature sensor; epoxy resin is coated on the joint between the graphene tube and the optical fiber grating region;
the controller is configured to execute the steps of implementing the method according to any one of the above aspects.
In a third aspect, the present application further provides a device for diagnosing wetting of a bushing based on an array of FBG temperature sensors, the device comprising:
the acquisition module is used for acquiring temperature data of different height positions of the surface of the sleeve to be diagnosed, which are acquired by the temperature sensor array;
the identification module is used for determining suspected damped sleeves in the sleeves to be diagnosed according to temperature data corresponding to each temperature sensor in the temperature sensor array;
the correction module is used for correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data;
the judging module is used for judging the suspected damped sleeve to be the damped sleeve according to the corrected temperature data;
and the determining module is used for determining the target damping position in the damping sleeve according to the temperature data corresponding to the damping sleeve.
In a fourth aspect, the application also provides a computer device. The computer device comprises a memory and a processor, the memory storing a computer program which, when executed by the processor, carries out the steps of the method as described above.
In a fifth aspect, the present application further provides a computer-readable storage medium. The computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
In a sixth aspect, the present application further provides a computer program product. The computer program product comprises a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the bushing wetting diagnosis method, the system, the device, the computer equipment, the storage medium and the computer program product based on the FBG temperature sensor array, the temperature data of the positions of different heights of the surface of a bushing to be diagnosed are acquired by the temperature sensor array, so that the temperature data and the temperature change condition of each area of the bushing to be diagnosed are monitored simultaneously, a suspected wetted bushing in the bushing to be diagnosed is determined according to the temperature data corresponding to each temperature sensor in the temperature sensor array, so that a wetted bushing which is possibly existing is determined, the temperature data corresponding to the suspected wetted bushing is corrected, corrected temperature data are obtained, so that the influence of environmental factors on the temperature data is eliminated, the wetted bushing is determined to be a wetted bushing according to the corrected temperature data, so that the wetted bushing is accurately judged, the target wetted position in the wetted bushing is determined according to the temperature data corresponding to the wetted bushing, the wetted position of the wetted bushing is determined, real-time temperature monitoring is performed through the temperature sensor array, the suspected wetted bushing is determined according to the monitored temperature data, the temperature data of the wetted bushing are corrected, the target wetted position of the suspected bushing is determined, the wetted bushing is determined, the data are further, the wetted position of the sleeve is determined, and the accuracy of the sleeve is improved.
Drawings
FIG. 1 is a diagram illustrating an application environment of a method for diagnosing whether a casing pipe is affected with moisture based on an FBG temperature sensor array according to an embodiment;
FIG. 2 is a schematic flow chart illustrating a method for diagnosing wetting of a casing based on an FBG temperature sensor array according to an embodiment;
FIG. 3 is a schematic diagram of a temperature sensor arrangement in one embodiment;
FIG. 4 is a schematic flow chart of a method for diagnosing wetting of a casing based on an FBG temperature sensor array according to another embodiment;
FIG. 5 is a schematic flow chart diagram illustrating a process for determining a position fix result in one embodiment;
FIG. 6 is a block diagram of a structure of a graphene tube in an embodiment;
FIG. 7 is a block diagram of a damp diagnosis device for a ferrule based on FBG temperature sensor array according to an embodiment;
FIG. 8 is a diagram of an internal structure of a computer device in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
The method for diagnosing the sleeve pipe affected with damp based on the FBG temperature sensor array provided by the embodiment of the application can be applied to the application environment shown in FIG. 1. Wherein the terminal 102 communicates with the server 104 via a network. The data storage system may store data that the server 104 needs to process. The data storage system may be integrated on the server 104 or may be placed on the cloud or other network server. The method comprises the steps that a terminal 102 acquires temperature data of different height positions of the surface of a sleeve to be diagnosed, the terminal 102 determines a suspected damped sleeve in the sleeve to be diagnosed according to the temperature data corresponding to each temperature sensor in the temperature sensor array, the terminal 102 corrects the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data, the terminal 102 judges the suspected damped sleeve to be a damped sleeve according to the corrected temperature data, and the terminal 102 determines a target damped position in the damped sleeve according to the temperature data corresponding to the damped sleeve. The terminal 102 may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, internet of things devices, and portable wearable devices. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, and the like. The server 104 may be implemented as a stand-alone server or as a server cluster comprised of multiple servers.
It is understood that the method can also be applied to a server, and can also be applied to a system comprising a terminal and a server, and is realized through the interaction of the terminal and the server.
In some embodiments, as shown in fig. 2, a method for diagnosing a casing wet based on an array of FBG temperature sensors is provided, which is illustrated by way of example in fig. 1, and includes the following steps:
step S202, acquiring temperature data of different height positions of the surface of the sleeve to be diagnosed, which are acquired by the temperature sensor array.
Wherein, the temperature sensor array can refer to the array that comprises a plurality of temperature sensor, and in practical application, the temperature sensor array can evenly be arranged at the sleeve pipe surface of waiting to diagnose, and the temperature sensor can include FBG temperature sensor.
The bushing to be diagnosed can be a bushing which needs to be diagnosed by being affected with damp, and in practical application, the bushing to be diagnosed can comprise a bushing corresponding to the three phases of the transformer A, B, C.
The temperature data may refer to data collected by the temperature sensor and used for characterizing the temperature of the casing.
As an example, the FBG multipoint temperature sensing module arranges the optical fiber FBG temperature sensors on the surfaces of the sleeve lifting seat, the insulating umbrella and the military cap, collects the temperature information of hundreds of measuring points on each part of the whole sleeve in real time, and the terminal receives the temperature data sent by the FBG multipoint temperature sensing module.
And S204, determining suspected damped sleeves in the sleeves to be diagnosed according to the temperature data corresponding to each temperature sensor in the temperature sensor array.
The suspected sleeve pipe that is affected with damp can be a sleeve pipe that is preliminarily judged to possibly be affected with damp according to the temperature data.
As an example, the terminal acquires temperature data of the three-phase bushing, calculates an average value corresponding to the temperature data of the three-phase bushing, and preliminarily determines that the bushing possibly affected with damp is the bushing with the highest average value according to the average value corresponding to the temperature data of the three-phase bushing.
And step S206, correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data.
The correction processing may be a process of correcting temperature data acquired by a temperature sensor by using data such as an ambient temperature.
The corrected temperature data may be data obtained by correcting temperature data acquired by the temperature sensor using data such as ambient temperature.
As an example, the terminal obtains an environmental temperature of an environment where the suspected damped sleeve is located, and corrects the temperature data corresponding to the suspected damped sleeve by using the environmental temperature to obtain corrected temperature data.
And S208, judging that the suspected damped sleeve is a damped sleeve according to the corrected temperature data.
The damped bushing can be a bushing which is determined to be damped according to the corrected temperature data.
And step S210, determining a target damping position in the damping sleeve according to the temperature data corresponding to the damping sleeve.
The target damped position can be a position corresponding to a damped region in each region of the damped sleeve.
As an example, the terminal determines whether the suspected sleeve pipe is a damped sleeve pipe according to the corrected temperature data and the corresponding reference temperature data, determines a damped area of the damped sleeve pipe according to the temperature data of the damped sleeve pipe, and further determines a target damped position according to the damped area.
According to the bushing damp diagnosis method based on the FBG temperature sensor array, the temperature sensor array is obtained to collect temperature data of different height positions of the surface of a bushing to be diagnosed, so that temperature data and temperature change conditions of all areas of the bushing to be diagnosed are monitored simultaneously, a suspected damp bushing in the bushing to be diagnosed is determined according to the temperature data corresponding to all temperature sensors in the temperature sensor array, so that a possibly damp bushing is determined, the temperature data corresponding to the suspected damp bushing is corrected, corrected temperature data is obtained, so that the influence of environmental factors on the temperature data is eliminated, the suspected damp bushing is determined to be a damp bushing according to the corrected temperature data, so that the damp bushing is accurately determined, a target damp position in the damp bushing is determined according to the temperature data corresponding to the damp bushing, so that the damp position of the damp bushing to be damped is determined, real-time temperature monitoring is performed on the bushing to be diagnosed through the temperature sensor array, the suspected damp bushing to be damped is determined according to the temperature data, the damp bushing to correct the temperature data of the suspected damp bushing, the damp bushing is determined, the damp bushing is accurately positioned according to the temperature data corresponding to the damp bushing, and the damp bushing is capable of accurately positioned.
In some embodiments, the casing to be diagnosed comprises at least one diagnosis reference surface, the diagnosis reference surface is a plane perpendicular to the central axis of the casing to be diagnosed, the temperature sensors exist in the plane, and included angles formed by any two adjacent temperature sensors in the diagnosis reference surface and the central axis of the casing to be diagnosed are equal; the determining a suspected damped sleeve in the sleeve to be diagnosed according to the temperature data corresponding to each temperature sensor in the temperature sensor array comprises:
acquiring average temperature data corresponding to each diagnosis reference surface according to the temperature data corresponding to each temperature sensor; the average temperature data is used for representing the average value of the temperature values correspondingly measured by the temperature sensors in the corresponding diagnosis reference plane.
The diagnostic reference surface may be a plane perpendicular to the central axis of the damped bushing, and in practical applications, the temperature sensor may be disposed at a junction point between the diagnostic reference surface and the surface of the bushing.
The average temperature data may be temperature average data obtained by averaging temperature values measured by the temperature sensors in the same diagnostic reference plane.
As an example, the terminal obtains temperature data measured by each temperature sensor in the same diagnosis reference plane, and performs an average solution on the at least two temperature data to obtain average temperature data.
And determining abnormal reference surfaces in the diagnosis reference surfaces according to the average temperature data corresponding to the diagnosis reference surfaces.
The abnormal reference surface may be a diagnostic reference surface in which a difference between the average temperature data and the average temperature data of other diagnostic reference surfaces exceeds a preset difference threshold.
And determining the sleeve to be diagnosed corresponding to the abnormal reference surface as the suspected sleeve affected with damp.
In order to facilitate understanding of those skilled in the art, fig. 3 exemplarily presents a schematic layout diagram of a sleeve FBG temperature sensor array, in a lifting seat, FBG optical fibers are annularly arranged and firmly adhered to a metal surface of the lifting seat through a protection device, and an arrangement interval of two adjacent layers of FBG temperature sensors in a vertical direction at this position is 0.1m, so as to ensure accuracy of fault location; at the lower part of each insulating umbrella, the FBG optical fibers are annularly arranged and firmly adhered to the surface of the insulating umbrella through a protection device; and at the position of the military cap, the FBG optical fibers are annularly arranged and firmly adhered to the surface of the military cap through a protection device, and the arrangement interval of two adjacent layers of FBG temperature sensors 5 in the vertical direction at the position is 0.05m. In the three arrangement positions, the angle formed by the connecting line of the arrangement points of the two adjacent FBG temperature sensors 5 and the central axis of the sleeve in the horizontal direction is 30 degrees. The arrangement intervals of the measuring points can be flexibly adjusted according to the actual size of the casing, but the total number of the measuring points of each casing is not less than 100.
In the embodiment, the suspected damped sleeve in the sleeve to be diagnosed is determined according to the temperature data acquired by the temperature sensor, so that the suspected damped sleeve can be preliminarily determined, the workload of damping diagnosis of the sleeve is reduced, and the efficiency of damping diagnosis of the sleeve is improved.
In some embodiments, the correcting the temperature data corresponding to the suspected damped bushing to obtain corrected temperature data includes:
and acquiring the environmental temperature of the environment where the suspected damped sleeve is located.
The environmental temperature may refer to an environmental temperature of an environment where the suspected sleeve is exposed to moisture.
And correcting the temperature data corresponding to the suspected damped sleeve according to the environment temperature to obtain the corrected temperature data.
As an example, the terminal obtains the environmental temperature of the environment in which the suspected damp casing is locatedK 0 Temperature data corresponding to suspected damped sleeveK φz Correcting to obtain corrected temperature dataK’ φz The relationship between the corrected temperature data and the temperature data corresponding to the suspected damped bushing may be expressed as:
in the embodiment, the temperature data of the suspected damped sleeve is corrected according to the environment temperature, so that the influence of the change of the environment temperature on the damped diagnosis result can be avoided through correction, the actual temperature data is reflected through the corrected temperature data, and the damping diagnosis accuracy is improved.
In some embodiments, the determining that the suspected damped sleeve is a damped sleeve according to the corrected temperature data includes:
and acquiring current data of the suspected damped sleeve corresponding to the suspected damped sleeve.
The suspected damped bushing current data may be current data corresponding to a current passing through the suspected damped bushing.
Acquiring reference temperature data corresponding to a reference casing in a normal working state; and the reference current data corresponding to the reference bushing is equal to the suspected damped bushing current data.
Wherein, the reference cannula may refer to a standard cannula for comparison with a suspected wetted cannula.
The reference temperature data may be temperature data obtained after acquiring the process temperature of the reference casing in a normal working state.
The reference current data may be current data corresponding to a current passing through the reference bushing when the reference bushing is compared with the suspected damped bushing.
And under the condition that the difference value between the corrected temperature data and the reference temperature data is larger than a preset difference value threshold value, judging that the suspected damped sleeve is the damped sleeve.
The difference threshold may be a threshold used to determine whether a difference between the corrected temperature data and the reference temperature data meets a difference requirement.
As an example, as shown in FIG. 4, the measuring point number of the measuring point corresponding to each temperature sensor is initialized by the terminal, and the plane perpendicular to the axial direction of the casing at the bottom of the casing is taken as the planez= 0 reference plane, with any one perpendicular tozLine of the reference plane of = 0φ= 0 reference line, three phase bushing of noteφThe = 0 reference line should be at the same position of the phase sleeve. The position of each measuring point is expressed by polar coordinates (φ ki , z kj ) WhereinkIn order to index the region(s),k= 1 indicates that the measuring point is located at the elevation seat,k= 2 indicates that the measuring point is located at the insulating umbrella,k= 3 indicates that the measuring point is located at the military cap;iin order to be indexed horizontally,jfor vertical indexing, e.g.φ 23 , z 21 ) Is shown at the position of the insulating umbrella fromφAnd a third column in which the 0 reference line starts to rotate clockwise, wherein the terminal compares temperature data of each measuring point of a A, B, C three-phase casing at a measuring point at the position of a first layer in the vertical direction of the area, if the average value of the temperature of one phase of casing is higher than that of the other two phases by 10 ℃ and more, the phase of casing is marked as suspected to be affected with damp, the terminal acquires the ambient temperature by using a thermocouple temperature sensor, simultaneously reads the current of the suspected damped casing, corrects the monitoring result of each sensor of the suspected damped phase to obtain corrected temperature data, compares the corrected temperature data with reference temperature data corresponding to a reference casing through which the suspected damped casing current flows, and if the corrected temperature data is still higher than the reference temperature data by 10 ℃ and more, judges that the casing of the phase is affected with damp.
In the embodiment, the damped sleeve is determined according to the corrected temperature data and the reference temperature data, so that the influence of the change of the load rate of the sleeve on the diagnosis result can be avoided, and the damping diagnosis accuracy rate of the sleeve is further improved.
In some embodiments, the determining a target wetting position in the wetting sleeve according to the temperature data corresponding to the wetting sleeve includes:
and respectively carrying out linear fitting on the temperature data corresponding to the temperature sensors on the same column in the temperature sensor array to obtain linear fitting results.
The linear fitting result may be a result obtained by linearly fitting temperature data corresponding to temperature sensors on the same column in the temperature sensor array.
And determining the affected surface in the affected casing according to the linear fitting result.
The affected surface can be a diagnosis reference surface where the temperature sensor corresponding to the abnormal temperature data is located according to the linear fitting result.
And determining target measuring points in the candidate measuring points corresponding to the temperature sensors in the affected surface.
The candidate measuring point may refer to a measuring point corresponding to each temperature sensor.
The target measuring point can be a measuring point corresponding to a temperature sensor corresponding to the abnormal temperature in the linear fitting result.
And determining the target damping position in the damping sleeve according to the position information of the target measuring point.
The position information may refer to a measurement point number corresponding to the target measurement point.
As an example, as shown in fig. 5, the terminal receives the fault phase information corresponding to the damped bushing, the terminal reads the temperature data corresponding to all the measuring points of the faulty bushing, the terminal compares the temperature values of the longitudinal measuring points and performs linear fitting, and the measuring point of the circle with the largest temperature deviation is selectedzThe coordinates are used as longitudinal position coordinates of the affected area; the terminal compares the temperature results of the measuring points at the longitudinal position and uses the measuring point with the highest temperatureφCoordinates as corners of the affected areaAnd coordinates, and the terminal outputs a positioning result aiming at the affected area, wherein the positioning result represents the affected position of the target.
In the embodiment, the target damped position of the damped position is determined according to the temperature data of the damped sleeve, the damped surface can be determined firstly by utilizing the temperature data, and then the coordinate of the damped position in the damped surface is determined, so that the precision of damp diagnosis is improved.
In some embodiments, the determining a wetted surface in the wetted cannula from the linear fit result includes:
determining deviation between temperature data corresponding to any one temperature sensor and temperature data corresponding to other temperature sensors; the other temperature sensors are temperature sensors in the same column except for any one temperature sensor.
The deviation may be a difference between temperature data corresponding to any one of the temperature sensors and temperature data corresponding to other temperature sensors.
Determining a target temperature sensor in each temperature sensor according to the corresponding deviation of each temperature sensor; and the corresponding deviation of the target temperature sensor is the largest.
The target temperature sensor may be a temperature sensor having the largest deviation.
Determining the plane where the target temperature sensor is located as a moisture surface in the moisture sleeve; the moisture-affected surface is perpendicular to the central axis of the sleeve to be diagnosed.
Wherein, the central axis may refer to the central axis of the damped sleeve.
As an example, the terminal acquires temperature data acquired by all temperature sensors corresponding to the moisture-affected cover, determines the temperature sensor with the maximum temperature data value, and takes the plane where the temperature sensor is located as the moisture-affected plane.
In the embodiment, the fried surface is determined according to the linear fitting result, the temperature sensor corresponding to the temperature data with the maximum deviation can be determined by using the deviation among the temperature data, the moisture position in the moisture surface is further determined, and the moisture diagnosis precision is improved.
In some embodiments, the present application further provides a system for diagnosing wetting of a casing based on an array of FBG temperature sensors, the system comprising an array of temperature sensors and a controller;
each temperature sensor in the temperature sensor array is arranged at different height positions on the surface of the casing to be diagnosed; the temperature sensor is an optical fiber temperature sensor; a graphene tube is sleeved in an optical fiber grid region in the optical fiber temperature sensor; epoxy resin is coated on the joint between the graphene tube and the optical fiber grating region;
as an example, graphite alkene pipe can make the protection device who is used for fixed and protection temperature sensor, and this protection device uses graphite alkene pipe as the main part, and hollow graphite alkene pipe is stretched into completely in FBG temperature sensor's grating district, and protection device's both ends evenly coat epoxy to fixed FBG temperature sensor's optic fibre, protection device firmly pastes in the sleeve pipe surface through heat conduction silica gel, and this protection device can protect temperature sensor not receive the interference of transformer vibration, increase of service life, improvement diagnosis reliability.
The controller is configured to execute the steps of implementing the method according to any one of the above aspects.
In the embodiment, the sleeve damping diagnosis system based on the FBG temperature sensor array can not be subjected to electromagnetic interference, does not influence the normal operation of the sleeve, accurately and efficiently realizes temperature acquisition, monitors the temperature change conditions of hundreds of measuring points at each part of the sleeve, and effectively improves the damping positioning precision.
It should be understood that, although the steps in the flowcharts related to the embodiments as described above are sequentially displayed as indicated by arrows, the steps are not necessarily performed sequentially as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least a part of the steps in the flowcharts related to the embodiments described above may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, and the execution order of the steps or stages is not necessarily sequential, but may be performed alternately or alternately with other steps or at least a part of the steps or stages in other steps.
Based on the same inventive concept, the embodiment of the present application further provides a casing wetting diagnosis device based on the FBG temperature sensor array for implementing the above mentioned casing wetting diagnosis method based on the FBG temperature sensor array. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the method, so the specific definitions in one or more embodiments of the device for diagnosing sleeve wetting based on an FBG temperature sensor array provided below can be referred to the definitions in the above method for diagnosing sleeve wetting based on an FBG temperature sensor array, and are not repeated here.
In one embodiment, as shown in fig. 7, there is provided a casing wetting diagnosis device based on FBG temperature sensor array, comprising: an acquisition module 702, an identification module 704, a correction module 706, a determination module 708, and a determination module 710, wherein:
an obtaining module 702, configured to obtain temperature data of different height positions of the surface of the casing to be diagnosed, where the temperature data are collected by a temperature sensor array;
an identification module 704, configured to determine a suspected damped bushing in the bushing to be diagnosed according to temperature data corresponding to each temperature sensor in the temperature sensor array;
a correcting module 706, configured to correct the temperature data corresponding to the suspected damped bushing to obtain corrected temperature data;
a determining module 708, configured to determine that the suspected damped sleeve is a damped sleeve according to the corrected temperature data;
the determining module 710 is configured to determine a target wetting position in the wetting sleeve according to the temperature data corresponding to the wetting sleeve.
In one embodiment, the identification module 704 is further configured to obtain average temperature data corresponding to each diagnostic reference plane according to the temperature data corresponding to each temperature sensor; the average temperature data is used for representing the average value of the temperature values correspondingly measured by the temperature sensors in the corresponding diagnosis reference surface; determining abnormal reference surfaces in the diagnosis reference surfaces according to the average temperature data corresponding to the diagnosis reference surfaces; determining the sleeve to be diagnosed corresponding to the abnormal reference surface as the suspected damped sleeve; the sleeve to be diagnosed comprises at least one diagnosis reference surface, the diagnosis reference surface is a plane which is perpendicular to the central axis of the sleeve to be diagnosed and is provided with the temperature sensors, and included angles formed by any two adjacent temperature sensors in the diagnosis reference surface and the central axis of the sleeve to be diagnosed are equal.
In one embodiment, the calibration module 706 is further configured to obtain an ambient temperature of an environment where the suspected damped bushing is located; and correcting the temperature data corresponding to the suspected damped sleeve according to the environment temperature to obtain the corrected temperature data.
In one embodiment, the determining module 708 is further configured to obtain current data of the casing to be diagnosed corresponding to the casing to be diagnosed; acquiring reference temperature data corresponding to a reference casing in a normal working state; the reference current data corresponding to the reference bushing is equal to the current data of the bushing to be diagnosed; and under the condition that the difference value between the corrected temperature data and the reference temperature data is larger than a preset difference value threshold value, judging that the suspected sleeve pipe affected with damp is the sleeve pipe affected with damp.
In one embodiment, the determining module 710 is further specifically configured to perform linear fitting on the temperature data corresponding to the temperature sensors located on the same column in the temperature sensor array, respectively, to obtain a linear fitting result; determining a tidal surface in the tidal casing according to the linear fitting result; determining target measuring points in the candidate measuring points corresponding to the temperature sensors in the affected surface; and determining the target damping position in the damping sleeve according to the position information of the target measuring point.
In one embodiment, the determining module 710 is further configured to determine a deviation between temperature data corresponding to any one of the temperature sensors and temperature data corresponding to other temperature sensors; the other temperature sensors are temperature sensors in the same column except any one temperature sensor; determining a target temperature sensor in each temperature sensor according to the corresponding deviation of each temperature sensor; the deviation corresponding to the target temperature sensor is maximum; determining the plane where the target temperature sensor is located as a damped surface in the damped sleeve; the moisture-affected surface is perpendicular to the central axis of the sleeve to be diagnosed.
The modules in the above described FBG temperature sensor array based casing wetting diagnosis apparatus can be implemented in whole or in part by software, hardware and their combination. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as shown in fig. 8. The computer apparatus includes a processor, a memory, an input/output interface, a communication interface, a display unit, and an input device. The processor, the memory and the input/output interface are connected by a system bus, and the communication interface, the display unit and the input device are connected by the input/output interface to the system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The input/output interface of the computer device is used for exchanging information between the processor and an external device. The communication interface of the computer device is used for communicating with an external terminal in a wired or wireless manner, and the wireless manner can be realized through WIFI, a mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by a processor to implement a method for diagnosing wetting of a casing based on an array of FBG temperature sensors. The display unit of the computer device is used for forming a visual picture and can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the configuration shown in fig. 8 is a block diagram of only a portion of the configuration associated with the present application, and is not intended to limit the computing device to which the present application may be applied, and that a particular computing device may include more or less components than those shown, or may combine certain components, or have a different arrangement of components.
In one embodiment, a computer device is further provided, which includes a memory and a processor, the memory stores a computer program, and the processor implements the steps of the above method embodiments when executing the computer program.
In an embodiment, a computer-readable storage medium is provided, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
In an embodiment, a computer program product is provided, comprising a computer program which, when being executed by a processor, carries out the steps of the above-mentioned method embodiments.
It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) referred to in the present application are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of the related data need to comply with the relevant laws and regulations and standards of the relevant countries and regions.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, database, or other medium used in the embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, high-density embedded nonvolatile Memory, resistive Random Access Memory (ReRAM), magnetic Random Access Memory (MRAM), ferroelectric Random Access Memory (FRAM), phase Change Memory (PCM), graphene Memory, and the like. Volatile Memory can include Random Access Memory (RAM), external cache Memory, and the like. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM), among others. The databases referred to in various embodiments provided herein may include at least one of relational and non-relational databases. The non-relational database may include, but is not limited to, a block chain based distributed database, and the like. The processors referred to in the embodiments provided herein may be general purpose processors, central processing units, graphics processors, digital signal processors, programmable logic devices, quantum computing based data processing logic devices, etc., without limitation.
All possible combinations of the technical features in the above embodiments may not be described for the sake of brevity, but should be considered as being within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, and these are all within the scope of protection of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.
Claims (8)
1. A method for diagnosing wetting of a casing based on an FBG temperature sensor array, the method comprising:
acquiring temperature data of different height positions of the surface of a sleeve to be diagnosed, which are acquired by a temperature sensor array;
according to the temperature data corresponding to each temperature sensor in the temperature sensor array, determining a suspected damped sleeve in the sleeve to be diagnosed;
correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data;
according to the corrected temperature data, judging that the suspected damped sleeve is a damped sleeve;
determining a target damped position in the damped sleeve according to the temperature data corresponding to the damped sleeve, wherein the temperature data corresponding to the temperature sensors on the same column in the temperature sensor array are subjected to linear fitting respectively to obtain linear fitting results; determining a tidal surface in the tidal casing according to the linear fitting result; determining target measuring points in the candidate measuring points corresponding to the temperature sensors in the affected surface; according to the position information of the target measuring point, determining a target damping position in the damping sleeve, and determining the deviation between the temperature data corresponding to any one temperature sensor and the temperature data corresponding to other temperature sensors; the other temperature sensors are temperature sensors in the same column except any one temperature sensor; determining a target temperature sensor in each temperature sensor according to the corresponding deviation of each temperature sensor; the deviation corresponding to the target temperature sensor is maximum; determining the plane where the target temperature sensor is located as a moisture surface in the moisture sleeve; the moisture-affected surface is perpendicular to the central axis of the sleeve to be diagnosed.
2. The method according to claim 1, wherein the casing to be diagnosed comprises at least one diagnosis reference surface, the diagnosis reference surface is a plane perpendicular to a central axis of the casing to be diagnosed, the temperature sensors exist in the plane, included angles formed by any two adjacent temperature sensors in the diagnosis reference surface and the central axis of the casing to be diagnosed are equal, and the suspected humidified casing in the casing to be diagnosed is determined according to the temperature data corresponding to each temperature sensor in the temperature sensor array, comprising:
acquiring average temperature data corresponding to each diagnosis reference surface according to the temperature data corresponding to each temperature sensor; the average temperature data is used for representing the average value of the temperature values correspondingly measured by the temperature sensors in the corresponding diagnosis reference plane;
determining abnormal reference surfaces in the diagnosis reference surfaces according to the average temperature data corresponding to the diagnosis reference surfaces;
and determining the sleeve to be diagnosed corresponding to the abnormal reference surface as the suspected damped sleeve.
3. The method according to claim 1, wherein the correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data comprises:
acquiring the environmental temperature of the environment where the suspected damped sleeve is located;
and correcting the temperature data corresponding to the suspected damped sleeve according to the environment temperature to obtain the corrected temperature data.
4. The method according to any one of claims 1 to 3, wherein said determining that the suspected wetted cannula is a wetted cannula based on the corrected temperature data comprises:
acquiring suspected damped sleeve current data corresponding to the suspected damped sleeve;
acquiring reference temperature data corresponding to a reference casing in a normal working state; the reference current data corresponding to the reference casing is equal to the suspected damped casing current data;
and under the condition that the difference value between the corrected temperature data and the reference temperature data is larger than a preset difference value threshold value, judging that the suspected damped sleeve is the damped sleeve.
5. A system for diagnosing wetting of a casing based on an FBG temperature sensor array, the system comprising a temperature sensor array and a controller;
each temperature sensor in the temperature sensor array is arranged at different height positions on the surface of the casing to be diagnosed; the temperature sensor is an optical fiber temperature sensor; a graphene tube is sleeved in an optical fiber grid region in the optical fiber temperature sensor; epoxy resin is coated at the joint between the graphene tube and the optical fiber grid region;
the controller for performing the steps of the method of any one of claims 1 to 4.
6. A device for diagnosing wetting of a bushing based on an array of FBG temperature sensors, the device comprising:
the acquisition module is used for acquiring temperature data of different height positions of the surface of the sleeve to be diagnosed, which are acquired by the temperature sensor array;
the identification module is used for determining a suspected damped sleeve in the sleeve to be diagnosed according to the temperature data corresponding to each temperature sensor in the temperature sensor array;
the correction module is used for correcting the temperature data corresponding to the suspected damped sleeve to obtain corrected temperature data;
the judging module is used for judging the suspected damped sleeve to be a damped sleeve according to the corrected temperature data;
the determining module is used for determining a target damp position in the damp sleeve according to the temperature data corresponding to the damp sleeve, wherein the temperature data corresponding to the temperature sensors on the same column in the temperature sensor array are subjected to linear fitting respectively to obtain a linear fitting result; determining a damped surface in the damped sleeve according to the linear fitting result; determining target measuring points in the candidate measuring points corresponding to the temperature sensors in the affected surface; according to the position information of the target measuring point, determining a target damping position in the damping sleeve, and determining the deviation between the temperature data corresponding to any one temperature sensor and the temperature data corresponding to other temperature sensors; the other temperature sensors are temperature sensors in the same column except any one temperature sensor; determining a target temperature sensor in each temperature sensor according to the corresponding deviation of each temperature sensor; the deviation corresponding to the target temperature sensor is maximum; determining the plane where the target temperature sensor is located as a moisture surface in the moisture sleeve; the moisture-affected surface is perpendicular to the central axis of the sleeve to be diagnosed.
7. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that the processor, when executing the computer program, implements the steps of the method of any of claims 1 to 4.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 4.
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| US20160116670A1 (en) * | 2013-05-24 | 2016-04-28 | Ehsan Toyserkani | Multi-parameter optical sensor and method for optical sensor manufacturing |
| WO2019169620A1 (en) * | 2018-03-09 | 2019-09-12 | 友隆电器工业(深圳)有限公司 | Method and device for detecting wet garment |
| CN110375888B (en) * | 2019-07-01 | 2021-04-27 | 中国第一汽车股份有限公司 | Method and apparatus for diagnosing coolant temperature sensor, vehicle, and storage medium |
| CN113687156B (en) * | 2021-08-07 | 2022-09-20 | 郑州海威光电科技有限公司 | Method for assisting in judging hidden danger of power equipment by utilizing infrared chart |
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