CN107314817A - The diagnostic method and device of a kind of electrical equipment fault - Google Patents
The diagnostic method and device of a kind of electrical equipment fault Download PDFInfo
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- CN107314817A CN107314817A CN201710447341.7A CN201710447341A CN107314817A CN 107314817 A CN107314817 A CN 107314817A CN 201710447341 A CN201710447341 A CN 201710447341A CN 107314817 A CN107314817 A CN 107314817A
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- 238000013459 approach Methods 0.000 claims abstract description 68
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- 235000013399 edible fruits Nutrition 0.000 claims description 3
- 238000003745 diagnosis Methods 0.000 abstract description 33
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- 238000010586 diagram Methods 0.000 description 20
- 238000012544 monitoring process Methods 0.000 description 12
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- 206010020843 Hyperthermia Diseases 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/0096—Radiation pyrometry, e.g. infrared or optical thermometry for measuring wires, electrical contacts or electronic systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/52—Radiation pyrometry, e.g. infrared or optical thermometry using comparison with reference sources, e.g. disappearing-filament pyrometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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Abstract
The invention discloses a kind of diagnostic method of electrical equipment fault and device, to solve the inaccurate problem of Fault Diagnosis for Electrical Equipment result present in prior art.The linear thermometric position of full section is previously provided with each phase of the power equipment to be diagnosed, at least two temperature measuring points are provided with the linear thermometric position of full section set in each phase, for at least two temperature measuring points that are set in each phase, at least one temperature measuring point is located at the upper semisection at the linear thermometric position of full section of the phase, at least one temperature measuring point is located at the lower semisection at the linear thermometric position of full section of the phase, and this method includes：According to the infrared image of the power equipment to be diagnosed received and each temperature measuring point pre-set, it is determined that the temperature value of current each temperature measuring point；Judge whether that temperature approach is more than two temperature measuring points of the temperature difference threshold of setting；If it does, sending alarm information, the accuracy of Fault Diagnosis for Electrical Equipment result is improved.
Description
Technical field
The present invention relates to the diagnostic method and device of technical field of electric power, more particularly to a kind of electrical equipment fault.
Background technology
With the rapid development of economy, the demand to electricity is also being continuously increased, the life of present people all the time all from
The demand to electricity is not opened, and each power failure all upsets the normal life and work of people, therefore safe power supply has quite
Importance, ensure power equipment especially electric power primary equipment safe operation be particularly important.
Temperature is to investigate an important parameter of power equipment safety operation, just has to the temperature detection of power equipment and compels
Cutting property.Power equipment in the process of running, due to reasons such as device interior or external environments, it may appear that loop resistance loss increase
Greatly, dielectric loss increase, iron loss increase, voltage's distribiuting exception and Leakage Current increase, oil starvation and other failures etc., and equipment is exhausted
The defects such as edge, conductor can often be embodied in early stage in temperature anomaly method.On the other hand, power equipment structure, material
Can be affected by temperature it is larger, surface temperature analysis can directly reflect the internal operation state of power equipment.Therefore, electric power is set
Standby surface temperature carries out diagnostic analysis, it can be found that power equipment whether there is failure, to carry out investigation solution in time.
In electromagnetic spectrum, 0.4~0.75 μm of (micron) wave band that human eye can be perceived directly is referred to as visible light wave range, wavelength
Electromagnetic wave from 0.75 to 1000 μm is referred to as infrared band.The shortwave end of infrared band is adjacent with the red light of visible ray, long wave
End connects with microwave.Visible radiation essentially from hyperthermia radiation source, such as gas of the sun, high-temp combustion, scorching hot metal, and
The object of any temperature present in nature, there is infra-red radiation.Infrared thermal imaging thermometry by perceiving infra-red radiation,
Infra-red radiation is changed into temperature value and is widely used in measuring surface of solids temperature, wherein applied to power equipment
In thermometric fault diagnosis.
The method for applying infra-red radiation diagnosing electric power failure in the prior art, mainly thermal infrared imager shoot electric power
The infrared image of equipment, obtains the Current Temperatures of the temperature measuring point of the power equipment, and by the current of the temperature measuring point of the power equipment
Temperature is saved in server, and the historical temperature that server is directed to the Current Temperatures of the temperature measuring point and locally preserved analyzes the electricity
The temperature rise situation of power equipment, if temperature rise situation meets failure temperature rise situation set in advance, then it is assumed that the power equipment occurs
Failure, then send warning information.In addition user can also realize the search of failure power equipment, infrared monitoring by controllable head
Head meet from motion tracking screen user setting temperature value or temperature range multiple target points, using the plurality of target point as
Multiple temperature measuring points of multiple power equipments, and the temperature value of each target point in the plurality of target point is measured simultaneously, if target
The temperature value of point reaches the temperature threshold of setting, then it is assumed that the temperature value of the temperature measuring point reaches the temperature threshold of setting, the thermometric
Power equipment where point breaks down, then sends a warning message.
And in actual applications, the surface temperature of power equipment is by many factors such as extraneous natural environment and itself load
Influence, so according to the Current Temperatures of the temperature measuring point of power equipment temperature rise situation corresponding with the historical temperature of temperature measuring point, to sentence
Disconnected power equipment whether failure may be inaccurate；And tracked by infrared monitoring head and meet set temperature value or temperature range
Multiple target points, because the external environment of power equipment is complex, infrared monitoring head tracking target point in addition to power equipment,
The sun, light, the automobile of movement or passerby of walking etc. are also possible that, leads to not accurately realize for power equipment temperature
The measurement of degree, so as to cause the diagnostic result for electrical equipment fault inaccurate.
The content of the invention
The present invention provides a kind of diagnostic method and device of electrical equipment fault, electric present in prior art to solve
The inaccurate problem of power equipment fault diagnosis result.
It is described to be diagnosed the invention provides a kind of diagnostic method of electrical equipment fault in order to solve the above problems
It is previously provided with each phase of power equipment on the linear thermometric position of full section set in the linear thermometric position of full section, each phase
At least two first temperature measuring points are provided with, at least two first temperature measuring points that are set in each phase, at least one first
Temperature measuring point is located at the upper semisection at the linear thermometric position of full section of the phase, and the full section that at least one first temperature measuring point is located at the phase is linear
The lower semisection at thermometric position, this method includes：
According to the infrared image of the power equipment to be diagnosed received and each first temperature measuring point pre-set, it is determined that
The temperature value of current each first temperature measuring point；
Judge whether that temperature approach is more than two the first temperature measuring points of the temperature difference threshold of setting；
If it does, sending alarm information.
Further, it is described to judge whether two the first temperature measuring point bags that temperature approach is more than the temperature difference threshold of setting
Include：
For at least two first temperature measuring points pre-set in each phase, at least two first thermometrics in the phase are judged
It is more than two the first temperature measuring points of the first temperature difference threshold of setting in point with the presence or absence of temperature approach.
Further, it is described to judge whether two the first temperature measuring point bags that temperature approach is more than the temperature difference threshold of setting
Include：
For the first temperature measuring point pre-set in different phases, judge whether to be located in two different phases, and the temperature difference
Two first temperature measuring points of the value more than the second temperature difference threshold of setting.
Further, after the temperature value for determining current each first temperature measuring point, the temperature difference is judged whether described
Before two the first temperature measuring points of the value more than the temperature difference threshold of setting, methods described also includes：
For each phase, according to the infrared image, it is determined that the temperature curve at the linear thermometric position of full section of the current phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；
For each phase, according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, update
The temperature value of each first temperature measuring point in the phase.
Further, at least two second temperature measuring points are previously provided with the fin of the power equipment to be diagnosed,
It is more than two the first temperature measuring points of the temperature difference threshold of setting if there is no temperature approach, methods described also includes：
It is true according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency
Algorithm is determined, it is determined that the frequency energy and/or the frequency energy of the second temperature measuring point of each first temperature measuring point；
Judge whether the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point are respectively positioned on setting
In the range of frequency energy；
If not, sending a warning message.
Further, the quantity of the first temperature measuring point pre-set in every phase is identical, and set in different phases
The first temperature measuring point of correspondence is located at identical thermometric position.
Further, first temperature measuring point for being pre-set in different phases, judges whether to be located at two not
With in phase, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting and included：
For the first temperature measuring point pre-set in different phases, judge whether to be located at identical in two different phases and survey
Warm position, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting.
The invention provides a kind of diagnostic device of electrical equipment fault, the device includes：
Temperature determination module, for according to the infrared image of power equipment to be diagnosed received and pre-set it is every
Individual first temperature measuring point, it is determined that the temperature value of current each first temperature measuring point, wherein each phase of the disconnected power equipment of the follow-up
On be previously provided with the linear thermometric position of full section set in the linear thermometric position of full section, each phase and be provided with least two
One temperature measuring point, at least two first temperature measuring points that are set in each phase, at least one first temperature measuring point is located at the phase
The upper semisection at the linear thermometric position of full section, at least one first temperature measuring point is located at the lower half at the linear thermometric position of full section of the phase
Section；
Temperature difference judge module, for judging whether that temperature approach is more than two the first thermometrics of the temperature difference threshold of setting
Point；If it does, triggering alarm sending module；
Sending module is alerted, for sending alarm information.
Further, the temperature difference judge module, specifically at least two first for being pre-set in each phase
Temperature measuring point, judges at least two first temperature measuring points in the phase with the presence or absence of temperature approach more than the first temperature difference threshold set
Two the first temperature measuring points；If it does, triggering alarm sending module.
Further, the temperature difference judge module, specifically for the first temperature measuring point for being pre-set in different phases, sentences
Disconnected whether there is is located in two different phases, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting；Such as
Fruit is present, triggering alarm sending module.
Further, the temperature difference judge module, specifically for the first temperature measuring point for being pre-set in different phases, sentences
Disconnected whether there is is located at identical thermometric position in two different phases, and temperature approach is more than two of the second temperature difference threshold of setting
First temperature measuring point；If it does, triggering alarm sending module.
Further, described device also includes：
Temperature update module, for for each phase, according to the infrared image, it is determined that the full section of the current phase is linearly surveyed
The temperature curve at warm position；The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；For every
One phase, according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, updates each first in the phase
The temperature value of temperature measuring point.
Further, described device also includes：
Judge module is determined, for if it is determined that being more than two the first thermometrics of the temperature difference threshold of setting in the absence of temperature approach
Point, determines to calculate according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency
Method, it is determined that the frequency energy and/or the frequency energy of the second temperature measuring point of each first temperature measuring point, wherein the disconnected electric power of the follow-up
At least two second temperature measuring points are previously provided with the fin of equipment；Judge each first temperature measuring point frequency energy and/or
Whether the frequency energy of the second temperature measuring point is respectively positioned in the range of the frequency energy of setting；If not, triggering alarm sending module.
The invention provides a kind of diagnostic method of electrical equipment fault and device, the power equipment to be diagnosed it is every
It is previously provided with one phase on the linear thermometric position of full section set in the linear thermometric position of full section, each phase and is provided with least two
Individual first temperature measuring point, at least two first temperature measuring points that are set in each phase, at least one first temperature measuring point is located at should
The upper semisection at the linear thermometric position of full section of phase, at least one first temperature measuring point is located under the linear thermometric position of full section of the phase
Half section, this method includes：According to the infrared image of the power equipment to be diagnosed received and each first survey pre-set
Warm spot, it is determined that the temperature value of current each first temperature measuring point；Judge whether that temperature approach is more than the two of the temperature difference threshold of setting
Individual first temperature measuring point；If it does, sending alarm information.Each phase in the present invention for power equipment to be diagnosed is set in advance
The linear thermometric position of full section is put, the upper semisection at the linear thermometric position of full section of each phase sets at least one first temperature measuring point, often
The lower semisection at the linear thermometric position of full section of one phase sets at least one first temperature measuring point, treat diagnosis power equipment it is each
The upper semisection and lower semisection at the linear thermometric position of full section of phase are all provided with least one first temperature measuring point, and are surveyed for first
The current temperature value of warm spot carries out the judgement of temperature approach, improves the accuracy of Fault Diagnosis for Electrical Equipment result.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of schematic diagram of the diagnosis process for electrical equipment fault that the embodiment of the present invention 1 is provided；
Fig. 2A is a kind of infrared image for power equipment that the embodiment of the present invention 1 is provided；
Fig. 2 B are the schematic diagram of the linear temperature distribution curve for the power equipment that the embodiment of the present invention 1 is provided；
Fig. 3 is a kind of infrared image for power equipment to be diagnosed that the embodiment of the present invention 3 is provided；
Fig. 4 is a kind of three-phase linear temperature distributing curve diagram for transformer that the embodiment of the present invention 3 is provided；
Fig. 5 A are a kind of schematic diagram of the linear temperature distribution curve for upper section sleeve pipe that the embodiment of the present invention 5 is provided；
Fig. 5 B are a kind of target spectrum curve for upper section sleeve pipe that the embodiment of the present invention 5 is provided；
Fig. 6 is a kind of infrared image for radiating fin of transformer that the embodiment of the present invention 5 is provided；
Fig. 7 A are a kind of schematic diagram of the linear temperature distribution curve for radiating fin of transformer that the embodiment of the present invention 5 is provided；
Fig. 7 B are a kind of target spectrum curve for radiating fin of transformer that the embodiment of the present invention 5 is provided；
Fig. 8 A are a kind of schematic diagram of the linear temperature distribution curve for power equipment that the embodiment of the present invention 5 is provided；
Fig. 8 B are a kind of target spectrum curve for power equipment that the embodiment of the present invention 5 is provided；
Fig. 9 is a kind of diagnostic method flow chart for electrical equipment fault that the embodiment of the present invention 6 is provided；
Figure 10 is a kind of structural representation of the diagnostic system for electrical equipment fault that the embodiment of the present invention 6 is provided；
A kind of diagnostic device schematic diagram of Figure 11 electrical equipment faults provided in an embodiment of the present invention.
Embodiment
In order to improve the accuracy of Fault Diagnosis for Electrical Equipment result, the embodiments of the invention provide a kind of event of power equipment
The diagnostic method and device of barrier.
In order that the object, technical solutions and advantages of the present invention are clearer, make below in conjunction with the accompanying drawing present invention into one
It is described in detail on step ground, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Embodiment 1：
Fig. 1 is a kind of schematic diagram of the diagnosis process of electrical equipment fault provided in an embodiment of the present invention, and the process includes
Following steps：
S101：According to the infrared image of the power equipment to be diagnosed received and each first thermometric pre-set
Point, it is determined that the temperature value of current each first temperature measuring point.
The diagnostic method of electrical equipment fault provided in an embodiment of the present invention is applied to server, and the server can connect
The infrared image of power equipment to be diagnosed is received, is pre-set according to the infrared image, and for power equipment to be diagnosed
Each first temperature measuring point, it is determined that the temperature value of current each first temperature measuring point.
Power equipment to be diagnosed is primarily referred to as converting station electric power primary equipment described in the embodiment of the present invention.The follow-up
The linear thermometric portion of full section set in the linear thermometric position of full section, each phase is previously provided with each phase of disconnected power equipment
At least two first temperature measuring points are provided with position, at least two first temperature measuring points that are set in each phase, at least one
First temperature measuring point is located at the upper semisection at the linear thermometric position of full section of the phase, and at least one first temperature measuring point is located at the full section of the phase
The lower semisection at linear thermometric position.
For the power equipments such as such as transformer, the sleeve pipe correspondence three-phase of transformer, wherein each phase of each sleeve pipe correspondence, institute
The linear thermometric position of full section is stated to be set in advance in the corresponding each phase of each sleeve pipe；For power equipments such as such as arresters, keep away
The porcelain vase correspondence three-phase of thunder device, wherein each phase of each porcelain vase correspondence, the linear thermometric position of full section is set in advance in each
In the corresponding each phase of porcelain vase.
The infrared image wait the power equipment diagnosed that server is received can be sent out after the collection of infrared collecting equipment
Send, the infrared image can be video image, the infrared image includes pcolor picture and temperature data image, wherein pseudo-
Each pixel in each pixel and temperature data image in coloured picture picture is one-to-one relation, wherein described infrared
Collecting device includes but is not limited to thermal camera.The prison of each position of diagnosing electric power in all directions is treated in order to realize
Control, the thermal camera may be mounted on high-speed holder.Server is received after infrared image, is wrapped according in infrared image
Each pixel in the pcolor picture included corresponding each pixel in temperature data image, it may be determined that in pcolor picture
The corresponding temperature data of each pixel so that server is according to infrared image and each first thermometric pre-set
Point, it is determined that the temperature value of current each first temperature measuring point.
The process for pre-setting each first temperature measuring point for power equipment to be diagnosed includes：Set in electric power to be diagnosed
A thermometric line is provided with standby each phase, the corresponding position of the thermometric line in each phase is regard as the linear thermometric portion of full section
At least two first temperature measuring points are provided with the linear thermometric position of full section set in position, each phase, for being set in each phase
At least two first temperature measuring points in, at least one first temperature measuring point be located at the phase the linear thermometric position of full section upper semisection,
At least one first temperature measuring point is located at the lower semisection at the linear thermometric position of full section of the phase.
Can be specifically, for being provided with least two first temperature measuring points on the linear thermometric position of full section of each phase,
The mark of each first temperature measuring point can be specifically set in each phase, be marked for example with certain mode, by adopting
Collect natural light image and the infrared image of the power equipment, it may be determined that each first temperature measuring point being marked is in infrared image
Upper corresponding pixel, may thereby determine that the corresponding temperature value of each first temperature measuring point, or server are set by the electric power
Standby natural light image and infrared image, record are arranged on each first temperature measuring point on the linear thermometric position of the full section of each phase
Coordinate in natural light image, it is determined that each first temperature measuring point corresponding pixel in infrared image, may thereby determine that
The corresponding temperature value of each first temperature measuring point.
Or or after the infrared image of power equipment is collected, according to the setting of the monitoring personnel received
Operation, directly carries out the setting of the first temperature measuring point in each phase of the corresponding power equipment to be diagnosed of infrared image.
For the corresponding each phase of sleeve pipe or porcelain vase of power equipment to be diagnosed, by the top central point of the phase and bottom
The line segment that central point is constituted is set to thermometric line, using the linear thermometric position of the full section of the thermometric line of the phase as the phase, according to this
The top central point of phase Part I corresponding with the midpoint of the line segment, is defined as the upper half at the linear thermometric position of full section of the phase
Section；According to the bottom centre of phase point Part II corresponding with the midpoint of the line segment, it is defined as the linear thermometric of full section of the phase
The lower semisection at position, the upper semisection at the linear thermometric position of the full section of the phase sets at least one temperature measuring point, and in the phase
The lower semisection at the linear thermometric position of full section sets at least one temperature measuring point.
In addition when setting temperature measuring point, it can be configured according to the easy trouble location of diagnosing electric power is treated, such as follow-up
When disconnected power equipment is transformer, due to easily occurring the failures such as oil starvation at transformer line sleeve pipe, it is possible to surveyed setting
During warm spot, temperature measuring point is set to be diagnosed at transformer line sleeve pipe.In diagnosis of the reality to electrical equipment fault, it is
Improve the accuracy of diagnostic result, can be the linear thermometric position of full section of each phase of power equipment upper semisection and under
Half section sets the quantity of the temperature measuring point pre-set on multiple temperature measuring points, and each phase identical respectively, and in different phases
The corresponding temperature measuring point of setting is located at identical thermometric position, in order to the temperature difference point at different corresponding identical thermometric positions
Analysis.
S102：Judge whether that temperature approach is more than two the first temperature measuring points of the temperature difference threshold of setting；If it does, entering
Row S103.
For power equipment, the failure that rheology is produced is typically embodied by：The temperature value of the trouble location of power equipment
There is more obvious difference with the temperature value of normal portions, therefore by judging whether that temperature approach is more than the two of temperature difference threshold
Individual first temperature measuring point, it can be determined that whether power equipment there may be failure.
The temperature difference threshold is preserved in the server, and the temperature difference threshold can be 1 degree Celsius (DEG C), 2 degrees Celsius or 5 take the photograph
Family name's degree etc..More preferably, the temperature difference threshold is specially how many degrees Celsius, can be basis《The charging equipments of DT/L 664 2008 are red
Outer diagnostic application specification》Come what is determined.
Server can be according to each pixel in the temperature data image and its corresponding temperature value, according to advance
The temperature distribution history of preservation determines algorithm, it is determined that the linear temperature distribution curve of power equipment to be diagnosed, Fig. 2A is this hair
A kind of infrared image for power equipment that bright embodiment is provided, the infrared image includes pcolor picture and temperature data image,
Server can determine the linear thermometric position of each corresponding full section of power equipment according to the pcolor picture, each phase
It is with discrete distribution in the temperature data image being provided with the linear thermometric position of full section in the first temperature measuring point, the infrared image
Mode is recorded to each pixel and its corresponding temperature value, and Fig. 2 B are that a kind of electric power provided in an embodiment of the present invention is set
The schematic diagram of standby linear temperature distribution curve, the linear temperature distribution curve of the power equipment shown in Fig. 2 B is according to Fig. 2A institutes
What the infrared image shown was determined, abscissa is surveyed for each the first of the linear thermometric position of full section in the linear temperature distribution curve
Warm spot, ordinate is the temperature value of each first temperature measuring point at the linear thermometric position of full section, and server passes through the temperature that pre-saves
Degree distribution curve determines algorithm, selects the full section for being located at the power equipment in each pixel of temperature data image linearly to survey
Pixel on warm position, so that it is determined that the temperature value of each first temperature measuring point at the linear thermometric position of full section, and full section are linear
The corresponding linear temperature distribution curve in thermometric position, wherein the temperature distribution history pre-saved determines that algorithm is：
M is temperature data image
The abscissa of middle pixel, span is 0~M, and wherein M value is according to pixel number horizontal in temperature data image
It is determined that, n is the ordinate of pixel in temperature data image, and span is 0~N, and wherein N value is according to temperature data figure
Longitudinal pixel number is determined as in, XaFor the abscissa of the linear thermometric position correspondence sequence of full section of each phase, YaFor
The ordinate of the linear thermometric position correspondence sequence of full section of each phase, if determining algorithm according to said temperature distribution curve
The A of determination value is less than or equal to 1, then it is assumed that point (m, n) is located on the linear thermometric position of full section of each phase, then by the point
(m, n) corresponding temperature value PmnIt is used as the first temperature measuring point of correspondence (X at the linear thermometric position of full section in each phasea,Ya) temperature
Angle value.
The server determines algorithm by the temperature distribution history pre-saved, selects each picture of temperature data image
Pixel in vegetarian refreshments on the linear thermometric position of full section of the power equipment, so that it is determined that the linear thermometric position of full section
The temperature value of each first temperature measuring point, and the corresponding linear temperature distribution curve in the linear thermometric position of full section belong to prior art,
The process is not repeated in embodiments of the present invention.
S103：Send alarm information.
If server is directed to all temperature measuring points, judge there are two surveys of the temperature difference threshold that temperature approach is more than setting
Warm spot, server thinks that current power equipment to be diagnosed has jump in temperature, and power equipment to be diagnosed there may be failure,
Send a warning message.
The specifying information of temperature measuring point temperature anomaly can be carried and sent in warning information by server, can also directly be sent out
Warning information is sent, monitoring personnel is received the specific letter for determining temperature measuring point temperature anomaly after warning information further according to infrared image
Breath, wherein the specifying information of the temperature measuring point temperature anomaly includes the number of the temperature measuring point temperature anomaly of power equipment to be diagnosed
The information such as amount, temperature value.
Warning information can be sent to the remote supervisory and control(ling) equipment at main station monitoring center or believe alarm by server
Breath is sent to hand-held monitoring equipment of monitoring personnel etc..
If server is directed to all temperature measuring points, judge to be not present two of the temperature difference threshold that temperature approach is more than setting
Temperature measuring point, server thinks that current power equipment to be diagnosed is normal, does not send a warning message.
Because each phase in the embodiment of the present invention for power equipment to be diagnosed pre-sets the linear thermometric portion of full section
Position, the upper semisection at the linear thermometric position of full section of each phase sets at least one temperature measuring point, the linear thermometric portion of full section of each phase
Position lower semisection at least one temperature measuring point is set, treat each phase of the power equipment of diagnosis the linear thermometric position of full section it is upper
Half section and lower semisection are all provided with least one temperature measuring point, and carry out sentencing for temperature approach for the current temperature value of temperature measuring point
It is disconnected, improve the accuracy of Fault Diagnosis for Electrical Equipment result.
Embodiment 2：
In order to further improve the accuracy of Fault Diagnosis for Electrical Equipment result, on the basis of above-described embodiment, this hair
In bright embodiment, two first temperature measuring points for judging whether temperature difference threshold of the temperature approach more than setting include：
For at least two first temperature measuring points pre-set in each phase, at least two first thermometrics in the phase are judged
It is more than two the first temperature measuring points of the first temperature difference threshold of setting in point with the presence or absence of temperature approach.
If power equipment to be diagnosed is converting station electric power primary equipment, the temperature value of the first temperature measuring point of each phase can
With the temperature value for the first temperature measuring point for characterizing each phase, so at least two first temperature measuring points set in each phase, sentencing
Two the first temperature measuring points of disconnected the first temperature difference threshold for being more than setting with the presence or absence of temperature approach, can carry out the temperature difference point to each phase
Analysis.
Server is when judging whether that temperature approach is more than two the first temperature measuring points of the first temperature difference threshold of setting, no
Any two points that can be only directed in each first temperature measuring point are judged, can also be for each phase, judge each single-phase
The linear thermometric position of full section the first temperature measuring point of upper semisection and the first temperature measuring point of lower semisection judged, so that it is determined that often
Individual single-phase with the presence or absence of failure, the diagnosis for electrical equipment fault is more comprehensive, further increases electrical equipment fault and examines
The accuracy of disconnected result.
When setting the first temperature measuring point on the linear thermometric position of full section of each phase, as much as possible and in each sleeve pipe
Upper semisection and lower semisection be all configured, to include whole positions of each phase as much as possible, can to each phase carry out temperature
Difference is analysed, and further improves the accuracy of Fault Diagnosis for Electrical Equipment result.
For each phase, the temperature approach of the temperature measuring point of any two first in the phase is calculated, can be according to any two first
Whether the temperature approach of temperature measuring point is more than the first temperature difference threshold of setting to judge that this mutually whether there is failure.But in order to reduce meter
Calculation amount, improve diagnosis efficiency, can be directed to each phase, determine the phase each first temperature measuring point temperature value in temperature most
Big value and temperature minimum value, judge whether the temperature approach of the temperature maximum and temperature minimum value is more than the first temperature difference threshold set
Value, if it is, this may mutually break down；If it is not, then this may mutually not break down.
Server can be pressed according to each pixel and its corresponding temperature value of each phase in the temperature data image
Algorithm is determined according to the temperature distribution history pre-saved, it is determined that the linear temperature distribution of each phase of power equipment to be diagnosed is bent
Line.
Because server is judging whether two of temperature approach more than the temperature difference threshold set in the embodiment of the present invention
During the first temperature measuring point, any two points that can be not only directed in each first temperature measuring point are judged, can also be for each
Phase, judges that each phase whether there is failure, the diagnosis for electrical equipment fault is more comprehensive, further increases power equipment
The accuracy of fault diagnosis result.
Embodiment 3：
In order to further improve the accuracy of Fault Diagnosis for Electrical Equipment result, on the basis of the various embodiments described above, this
In inventive embodiments, two first temperature measuring points for judging whether temperature difference threshold of the temperature approach more than setting include：
For the first temperature measuring point pre-set in different phases, judge whether to be located in two different phases, and the temperature difference
Two first temperature measuring points of the value more than the second temperature difference threshold of setting.
It is converting station electric power primary equipment for power equipment to be diagnosed, two in two different phases the respectively
The temperature approach of one temperature measuring point can characterize the corresponding alternate temperature difference of two differences, so by being located at two different phases respectively
On the first temperature measuring point in, judge whether temperature approach be more than setting temperature difference threshold two the first temperature measuring points, Ke Yizhun
Really the alternate temperature difference out of phase to two carries out temperature difference analysis.
Specifically, for corresponding first temperature difference threshold of temperature approach between each phase different parts, with for two not
With the alternate temperature difference of phase corresponding second temperature difference threshold can with it is identical can be different, first temperature difference threshold and two temperature difference
Whether identical threshold value can be basis《The charging equipment infrared diagnostics application specifications of DT/L 664 2008》Come what is determined.
Can be that server recognizes in two different phases the when carrying out temperature difference analysis to two out of phase alternate temperature difference
First temperature maximum of one phase and the first temperature minimum value, and second temperature maximum and second temperature in the second phase are most
Small value, to the first temperature maximum and the first temperature approach of second temperature minimum value, and/or the first temperature minimum value and the second temperature
Degree maximum second temperature difference judged or server recognize two difference phases in each corresponding each temperature
Maximum is spent, the temperature difference of two corresponding temperature maximums of two differences is judged.
It is preferred that the first thermometric pre-set in the accuracy in order to further improve diagnostic result, each phase
The quantity of point is identical, and the temperature measuring point of correspondence first set in different phases is located at identical thermometric position.
First temperature measuring point for being pre-set in different phases, judges whether to be located on two sleeve pipes, and temperature
Two the first temperature measuring points that difference is more than the temperature difference threshold of setting include：
For the first temperature measuring point pre-set on different sleeve pipes, judge whether to be located at identical in two different phases
Thermometric position, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting.
Server may determine that corresponding two first temperature measuring points at identical thermometric position in two different phases
Whether temperature approach is more than the temperature difference threshold of setting, is set if the corresponding temperature approach of temperature value of the temperature measuring point of each two first is all not more than
Fixed temperature difference threshold, then each phase in this two different phases may all not break down.
It is described to be located at two entire section lines of the identical thermometric position specifically in two different phases in two different phases
In two the first temperature measuring points on property thermometric position, the temperature measuring point of two of which first corresponding two out of phase tops
Heart point is apart from identical.
According to《The charging equipment infrared diagnostics application specifications of DT/L 664 2008》The corresponding alternate temperature difference of two differences surpasses
Cross 2 degrees Celsius to 3 degrees Celsius, it is necessary to which monitoring personnel carries out respective handling, it is possible to which the corresponding temperature difference of the alternate temperature difference is set
For 2 degrees Celsius.
Server can be according to each pixel and its corresponding in each two difference phase in the temperature data image
Temperature value, algorithm is determined according to the temperature distribution history pre-saved, it is determined that power equipment each two to be diagnosed is out of phase
Linear temperature distribution curve, if it is preferred that the infrared image includes the three-phase of power equipment to be diagnosed, can be true
Surely the three-phase linear temperature distribution history of power equipment to be diagnosed, the three-phase linear temperature distribution history includes each phase
Linear temperature distribution curve, to facilitate checking into trip temperature.
The embodiment of the present invention is illustrated with a specific embodiment below, Fig. 3 is provided in an embodiment of the present invention
A kind of infrared image of power equipment to be diagnosed, as shown in figure 3, power equipment to be diagnosed is transformer bushing, pin
L101, L102, L103 are from left to right followed successively by the linear thermometric position of full section that the three-phase of transformer bushing is set, per phase
The linear thermometric position of full section temperature data information, be the temperature data image in infrared image to determine, service
Device determines algorithm according to the infrared image according to the temperature distribution history pre-saved, determines every phase of transformer bushing
Linear temperature distribution curve, obtain the three-phase linear temperature distribution history of transformer bushing as shown in figure 4, wherein it is horizontal sit
Each first temperature measuring point at the linear thermometric position of full section is designated as, ordinate is each first temperature measuring point at the linear thermometric position of full section
Temperature value.Server can ground be directed to per phase top central point apart from identical each first temperature measuring point as L101, L102,
It is located at corresponding each first temperature measuring point on identical thermometric position in L103, judges to be located at two out of phase identical thermometrics
Whether the temperature approach between the temperature measuring point of each two first on position is more than the second temperature difference threshold of setting, so as to judge transformer
Whether entrance bushing there may be failure.Server, which is directed in L101, L102, L103, to be located at corresponding each the on sustained height
One temperature measuring point, judges that L101 is located at corresponding two first surveys on two out of phase identical thermometric positions with existing on L103
The temperature approach of warm spot, which is more than on the second temperature difference threshold of setting, and L102 and L103, has two out of phase identical thermometric portions
The temperature approach of corresponding two the first temperature measuring points is more than the second temperature difference threshold of setting on position.
The temperature of the temperature value of the first temperature measuring point of L101 on identical thermometric position and L103 the first temperature measuring point
The temperature difference between angle value, and L102 the first temperature measuring point temperature value and L103 the first temperature measuring point temperature value between the temperature difference
The threshold value both greater than set, then server sent a warning message to remote supervisory and control(ling) equipment, monitoring personnel is according to remote supervisory and control(ling) equipment
The warning information received, checks the corresponding three-phase linear temperature distribution history of the transformer bushing as shown in Figure 4, or
Check infrared image as shown in Figure 3, it can be determined that going out the corresponding upper semisection temperature of L101 and L102, to be below L103 corresponding
Upper semisection temperature, and the corresponding upper semisection temperature of L103 is in default temperature normal range (NR), therefore can judge exactly
The trouble location of transformer bushing is the corresponding upper semisections of L101 and L102, and it is transformer further to determine failure cause
Entrance bushing L101 and L102 oil starvation.
Because server is judging whether two of temperature approach more than the temperature difference threshold set in the embodiment of the present invention
During the first temperature measuring point, any two points that can be not only directed in each temperature measuring point are judged, can also be for each two not
With the corresponding alternate temperature difference, judge that each two is different and mutually whether there is failure, the diagnosis for electrical equipment fault is more complete
Face, further increases the accuracy of Fault Diagnosis for Electrical Equipment result.
Embodiment 4：
In order to reduce influence of the corresponding temperature value of noise spot to fault diagnosis, Fault Diagnosis for Electrical Equipment is further improved
As a result accuracy, it is described to determine current each first temperature measuring point in the embodiment of the present invention on the basis of the various embodiments described above
Temperature value after, it is described judge whether temperature approach be more than setting temperature difference threshold two the first temperature measuring points before, institute
Stating method also includes：
For each phase, according to the infrared image, it is determined that the temperature curve at the linear thermometric position of full section of the current phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；
For each phase, according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, update
The temperature value of each first temperature measuring point on the sleeve pipe.
Server according to infrared image, it is determined that the temperature of each temperature measuring point may be led due to the interference of partial noise signal
Cause has deviation, by the temperature curve the disposal of gentle filter at the linear thermometric position of full section to each phase, to the complete of each phase
Partial noise signal in the temperature curve at the linear thermometric position of section is filtered, and reduces the corresponding temperature value of noise spot to failure
The influence of diagnosis, further improves the degree of accuracy of Fault Diagnosis for Electrical Equipment result.
Signified the disposal of gentle filter method can be intended for mobile shifting method, or least square curve in the embodiment of the present invention
The method such as legal, as long as the disposal of gentle filter method that those skilled in the art commonly use or the method for same effect can be reached
.
The temperature curve at the linear thermometric position of full section of each phase can be server according to infrared image, and in advance
The temperature distribution history of preservation determines algorithm, it is determined that each phase linear temperature distribution curve.
For example, in embodiments of the present invention, the disposal of gentle filter method is：yi=Med { xi-v,...xi,
...xi+v, xnFor the temperature value of n-th of temperature measuring point in the temperature curve at the linear thermometric position of full section of each phase, xiFor each phase
The linear thermometric position of full section temperature curve in center be i when, the temperature value of i-th of temperature measuring point, xi-vCentered on position
Put the temperature value of the i-th-v temperature measuring points of i preceding v position, xi+vCentered on position i rear v position the i-th+v thermometrics
The corresponding value of point, wherein v value are m/2, and m is the filtering point total length of the bushing temperature curve, that is, has m thermometric
Point, that is, gather { xi-v,...xi,...xi+vFor the temperature value of each temperature spot in m temperature measuring point, by xi-vTo xi+vAccording to temperature
Angle value is ranked up from small to large, determines the temperature value of temperature measuring point located approximately at a midpoint, regard the temperature value as yiFiltering is defeated
Go out, m is odd number, then the center that this m point is determined is i, and v value is (m-1)/2.
Because in the embodiment of the present invention, server is smooth by the temperature curve at the linear thermometric position of full section to each phase
Filtering process, is filtered to the partial noise signal in the temperature curve of each phase, reduces the corresponding temperature value pair of noise spot
The influence of fault diagnosis, further improves the accuracy of Fault Diagnosis for Electrical Equipment result.
Embodiment 5：
In order to further improve the degree of accuracy of Fault Diagnosis for Electrical Equipment result, on the basis of the various embodiments described above, this
In inventive embodiments, at least two second temperature measuring points are previously provided with the fin of the power equipment to be diagnosed, if
It is more than two temperature measuring points of the temperature difference threshold of setting in the absence of temperature approach, methods described also includes：
It is true according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency
Algorithm is determined, it is determined that the frequency energy and/or the frequency energy of the second temperature measuring point of each first temperature measuring point；
Judge whether the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point are respectively positioned on setting
In the range of frequency energy；
If not, sending a warning message.
The corresponding temperature difference of temperature value mainly by judging two the first temperature measuring points judged due to the various embodiments described above
Value, and the failure that the voltage pyrogenicity type for power equipment is produced, it is not it is obvious that namely existing to calculate obtained temperature approach
The corresponding temperature approach of temperature value of two the first temperature measuring points is not more than the situation of the temperature difference threshold of setting, therefore by each first
The frequency energy of temperature measuring point and/or the frequency energy of the second temperature measuring point are judged, can further improve electrical equipment fault
The degree of accuracy of diagnostic result, wherein being previously provided with least two second thermometrics on the fin of the disconnected power equipment of the follow-up
Point.
Whether the frequency energy for judging each first temperature measuring point and/or the frequency energy of the second temperature measuring point are respectively positioned on and set
It in the range of fixed frequency energy can be whether the frequency energy for judging each first temperature measuring point is respectively positioned on the first frequency of setting
In energy range, it can be whether the frequency energy for judging each second temperature measuring point is respectively positioned on the second frequency energy range of setting
Whether frequency energy that is interior or judging each first temperature measuring point and the frequency energy of each second temperature measuring point are respectively positioned on and set
In the range of the 3rd fixed frequency energy, the first frequency energy range, the second frequency energy range and the 3rd frequency
Rate energy range can be identical with all same, different or part.
It is described to send a warning message, can judge that at least one first temperature measuring point is not located in first frequency energy range
Send, can be that at least one each second temperature measuring point is not located at the interior transmission of second frequency energy range or sentenced
The frequency energy of at least one the first temperature measuring point of breaking and the frequency energy of at least one the second temperature measuring point are not located at the 3rd of setting
Sent in the range of frequency energy.
The frequency energy of frequency energy and/or the second temperature measuring point for each first temperature measuring point, if first thermometric
The frequency energy of point and/or the frequency energy of the second temperature measuring point are not located in the range of the frequency energy of setting, and higher than the frequency
Energy range, then the frequency energy of the temperature measuring point belong to high fdrequency component；If the frequency energy of first temperature measuring point and/or second
The frequency energy of temperature measuring point is not located in the range of the frequency energy of setting, and is less than the frequency energy scope, then first thermometric
The frequency energy of point and/or the frequency energy of the second temperature measuring point belong to low frequency component, wherein the frequency energy scope can be
Determined according to the average value of the frequency energy of each first temperature measuring point and/or the frequency energy of each second temperature measuring point.
The failure that voltage pyrogenicity type for power equipment is produced, if the temperature of each first temperature measuring point in its each phase
There is any steps change in the thermal characteristics distribution that the temperature value of angle value and/or each second temperature measuring point is determined or part is jumped
, after determining that algorithm is handled by frequency, inherently there is high fdrequency component, and then can determine that power equipment may in transition
There is the failure of buckling generation, send a warning message.
Frequency described in the embodiment of the present invention determines that algorithm is discrete fourier transform algorithm, and those skilled in the art are in reality
During applying, the frequency determines algorithm including but not limited to discrete fourier transform algorithm.
In embodiments of the present invention, the discrete fourier transform algorithm is specially
WhereinX (n) is the temperature curve of each sleeve pipe, and N value is temperature measuring point in the temperature curve of each sleeve pipe
Quantity.
Further, in order to analyze exactly not be located at setting frequency energy scope frequency energy, the temperature of each phase
Each second temperature measuring point write music on the temperature curve of each first temperature measuring point or/and fin on line is passing through direct computation of DFT
After leaf transformation algorithm, the frequency spectrum of each second temperature measuring point on each first temperature measuring point or/and the fin in each phase is obtained,
Filter out after the component that fundamental component i.e. frequency is 0, high-frequency energy can be analyzed exactly.
Fig. 5 A are a kind of schematic diagram of the linear temperature distribution curve of upper section sleeve pipe provided in an embodiment of the present invention, such as Fig. 5 A
The linear temperature distribution curve of shown upper section sleeve pipe, it is corresponding each for each upper section sleeve pipe of power equipment to be diagnosed
Each upper temperature curve for saving the corresponding each phase of sleeve pipe is each upper section sleeve pipe in the temperature curve of phase, the embodiment of the present invention
Linear temperature distribution curve, according to the linear temperature scatter chart that sleeve pipe is saved on this, the linear temperature point to saving sleeve pipe on this
Each first temperature measuring point carries out discrete Fourier transform DFT (Discrete Fourier Transform, discrete Fu in cloth curve
In leaf transformation), obtain on this save sleeve pipe the corresponding spectrum curve of each first temperature measuring point, filter out the fundamental frequency in the spectrum curve
Component, i.e. frequency are 0 component, obtain the target spectrum curve of upper section sleeve pipe as shown in Figure 5 B, server can be identified
There is jump in temperature and the saltus step of subrange, the part as described in Fig. 5 B, it is believed that there may be pyrogenicity failure caused by voltage, send out
Warning information is sent, monitoring personnel can be according to the warning information and target spectrum curve received, it is determined that in the presence of certain energy
The low frequency energy information and high-frequency energy information of non-fundamental frequency, determine the abort situation of power equipment.
For when the power equipment diagnosed is fin on transformer, Fig. 6 is a kind of change provided in an embodiment of the present invention
The infrared image of depressor fin, is provided with multiple second temperature measuring points on radiating fin of transformer, as shown in fig. 6, the plurality of
Two temperature measuring points constitute the corresponding linear thermometric position of full section of fin, as shown in L104 in Fig. 6.Fig. 7 A are according to Fig. 6
The linear temperature distribution curve schematic diagram that infrared image is obtained, to each in the linear temperature distribution curve of the radiating fin of transformer
Second temperature measuring point carries out DFT, obtains the corresponding spectrum curve of each second temperature measuring point of the radiating fin of transformer, filters out the frequency spectrum
Fundamental component in curve, i.e. frequency are 0 component, obtain the target spectrum curve of radiating fin of transformer as shown in Figure 7 B.
Server can identify the jump in temperature that there is subrange and saltus step, as shown in Figure 7 B part, it is believed that there may be voltage
Caused pyrogenicity failure, sends a warning message, and monitoring personnel can be according to the warning information and target spectrum curve received, really
Surely there is obvious low frequency energy information and stronger high-frequency energy information, determine the abort situation of power equipment.
Fig. 8 A are a kind of schematic diagram of the linear temperature distribution curve of power equipment provided in an embodiment of the present invention, according to such as
The schematic diagram of the linear temperature distribution curve of power equipment shown in Fig. 8 A, in the linear temperature distribution curve of the power equipment
Each temperature measuring point carries out DFT, obtains the corresponding spectrum curve of each temperature measuring point of the power equipment, filters out in the spectrum curve
Fundamental component, i.e. frequency are 0 component, obtain the target spectrum curve of power equipment as shown in Figure 8 B, server can be recognized
There is no the frequency energy for the frequency energy scope for not being located at setting, it is believed that power equipment is normal, does not send a warning message.
Due to the failure that the buckling in the embodiment of the present invention for power equipment that may be present is produced, to two temperature measuring points
Temperature value respective frequencies energy judged, further improve Fault Diagnosis for Electrical Equipment result accuracy.
Embodiment 6：
On the basis of the various embodiments described above, the present invention is illustrated with a specific embodiment to above-described embodiment,
Fig. 9 is a kind of diagnostic method flow chart of electrical equipment fault provided in an embodiment of the present invention.
S901：The infrared image of power equipment is obtained, according to selection, the linear thermometric position of full section in each phase is set,
And pre-set at least two temperature measuring points on the linear thermometric position of full section set in each phase.
Power equipment to be diagnosed is transformer in the embodiment of the present invention, then the sleeve pipe correspondence three-phase of transformer, wherein often
The each phase of individual sleeve pipe correspondence, the linear thermometric position of full section is set in advance in the corresponding each phase of each sleeve pipe.
Figure 10 is a kind of structural representation of the diagnostic system of electrical equipment fault provided in an embodiment of the present invention, such as Figure 10
Shown, the diagnostic system of the electrical equipment fault includes：Infrared thermal imaging temperature measuring equipment 1001, server 1002 and long-range prison
Control equipment 1003.
Infrared thermal imaging temperature measuring equipment 1001 specifically includes high-speed holder, and the infrared photography on high-speed holder
Machine, infrared thermal imaging temperature measuring equipment 1001 is collected after infrared image, wherein the infrared image includes pcolor picture and temperature
Data image, server 1002 is sent by the infrared image by communication line, wherein the communication line using optical fiber and
Fiber optical transceiver, can be that infrared thermal imaging temperature measuring equipment 1001 sends the infrared image by communication line specifically
To the network switch, the infrared image is transmitted to server 1002 by the network switch, and server 1002 receives described red
After outer image, the selection operation of monitoring personnel is received, is directly surveyed on each sleeve pipe that transformer is determined in infrared image
The setting of warm spot, specifically, for each sleeve pipe of transformer, the top central point of the sleeve pipe and bottom centre's point are constituted
Line segment is set to the linear thermometric position of full section of the sleeve pipe, corresponding with the midpoint of the line segment according to the top central point of the sleeve pipe
Part I sleeve pipe, is defined as the upper semisection of the sleeve pipe；It is corresponding with the midpoint of the line segment according to the bottom centre of sleeve pipe point
Part II sleeve pipe, is defined as the lower semisection of the sleeve pipe, and at least one temperature measuring point is set in the upper semisection of the sleeve pipe, and at this
The lower semisection of sleeve pipe sets at least one temperature measuring point.The quantity of the temperature measuring point set on each sleeve pipe is identical, and different sets
The temperature measuring point being correspondingly arranged on pipe is located at identical thermometric position.
S902：According to the infrared image of the power equipment to be diagnosed received, it is determined that power equipment to be diagnosed is complete
Section linear temperature distribution curve.
It is to each pixel and its corresponding in temperature data image in the infrared image with discrete distribution mode
What temperature value was recorded, then server 1002 is received after the infrared image, passes through the temperature distribution history pre-saved
Algorithm is determined, selects to be located on the linear thermometric position of full section of each sleeve pipe in each pixel of temperature data image
Pixel, it is determined that the corresponding full section linear temperature distribution curve of each sleeve pipe, it is determined that the corresponding full section linear temperature of each sleeve pipe
The temperature value of each temperature measuring point on distribution curve, and each sleeve pipe.
S903：The disposal of gentle filter is carried out to the full section linear temperature distribution curve of power equipment, it is every after being updated
The temperature value of individual temperature measuring point.
Server 1002 is directed to the linear temperature distribution curve of each sleeve pipe, is distributed in the full section linear temperature of the sleeve pipe bent
The middle selection length of line is 5 window the disposal of gentle filter, the temperature value of each temperature measuring point after being updated.
The middle selection length of the full section linear temperature distribution curve in the sleeve pipe is 5 window the disposal of gentle filter,
The process of the temperature value of each temperature measuring point after being updated has been illustrated in the above-described embodiments, in the embodiment of the present invention
In do not repeat.
After the completion of the step, S904 can be carried out or S905 is carried out.
S904：Temperature difference analysis is carried out, judges whether that temperature approach is more than two temperature measuring points of the temperature difference threshold of setting, such as
Fruit is to carry out S907；If not, carrying out S905.
Specially server 1002 judges what is set on the sleeve pipe at least two temperature measuring points set on each sleeve pipe
It is more than two temperature measuring points of the first temperature difference threshold of setting at least two temperature measuring points with the presence or absence of temperature approach.
Server 1002 judges whether to be located on two sleeve pipes for the temperature measuring point set on different sleeve pipes, and temperature
Difference is more than two temperature measuring points of the second temperature difference threshold of setting, if the number of the temperature measuring point pre-set on each sleeve pipe
Amount is identical, and the corresponding temperature measuring point set on different sleeve pipes is located at identical thermometric position, then server 1002 is directed to different sets
The temperature measuring point pre-set on pipe, judges whether to be located at identical thermometric position on two sleeve pipes, and temperature approach is more than and set
Two temperature measuring points of the second fixed temperature difference threshold.
If it is, server 1002 thinks that power equipment to be diagnosed there may be failure.
S905：Algorithm is determined according to the temperature value of each temperature measuring point and default frequency, it is determined that the frequency spectrum of each temperature measuring point
Energy.
The default frequency determines that algorithm is discrete fourier transform algorithm DFT in embodiments of the present invention.
Server 1002 is right according to the temperature value of each temperature measuring point in the full section linear temperature distribution curve of power equipment
It carries out DFT, it is determined that the spectrum energy of each temperature measuring point, specifically, the full section linear temperature distribution curve of the power equipment
Can be the full section linear temperature distribution curve of each sleeve pipe of power equipment or each sleeve pipe including power equipment
The combination full section Linear Temperature of linear temperature distribution curve write music line.
S906：Frequency energy analysis is carried out, judges whether the frequency energy of each temperature measuring point is respectively positioned on the frequency energy of setting
In the range of amount, if not, carrying out S907.
Server 1002 determines corresponding spectrum curve, filtered out in spectrum curve according to the spectrum energy of each temperature measuring point
Fundamental component, i.e. frequency is 0 component, obtains target spectrum curve, judges each temperature measuring point in target spectrum curve
Whether frequency energy is respectively positioned in the range of the frequency energy of setting, if it is not, then in the presence of the frequency energy of at least one temperature measuring point
It is not located in the range of the frequency energy of setting, server 1002 can identify the jump in temperature that there is subrange and saltus step,
Think there may be pyrogenicity failure caused by voltage；If it is, server 1002 thinks that power equipment to be diagnosed is normal not
There is failure.
S907：The diagnostic result of failure is generated, and the diagnostic result of failure is carried in warning information transmission.
Server 1002 is analyzed or/and frequency energy analysis according to the temperature difference, it is determined that the failure for treating diagnosing electric power
Diagnostic result, the diagnostic result of the failure is carried remote supervisory and control(ling) equipment 1003 is sent in warning information.
Specifically, can be that the warning information for carrying faulty diagnostic result is sent to network exchange by server 1002
The warning information is transmitted to remote supervisory and control(ling) equipment 1003 by machine, the network switch.The remote supervisory and control(ling) equipment 1003 can be
Tablet personal computer, PC (PC), notebook computer etc..
Because the corresponding each phase of each sleeve pipe in the embodiment of the present invention for power equipment to be diagnosed is pre-set
The linear thermometric position of full section, the upper semisection at the linear thermometric position of full section of each phase sets at least one temperature measuring point, each phase
Lower semisection sets at least one temperature measuring point, treats the upper semisection at the linear thermometric position of full section of each phase of the power equipment of diagnosis
At least one temperature measuring point, and the judgement of the current temperature value progress temperature approach for temperature measuring point are all provided with lower semisection,
Improve the accuracy of Fault Diagnosis for Electrical Equipment result.
Figure 11 is a kind of diagnostic device schematic diagram of electrical equipment fault provided in an embodiment of the present invention, applied to service
Device, the device includes：
Temperature determination module 1101, for according to the infrared image of power equipment to be diagnosed received and pre-setting
Each first temperature measuring point, it is determined that the temperature value of current each first temperature measuring point, wherein the disconnected power equipment of the follow-up is every
It is previously provided with one phase on the linear thermometric position of full section set in the linear thermometric position of full section, each phase and is provided with least two
Individual first temperature measuring point, at least two first temperature measuring points that are set in each phase, at least one first temperature measuring point is located at should
The upper semisection at the linear thermometric position of full section of phase, at least one first temperature measuring point is located under the linear thermometric position of full section of the phase
Half section；
Temperature difference judge module 1102, for judging whether that temperature approach is more than two first surveys of the temperature difference threshold of setting
Warm spot；If it does, triggering alarm sending module 1103；
Sending module 1103 is alerted, for sending alarm information.
The temperature difference judge module 1102, specifically at least two first thermometrics for being pre-set in each phase
Point, judges to be more than two of the first temperature difference threshold of setting at least two first temperature measuring points in the phase with the presence or absence of temperature approach
First temperature measuring point；If it does, triggering alarm sending module 1103.
The temperature difference judge module 1102, specifically for the first temperature measuring point for being pre-set in different phases, judgement is
It is no to exist in two different phases, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting；If deposited
In triggering alarm sending module 1103.
The temperature difference judge module 1102, specifically for the first temperature measuring point for being pre-set in different phases, judgement is
It is no to there is the identical thermometric position in two different phases, and temperature approach is more than two first of the second temperature difference threshold of setting
Temperature measuring point；If it does, triggering alarm sending module 1103.
Described device also includes：
Temperature update module 1104, for for each phase, according to the infrared image, it is determined that the entire section line of the current phase
The temperature curve at property thermometric position；The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；Pin
To each phase, according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, update each in the phase
The temperature value of first temperature measuring point.
Described device also includes：
Judge module 1105 is determined, for if it is determined that being more than two first of the temperature difference threshold of setting in the absence of temperature approach
Temperature measuring point, is determined according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency
Algorithm, it is determined that the frequency energy and/or the frequency energy of the second temperature measuring point of each first temperature measuring point, wherein the disconnected electricity of the follow-up
At least two second temperature measuring points are previously provided with the fin of power equipment；Judge each first temperature measuring point frequency energy and/
Or second the frequency energy of temperature measuring point whether be respectively positioned in the range of the frequency energy of setting；If not, triggering alarm sending module
1103。
Because each phase in the embodiment of the present invention for power equipment to be diagnosed pre-sets the linear thermometric portion of full section
Position, the upper semisection at the linear thermometric position of full section of each phase sets at least one first temperature measuring point, and the full section of each phase is linearly surveyed
The lower semisection at warm position sets at least one first temperature measuring point, treats the linear thermometric of full section of each phase of the power equipment of diagnosis
The upper semisection and lower semisection at position are all provided with least one first temperature measuring point, and for the current temperature of the first temperature measuring point
Value carries out the judgement of temperature approach, improves the degree of accuracy of Fault Diagnosis for Electrical Equipment result.
For systems/devices embodiment, because it is substantially similar to embodiment of the method, so the comparison of description is simple
Single, the relevent part can refer to the partial explaination of embodiments of method.
It should be understood by those skilled in the art that, embodiments herein can be provided as method, system or computer program
Product.Therefore, the application can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.Moreover, the application can be used in one or more computers for wherein including computer usable program code
The computer program production that usable storage medium is implemented on (including but is not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of product.
The application is the flow with reference to method, equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram
Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real
The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.
These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to
Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Although having been described for the preferred embodiment of the application, those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the application scope.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (13)
1. a kind of diagnostic method of electrical equipment fault, it is characterised in that pre- in each phase of the power equipment to be diagnosed
First it is provided with the linear thermometric position of full section set in the linear thermometric position of full section, each phase and is provided with least two first surveys
Warm spot, at least two first temperature measuring points that are set in each phase, at least one first temperature measuring point is located at the full section of the phase
The upper semisection at linear thermometric position, at least one first temperature measuring point is located at the lower semisection at the linear thermometric position of full section of the phase, should
Method includes：
According to the infrared image of the power equipment to be diagnosed received and each first temperature measuring point pre-set, it is determined that currently
The temperature value of each first temperature measuring point；
Judge whether that temperature approach is more than two the first temperature measuring points of the temperature difference threshold of setting；
If it does, sending alarm information.
2. the method as described in claim 1, it is characterised in that described to judge whether the temperature difference threshold that temperature approach is more than setting
Two the first temperature measuring points of value include：
For at least two first temperature measuring points pre-set in each phase, judge at least two first temperature measuring points in the phase
It is more than two the first temperature measuring points of the first temperature difference threshold of setting with the presence or absence of temperature approach.
3. the method as described in claim 1, it is characterised in that described to judge whether the temperature difference threshold that temperature approach is more than setting
Two the first temperature measuring points of value include：
For the first temperature measuring point pre-set in different phases, judge whether to be located in two different phases, and temperature approach is big
In two the first temperature measuring points of the second temperature difference threshold of setting.
4. the method as described in claim 1, it is characterised in that after the temperature value of current each first temperature measuring point of the determination,
Before two first temperature measuring points for judging whether temperature difference threshold of the temperature approach more than setting, methods described is also wrapped
Include：
For each phase, according to the infrared image, it is determined that the temperature curve at the linear thermometric position of full section of the current phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；
For each phase, according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, the phase is updated
The temperature value of upper each first temperature measuring point.
5. the method as described in claim 1, it is characterised in that pre-set on the fin of the power equipment to be diagnosed
There are at least two second temperature measuring points, two the first temperature measuring points of the temperature difference threshold of setting are more than if there is no temperature approach, it is described
Method also includes：
Determine to calculate according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency
Method, it is determined that the frequency energy and/or the frequency energy of the second temperature measuring point of each first temperature measuring point；
Judge whether the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point are respectively positioned on the frequency of setting
In energy range；
If not, sending a warning message.
6. the method as described in claim any one of 1-5, it is characterised in that the first thermometric pre-set in each phase
The quantity of point is identical, and the temperature measuring point of correspondence first set in different phases is located at identical thermometric position.
7. method as claimed in claim 6, it is characterised in that first temperature measuring point for being pre-set in different phases,
Judge whether to be located in two different phases, and temperature approach is more than two the first temperature measuring point bags of the second temperature difference threshold of setting
Include：
For the first temperature measuring point pre-set in different phases, judge whether to be located at identical thermometric portion in two different phases
Position, and temperature approach is more than two the first temperature measuring points of the second temperature difference threshold of setting.
8. a kind of diagnostic device of electrical equipment fault, it is characterised in that the device includes：
Temperature determination module, for according to the infrared image of power equipment to be diagnosed received and pre-set each the
One temperature measuring point, it is determined that the temperature value of current each first temperature measuring point, wherein pre- in each phase of the disconnected power equipment of the follow-up
First it is provided with the linear thermometric position of full section set in the linear thermometric position of full section, each phase and is provided with least two first surveys
Warm spot, at least two first temperature measuring points that are set in each phase, at least one first temperature measuring point is located at the full section of the phase
The upper semisection at linear thermometric position, at least one first temperature measuring point is located at the lower semisection at the linear thermometric position of full section of the phase；
Temperature difference judge module, for judging whether that temperature approach is more than two the first temperature measuring points of the temperature difference threshold of setting；Such as
Fruit is present, triggering alarm sending module；
Sending module is alerted, for sending alarm information.
9. device as claimed in claim 8, it is characterised in that the temperature difference judge module, specifically for in each phase
At least two first temperature measuring points pre-set, judge big with the presence or absence of temperature approach at least two first temperature measuring points in the phase
In two the first temperature measuring points of the first temperature difference threshold of setting；If it does, triggering alarm sending module.
10. device as claimed in claim 8, it is characterised in that the temperature difference judge module, specifically for in different phases
The first temperature measuring point pre-set, judges whether to be located in two different phases, and temperature approach is more than second temperature difference of setting
Two the first temperature measuring points of threshold value；If it does, triggering alarm sending module.
11. device as claimed in claim 10, it is characterised in that the temperature difference judge module, specifically for for different phases
On the first temperature measuring point for pre-setting, judge whether to be located at identical thermometric position in two different phases, and temperature approach is big
In two the first temperature measuring points of the second temperature difference threshold of setting；If it does, triggering alarm sending module.
12. device as claimed in claim 8, it is characterised in that described device also includes：
Temperature update module, for for each phase, according to the infrared image, it is determined that the linear thermometric portion of full section of the current phase
The temperature curve of position；The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of full section of each phase；For each phase,
According to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter, each first temperature measuring point in the phase is updated
Temperature value.
13. device as claimed in claim 8, it is characterised in that described device also includes：
Determine judge module, for if it is determined that in the absence of temperature approach be more than setting temperature difference threshold two the first temperature measuring points,
Algorithm is determined according to the temperature value of each first temperature measuring point and/or the temperature value of each second temperature measuring point, and default frequency, really
The frequency energy of fixed each first temperature measuring point and/or the frequency energy of the second temperature measuring point, wherein the disconnected power equipment of the follow-up
Fin on be previously provided with least two second temperature measuring points；Judge the frequency energy and/or second of each first temperature measuring point
Whether the frequency energy of temperature measuring point is respectively positioned in the range of the frequency energy of setting；If not, triggering alarm sending module.
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| CN108198171A (en) * | 2017-12-27 | 2018-06-22 | 大连理工大学 | A kind of method of the operating status diagnosis based on server surface Warm status |
| CN109186775A (en) * | 2018-09-07 | 2019-01-11 | 国网江苏省电力有限公司苏州供电分公司 | Thermal imagery monitors system |
| CN109612586A (en) * | 2018-12-17 | 2019-04-12 | 广州供电局有限公司 | Secondary device method for monitoring state based on infrared thermal imaging |
| CN109900366B (en) * | 2019-03-22 | 2021-05-07 | 国网重庆市电力公司电力科学研究院 | Method and device for detecting abnormal temperature point of lightning arrester |
| CN109900366A (en) * | 2019-03-22 | 2019-06-18 | 国网重庆市电力公司电力科学研究院 | A kind of method and device detecting arrester temperature anomaly point |
| CN111735545A (en) * | 2020-08-18 | 2020-10-02 | 四川华东电气集团有限公司 | Transformer substation infrared thermal imaging online monitoring method and system |
| CN111735545B (en) * | 2020-08-18 | 2020-11-13 | 四川华东电气集团有限公司 | Transformer substation infrared thermal imaging online monitoring method and system |
| CN112684232A (en) * | 2021-02-01 | 2021-04-20 | 宁夏隆基宁光仪表股份有限公司 | Intelligent ammeter capable of preventing electricity theft |
| CN112684232B (en) * | 2021-02-01 | 2022-03-25 | 宁夏隆基宁光仪表股份有限公司 | Intelligent ammeter capable of preventing electricity theft |
| CN113687156A (en) * | 2021-08-07 | 2021-11-23 | 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 |
| 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 |
| CN113960112A (en) * | 2021-10-22 | 2022-01-21 | 国网福建省电力有限公司检修分公司 | Power equipment defect judgment method and system |
| CN116106705A (en) * | 2023-04-12 | 2023-05-12 | 中国空气动力研究与发展中心低速空气动力研究所 | Plasma exciter real-time monitoring device and method for unmanned aerial vehicle flight verification |
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