CN107314817B - A kind of diagnostic method and device of electrical equipment fault - Google Patents
A kind of diagnostic method and device of electrical equipment fault Download PDFInfo
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- CN107314817B CN107314817B CN201710447341.7A CN201710447341A CN107314817B CN 107314817 B CN107314817 B CN 107314817B CN 201710447341 A CN201710447341 A CN 201710447341A CN 107314817 B CN107314817 B CN 107314817B
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- G—PHYSICS
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- 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
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Abstract
The invention discloses a kind of diagnostic method of electrical equipment fault and devices, to solve the problems, such as Fault Diagnosis for Electrical Equipment result inaccuracy existing in the prior art.The linear thermometric position of full section is previously provided in each phase of the power equipment to be diagnosed, the full section being arranged in each phase is provided at least two temperature measuring points on linear thermometric position, for at least two temperature measuring points being arranged 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, this method comprises: according to the infrared image of the power equipment to be diagnosed received and pre-set each temperature measuring point, determine the temperature value of current each temperature measuring point；Judge whether there is two temperature measuring points that temperature difference is greater than 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 technical field of electric power more particularly to the diagnostic methods and device of a kind of electrical equipment fault.
Background technique
With the rapid development of economy, to electricity demand be also continuously increased, present people's lives 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.
As soon as temperature is to investigate the important parameter of power equipment safety operation, have to the temperature detection of power equipment urgent
Cutting property.Power equipment in the process of running, inside the equipment or due to external environment etc., it may appear that loop resistance loss increases
Greatly, dielectric loss increases, iron loss increases, voltage's distribiuting exception and Leakage Current increase, oil starvation and other failures etc., and equipment is exhausted
The defects of edge, conductor, can often embody in early period in temperature anomaly method.On the other hand, power equipment structure, material
It can be affected by temperature larger, surface temperature, which is analyzed, 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 known as visible light wave range, wavelength
From 0.75 to 1000 μm of electromagnetic wave is known as infrared band.The shortwave end of infrared band is adjacent with the red light of visible light, long wave
End connects with microwave.Visible optical radiation mainly from hyperthermia radiation source, such as the sun, high-temp combustion gas, scorching hot metal, and
The object of any temperature present in nature, there is infra-red radiation.Infrared thermal imaging thermometry passes through perception infra-red radiation,
Infra-red radiation is changed into temperature value and is widely used in measuring surface of solids temperature, wherein being 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 saves analyzes the electricity
The temperature rise situation of power equipment, if temperature rise situation meets preset failure temperature rise situation, then it is assumed that the power equipment occurs
Failure then sends warning information.Furthermore user can also realize the search of failure power equipment, infrared monitoring by controllable holder
Head automatically track the multiple target points for meeting temperature value set by user or temperature range on screen, using multiple target point as
Multiple temperature measuring points of multiple power equipments, and the temperature value of each target point in multiple 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 practical applications, the surface temperature of power equipment is by many factors such as extraneous natural environment and itself load
It influences, 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 inaccuracy；And set temperature value or temperature range are met by the tracking of infrared monitoring head
Multiple target points, since the external environment of power equipment is complex, infrared monitoring head tracking target point in addition to power equipment,
It is also possible that the sun, light, the automobile of movement or passerby of walking etc., leads to not accurately realize for power equipment temperature
The measurement of degree, so as to cause for the diagnostic result of electrical equipment fault inaccuracy.
Summary of the invention
The present invention provides the diagnostic method and device of a kind of electrical equipment fault, to solve electricity existing in the prior art
Power equipment fault diagnosis result inaccuracy problem.
To solve the above-mentioned problems, the present invention provides a kind of diagnostic methods of electrical equipment fault, described to be diagnosed
The linear thermometric position of full section is previously provided in each phase of power equipment, on the linear thermometric position of full section being arranged in each phase
At least two first temperature measuring points are provided with, at least two first temperature measuring points being arranged 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 comprises:
According to the infrared image of the power equipment to be diagnosed received and pre-set each first temperature measuring point, determine
The temperature value of current each first temperature measuring point；
Judge whether there is two the first temperature measuring points that temperature difference is greater than the temperature difference threshold of setting；
If it does, sending alarm information.
Further, two first temperature measuring point packets for judging whether there is temperature difference and being greater than the temperature difference threshold of setting
It includes:
For at least two first temperature measuring point pre-set in each phase, at least two first thermometrics in the phase are judged
It is greater than two the first temperature measuring points of the first temperature difference threshold of setting in point with the presence or absence of temperature difference.
Further, two first temperature measuring point packets for judging whether there is temperature difference and being greater than the temperature difference threshold of setting
It includes:
For the first temperature measuring point pre-set in different phases, judge whether there is in two different phases, and the temperature difference
Value is greater than two the first temperature measuring points of the second temperature difference threshold of setting.
Further, after the temperature value of current each first temperature measuring point of the determination, the temperature difference is judged whether there is described
Value is greater than before two the first temperature measuring points of the temperature difference threshold of setting, the method also includes:
The temperature curve at the linear thermometric position of full section of the current phase is determined according to the infrared image for each phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of the full section of each phase；
It is updated 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 temperature value of each first temperature measuring point in the phase.
Further, at least two second temperature measuring points are previously provided on the cooling fin of the power equipment to be diagnosed,
It is greater than two the first temperature measuring points of the temperature difference threshold of setting if there is no temperature difference, the method also includes:
It is true according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point
Determine algorithm, determines the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point；
Whether the frequency energy of the frequency energy and/or the second temperature measuring point that judge each first temperature measuring point is respectively positioned on setting
Within the scope of frequency energy；
If not, sending a warning message.
Further, the quantity of pre-set first temperature measuring point is identical in every phase, and be arranged in different phases
Corresponding first temperature measuring point is located at identical thermometric position.
Further, described for pre-set first temperature measuring point in different phases, it judges whether there is positioned at two not
With in phase, and temperature difference is greater than two the first temperature measuring points of the second temperature difference threshold of setting and includes:
For the first temperature measuring point pre-set in different phases, the identical survey in two different phases is judged whether there is
Warm position, and temperature difference is greater than two the first temperature measuring points of the second temperature difference threshold of setting.
The present invention provides a kind of diagnostic device of electrical equipment fault, which includes:
Temperature determination module, for according to the infrared image of power equipment to be diagnosed that receives and pre-set every
A first temperature measuring point determines the temperature value of current each first temperature measuring point, wherein each phase for the power equipment that the follow-up breaks
On be previously provided with the linear thermometric position of full section, at least two are provided on the linear thermometric position of full section being arranged in each phase
One temperature measuring point, at least two first temperature measuring points being arranged 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 are located at the lower half at the linear thermometric position of full section of the phase
Section；
Temperature difference judgment module, two the first thermometrics for being greater than the temperature difference threshold of setting for judging whether there is temperature difference
Point；If it does, triggering alarm sending module；
Sending module is alerted, for sending alarm information.
Further, the temperature difference judgment module is specifically used for in each phase pre-set at least two first
Temperature measuring point judges to be greater than the first temperature difference threshold of setting with the presence or absence of temperature difference at least two first temperature measuring points in the phase
Two the first temperature measuring points；If it does, triggering alarm sending module.
Further, the temperature difference judgment module is specifically used for sentencing for pre-set first temperature measuring point in different phases
Disconnected whether there is is located in two different phases, and temperature difference is greater than two the first temperature measuring points of the second temperature difference threshold of setting；Such as
Fruit exists, triggering alarm sending module.
Further, the temperature difference judgment module is specifically used for sentencing for pre-set first temperature measuring point in different phases
Disconnected whether there is is located at identical thermometric position in two different phases, and temperature difference is greater than two of the second temperature difference threshold of setting
First temperature measuring point；If it does, triggering alarm sending module.
Further, described device further include:
Temperature update module, according to the infrared image, determines that the full section of the current phase is linearly surveyed for being directed to each phase
The temperature curve at warm position；The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of the full section of each phase；For every
One phase updates each first in the 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 temperature value of temperature measuring point.
Further, described device further include:
Judgment module is determined, for if it is determined that there is no two the first thermometrics that temperature difference is greater than the temperature difference threshold of setting
Point is determined according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point and is calculated
Method determines the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point, wherein the electric power that the follow-up is disconnected
At least two second temperature measuring points are previously provided on the cooling 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 within the scope of the frequency energy of setting；If not, triggering alarm sending module.
The present 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 the linear thermometric position of full section in one phase, is provided at least two on the linear thermometric position of full section being arranged in each phase
A first temperature measuring point, at least two first temperature measuring points being arranged in each phase, at least one first temperature measuring point is located at should
The upper semisection at the linear thermometric position of the full section of phase, at least one first temperature measuring point are located under the linear thermometric position of full section of the phase
Half section, this method comprises: being surveyed according to the infrared image of the power equipment to be diagnosed received and pre-set each first
Warm spot determines the temperature value of current each first temperature measuring point；Judge whether there is temperature difference is greater than the temperature difference threshold of setting two
A 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 set, at least one first temperature measuring point is arranged in the upper semisection at the linear thermometric position of the full section of each phase, often
At least one first temperature measuring point is arranged in the lower semisection at the linear thermometric position of the full section of one phase, treats each of the power equipment of diagnosis
The upper semisection and lower semisection at the linear thermometric position of the full section of phase are all provided at least one first temperature measuring point, and survey for first
The current temperature value of warm spot carries out the judgement of temperature difference, improves the accuracy of Fault Diagnosis for Electrical Equipment result.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these 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 provides；
Fig. 2A is a kind of infrared image for power equipment that the embodiment of the present invention 1 provides；
Fig. 2 B is the schematic diagram of the linear temperature distribution curve for the power equipment that the embodiment of the present invention 1 provides；
Fig. 3 is a kind of infrared image for power equipment to be diagnosed that the embodiment of the present invention 3 provides；
Fig. 4 is a kind of three-phase linear temperature distributing curve diagram for transformer that the embodiment of the present invention 3 provides；
Fig. 5 A is a kind of schematic diagram of the linear temperature distribution curve for upper section casing that the embodiment of the present invention 5 provides；
Fig. 5 B is a kind of target spectrum curve for upper section casing that the embodiment of the present invention 5 provides；
Fig. 6 is a kind of infrared image for radiating fin of transformer that the embodiment of the present invention 5 provides；
Fig. 7 A is a kind of schematic diagram of the linear temperature distribution curve for radiating fin of transformer that the embodiment of the present invention 5 provides；
Fig. 7 B is a kind of target spectrum curve for radiating fin of transformer that the embodiment of the present invention 5 provides；
Fig. 8 A is a kind of schematic diagram of the linear temperature distribution curve for power equipment that the embodiment of the present invention 5 provides；
Fig. 8 B is a kind of target spectrum curve for power equipment that the embodiment of the present invention 5 provides；
Fig. 9 is a kind of diagnostic method flow chart for electrical equipment fault that the embodiment of the present invention 6 provides；
Figure 10 is a kind of structural schematic diagram of the diagnostic system for electrical equipment fault that the embodiment of the present invention 6 provides；
A kind of Figure 11 diagnostic device schematic diagram of electrical equipment fault provided in an embodiment of the present invention.
Specific embodiment
In order to improve the accuracy of Fault Diagnosis for Electrical Equipment result, the embodiment of the invention provides a kind of power equipment events
The diagnostic method and device of barrier.
To make the objectives, technical solutions, and advantages of the present invention clearer, make below in conjunction with the attached drawing present invention into one
Step ground detailed description, it is clear that described embodiment is only a part of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
Every other embodiment, shall fall within the protection scope of the present 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, which includes
Following steps:
S101: according to the infrared image of the power equipment to be diagnosed received and pre-set each first thermometric
Point determines 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 for receiving power equipment to be diagnosed is preset according to the infrared image, and for power equipment to be diagnosed
Each of the first temperature measuring point, determine the temperature value of current each first temperature measuring point.
Power equipment to be diagnosed described in the embodiment of the present invention is primarily referred to as converting station electric power primary equipment.The follow-up
The linear thermometric position of full section is previously provided in each phase of disconnected power equipment, the linear thermometric portion of full section being arranged in each phase
At least two first temperature measuring points are provided on position, at least two first temperature measuring points being arranged 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, at least one the first temperature measuring point is located at the full section of the phase
The lower semisection at linear thermometric position.
For power equipments such as such as transformers, the casing of transformer corresponds to three-phase, wherein each casing corresponds to each phase, institute
The linear thermometric position of full section is stated to be set in advance in the corresponding each phase of each casing；For power equipments such as such as arresters, keep away
The porcelain vase of thunder device corresponds to three-phase, wherein each porcelain vase corresponds to each phase, the linear thermometric position of full section is set in advance in each
In the corresponding each phase of porcelain vase.
The infrared image for the power equipment wait diagnose that server receives can be by sending out after the acquisition of infrared collecting equipment
It send, the infrared image can be video image, and 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 relationship, wherein described infrared
Acquiring equipment 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.After server receives infrared image, wrapped according in infrared image
The each pixel in pcolor picture included corresponding each pixel in temperature data image, can determine in pcolor picture
The corresponding temperature data of each pixel, to make server according to infrared image and pre-set each first thermometric
Point determines the temperature value of current each first temperature measuring point.
The process for presetting each first temperature measuring point for power equipment to be diagnosed includes: to set in electric power to be diagnosed
A thermometric line is provided in standby each phase, using the corresponding position of the thermometric line in each phase as the linear thermometric portion of full section
Position is provided at least two first temperature measuring points on the linear thermometric position of full section being arranged in each phase, for being arranged in each phase
At least two first temperature measuring points in, at least one first temperature measuring point is located at the upper semisection at the linear thermometric position of full section of the phase,
At least one first temperature measuring point is located at the lower semisection at the linear thermometric position of full section of the phase.
Specifically can be, on the linear thermometric position of full section of each phase be provided at least two first temperature measuring points,
The mark of each first temperature measuring point can be specifically set in each phase, be marked for example, by using certain mode, by adopting
Natural light image and the infrared image for collecting the power equipment can determine and the first temperature measuring point each of are marked 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
The first temperature measuring point each of is arranged on the linear thermometric position of full section of each phase in standby natural light image and infrared image, record
Coordinate in natural light image determines each first temperature measuring point corresponding pixel in infrared image, may thereby determine that
The corresponding temperature value of each first temperature measuring point.
Alternatively, being also possible to after collecting the infrared image of power equipment, 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.
The corresponding each phase of casing or porcelain vase for 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 as thermometric line, using the thermometric line of the phase as the linear thermometric position of the full section of the phase, according to this
The top central point of phase first part corresponding with the midpoint of the line segment is determined as the upper half at the linear thermometric position of full section of the phase
Section；According to the bottom centre of phase point second part corresponding with the midpoint of the line segment, it is determined as the linear thermometric of full section of the phase
At least one temperature measuring point is arranged in the lower semisection at position, the upper semisection at the linear thermometric position of the full section of the phase, and in the phase
At least one temperature measuring point is arranged in the lower semisection at the linear thermometric position of full section.
In addition it when temperature measuring point is arranged, can be configured according to the easy trouble location of diagnosing electric power, such as follow-up
When disconnected power equipment is transformer, since the failures such as oil starvation easily occurring at transformer line casing, it is possible to be surveyed in setting
When warm spot, temperature measuring point is set at transformer line casing and is diagnosed.In diagnosis of the reality to electrical equipment fault, it is
The accuracy for improving diagnostic result, can be the linear thermometric position of full section of each phase of power equipment upper semisection and under
Half section is respectively set multiple temperature measuring points, and in each phase pre-set temperature measuring point quantity it is identical, and in different phases
The correspondence 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: two the first temperature measuring points that temperature difference is greater than the temperature difference threshold of setting are judged whether there is；If it does, into
Row S103.
For power equipment, the failure that rheology generates is typically embodied by: the temperature value of the trouble location of power equipment
Two for there is more apparent difference with the temperature value of normal portions, therefore being greater than temperature difference threshold by judging whether there is temperature difference
A first temperature measuring point, it can be determined that whether there may be failures for power equipment.
The temperature difference threshold saves 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, be can be according to " 664 2008 charging equipment of DT/L is red
Outer diagnostic application specification " come what is determined.
Server can be according to each pixel and its corresponding temperature value in the temperature data image, according to preparatory
The temperature distribution history of preservation determines algorithm, determines that the linear temperature distribution curve of power equipment to be diagnosed, Fig. 2A are this hair
A kind of infrared image for power equipment that bright embodiment provides, the infrared image include pcolor picture and temperature data image,
Server can determine each corresponding linear thermometric position of full section of power equipment according to the pcolor picture, each phase
Full section is provided with the first temperature measuring point on linear thermometric position, is with discrete distribution in the temperature data image in the infrared image
Mode records each pixel and its corresponding temperature value, and Fig. 2 B is 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 power equipment shown in Fig. 2 B are A institutes according to fig. 2
What the infrared image shown determined, abscissa is that each of linear thermometric position of full section first is surveyed in the linear temperature distribution curve
Warm spot, ordinate are the temperature value of the first temperature measuring point of each of the linear thermometric position of full section, and server passes through the temperature pre-saved
Degree distribution curve determines algorithm, and the full section for being located at the power equipment in each pixel of temperature data image is selected linearly to survey
Pixel on warm position, so that it is determined that the temperature value of the first temperature measuring point of each of 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 algorithm are as follows:
M is temperature data figure
The abscissa of pixel as in, value range are 0~M, and wherein the value of M is according to pixel lateral in temperature data image
Number determines that n is the ordinate of pixel in temperature data image, and value range is 0~N, and wherein the value of N is according to temperature data
Longitudinal pixel number determines in image, XaFor the abscissa of the linear thermometric position corresponding sequence of full section of each phase, Ya
For the ordinate of the linear thermometric position corresponding sequence of full section of each phase, calculated if determined according to above-mentioned temperature distribution history
The value for the A that method determines 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 should
The corresponding temperature value P of point (m, n)mnThe first temperature measuring point of correspondence (X as the linear thermometric position of full section in each phasea,Ya)
Temperature value.
The server passes through the temperature distribution history pre-saved and determines algorithm, 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 corresponding linear temperature distribution curve in the linear thermometric position of temperature value and full section of each first temperature measuring point belongs to the prior art,
The process is not repeated them here in embodiments of the present invention.
S103: alarm information is sent.
If server is directed to all temperature measuring points, two surveys for being greater than the temperature difference threshold of setting there are temperature difference are judged
Warm spot, server think power equipment currently to be diagnosed there are jump in temperature, power equipment to be diagnosed there may be failure,
It sends a warning message.
The specifying information of temperature measuring point temperature anomaly can be carried and be sent in warning information by server, can also directly be sent out
Warning information is sent, determines the specific letter of temperature measuring point temperature anomaly after so that monitoring personnel is received 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 by server, be also possible to that letter will be alerted
Breath is sent to hand-held monitoring equipment of monitoring personnel etc..
If server is directed to all temperature measuring points, two that are greater than the temperature difference threshold of setting there is no temperature difference are judged
Temperature measuring point, server think that power equipment currently to be diagnosed is normal, do not send a warning message.
Each phase due to being directed to power equipment to be diagnosed in the embodiment of the present invention presets the linear thermometric portion of full section
At least one temperature measuring point, the linear thermometric portion of the full section of each phase is arranged in position, the upper semisection at the linear thermometric position of the full section of each phase
At least one temperature measuring point is arranged in the lower semisection of position, treats the upper of the linear thermometric position of full section of each phase of the power equipment of diagnosis
Half section and lower semisection are all provided at least one temperature measuring point, and carry out sentencing for temperature difference 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 increase the accuracy of Fault Diagnosis for Electrical Equipment result, on the basis of the above embodiments, this hair
In bright embodiment, two first temperature measuring points for judging whether there is the temperature difference threshold that temperature difference is greater than setting include:
For at least two first temperature measuring point pre-set in each phase, at least two first thermometrics in the phase are judged
It is greater than two the first temperature measuring points of the first temperature difference threshold of setting in point with the presence or absence of temperature difference.
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
To characterize the temperature value of the first temperature measuring point of each phase, so sentencing at least two first temperature measuring points being arranged in each phase
Two the first temperature measuring points of disconnected the first temperature difference threshold for being greater than setting with the presence or absence of temperature difference can carry out the temperature difference point to each phase
Analysis.
Server is when judging whether there is two the first temperature measuring points of the first temperature difference threshold that temperature difference is greater than setting, no
It can only be judged for any two points in each first temperature measuring point, 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
A single-phase with the presence or absence of failure, the diagnosis for electrical equipment fault is more comprehensive, further improves electrical equipment fault and examines
The accuracy of disconnected result.
When the first temperature measuring point is arranged on the linear thermometric position of full section of each phase, as much as possible and in each casing
Upper semisection and lower semisection be all configured, with as much as possible include each phase whole positions, can to each phase carry out temperature
Difference analysis, further improves the accuracy of Fault Diagnosis for Electrical Equipment result.
For each phase, the temperature difference of the first temperature measuring point of any two in the phase is calculated, it can be according to any two first
Whether the temperature difference of temperature measuring point is greater 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 improves diagnosis efficiency, can be temperature in the temperature value for determining the first temperature measuring point of each of the phase for each phase most
Big value and temperature minimum value, judge whether the temperature difference of the temperature maximum and temperature minimum value is greater than the first temperature difference threshold of setting
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, and it is bent to determine that the linear temperature of each phase of power equipment to be diagnosed is distributed
Line.
Since server is judging whether there is two of temperature difference greater than the temperature difference threshold set in the embodiment of the present invention
When the first temperature measuring point, it can not only be judged for any two points in each first temperature measuring point, can also be for each
Phase judges each phase with the presence or absence of failure, and the diagnosis for electrical equipment fault is more comprehensive, further improves power equipment
The accuracy of fault diagnosis result.
Embodiment 3:
In order to further increase 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 there is the temperature difference threshold that temperature difference is greater than setting include:
For the first temperature measuring point pre-set in different phases, judge whether there is in two different phases, and the temperature difference
Value is greater than two the first temperature measuring points of the second temperature difference threshold of setting.
It is converting station electric power primary equipment for power equipment to be diagnosed, is located at two in two different phases the
The temperature difference of one temperature measuring point can characterize the corresponding alternate temperature difference of two differences, so by being located at two different phases
On the first temperature measuring point in, judge whether there is temperature difference be greater than setting temperature difference threshold two the first temperature measuring points, Ke Yizhun
Temperature difference analysis really is carried out to two out of phase alternate temperature difference.
Specifically, for corresponding first temperature difference threshold of temperature difference between each phase different parts, with for two not
With corresponding second temperature difference threshold of the alternate temperature difference of phase can with it is identical can be different, first temperature difference threshold and two temperature difference
Whether threshold value is identical to can be according to " 664 2008 charging equipment infrared diagnostics of DT/L application specification " come what is determined.
When carrying out temperature difference analysis to two out of phase alternate temperature difference, it can be server and identify two difference Xiang Zhong
First temperature maximum of one phase and second temperature maximum value in the first temperature minimum value and the second phase and second temperature are most
Small value, the first temperature difference and/or the first temperature minimum value and the second temperature to the first temperature maximum and second temperature minimum value
Second temperature difference of degree maximum value judged, is also possible to server and is identified each corresponding each temperature in two different phases
Maximum value is spent, the temperature difference of corresponding two temperature maximums of two differences is judged.
Preferably, in order to further increase the accuracy of diagnostic result, pre-set first thermometric in each phase
The quantity of point is identical, and the first temperature measuring point of correspondence being arranged in different phases is located at identical thermometric position.
It is described to be judged whether there is on two casings for pre-set first temperature measuring point in different phases, and temperature
Two the first temperature measuring points of temperature difference threshold that difference is greater than setting include:
For the first temperature measuring point pre-set on different casings, judge whether there is identical in two different phases
Thermometric position, and temperature difference is greater 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 difference is greater than the temperature difference threshold of setting, sets if the corresponding temperature difference of temperature value of the first temperature measuring point of every two 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 that be located at identical thermometric position in two different phases be specifically two entire section lines being located in two different phases
Two the first temperature measuring points on property thermometric position, in two corresponding out of phase tops of the first temperature measuring point of two of them
Heart point is apart from identical.
It is super according to " 664 2008 charging equipment infrared diagnostics of DT/L application specification " two corresponding alternate temperature difference of difference
2 degrees Celsius to 3 degrees Celsius are crossed, monitoring personnel is needed to carry out respective handling, it is possible to which the corresponding temperature difference of the alternate temperature difference is arranged
It is 2 degrees Celsius.
Server can be according to each pixel in the temperature data image in every two difference phase and its corresponding
Temperature value determines algorithm according to the temperature distribution history pre-saved, determines that power equipment every two to be diagnosed is out of phase
Linear temperature distribution curve, preferably, if in the infrared image including the three-phase of power equipment to be diagnosed, it can be true
Determine the three-phase linear temperature distribution history of power equipment to be diagnosed, includes each phase in the three-phase linear temperature distribution history
Linear temperature distribution curve, carry out temperature to facilitate and check.
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, needle
L101, L102, L103, every phase are from left to right followed successively by the linear thermometric position of full section of the three-phase setting of transformer bushing
The linear thermometric position of full section temperature data information, be to be determined according to the temperature data image in infrared image, 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 horizontal seat
It is designated as the first temperature measuring point of each of the linear thermometric position of full section, ordinate is the first temperature measuring point of each of the linear thermometric position of full section
Temperature value.Server can ground for every 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, judgement is located at two out of phase identical thermometrics
Whether the temperature difference between the first temperature measuring point of every two on position is greater than the second temperature difference threshold of setting, to judge transformer
Whether there may be failures for entrance bushing.Server is for being located in L101, L102, L103 corresponding each the on sustained height
One temperature measuring point judges that L101 is located on two out of phase identical thermometric positions corresponding two first and surveys with existing on L103
The temperature difference of warm spot is greater than the second temperature difference threshold of setting, and there are two out of phase identical thermometric portions on L102 and L103
The temperature difference of corresponding two the first temperature measuring points is greater than the second temperature difference threshold of setting on position.
The temperature of first temperature measuring point of the temperature value and L103 of the first temperature measuring point of the L101 on identical thermometric position
The temperature difference between the temperature value of first temperature measuring point of the temperature value and L103 of the first temperature measuring point of the temperature difference and L102 between angle value
The threshold value both greater than set, then server sends a warning message to remote supervisory and control(ling) equipment, and 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 it is corresponding to be below L103 for the corresponding upper semisection temperature of L101 and L102 out
Upper semisection temperature, and the corresponding upper semisection temperature of L103 is located in preset temperature normal range (NR), therefore can accurately judge
The trouble location of transformer bushing is the corresponding upper semisection of L101 and L102, further determines that failure cause is transformer
Entrance bushing L101 and L102 oil starvation.
Since server is judging whether there is two of temperature difference greater than the temperature difference threshold set in the embodiment of the present invention
When the first temperature measuring point, it can not only be judged for any two points in each temperature measuring point, can also be for every two not
With the corresponding alternate temperature difference, judge that every two is different mutually with the presence or absence of failure, the diagnosis for electrical equipment fault is more complete
Face further improves 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 increased
As a result accuracy, on the basis of the various embodiments described above, in the embodiment of the present invention, current each first temperature measuring point of the determination
Temperature value after, it is described judge whether there is temperature difference be greater than setting temperature difference threshold two the first temperature measuring points before, institute
State method further include:
The temperature curve at the linear thermometric position of full section of the current phase is determined according to the infrared image for each phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of the full section of each phase；
It is updated 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 temperature value of each first temperature measuring point on the casing.
According to infrared image, the temperature of each temperature measuring point determined may be led server 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 increases the accuracy of Fault Diagnosis for Electrical Equipment result.
Signified the disposal of gentle filter method can be quasi- for mobile shifting method or least square curve in the embodiment of the present invention
It is the methods of legal, as long as the common the disposal of gentle filter method of those skilled in the art or the method for same effect can be reached
?.
The temperature curve at the linear thermometric position of the full section of each phase can be server according to infrared image, and in advance
The temperature distribution history of preservation determines algorithm, the linear temperature distribution curve of each phase determined.
For example, in embodiments of the present invention, the disposal of gentle filter method are as follows: 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
Set the temperature value of the i-th-v temperature measuring points of the preceding v position of i, xi+vFor the i-th+v thermometrics of the rear v position of center position i
The corresponding value of point, wherein the value of v is m/2, and m is the filter point total length of the bushing temperature curve, that is, shares m thermometric
Point, i.e. set { xi-v,...xi,...xi+vBe each temperature spot in m temperature measuring point temperature value, 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, using the temperature value as yiIt filters defeated
Out, m is odd number, then the center that this m point determines is i, and the value of v is (m-1)/2.
Since 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 processing, is filtered 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 increases the accuracy of Fault Diagnosis for Electrical Equipment result.
Embodiment 5:
In order to further increase the 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 on the cooling fin of the power equipment to be diagnosed, if
Two temperature measuring points there is no temperature difference greater than the temperature difference threshold of setting, the method also includes:
It is true according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point
Determine algorithm, determines the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point；
Whether the frequency energy of the frequency energy and/or the second temperature measuring point that judge each first temperature measuring point is respectively positioned on setting
Within the scope of frequency energy；
If not, sending a warning message.
Due to the corresponding temperature difference of temperature value mainly by judging two the first temperature measuring points of the various embodiments described above judgement
Value, and for the failure that the voltage pyrogenicity type of power equipment generates, the temperature difference being calculated is not it is obvious that namely existing
The case where corresponding temperature difference of the temperature value of two the first temperature measuring points is no more than the temperature difference threshold set, 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 be further improved electrical equipment fault
The accuracy of diagnostic result, wherein being previously provided at least two second thermometrics on the cooling fin for the power equipment that the follow-up breaks
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 can be the first frequency for judging whether the frequency energy of each first temperature measuring point is respectively positioned on setting within the scope of fixed frequency energy
In energy range, the second frequency energy range for judging whether the frequency energy of each second temperature measuring point is respectively positioned on setting can be
It is interior, it is also possible to judge whether the frequency energy of the frequency energy of each first temperature measuring point and each second temperature measuring point is respectively positioned on and sets
Within the scope of fixed third frequency energy, the first frequency energy range, the second frequency energy range and third frequency
Rate energy range can all the same, equal different or part it is identical.
It is described to send a warning message, it can be and judge that at least one first temperature measuring point is not located in first frequency energy range
It sends, can be at least one each second temperature measuring point and be not located at transmission in second frequency energy range, be also possible to sentence
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 third of setting
It is sent within the scope 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 within the scope of the frequency energy of setting, and are higher than the frequency
Energy range, then the frequency energy of the temperature measuring point belongs 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 within the scope of the frequency energy of setting, and is lower than the frequency energy range, 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 range can be
It is 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.
For power equipment voltage pyrogenicity type generate failure, if each of in its each phase the first temperature measuring point temperature
There are any steps variations or part to jump in the thermal characteristics distribution that the temperature value of angle value and/or each second temperature measuring point determines
After determining that algorithm is handled by frequency, inherently there is high fdrequency component in transition, and then can determine that power equipment may
There are the failures that buckling generates, and 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 that algorithm includes but is not limited to discrete fourier transform algorithm.
In embodiments of the present invention, the discrete fourier transform algorithm is speciallyWhereinX (n) is that the temperature of each casing is bent
Line, the value of N are the quantity of temperature measuring point in the temperature curve of each casing.
Further, in order to accurately analyze not be located at setting frequency energy range frequency energy, the temperature of each phase
The second temperature measuring point each of each of write music on line on the temperature curve of the first temperature measuring point or/and cooling fin by direct computation of DFT
After leaf transformation algorithm, the frequency spectrum of the second temperature measuring point each of each of is obtained in each phase on the first temperature measuring point or/and cooling fin,
After filtering out the component that fundamental component i.e. frequency is 0, high-frequency energy can accurately analyze.
Fig. 5 A is a kind of schematic diagram of the linear temperature distribution curve of upper section casing provided in an embodiment of the present invention, such as Fig. 5 A
Shown in upper section casing linear temperature distribution curve, for power equipment to be diagnosed each of, upper to save casing corresponding each
The temperature curve of phase, each the temperature curve of the corresponding each phase of upper section casing is each upper section casing in the embodiment of the present invention
Linear temperature distribution curve, according to the linear temperature scatter chart of section casing on this, to the linear temperature point of section casing 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 the corresponding spectrum curve of the first temperature measuring point of each of section casing on this, filter out the fundamental frequency in the spectrum curve
The component that component, i.e. frequency are 0, obtains the target spectrum curve of upper section casing as shown in Figure 5 B, server can identify
There are the jump in temperature of subrange and jump, the part as described in Fig. 5 B, it is believed that there may be pyrogenicity failure caused by voltage, hairs
Warning information is sent, monitoring personnel can determine that there are certain energy according to the warning information and target spectrum curve received
The low frequency energy information and high-frequency energy information of non-fundamental frequency, determine the abort situation of power equipment.
For the power equipment wait diagnose for when cooling fin, Fig. 6 is a kind of change provided in an embodiment of the present invention on transformer
The infrared image of depressor cooling fin is provided with multiple second temperature measuring points on radiating fin of transformer, as shown in fig. 6, multiple
Two temperature measuring points constitute the corresponding linear thermometric position of full section of cooling fin, as shown in L104 in Fig. 6.Fig. 7 A is according to shown in fig. 6
The linear temperature distribution curve schematic diagram that infrared image obtains, 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 the second temperature measuring point of each of the radiating fin of transformer, filters out the frequency spectrum
The component that fundamental component in curve, i.e. frequency are 0, obtains the target spectrum curve of radiating fin of transformer as shown in Figure 7 B.
Server can identify that there are the jump in temperature of subrange and jump, parts as shown in Figure 7 B, it is believed that there may be voltages
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 apparent low frequency energy information and stronger high-frequency energy information, determine the abort situation of power equipment.
Fig. 8 A is 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
The component that fundamental component, i.e. frequency are 0, obtains the target spectrum curve of power equipment as shown in Figure 8 B, server can recognize
There is no the frequency energy for the frequency energy range for not being located at setting, it is believed that power equipment is normal, does not send a warning message.
The failure that buckling due to being directed to power equipment that may be present in the embodiment of the present invention generates, to two temperature measuring points
Temperature value respective frequencies energy judged, further increase the accuracy of Fault Diagnosis for Electrical Equipment result.
Embodiment 6:
On the basis of the various embodiments described above, the present invention is illustrated above-described embodiment with a specific embodiment,
Fig. 9 is a kind of diagnostic method flow chart of electrical equipment fault provided in an embodiment of the present invention.
S901: obtaining the infrared image of power equipment, according to selection, the linear thermometric position of the full section being arranged in each phase,
And at least two temperature measuring points are preset on the linear thermometric position of full section being arranged in each phase.
Power equipment to be diagnosed is transformer in the embodiment of the present invention, then the casing of transformer corresponds to three-phase, wherein often
A casing corresponds to each phase, and the linear thermometric position of full section is set in advance in the corresponding each phase of each casing.
Figure 10 is a kind of structural schematic diagram 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 being mounted on high-speed holder
Machine, after infrared thermal imaging temperature measuring equipment 1001 collects infrared image, wherein the infrared image includes pcolor picture and temperature
The infrared image is sent server 1002 by communication line by data image, wherein the communication line using optical fiber and
Fiber optical transceiver specifically can be infrared thermal imaging temperature measuring equipment 1001 and send the infrared image by communication line
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, determines in infrared image and is directly surveyed on each casing of transformer
Specifically for each casing of transformer, the top central point of the casing and bottom centre's point are constituted for the setting of warm spot
Line segment is set as the linear thermometric position of full section of the casing, corresponding with the midpoint of the line segment according to the top central point of the casing
First part's casing is determined as the upper semisection of the casing；It is corresponding with the midpoint of the line segment according to the bottom centre of casing point
Second part casing is determined as the lower semisection of the casing, at least one temperature measuring point is arranged in the upper semisection of the casing, and at this
At least one temperature measuring point is arranged in the lower semisection of casing.The quantity for the temperature measuring point being arranged on each casing 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, the complete of power equipment to be diagnosed is determined
Section linear temperature distribution curve.
It is with discrete distribution mode in temperature data image in the infrared image to each pixel and its corresponding
What temperature value was recorded, then after server 1002 receives the infrared image, pass through the temperature distribution history pre-saved
It determines algorithm, selects to be located in each pixel of temperature data image on the linear thermometric position of full section of each casing
Pixel determines the corresponding full section linear temperature distribution curve of each casing, determines the corresponding full section linear temperature of each casing
The temperature value of each temperature measuring point on distribution curve and each casing.
S903: carrying out the disposal of gentle filter to the full section linear temperature distribution curve of power equipment, obtains updated every
The temperature value of a temperature measuring point.
Server 1002 is directed to the linear temperature distribution curve of each casing, is distributed in the full section linear temperature of the casing bent
The middle of line selects length for 5 window the disposal of gentle filter, obtains the temperature value of updated each temperature measuring point.
The full section linear temperature distribution curve in the casing it is middle select length for 5 window the disposal of gentle filter,
The process for obtaining the temperature value of updated each temperature measuring point has been illustrated in the above-described embodiments, in the embodiment of the present invention
In do not repeat them here.
After the completion of the step, S904 can be carried out, is also possible to carry out S905.
S904: carrying out temperature difference analysis, judges whether there is two temperature measuring points that temperature difference is greater than the temperature difference threshold of setting, such as
Fruit is to carry out S907；If not, carrying out S905.
Specially server 1002 judges to be arranged on the casing at least two temperature measuring points being arranged on each casing
It is greater 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 difference.
Server 1002 judges whether there is on two casings for the temperature measuring point being arranged on different casings, and temperature
Difference be greater than setting the second temperature difference threshold two temperature measuring points, if on each casing pre-set temperature measuring point number
Measure identical, and the correspondence temperature measuring point being arranged on different casing is located at identical thermometric position, then server 1002 is for different sets
Pre-set temperature measuring point on pipe, judges whether there is the identical thermometric position on two casings, and temperature difference is greater than and sets
Two temperature measuring points of the second fixed temperature difference threshold.
If so, server 1002 thinks power equipment to be diagnosed, there may be failures.
S905: algorithm is determined according to the temperature value of each temperature measuring point and preset frequency, determines the frequency spectrum of each temperature measuring point
Energy.
The preset 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, determines the spectrum energy of each temperature measuring point, specifically, the full section linear temperature distribution curve of the power equipment
The full section linear temperature distribution curve that can be each casing of power equipment, be also possible to include power equipment each casing
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
It measures in range, if not, carrying out S907.
Server 1002 determines corresponding spectrum curve, filters out in spectrum curve according to the spectrum energy of each temperature measuring point
Fundamental component, i.e., frequency be 0 component, obtain target spectrum curve, judge each temperature measuring point in target spectrum curve
Whether frequency energy is respectively positioned within the scope of the frequency energy of setting, if it is not, then there are the frequency energies of at least one temperature measuring point
It is not located within the scope of the frequency energy of setting, server 1002 can be identified there are the jump in temperature of subrange and jump,
Think that there may be pyrogenicity failures caused by voltage；If it is, server 1002 thinks power equipment to be diagnosed normally not
There are failures.
S907: the diagnostic result of failure is generated, and the diagnostic result of failure is carried and is sent in warning information.
Server 1002 is analyzed according to the temperature difference or/and frequency energy analysis, determines for the failure to diagnosing electric power
Diagnostic result, the carrying of the diagnostic result of the failure is sent to remote supervisory and control(ling) equipment 1003 in warning information.
Specifically, it can be server 1002 and the warning information for carrying faulty diagnostic result be sent to network exchange
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 computer, PC (PC), laptop etc..
The corresponding each phase of each casing due to being directed to power equipment to be diagnosed in the embodiment of the present invention is preset
At least one temperature measuring point is arranged in the upper semisection at the linear thermometric position of full section, the linear thermometric position of the full section of each phase, each phase
At least one temperature measuring point is arranged in lower semisection, treats the upper semisection at the linear thermometric position of full section of each phase of the power equipment of diagnosis
It is all provided at least one temperature measuring point with lower semisection, and carries out the judgement of temperature difference for the current temperature value of temperature measuring point,
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, is applied to service
Device, the device include:
Temperature determination module 1101, for according to the infrared image of power equipment to be diagnosed received and presetting
Each of the first temperature measuring point, the temperature value of current each first temperature measuring point is determined, wherein the disconnected power equipment of the follow-up is every
It is previously provided with the linear thermometric position of full section in one phase, is provided at least two on the linear thermometric position of full section being arranged in each phase
A first temperature measuring point, at least two first temperature measuring points being arranged in each phase, at least one first temperature measuring point is located at should
The upper semisection at the linear thermometric position of the full section of phase, at least one first temperature measuring point are located under the linear thermometric position of full section of the phase
Half section；
Temperature difference judgment module 1102, two first surveys for being greater than the temperature difference threshold of setting for judging whether there is temperature difference
Warm spot；If it does, triggering alarm sending module 1103；
Sending module 1103 is alerted, for sending alarm information.
The temperature difference judgment module 1102 is specifically used for for pre-set at least two first thermometric in each phase
Point judges two that are greater than the first temperature difference threshold of setting at least two first temperature measuring points in the phase with the presence or absence of temperature difference
First temperature measuring point；If it does, triggering alarm sending module 1103.
The temperature difference judgment module 1102 is specifically used for for pre-set first temperature measuring point in different phases, and judgement is
It is no to exist in two different phases, and temperature difference is greater 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 judgment module 1102 is specifically used for for pre-set first temperature measuring point in different phases, and judgement is
It is no to there is the identical thermometric position in two different phases, and temperature difference is greater than two first of the second temperature difference threshold of setting
Temperature measuring point；If it does, triggering alarm sending module 1103.
Described device further include:
Temperature update module 1104, according to the infrared image, determines the entire section line of the current phase for being directed to each 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 the full section of each phase；Needle
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 further include:
Judgment module 1105 is determined, for if it is determined that there is no two first that temperature difference is greater than the temperature difference threshold of setting
Temperature measuring point is determined according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point
Algorithm determines the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point, wherein the electricity that the follow-up is disconnected
At least two second temperature measuring points are previously provided on the cooling 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 within the scope of the frequency energy of setting；If not, triggering alarm sending module
1103。
Each phase due to being directed to power equipment to be diagnosed in the embodiment of the present invention presets the linear thermometric portion of full section
At least one first temperature measuring point is arranged in position, the upper semisection at the linear thermometric position of the full section of each phase, and the full section of each phase is linearly surveyed
At least one first temperature measuring point is arranged in the lower semisection at warm position, 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 at least one first temperature measuring point, and are directed to the current temperature of the first temperature measuring point
Value carries out the judgement of temperature difference, improves the accuracy of Fault Diagnosis for Electrical Equipment result.
For systems/devices embodiment, since it is substantially similar to the method embodiment, 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 provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Although the preferred embodiment of the application has been described, it is created once a person skilled in the art knows basic
Property concept, then additional changes and modifications can be made to these embodiments.So it includes excellent that the following claims are intended to be interpreted as
It selects embodiment and falls into all change and modification of the application range.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (11)
1. a kind of diagnostic method of electrical equipment fault, which is characterized in that pre- in each phase of the power equipment to be diagnosed
It is first provided with the linear thermometric position of full section, at least two first surveys are provided on the linear thermometric position of full section being arranged in each phase
Warm spot, at least two first temperature measuring points being arranged in each phase, at least one the 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 are 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 pre-set each first temperature measuring point, determine current
The temperature value of each first temperature measuring point；
Judge whether there is two the first temperature measuring points that temperature difference is greater than the temperature difference threshold of setting；
If it does, sending alarm information；
At least two second temperature measuring points are previously provided on the cooling fin of the power equipment to be diagnosed, if there is no the temperature difference
Value is greater than two the first temperature measuring points of the temperature difference threshold of setting, the method also includes:
It is determined and is calculated according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point
Method determines the frequency energy of each first temperature measuring point and/or the frequency energy of the second temperature measuring point；
Whether the frequency energy of the frequency energy and/or the second temperature measuring point that judge each first temperature measuring point is respectively positioned on the frequency of setting
In energy range；
If not, sending a warning message.
2. the method as described in claim 1, which is characterized in that the temperature difference threshold for judging whether there is temperature difference and being greater than setting
Two the first temperature measuring points of value include:
For at least two first temperature measuring point pre-set in each phase, judge at least two first temperature measuring points in the phase
It is greater than two the first temperature measuring points of the first temperature difference threshold of setting with the presence or absence of temperature difference.
3. the method as described in claim 1, which is characterized in that the temperature difference threshold for judging whether there is temperature difference and being greater than setting
Two the first temperature measuring points of value include:
For the first temperature measuring point pre-set in different phases, judge whether there is in two different phases, and temperature difference 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, which is characterized 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 there is the temperature difference threshold that temperature difference is greater than setting, the method is also wrapped
It includes:
The temperature curve at the linear thermometric position of full section of the current phase is determined according to the infrared image for each phase；
The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of the full section of each phase；
The phase is updated according to the temperature curve at the linear thermometric position of the full section of the phase after the disposal of gentle filter for each phase
The temperature value of upper each first temperature measuring point.
5. method according to any of claims 1-4, which is characterized in that pre-set first thermometric in each phase
The quantity of point is identical, and the first temperature measuring point of correspondence being arranged in different phases is located at identical thermometric position.
6. method as claimed in claim 5, which is characterized in that it is described to be directed to pre-set first temperature measuring point in different phases,
It judges whether there is and is located in two different phases, and temperature difference is greater than two the first temperature measuring point packets of the second temperature difference threshold of setting
It includes:
For the first temperature measuring point pre-set in different phases, the identical thermometric portion in two different phases is judged whether there is
Position, and temperature difference is greater than two the first temperature measuring points of the second temperature difference threshold of setting.
7. a kind of diagnostic device of electrical equipment fault, which is characterized in that the device includes:
Temperature determination module, for according to the infrared image of power equipment to be diagnosed that receives and pre-set each the
One temperature measuring point determines the temperature value of current each first temperature measuring point, wherein pre- in each phase for the power equipment that the follow-up breaks
It is first provided with the linear thermometric position of full section, at least two first surveys are provided on the linear thermometric position of full section being arranged in each phase
Warm spot, at least two first temperature measuring points being arranged in each phase, at least one the 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 are located at the lower semisection at the linear thermometric position of full section of the phase；
Temperature difference judgment module, two the first temperature measuring points for being greater than the temperature difference threshold of setting for judging whether there is temperature difference；Such as
Fruit exists, triggering alarm sending module；
Sending module is alerted, for sending alarm information；
Described device further include:
Determine judgment module, for if it is determined that there is no temperature difference be greater than setting temperature difference threshold two the first temperature measuring points,
Algorithm is determined according to the temperature value and preset frequency of the temperature value of each first temperature measuring point and/or each second temperature measuring point, really
The frequency energy of fixed each first temperature measuring point and/or the frequency energy of the second temperature measuring point, wherein the power equipment that the follow-up is disconnected
Cooling fin on be previously provided at 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 within the scope of the frequency energy of setting；If not, triggering alarm sending module.
8. device as claimed in claim 7, which is characterized in that the temperature difference judgment module is specifically used for in each phase
Pre-set at least two first temperature measuring point judges big with the presence or absence of temperature difference 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.
9. device as claimed in claim 7, which is characterized in that the temperature difference judgment module is specifically used for in different phases
Pre-set first temperature measuring point judges whether there is in two different phases, and temperature difference is greater than second temperature difference of setting
Two the first temperature measuring points of threshold value；If it does, triggering alarm sending module.
10. device as claimed in claim 8, which is characterized in that the temperature difference judgment module is specifically used for in different phases
Pre-set first temperature measuring point judges whether there is the identical thermometric position in two different phases, and temperature difference is greater than
Two the first temperature measuring points of the second temperature difference threshold of setting；If it does, triggering alarm sending module.
11. device as claimed in claim 7, which is characterized in that described device further include:
Temperature update module, according to the infrared image, determines the linear thermometric portion of full section of the current phase for being directed to each phase
The temperature curve of position；The disposal of gentle filter is carried out to the temperature curve at the linear thermometric position of the 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.
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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 |
| 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 |
| 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 |
| 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 |
| CN116106705B (en) * | 2023-04-12 | 2023-07-11 | 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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| CN105548747A (en) * | 2015-12-04 | 2016-05-04 | 国网技术学院 | Equipment fault identification system and method based on infrared temperature measurement technology |
| CN205403962U (en) * | 2016-03-01 | 2016-07-27 | 西安工程大学 | Transformer bushing trouble online diagnosis system of generating heat on post based on infrared temperature measurement |
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