CN110007220A - A kind of breaker mechanism operating status diagnostic method and device - Google Patents

A kind of breaker mechanism operating status diagnostic method and device Download PDF

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Publication number
CN110007220A
CN110007220A CN201910243794.7A CN201910243794A CN110007220A CN 110007220 A CN110007220 A CN 110007220A CN 201910243794 A CN201910243794 A CN 201910243794A CN 110007220 A CN110007220 A CN 110007220A
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China
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divide
shut brake
current
loop data
operating status
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CN201910243794.7A
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CN110007220B (en
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张帅
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CSG Electric Power Research Institute
China Southern Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
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China Southern Power Grid Co Ltd
Research Institute of Southern Power Grid Co Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/327Testing of circuit interrupters, switches or circuit-breakers

Abstract

The invention discloses a kind of breaker mechanism operating status diagnostic method and devices, it include: that each model divide-shut brake coil is tested and emulated according to preset fault type, temperature, voltage, current sample is obtained, and loop data library is constructed according to the current sample;Wherein, the loop data library includes the corresponding normal current curve of each model divide-shut brake coil, various fault current curves, temperature coefficient and voltage coefficient;According to the loop data library, the electric current of the divide-shut brake coil to be measured of acquisition is diagnosed, obtain operating status diagnostic result, and the loop data library can be updated using the operating status diagnostic result, corresponding loop data library can be established for the divide-shut brake coil of different model, guarantee the specific aim and accuracy of diagnosis, fault type can be diagnosed simultaneously, the accuracy of fault diagnosis can be effectively improved, and the loop data library can be expanded and update in real time, have good applicability.

Description

A kind of breaker mechanism operating status diagnostic method and device
Technical field
The present invention relates to electrical engineering field of measuring technique more particularly to a kind of breaker mechanism operating status diagnostic methods And device.
Background technique
In recent years, as network load increases and raising of the user to electricity consumption reliability requirement, electric system is to electric power The requirement of equipment is increasingly stringenter.Breaker had both played electrification and had suited as one of power equipment most important in electric system The control action of normal load current also plays the protection work for carrying, cut-offfing and closing abnormal current before the deadline With therefore, circuit breaker failure will will lead to serious power grid accident.
According to the statistical data of actual motion show most circuit breaker failures be due to caused by mechanism-trouble, and Shi Faxian mechanical defect, this is for improving the power supply reliability of system, extending the service life of breaker with important application valence Value.There are many kinds of breaker mechanism fault types, comprising: the bite of main body mechanism generation, deformation;Divide-shut brake coil contact is bad Lead to that breaking-closing operating cannot be triggered;Coil inside insulation breakdown leads to secondary loop short circuit etc..At present for breaker mechanism Appraisal procedure be mainly envelope method, this is according to " GB1984-2003 high-voltage AC breaker " national standard, normally to divide Closing coil current curve floats and lowers 5% as standard envelope, and actual curve is thought to occur beyond envelope range Failure.This method does not account for the different model of divide-shut brake coil and the otherness of application environment, i.e., does not consider the finger of coil Line information can not also judge fault type, lead to not accurately find failure cause.
Summary of the invention
The embodiment of the present invention provides a kind of breaker mechanism operating status diagnostic method and device, can effectively solve existing skill Art can not accurately find the problem of failure cause of breaker, can establish corresponding line for the divide-shut brake coil of different model Database is enclosed, the specific aim and accuracy of diagnosis can be effectively improved.
One embodiment of the invention provides a kind of breaker mechanism operating status diagnostic method, comprising:
Each model divide-shut brake coil is tested and emulated according to preset fault type, temperature, voltage, obtains electric current Sample, and loop data library is constructed according to the current sample;Wherein, the loop data library includes each model divide-shut brake The corresponding normal current curve of coil, various fault current curves, temperature coefficient and voltage coefficient;
According to the loop data library, the electric current of the divide-shut brake coil to be measured of acquisition is diagnosed, operating status is obtained Diagnostic result, and the loop data library can be updated using the operating status diagnostic result.
As an improvement of the above scheme, it is described according to preset fault type, temperature, voltage to each model divide-shut brake coil It is tested and is emulated, obtain current sample, and loop data library is constructed according to the current sample, specifically:
The normal current for acquiring each model divide-shut brake coil, the normal current for obtaining several divide-shut brake coils are bent Line, and calculate the averaged curve and standard deviation of the normal current curve;
The divide-shut brake coil current under several groups different voltages is tested, the normal current in predetermined voltage threshold is obtained The proportionality coefficient of curve and the averaged curve, as voltage coefficient;
The divide-shut brake coil current under several groups different temperatures is tested, is obtained described normal in default scene temperature threshold value The proportionality coefficient of current curve and the averaged curve, as temperature coefficient;
Test or analogue simulation are carried out to each model divide-shut brake coil according to preset failure type, obtained described various The electric current of number divide-shut brake coil, to obtain the various fault current curves of several divide-shut brake coils;
According to the normal current curve of each model divide-shut brake coil, the various fault current curves, the temperature Coefficient, the voltage coefficient and the standard deviation construct loop data library.
As an improvement of the above scheme, described according to the loop data library, to the electricity of the divide-shut brake coil to be measured of acquisition Stream is diagnosed, and obtains operating status diagnostic result, and can be using the operating status diagnostic result to the loop data library It is updated, comprising:
The electric current of the divide-shut brake coil to be measured is acquired, and the electric current for obtaining the divide-shut brake coil to be measured is bent Line;
The mechanism-trouble parameter for influencing the current curve is simulated, and extracts different faults to the current curve Affecting laws;Wherein, the mechanism-trouble parameter includes coil voltage, coil resistance, coil turn, iron core gap and iron core Resistance;
According to the normal current range envelope line of the preset divide-shut brake coil to be measured and the mechanism-trouble parameter Affecting laws judge whether the divide-shut brake coil to be measured breaks down and its fault type.
As an improvement of the above scheme, the method includes the construction methods of the normal current range envelope line:
Determine the model of the divide-shut brake coil to be measured;
Measure the voltage and scene temperature of the divide-shut brake coil to be measured;
According to the loop data library, the corresponding temperature coefficient of the model, the electricity of the divide-shut brake coil to be measured are obtained Press coefficient, normal average current curve and standard deviation;
According to the temperature coefficient and the voltage coefficient, the reference current under the scene temperature, the voltage is determined, And obtain benchmark average current curve;
Based on the reference current curve, in addition and subtract the standard deviation of presupposition multiple, obtain the division to be measured The normal current range envelope line of brake cable circle.
As an improvement of the above scheme, the method also includes:
The extraction for carrying out characteristic value to the current curve according to the affecting laws of the mechanism-trouble parameter, as diagnosis The foundation of algorithm;
When detecting that the characteristic value is within the scope of preset normality threshold, judge that the breaker mechanism is in normal State obtains the first diagnostic result;
According to first diagnostic result and the current curve, to division brake cable to be measured described in the loop data library The corresponding divide-shut brake loop data of the model of circle is updated.
As an improvement of the above scheme, the method also includes:
When detecting that any characteristic value is within the scope of preset fault threshold, judges that breaker breaks down, obtain To second opinion result;
It according to the preset failure type, is diagnosed using preset support vector cassification model, obtains described The corresponding fault type of two diagnostic results;
According to the current curve, the second opinion result and its corresponding fault type, to the loop data library Described in the corresponding divide-shut brake loop data of model of divide-shut brake coil to be measured be updated.
As an improvement of the above scheme, the method also includes the buildings of the support vector cassification model:
Change the mechanism-trouble parameter, obtains the changing rule of the characteristic value of the current curve;
The characteristic value is normalized according to the changing rule, obtains characteristic parameter;
According to the characteristic parameter, normality threshold and the fault threshold are preset;
According to the characteristic parameter and the preset failure type, the support vector machines pre-established is trained, is obtained To the support vector cassification model.
Another embodiment of the present invention correspondence provides a kind of breaker mechanism operating status diagnostic device, comprising:
Loop data library constructs module, is used for according to preset fault type, temperature, voltage to each model divide-shut brake coil It is tested and is emulated, obtain current sample, and loop data library is constructed according to the current sample;Wherein, the coil number It include the corresponding normal current curve of each model divide-shut brake coil, various fault current curves, temperature coefficient and electricity according to library Press coefficient;
Diagnostic module, for being diagnosed to the electric current of the divide-shut brake coil to be measured of acquisition according to the loop data library, Operating status diagnostic result is obtained, and the loop data library can be updated using the operating status diagnostic result.
Compared with prior art, breaker mechanism operating status diagnostic method and device disclosed by the embodiments of the present invention lead to It crosses and each model divide-shut brake coil is tested and emulated according to preset fault type, temperature, voltage, obtain current sample, And loop data library is constructed according to the current sample, wherein the loop data library includes each model divide-shut brake coil Corresponding normal current curve, various fault current curves, temperature coefficient and voltage coefficient, it is right according to the loop data library The electric current of the divide-shut brake coil to be measured of acquisition is diagnosed, and obtains operating status diagnostic result, and can utilize the operating status Diagnostic result is updated the loop data library, can establish corresponding coil number for the divide-shut brake coil of different model According to library, guarantee the specific aim and accuracy of diagnosis, while fault type can be diagnosed, fault diagnosis can be effectively improved Accuracy, and the loop data library can be expanded and update in real time, have good applicability.
Another embodiment of the present invention provides a kind of breaker mechanism operating status diagnostic devices, including processor, storage Device and storage in the memory and are configured as the computer program executed by the processor, and the processor executes Breaker mechanism operating status diagnostic method described in foregoing invention embodiment is realized when the computer program.
Another embodiment of the present invention provides a kind of storage medium, the computer readable storage medium includes the meter of storage Calculation machine program, wherein control equipment where the computer readable storage medium in computer program operation and execute State breaker mechanism operating status diagnostic method described in inventive embodiments.
Detailed description of the invention
Fig. 1 is a kind of flow diagram for breaker mechanism operating status diagnostic method that one embodiment of the invention provides;
Fig. 2 is the building flow chart in the loop data library that one embodiment of the invention provides;
Fig. 3 is the building flow chart for the normal current range envelope line that one embodiment of the invention provides;
Fig. 4 is the flow chart for the method for diagnosing faults that one embodiment of the invention provides;
Fig. 5 is a kind of structural schematic diagram for breaker mechanism operating status diagnostic device that one embodiment of the invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is 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.
It is that a kind of process for breaker mechanism operating status diagnostic method that one embodiment of the invention provides is shown referring to Fig. 1 It is intended to, comprising:
S110, each model divide-shut brake coil is tested and is emulated according to preset fault type, temperature, voltage, obtained Loop data library is constructed to current sample, and according to the current sample;Wherein, the loop data library includes each model The corresponding normal current curve of divide-shut brake coil, various fault current curves, temperature coefficient and voltage coefficient.
It is understood that the loop data library of initial construction, the initial foundation as diagnosis.Wherein, the coil number It is acquired according to the multiplicating that normal current curve in library is every kind of model normal divide-shut brake coil current when dispatching from the factory to breaker.Institute Various fault current curves are stated to establish primary fault library, and pass through field test and experiment according to different faults type is preset The method of room simulation acquires the current characteristic under different faults state for the coil of each model, extracts the feature of curve Parameter, the special signature as each fault type.Wherein, the characteristic parameter can be current peak, electric current valley, peak value Time, valley time and current maxima.The special signature of the fault type is the corresponding characteristic parameter of each fault type Value range, the diagnosis for fault type.
Preferably, the normal current for acquiring each model divide-shut brake coil obtains the normal of several divide-shut brake coils Current curve, and calculate the averaged curve and standard deviation of the normal current curve;
The divide-shut brake coil current under several groups different voltages is tested, the normal current in predetermined voltage threshold is obtained The proportionality coefficient of curve and the averaged curve, as voltage coefficient;
The divide-shut brake coil current under several groups different temperatures is tested, is obtained described normal in default scene temperature threshold value The proportionality coefficient of current curve and the averaged curve, as temperature coefficient;
Test or analogue simulation are carried out to each model divide-shut brake coil according to preset failure type, obtained described various The electric current of number divide-shut brake coil, to obtain the various fault current curves of several divide-shut brake coils;
According to the normal current curve of each model divide-shut brake coil, the various fault current curves, the temperature Coefficient, the voltage coefficient and the standard deviation construct loop data library.
Wherein, the acquisition of divide-shut brake coil current can be popped one's head in directly to measure by induction coil and be obtained, and be practical breaker machine Electric current in structure work, does not add other any restrictions conditions.Fault type can be voltage instability, poor contact, iron core card Puckery, turn-to-turn short circuit, sound iron core gap exception, divide-shut brake pawl lack of lubrication.
Specifically, referring to fig. 2, it is the building flow chart in the loop data library that one embodiment of the invention provides, including chooses 5 The model coil development experimental study of group different batches, every group coil 5.It is real that 5 coils are all carried out with normal and fault simulation It tests, determines the dispersion degree (i.e. standard deviation) of model coil.Meanwhile it includes voltage instability, poor contact, iron core that fault type, which is arranged, Bite, turn-to-turn short circuit, sound iron core gap are abnormal.
Normal simulated experiment is measuring coil (supply voltage 220V, 79 Ω (scene temperature of coil resistance under normal operation 27℃)).For wherein one group, each coil samples 10 curves, amounts to 50 curves.Calculate the normal current of every group of coil Average and standard deviation, and then obtain the average current curve and standard deviation of 50 normal current curves.
It determines voltage coefficient, for wherein one group, chooses 1 coil, voltage changes within the scope of 140-260V, between voltage Be divided into 10V, each voltage class acquires a curve, totally 13, by interpolation generate under different voltages normal current curve with The proportionality coefficient of the average current curve.
Temperature coefficient chooses 1 coil, measuring coil is in -10-70 DEG C of (every minor tick temperature for wherein one group It is 10 DEG C), 1 curve of each scene temperature down-sampling, totally 9 curves, pass through normal electricity at a temperature of interpolation generation Different field The proportionality coefficient of flow curve and the average current curve.
Fault simulating test, including voltage instability failure: the 65%, 80%, 90% and 120% of specified 220V voltage Under, 5 coils, each voltage class samples 3 curves, amounts to 60 curves.Poor contact failure: 5 coils change circuit Resistance is 120%, 130%, 140% and 150% originally, and each difference resistance, each coil samples 3 curves, amounts to 60 Curve.Sound iron core gap is abnormal: 5 coils, changes 30%, 50%, 150% and 170% that gap is former gap, each Different gap, each coil sample 3 curves, amount to 60 curves.Turn-to-turn short circuit: needing special the number of turns is 1600 circles, 1200 Circle, 800 circles each 5.Each coil acquires 3, electric current, amounts to 45, while being emulated, and changing the number of turns is normal the number of turns 60%, 70%, 80%, 90%.Iron core bite: 5 coils are respectively adopted 3 kinds of different springs of stiffness factor and are tested, often A coil acquires 3, electric current, amounts to 45, while being emulated, and changes 10%, 15%, 20% that resistance is normal resistance, 25%, 30%.
It should be noted that the method that the loop data library initially set up first passes through experiment in advance is established, subsequent actual use In, loop data library can be updated in real time according to measurement result, extend, have the function of machine learning.Moreover, the line Whether circle database updates, extends by manually determining, therefore is avoided that typing bad data destroys the accuracy of fingerprint base.
S120, according to the loop data library, the electric current of the divide-shut brake coil to be measured of acquisition is diagnosed, is run Condition diagnosing is as a result, can simultaneously be updated the loop data library using the operating status diagnostic result.
Specifically, being acquired to the electric current of the divide-shut brake coil to be measured, and obtain the divide-shut brake coil to be measured Current curve;
The mechanism-trouble parameter for influencing the current curve is simulated, and extracts different faults to the current curve Affecting laws;Wherein, the mechanism-trouble parameter includes coil voltage, coil resistance, coil turn, iron core gap and iron core Resistance;
According to the normal current range envelope line of the preset divide-shut brake coil to be measured and the mechanism-trouble parameter Affecting laws judge whether the divide-shut brake coil to be measured breaks down and its fault type.
Wherein, the breaker mechanism operating status diagnostic method further includes the building of the normal current range envelope line Method:
Determine the model of the divide-shut brake coil to be measured;
Measure the voltage and scene temperature of the divide-shut brake coil to be measured;
According to the loop data library, the corresponding temperature coefficient of the model, the electricity of the divide-shut brake coil to be measured are obtained Press coefficient, normal average current curve and standard deviation;
According to the temperature coefficient and the voltage coefficient, the reference current under the scene temperature, the voltage is determined, And obtain benchmark average current curve;
Based on the reference current curve, in addition and subtract the standard deviation of presupposition multiple, obtain the division to be measured The normal current range envelope line of brake cable circle.
Wherein, it needs to pre-process the initial data of current curve, be carried out based on pretreated initial data Characteristic parameter extraction.Wherein, the initial parameter includes the peak point, valley point, slope of curve.
It is the building flow chart for the normal current range envelope line that one embodiment of the invention provides referring to Fig. 3, including first The corresponding coil model of divide-shut brake coil to be measured described in the loop data library lookup, and collection site temperature and voltage are linked, Read temperature coefficient, voltage coefficient and the standard deviation of respective model coil.Institute is determined according to the voltage coefficient and temperature coefficient State the reference current under scene temperature and the voltage, wherein the reference current is delivery test electric current.Based on the benchmark Current curve, in addition and subtract the standard deviation of presupposition multiple, construct normal current range envelope line, visualized as diagnosis The foundation of display judges convenient for worker.For example, presupposition multiple can be 3 times.When the current curve of the divide-shut brake coil to be measured When falling in the normal current range envelope line, then judge that the breaker is likely to be at normal condition.When described to be measured point When the current curve of closing coil exceeds the normal current range envelope line, then judge that the breaker is likely to be at failure shape State.
It as an example, can be by following steps to be set to normality threshold and fault threshold:
Using analytic method, extract every current curve 5 characteristic parameters and average current curve 5 characteristic parameters into Row normalized.With the special signature of characteristic parameter and the fault type after normalized to support vector machines mould Type is trained, and obtains support vector cassification model, i.e. coil fault database in loop data library.
Preferably, normality threshold range is preset, voltage ± 5%, resistance ± 5%, gap ± 0.5mm, the number of turns ± 5%, the dispersibility of resistance ± 5% takes maximum characteristic parameter as normality threshold.Preset fault threshold range, voltage 65% and 120%, resistance 150%, gap 30% and 170%, the number of turns 80% and resistance 10%, that is, take minimal characteristic parameter conduct Fault threshold.
It referring to fig. 4, is the flow chart for the method for diagnosing faults that one embodiment of the invention provides.
Further, characteristic value is carried out to the current curve according to the affecting laws of the mechanism-trouble parameter to mention It takes, the foundation as diagnosis algorithm.
In a kind of optional embodiment of step S120, the operating status of breaker can be diagnosed by following steps It is normal:
When detecting that the characteristic value is within the scope of preset normality threshold, judge that the breaker mechanism is in normal State obtains the first diagnostic result;
According to first diagnostic result and the current curve, to division brake cable to be measured described in the loop data library The corresponding divide-shut brake loop data of the model of circle is updated.
In a kind of optional embodiment of step S120, the operating status of breaker can be diagnosed by following steps For failure, and judge its fault type:
When detecting that any characteristic value is within the scope of preset fault threshold, judges that breaker breaks down, obtain To second opinion result;
It according to the preset failure type, is diagnosed using preset support vector cassification model, obtains described The corresponding fault type of two diagnostic results;
According to the current curve, the second opinion result and its corresponding fault type, to the loop data library Described in the corresponding divide-shut brake loop data of model of divide-shut brake coil to be measured be updated.
Wherein, the construction step of the support vector cassification model includes:
Change the mechanism-trouble parameter, obtains the changing rule of the characteristic value of the current curve;
The characteristic value is normalized according to the changing rule, obtains characteristic parameter;
According to the characteristic parameter, normality threshold and the fault threshold are preset;
According to the characteristic parameter and the preset failure type, the support vector machines pre-established is trained, is obtained To the support vector cassification model.
It is appreciated that support vector machines (SVM) is the general-purpose machinery new based on one kind under Statistical Learning Theory frame Learning method not only preferably solves the small sample for perplexing many learning methods in the past, overfitting, high-dimensional, local minimum Etc. actual application problems, and have very strong generalization ability, for solve classification problem and time series forecasting modeling provide A kind of feasible effective way.In the present embodiment, with diagnosis number increase, the support vector cassification model constantly into Row training guarantees the accuracy of diagnosis with real-time update.Further, feature of the difference former-wound coil under different faults mode Condition, wherein the characteristic condition includes coil voltage, coil resistance, coil turn, iron core gap and resistance, and then is extracted The characteristic parameter of the offline loop current of characteristic condition is normalized to obtain characteristic parameter, and then the normal of model is arranged Threshold value and the fault threshold, so that the support vector machines that training pre-establishes obtains support vector cassification model.
It is appreciated that in conjunction with above-mentioned loop data library by the normality threshold that is arranged after normalized and fault threshold into Row diagnosis.When detecting that 5 characteristic parameters are all within the scope of normality threshold, judge the High Voltage Circuit Breaker Condition be it is normal, Current curve and the first diagnostic result are directly exported, and optionally loop data library is updated.When detecting the presence of When one characteristic parameter is within the scope of fault threshold, the High Voltage Circuit Breaker Condition is judged for failure, to the second opinion knot Fruit carries out early warning, carries out fault type diagnosis using support vector cassification model, exports fault type, current curve and second Diagnostic result, and optionally the data of the divide-shut brake coil of the model in loop data library are updated.For example, early warning It can be used to access light emitting diode in circuit or generate pre-warning signal and be transferred in display in a manner of showing early warning.
A kind of breaker mechanism operating status diagnostic method provided in an embodiment of the present invention passes through, according to the electricity obtained in advance It flows sample and constructs loop data library, wherein the loop data library includes normal current curve, various fault current curves, temperature Spend coefficient and voltage coefficient, loop data library according to the loop data library, to the electric current of the divide-shut brake coil to be measured of acquisition into Row diagnosis, obtains operating status diagnostic result, and diagnostic result carries out more the loop data library according to the operation state Newly, corresponding loop data library can be established for the divide-shut brake coil of different model, guarantees the specific aim of diagnosis, while can Fault type is diagnosed, the accuracy of fault diagnosis can be effectively improved, and considers the influence of environment temperature, ensure that and examine The accuracy of disconnected result, while coil database can be expanded and be updated in real time, have good applicability and scalability, and With the increase with diagnosis number, the reliability of diagnostic result can be effectively improved.
It is that a kind of structure for breaker mechanism operating status diagnostic device that one embodiment of the invention provides is shown referring to Fig. 5 It is intended to.
Loop data library constructs module 210, is used for according to preset fault type, temperature, voltage to each model divide-shut brake Coil is tested and is emulated, and obtains current sample, and construct loop data library according to the current sample;Wherein, the line Enclosing database includes the corresponding normal current curve of each model divide-shut brake coil, various fault current curves, temperature coefficient And voltage coefficient;
Diagnostic module 220, for examining the electric current of the divide-shut brake coil to be measured of acquisition according to the loop data library It is disconnected, operating status diagnostic result is obtained, and can be updated using the operating status diagnostic result to the loop data library.
Preferably, building module 210 in the loop data library includes:
Normal current tracing analysis unit obtains several institutes for acquiring the normal current of each model divide-shut brake coil The normal current curve of divide-shut brake coil is stated, and calculates the averaged curve and standard deviation of the normal current curve;
Voltage tester unit, the divide-shut brake coil current for testing under several groups different voltages, obtains predeterminated voltage threshold The proportionality coefficient of the normal current curve and the averaged curve in value, as voltage coefficient;
Temperature test unit, the divide-shut brake coil current for testing under several groups different temperatures obtain default scene temperature The proportionality coefficient for spending the normal current curve and the averaged curve in threshold value, as temperature coefficient;
Fault test unit, for each model divide-shut brake coil to be tested or emulated according to preset failure type Simulation, obtains the electric current of each model divide-shut brake coil, to obtain the various failures electricity of several divide-shut brake coils Flow curve;
Loop data library construction unit, for according to the normal current curve of each model divide-shut brake coil, described each Kind fault current curve, the temperature coefficient, the voltage coefficient and the standard deviation, construct loop data library.
Preferably, the diagnostic module 220 includes:
Current acquisition unit is acquired for the electric current to the divide-shut brake coil to be measured, and obtains described to be measured point The current curve of closing coil;
Affecting laws extraction unit for simulating to the mechanism-trouble parameter for influencing the current curve, and extracts Affecting laws of the different faults to the current curve;Wherein, the mechanism-trouble parameter include coil voltage, coil resistance, Coil turn, iron core gap and iron core resistance;
Judging unit, for the normal current range envelope line and the machine according to the preset divide-shut brake coil to be measured The affecting laws of structure fault parameter judge whether the divide-shut brake coil to be measured breaks down and its fault type.
Preferably, the diagnostic module 220 further include:
Model acquiring unit, for determining the model of the divide-shut brake coil to be measured;
Voltage and scene temperature measuring unit, for measuring the voltage and scene temperature of the divide-shut brake coil to be measured;
Data capture unit, for obtaining the model of the divide-shut brake coil to be measured according to the loop data library Corresponding temperature coefficient, voltage coefficient, normal average current curve and standard deviation;
Benchmark average current curve acquisition unit, described in determining according to the temperature coefficient and the voltage coefficient Reference current under scene temperature, the voltage, and obtain benchmark average current curve;
Envelope computing unit, for being based on the reference current curve, in addition and subtracting the standard of presupposition multiple Difference obtains the normal current range envelope line of the divide-shut brake coil to be measured.
Preferably, the diagnostic module 220 further include:
Feature extraction unit, for carrying out feature to the current curve according to the affecting laws of the mechanism-trouble parameter The extraction of value, the foundation as diagnosis algorithm;
First diagnostic result diagnosis unit, for when detecting that the characteristic value is within the scope of preset normality threshold, Judge that the breaker mechanism is in normal condition, obtains the first diagnostic result;
First updating unit is used for according to first diagnostic result and the current curve, to the loop data library Described in the corresponding divide-shut brake loop data of model of divide-shut brake coil to be measured be updated.
Preferably, the diagnostic module 220 further include:
Second opinion result diagnosis unit detects any characteristic value within the scope of preset fault threshold for working as When, judge that breaker breaks down, obtains second opinion result;
Failure diagnosis unit, for according to the preset failure type, using preset support vector cassification model into Row diagnosis, obtains the corresponding fault type of the second opinion result;
Second updating unit is used for according to the current curve, the second opinion result and its corresponding fault type, The corresponding divide-shut brake loop data of the model of divide-shut brake coil to be measured described in the loop data library is updated.
Preferably, the diagnostic module 220 further include:
Changing rule acquiring unit obtains the characteristic value of the current curve for changing the mechanism-trouble parameter Changing rule;
Normalized unit obtains spy for the characteristic value to be normalized according to the changing rule Levy parameter;
Setting unit, for presetting normality threshold and the fault threshold according to the characteristic parameter;
Training unit is used for according to the characteristic parameter and the preset failure type, to the supporting vector pre-established Machine is trained, and obtains the support vector cassification model.
It is the structural schematic diagram for the breaker mechanism operating status diagnostic device that one embodiment of the invention provides referring to Fig. 5. The breaker mechanism operating status diagnostic device of the embodiment includes: processor, memory and stores in the memory And the computer program that can be run on the processor.The processor is realized above-mentioned each when executing the computer program Step in breaker mechanism operating status diagnostic method embodiment.Alternatively, when the processor executes the computer program Realize the function of each module/unit in above-mentioned each Installation practice.
Illustratively, the computer program can be divided into one or more module/units, one or more A module/unit is stored in the memory, and is executed by the processor, to complete the present invention.It is one or more A module/unit can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing institute State implementation procedure of the computer program in the breaker mechanism operating status diagnostic device.
The breaker mechanism operating status diagnostic device can be desktop PC, notebook, palm PC and cloud Server etc. is held to calculate equipment.The breaker mechanism operating status diagnostic device may include, but be not limited only to, and processor is deposited Reservoir.It will be understood by those skilled in the art that the schematic diagram is only the example of breaker mechanism operating status diagnostic device, The restriction to breaker mechanism operating status diagnostic device is not constituted, may include components more more or fewer than diagram, or Person combines certain components or different components, such as the breaker mechanism operating status diagnostic device can also include defeated Enter output equipment, network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit (Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field- Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic, Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor Deng the processor is the control centre of the breaker mechanism operating status diagnostic device, and various interfaces and route is utilized to connect Connect the various pieces of entire breaker mechanism operating status diagnostic device.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization The various functions of breaker mechanism operating status diagnostic device.The memory can mainly include storing program area and storing data Area, wherein storing program area can application program needed for storage program area, at least one function (such as sound-playing function, Image player function etc.) etc.;Storage data area, which can be stored, uses created data (such as audio data, electricity according to mobile phone Script for story-telling etc.) etc..In addition, memory may include high-speed random access memory, it can also include nonvolatile memory, such as Hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other volatibility are solid State memory device.
Wherein, if the integrated module/unit of the breaker mechanism operating status diagnostic device is with SFU software functional unit Form realize and when sold or used as an independent product, can store in a computer readable storage medium. Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through computer journey Sequence is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium, the meter Calculation machine program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program packet Include computer program code, the computer program code can for source code form, object identification code form, executable file or Certain intermediate forms etc..The computer-readable medium may include: any reality that can carry the computer program code Body or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read- Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and Software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be according in jurisdiction Legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent practice, meter Calculation machine readable medium does not include electric carrier signal and telecommunication signal.
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand And implement.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.

Claims (10)

1. a kind of breaker mechanism operating status diagnostic method characterized by comprising
Each model divide-shut brake coil is tested and emulated according to preset fault type, temperature, voltage, obtains electric current sample This, and loop data library is constructed according to the current sample;Wherein, the loop data library includes each model divide-shut brake line Enclose corresponding normal current curve, various fault current curves, temperature coefficient and voltage coefficient;
According to the loop data library, the electric current of the divide-shut brake coil to be measured of acquisition is diagnosed, obtains operating status diagnosis As a result, can be simultaneously updated using the operating status diagnostic result to the loop data library.
2. breaker mechanism operating status diagnostic method as described in claim 1, which is characterized in that described according to preset event Barrier type, temperature, voltage are tested and are emulated to each model divide-shut brake coil, obtain current sample, and according to the electric current Sample constructs loop data library, specifically:
The normal current for acquiring each model divide-shut brake coil obtains the normal current curve of several divide-shut brake coils, and Calculate the averaged curve and standard deviation of the normal current curve;
The divide-shut brake coil current under several groups different voltages is tested, the normal current curve in predetermined voltage threshold is obtained With the proportionality coefficient of the averaged curve, as voltage coefficient;
The divide-shut brake coil current under several groups different temperatures is tested, the normal current in default scene temperature threshold value is obtained The proportionality coefficient of curve and the averaged curve, as temperature coefficient;
Test or analogue simulation are carried out to each model divide-shut brake coil according to preset failure type, obtain each model point The electric current of closing coil, to obtain the various fault current curves of several divide-shut brake coils;
According to the normal current curve of each model divide-shut brake coil, the various fault current curves, the temperature coefficient, The voltage coefficient and the standard deviation construct loop data library.
3. breaker mechanism operating status diagnostic method as claimed in claim 2, which is characterized in that described according to the coil Database diagnoses the electric current of the divide-shut brake coil to be measured of acquisition, obtains operating status diagnostic result, and can be described in Operating status diagnostic result is updated the loop data library, comprising:
The electric current of the divide-shut brake coil to be measured is acquired, and obtains the current curve of the divide-shut brake coil to be measured;
The mechanism-trouble parameter for influencing the current curve is simulated, and extracts different faults to the shadow of the current curve Ring rule;Wherein, the mechanism-trouble parameter includes coil voltage, coil resistance, coil turn, iron core gap and iron core resistance Power;
According to the influence of the normal current range envelope line of the preset divide-shut brake coil to be measured and the mechanism-trouble parameter Rule judges whether the divide-shut brake coil to be measured breaks down and its fault type.
4. breaker mechanism operating status diagnostic method as claimed in claim 3, which is characterized in that the method includes described The construction method of normal current range envelope line:
Determine the model of the divide-shut brake coil to be measured;
Measure the voltage and scene temperature of the divide-shut brake coil to be measured;
According to the loop data library, the corresponding temperature coefficient of the model, the voltage system of the divide-shut brake coil to be measured are obtained Several, normal average current curve and standard deviation;
According to the temperature coefficient and the voltage coefficient, the reference current under the scene temperature, the voltage is determined, and obtain To benchmark average current curve;
Based on the reference current curve, in addition and subtract the standard deviation of presupposition multiple, obtain the division brake cable to be measured The normal current range envelope line of circle.
5. breaker mechanism operating status diagnostic method as claimed in claim 4, which is characterized in that the method also includes:
The extraction for carrying out characteristic value to the current curve according to the affecting laws of the mechanism-trouble parameter, as diagnosis algorithm Foundation;
When detecting that the characteristic value is within the scope of preset normality threshold, judge that the breaker mechanism is in normal shape State obtains the first diagnostic result;
According to first diagnostic result and the current curve, to divide-shut brake coil to be measured described in the loop data library The corresponding divide-shut brake loop data of model is updated.
6. breaker mechanism operating status diagnostic method as claimed in claim 5, which is characterized in that the method also includes:
When detecting that any characteristic value is within the scope of preset fault threshold, judge that breaker breaks down, obtains Two diagnostic results;
It according to the preset failure type, is diagnosed using preset support vector cassification model, obtains described second and examine The disconnected corresponding fault type of result;
According to the current curve, the second opinion result and its corresponding fault type, to institute in the loop data library The corresponding divide-shut brake loop data of model for stating divide-shut brake coil to be measured is updated.
7. breaker mechanism operating status diagnostic method as claimed in claim 6, which is characterized in that the method also includes institutes State the building of support vector cassification model:
Change the mechanism-trouble parameter, obtains the changing rule of the characteristic value of the current curve;
The characteristic value is normalized according to the changing rule, obtains characteristic parameter;
According to the characteristic parameter, normality threshold and the fault threshold are preset;
According to the characteristic parameter and the preset failure type, the support vector machines pre-established is trained, obtains institute State support vector cassification model.
8. a kind of breaker mechanism operating status diagnostic device characterized by comprising
Loop data library constructs module, for being carried out according to preset fault type, temperature, voltage to each model divide-shut brake coil Test and emulation obtain current sample, and construct loop data library according to the current sample;Wherein, the loop data library Including the corresponding normal current curve of each model divide-shut brake coil, various fault current curves, temperature coefficient and voltage system Number;
Diagnostic module, for diagnosing, obtaining to the electric current of the divide-shut brake coil to be measured of acquisition according to the loop data library Operating status diagnostic result, and the loop data library can be updated using the operating status diagnostic result.
9. a kind of breaker mechanism operating status diagnostic device, including processor, memory and storage are in the memory And it is configured as the computer program executed by the processor, the processor is realized when executing the computer program as weighed Benefit require any one of 1 to 7 described in breaker mechanism operating status diagnostic method.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed Benefit require any one of 1 to 7 described in breaker mechanism operating status diagnostic method.
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CN110530638A (en) * 2019-07-31 2019-12-03 西安交通大学 Based on number twin aeroplane engine main bearing damage check and diagnostic method
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CN110673024A (en) * 2019-09-10 2020-01-10 国网浙江省电力有限公司嘉兴供电公司 High-voltage circuit breaker fault early warning method based on power internet of things
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CN112731123A (en) * 2020-11-25 2021-04-30 广西电网有限责任公司电力科学研究院 Method and device for detecting and evaluating performance of circuit breaker mechanism
CN112731131A (en) * 2020-12-22 2021-04-30 珠海万谱科技有限公司 Fault diagnosis method and device for electric direct-current isolating switch
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