CN106152980B - A kind of deformation of transformer winding detection method and system - Google Patents
A kind of deformation of transformer winding detection method and system Download PDFInfo
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- CN106152980B CN106152980B CN201610808222.5A CN201610808222A CN106152980B CN 106152980 B CN106152980 B CN 106152980B CN 201610808222 A CN201610808222 A CN 201610808222A CN 106152980 B CN106152980 B CN 106152980B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/24—Measuring arrangements characterised by the use of fluids for measuring the deformation in a solid
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Abstract
This application discloses a kind of deformation of transformer winding detection method and systems, winding oil pressure data after being broken down by acquisition transformer, and functional transformation is carried out to the data, obtain the harmonic component of oil pressure data after failure, calculate the ratio between the harmonic component of oil pressure data before oil pressure data harmonic component and failure after failure, obtain harmonic component Amplitude Ration, Amplitude Ration is judged, if being more than threshold value, then judge winding deformation, it can be seen that, the application is after transformer breaks down, it is fast using pressure sensor speed in the prior art, the feature that precision is high and measurement range is big, quick and precisely obtain oil pressure data, calculating process uses functional transformation and harmonic component ratio, reduce the error that oil pressure parameter itself carries, simultaneously also by reducing data error caused by external influence factor, increase accuracy in detection, and become Depressor, which need not shut down or shut down for a long time, can judge whether winding deforms, to improve the operational efficiency of transformer.
Description
Technical field
The present invention relates to electrical equipment fault detection field, in particular to a kind of deformation of transformer winding detection method and it is
System.
Background technique
The fast development of China's industry be unable to do without the power supply system of high efficient and reliable, and power supply system is in order to guarantee high efficient and reliable
Power supply, it is accurate to need to detect to the power equipment that breaks down, in particular for the transformer of electric system.According to transformer event
The statistics of barrier, winding deformation caused by winding short circuit intensity is insufficient account for 60% of transformer fault or more.
In the prior art, there is frequency response method to the detection mode of the winding deformation of transformer, pass through measuring transformer frequency
Rate, which responds and compares its variation, judges whether winding deforms, and in addition there are the methods of Low Voltage Impulse Methods, short-circuit reactance method, with top
It is out of service that method is required to transformer, and the test period is long, and scene interference is big, if it find that abnormal also carry out hanging cover inspection
It looks into, largely reduces transformer station high-voltage side bus efficiency.
Therefore, the time for how reducing transformer maintenance down, quickly winding deformation is judged, to improve transformation
Device operational efficiency is the current technical issues that need to address.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of deformation of transformer winding detection method and systems, by obtaining
Winding oil pressure data after taking transformer to break down, and functional transformation is carried out to the data, obtain oil pressure data after failure
Harmonic component calculates the ratio between the harmonic component of oil pressure data before oil pressure data harmonic component and failure after failure, obtains harmonic wave point
Amplitude Ration is measured, Amplitude Ration is judged, if being more than threshold value, judges winding deformation, it is seen then that in transformer event occurs for the present invention
After barrier, using the feature that pressure sensor speed is fast, precision is high and measurement range is big in the prior art, oil pressure is quick and precisely obtained
Data calculation process uses functional transformation and harmonic component ratio, reduces the error that oil pressure parameter itself carries, while
Reduce external influence factor, increases accuracy in detection, and transformer need not shut down or shut down for a long time and can judge
Whether winding deforms, and improves the operational efficiency of transformer.Its concrete scheme is as follows:
A kind of deformation of transformer winding detection method, comprising:
After transformer breaks down, the first oil pressure data of winding are obtained；
Functional transformation is carried out to the first oil pressure data, obtains the corresponding harmonic component of the first oil pressure data；
The functional transformation is carried out to the second oil pressure data of the winding, it is humorous accordingly to obtain the second oil pressure data
Wave component, wherein the second oil pressure data are oil pressure data of the winding before the transformer breaks down；
The ratio for seeking the corresponding harmonic component of the first oil pressure data harmonic component corresponding with the second oil pressure data, obtains
To harmonic component Amplitude Ration；
The harmonic component Amplitude Ration is judged, if the harmonic component Amplitude Ration is more than first threshold, is issued
Winding damages alarm.
Preferably, the functional transformation is Fast Fourier Transform (FFT).
Preferably, the corresponding harmonic component of the first oil pressure data and the corresponding harmonic component of the second oil pressure data
It is second harmonic component.
Preferably, the first oil pressure data for obtaining winding specifically include:
Real-time monitoring is carried out to the oil pressure of the winding, and after the transformer breaks down, obtains the winding
The first oil pressure data.
Preferably, the detection method further include:
The second harmonic component amplitude ratio is judged, if second harmonic component amplitude ratio is greater than the second threshold
Value, and be less than first threshold, then warning may be damaged by issuing winding,
Wherein, the second threshold is less than the first threshold.
Preferably, the detection method further include:
The second harmonic component amplitude ratio is judged, if second harmonic component amplitude ratio is less than the second threshold
Value, then continue to monitor to the transformer oil pressure.
The invention also discloses a kind of deformation of transformer winding detection systems, comprising:
Oil pressure obtains module, for after transformer breaks down, obtaining the first oil pressure data of winding；
Functional transformation module obtains institute for carrying out functional transformation to the first oil pressure data and the second oil pressure data
State the corresponding harmonic component of the first oil pressure data and the corresponding harmonic component of the second oil pressure data, wherein second oil
Pressure data are oil pressure data of the winding before the transformer breaks down；
Ratio calculation module, for asking the corresponding harmonic component of the first oil pressure data corresponding with the second oil pressure data
The ratio of harmonic component obtains harmonic component Amplitude Ration；
Threshold value judgment module, for judging the harmonic component Amplitude Ration；
First alarm modules, if determining that the harmonic component Amplitude Ration is more than the first threshold for the threshold value judgment module
Value then issues winding damage alarm.
Preferably, the functional transformation module includes:
Fast Fourier Transform (FFT) unit, for carrying out fast Fourier to the first oil pressure data and the second oil pressure data
Transformation obtains the corresponding second harmonic component of the first oil pressure data and the corresponding second harmonic of the second oil pressure data point
Amount.
Preferably, the oil pressure acquisition module includes:
Oil pressure monitoring unit carries out real-time monitoring for the oil pressure to the winding.
Preferably, the detection system further include:
Second alarm modules, if determining that the harmonic component Amplitude Ration is greater than the second threshold for the threshold value judgment module
Value, and be less than first threshold, then warning may be damaged by issuing winding,
Wherein, the second threshold is less than the first threshold.
The invention discloses a kind of deformation of transformer winding detection method and systems, after being broken down by acquisition transformer
Winding oil pressure data, and functional transformation is carried out to the data, the harmonic component of oil pressure data after failure is obtained, after calculating failure
The ratio between the harmonic component of oil pressure data, obtains harmonic component Amplitude Ration before oil pressure data harmonic component and failure, to Amplitude Ration into
Row judgement judges winding deformation, it is seen then that the present invention is after transformer breaks down, using in the prior art if being more than threshold value
The feature that pressure sensor speed is fast, precision is high and measurement range is big quick and precisely obtains oil pressure data, and takes the data
Functional transformation obtains harmonic component, by calculating the data before comparing failure, obtains harmonic component Amplitude Ration, then to Amplitude Ration into
Row judgement judges winding deformation if being more than threshold value, and calculating process as above uses functional transformation and harmonic component ratio, drop
The error that low oil pressure parameter itself carries is increased simultaneously also by data error caused by external influence factor is reduced
Accuracy in detection, and transformer need not be shut down or shutdown can judge whether winding deforms for a long time, to improve change
The operational efficiency of depressor.
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
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of deformation of transformer winding detection method flow chart disclosed by the embodiments of the present invention；
Fig. 2 is a kind of deformation of transformer winding detection system structure chart disclosed by the embodiments of the present invention.
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 shown in Figure 1 the embodiment of the invention discloses a kind of deformation of transformer winding detection method, including step S1-
S5, in which:
Step S1: after transformer breaks down, the first oil pressure data of winding are obtained.
In the embodiment of the present invention, the first oil pressure data for obtaining winding can be real-time by reading pressure sensor on winding
Data obtain, and mean to carry out deformation detection to winding immediately after transformer breaks down at this time.Furthermore other can also be taken
Mode obtain above-mentioned first oil pressure data, such as oil pressure data in read failure information record mean transformer at this time
It breaks down and deformation detection is carried out to winding after a period of time.
Step S2: functional transformation is carried out to above-mentioned first oil pressure data, obtains the above-mentioned corresponding harmonic wave of first oil pressure data
Component.
In the embodiment of the present invention, functional transformation is carried out to the first oil pressure data obtained in step S1, is changed into corresponding
The data such as frequency domain, time domain, to lack the influence of other external factors, gradually gradually to lack error.
It is understood that the first corresponding harmonic component of oil pressure data can be single number component, such as secondary humorous
Wave component, third-harmonic component can be the set of multiple number components, such as second harmonic component and third-harmonic component.
Step S3: above-mentioned functional transformation is carried out to the second oil pressure data of above-mentioned winding, obtains above-mentioned second oil pressure data
Corresponding harmonic component, wherein above-mentioned second oil pressure data are oil pressure of the above-mentioned winding before above-mentioned transformer breaks down
Data.
In the embodiment of the present invention, the source of the second oil pressure data can be the factory data of transformer winding oil pressure, can also
To be to pass through the pressure data of pressure sensor acquisition on winding when transformer works normally.
It is understood that the second corresponding harmonic component of oil pressure data can be single number component, such as secondary humorous
Wave component, third-harmonic component can be the set of multiple number components, such as second harmonic component and third-harmonic component.
It should be noted that step S2 and step S3 is distinguished without successive, and the sequence that step S2 and step S3 is carried out is not
It influences as a result, i.e. step S2 and step S3 can carry out simultaneously or first carry out step S2 to carry out step S3 or first again
It carries out step S3 and carries out step S2 again.
Step S4: the above-mentioned corresponding harmonic component of first oil pressure data harmonic component corresponding with the second oil pressure data is sought
Ratio obtains harmonic component Amplitude Ration.
In the embodiment of the present invention, since the harmonic component data difference of different number components is larger, standard is calculated in order to improve
Exactness reduces error, obtains in the number component and step S3 of the harmonic component of the first oil pressure data obtained in step S2
The number component of the second corresponding harmonic component of oil pressure data is identical, for example, the harmonic component of the first oil pressure data is secondary humorous
Wave component, then the second corresponding harmonic component of oil pressure data is also second harmonic component.
Step S5: judging above-mentioned harmonic component Amplitude Ration, if above-mentioned harmonic component Amplitude Ration is more than first threshold,
Then issue winding damage alarm.
The invention discloses a kind of deformation of transformer winding detection methods, the winding after being broken down by acquisition transformer
Oil pressure data, and functional transformation is carried out to the data, the harmonic component of oil pressure data after failure is obtained, oil pressure number after failure is calculated
According to the ratio between the harmonic component of oil pressure data before harmonic component and failure, harmonic component Amplitude Ration is obtained, Amplitude Ration is judged,
If being more than threshold value, winding deformation is judged, it is seen then that the present invention is passed after transformer breaks down using pressure in the prior art
The feature that sensor speed is fast, precision is high and measurement range is big quick and precisely obtains oil pressure data, and takes function to become the data
It gets harmonic component in return, by calculating the data before comparing failure, obtains harmonic component Amplitude Ration, then sentence to Amplitude Ration
It is disconnected, if being more than threshold value, judge winding deformation, calculating process as above uses functional transformation and harmonic component ratio, reduces
The error that oil pressure parameter itself carries increases detection simultaneously also by data error caused by external influence factor is reduced
Accuracy, and transformer need not be shut down or shutdown can judge whether winding deforms for a long time, to improve transformer
Operational efficiency.
The embodiment of the invention discloses a kind of specific deformation of transformer winding detection method, relative to a upper embodiment,
The present embodiment has made further instruction and optimization to technical solution.It is specific:
In the embodiment of the present invention, the functional transformation in step S2 and step S3 is Fast Fourier Transform (FFT).
It is understood that according to the principle of Fourier transform, any timing continuously measured or signal can be indicated
For the unlimited superposition of the sine wave signal of different frequency, and the multiplication that Fast Fourier Transform (FFT) can reduce transformation calculates, thus
Accelerate the functional transformation process in step S2 and step S3, to improve detection efficiency.
In the embodiment of the present invention, when the functional transformation in step S2 and step S3 uses Fast Fourier Transform (FFT), then step
The corresponding harmonic component of the first oil pressure data in S2 and the second corresponding harmonic component of oil pressure data in step S3 are two
Order harmonic components.
It is understood that since harmonic component has attenuation characteristic, and the data before the corresponding transformation of triple-frequency harmonics decline
Amount of decrease is spent greatly, and error is larger, in order to improve accuracy in computation, therefore uses second harmonic component.
In the embodiment of the present invention, in order to be measured in real time to winding deformation, the first oil pressure of winding is obtained in step S1
Data specifically include:
Real-time monitoring is carried out to the oil pressure of above-mentioned winding, and after the transformer breaks down, obtains above-mentioned winding
First oil pressure data.
In the embodiment of the present invention, harmonic component Amplitude Ration is judged in step S5 further include:
Above-mentioned second harmonic component amplitude ratio is judged, if above-mentioned second harmonic component amplitude ratio is greater than the second threshold
Value, and be less than first threshold, then warning may be damaged by issuing winding,
Wherein, above-mentioned second threshold is less than above-mentioned first threshold.
In the embodiment of the present invention, detection method further include:
Above-mentioned second harmonic component amplitude ratio is judged, if above-mentioned second harmonic component amplitude ratio is less than the second threshold
Value, then continue to monitor to above-mentioned transformer oil pressure.
It should be noted that when the functional transformation in step S2 and step S3 uses Fast Fourier Transform (FFT), and harmonic wave point
Amount is second harmonic component, and first threshold is preferably arranged to 200%, and second threshold is preferably arranged to 50%, at this point,
If second harmonic component amplitude ratio is greater than 200%, winding damage alarm is issued；
If second harmonic component amplitude ratio is greater than 50% and less than 200%, warning may be damaged by issuing winding；
If second harmonic component amplitude ratio is less than 200%, return step S6, i.e., the oil pressure of above-mentioned winding is carried out real-time
Monitoring.
It is shown in Figure 2 the invention also discloses a kind of deformation of transformer winding detection system, including oil pressure acquisition module
11, functional transformation module 12, ratio calculation module 13, threshold value judgment module 14 and the first alarm modules 15, wherein
Oil pressure obtains module 11, for after transformer breaks down, obtaining the first oil pressure data of winding.
In the embodiment of the present invention, oil pressure obtains module 11 and can be obtained by reading pressure sensor real time data on winding
, mean to carry out deformation detection to winding immediately after transformer breaks down at this time.Furthermore oil pressure acquisition module 11 can also
It takes other modes to obtain above-mentioned first oil pressure data, such as reads in the fault message record in System on Chip/SoC memory block
Oil pressure data mean transformer to break down after a period of time at this time and carry out deformation detection to winding.
Functional transformation module 12 is obtained for carrying out functional transformation to above-mentioned first oil pressure data and the second oil pressure data
The above-mentioned corresponding harmonic component of first oil pressure data and the above-mentioned corresponding harmonic component of second oil pressure data, wherein above-mentioned second
Oil pressure data are oil pressure data of the above-mentioned winding before above-mentioned transformer breaks down.
It is understood that the first oil pressure data or the second corresponding harmonic component of oil pressure data can be single number point
Amount, such as second harmonic component, third-harmonic component can be the set of multiple number components, for example, second harmonic component with
Third-harmonic component.
Ratio calculation module 13, for asking the above-mentioned corresponding harmonic component of first oil pressure data corresponding to the second oil pressure data
Harmonic component ratio, obtain harmonic component Amplitude Ration.
In the embodiment of the present invention, since the harmonic component data difference of different number components is larger, standard is calculated in order to improve
Exactness, reduction error, the number component of the harmonic component of the first oil pressure data and the second corresponding harmonic component of oil pressure data
Number component is identical, for example, the harmonic component of the first oil pressure data is second harmonic component, then the second oil pressure data are corresponding
Harmonic component is also second harmonic component.
Threshold value judgment module 14, for judging above-mentioned harmonic component Amplitude Ration.
First alarm modules 15, if determining that above-mentioned harmonic component Amplitude Ration is more than first for above-mentioned threshold value judgment module 14
Threshold value then issues winding damage alarm.
In the present embodiment, when threshold value judgment module determines that harmonic component Amplitude Ration is more than first threshold, the first alarm modules
It supports following alert methods: being shown in the display area of display screen by text or icon, issues winding by loudspeaker
Damage alarm, by light special sign winding damage signal lamp.
The invention discloses a kind of deformation of transformer winding detection system, including oil pressure obtain module, functional transformation module,
Ratio calculation module, threshold value judgment module and the first alarm modules, after being broken down by oil pressure acquisition module acquisition transformer
Winding oil pressure data, after functional transformation module carries out functional transformation to the data, obtain the harmonic wave point of oil pressure data after failure
Amount, ratio calculation module calculate the ratio between the harmonic component of oil pressure data before oil pressure data harmonic component and failure after failure, obtain
Harmonic component Amplitude Ration, threshold value judgment module judge Amplitude Ration, if being more than threshold value, the first alarm modules issue winding
Damage alarm, it is seen then that the present invention is after transformer breaks down, using pressure sensor speed is fast in the prior art, precision is high
And the feature that measurement range is big, oil pressure data are quick and precisely obtained, and take functional transformation to obtain harmonic component the data, led to
The data before calculating comparison failure are crossed, obtain harmonic component Amplitude Ration, then judge Amplitude Ration, if being more than threshold value, are sentenced
Disconnected winding deformation, calculating process as above use functional transformation and harmonic component ratio, reduce what oil pressure parameter itself carried
Error increases accuracy in detection simultaneously also by data error caused by external influence factor is reduced, and transformer without
Must shut down or shut down for a long time can judge whether winding deforms, to improve the operational efficiency of transformer.
The embodiment of the invention also discloses a kind of specific deformation of transformer winding detection systems, implement relative to upper one
Example, the present embodiment have made further instruction and optimization to technical solution.It is specific:
In the present embodiment, functional transformation module includes:
Fast Fourier Transform (FFT) unit, for carrying out fast Fourier to above-mentioned first oil pressure data and the second oil pressure data
Transformation obtains the corresponding second harmonic component of above-mentioned first oil pressure data and the above-mentioned corresponding second harmonic of second oil pressure data point
Amount.
It is understood that according to the principle of Fourier transform, any timing continuously measured or signal can be indicated
For the unlimited superposition of the sine wave signal of different frequency, and the multiplication that Fast Fourier Transform (FFT) can reduce transformation calculates, thus
The functional transformation process for accelerating functional transformation module, to improve detection efficiency.Simultaneously as harmonic component has decaying special
Property, and the data attenuation amplitude before the corresponding transformation of triple-frequency harmonics is excessive, error is larger, in order to improve accuracy in computation, therefore
Using second harmonic component.
Oil pressure in the embodiment of the present invention obtains module
Oil pressure monitoring unit carries out real-time monitoring for the oil pressure to above-mentioned winding.
It is understood that oil pressure monitoring unit can also be located at the table in assembly housing located immediately at winding surface
Face.Meanwhile oil pressure detection unit can be specifically made of multiple pressure sensing probes for being evenly distributed on winding surface, it is each to pop one's head in
The average value of acquired oil pressure is oil pressure numerical value acquired in oil pressure monitoring unit.
In order to be explained in precise term in detail to winding deformation situation, the embodiment of the present invention further comprises:
Second alarm modules, if determining that above-mentioned harmonic component Amplitude Ration is greater than the second threshold for above-mentioned threshold value judgment module
Value, and be less than first threshold, then warning may be damaged by issuing winding,
Wherein, above-mentioned second threshold is less than above-mentioned first threshold.
In the present embodiment, when threshold value judgment module determines that harmonic component Amplitude Ration is greater than second threshold, and less than the first threshold
Value, the second alarm modules support following alert methods: being shown, led to by text or icon in the display area of display screen
Cross loudspeaker issue winding may damage alarm, by light special sign the signal lamp that may damage of winding.
It should be noted that when including Fast Fourier Transform (FFT) unit in functional transformation module, i.e., to the first oil pressure data
Fast Fourier Transform (FFT) is carried out with the second oil pressure data, obtains corresponding second harmonic component, first threshold is preferably arranged to
200%, second threshold is preferably arranged to 50%, at this point,
If second harmonic component amplitude ratio is greater than 200%, the first alarm modules issue winding and damage alarm；
If second harmonic component amplitude ratio is greater than 50% and can energy loss less than 200%, second alarm modules sending winding
Wound warning；
If second harmonic component amplitude ratio less than 200%, oil pressure obtain module in oil pressure monitoring unit continue to around
The oil pressure of group carries out real-time monitoring.
It is understood that the winding that winding damage alarm and the second alarm modules that the first alarm modules issue issue can
Warning can be damaged, alarm can be given by the same loudspeaker, and can show in same display area.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
A kind of deformation of transformer winding detection method provided by the present invention and system are described in detail above, this
Apply that a specific example illustrates the principle and implementation of the invention in text, the explanation of above example is only intended to
It facilitates the understanding of the method and its core concept of the invention；At the same time, for those skilled in the art, think of according to the present invention
Think, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification should not be construed as pair
Limitation of the invention.
Claims (10)
1. a kind of deformation of transformer winding detection method characterized by comprising
After transformer breaks down, the first oil pressure data of winding are obtained；
Functional transformation is carried out to the first oil pressure data, obtains the corresponding harmonic component of the first oil pressure data；
The functional transformation is carried out to the second oil pressure data of the winding, obtains the corresponding harmonic wave of the second oil pressure data point
Amount, wherein the second oil pressure data are oil pressure data of the winding before the transformer breaks down；
The ratio for seeking the corresponding harmonic component of the first oil pressure data harmonic component corresponding with the second oil pressure data, obtains humorous
Wave component Amplitude Ration；
The harmonic component Amplitude Ration is judged, if the harmonic component Amplitude Ration is more than first threshold, issues winding
Damage alarm.
2. detection method according to claim 1, which is characterized in that the functional transformation is Fast Fourier Transform (FFT).
3. detection method according to claim 2, which is characterized in that the corresponding harmonic component of the first oil pressure data and
The corresponding harmonic component of second oil pressure data is second harmonic component.
4. detection method according to claim 3, which is characterized in that the first oil pressure data for obtaining winding are specifically wrapped
It includes:
Real-time monitoring is carried out to the oil pressure of the winding, and after the transformer breaks down, obtains the described of the winding
First oil pressure data.
5. detection method according to claim 4, which is characterized in that further include:
The second harmonic component amplitude ratio is judged, if second harmonic component amplitude ratio is greater than second threshold, and
Less than first threshold, then warning may be damaged by issuing winding,
Wherein, the second threshold is less than the first threshold.
6. detection method according to claim 5, which is characterized in that further include:
The second harmonic component amplitude ratio is judged, if second harmonic component amplitude ratio is less than second threshold,
The transformer oil pressure is continued to monitor.
7. a kind of deformation of transformer winding detection system characterized by comprising
Oil pressure obtains module, for after transformer breaks down, obtaining the first oil pressure data of winding；
Functional transformation module obtains described for carrying out functional transformation to the first oil pressure data and the second oil pressure data
The corresponding harmonic component of one oil pressure data and the corresponding harmonic component of the second oil pressure data, wherein the second oil pressure number
According to the oil pressure data for being the winding before the transformer breaks down；
Ratio calculation module, for seeking the corresponding harmonic component of the first oil pressure data harmonic wave corresponding with the second oil pressure data
The ratio of component obtains harmonic component Amplitude Ration；
Threshold value judgment module, for judging the harmonic component Amplitude Ration；
First alarm modules, if determining that the harmonic component Amplitude Ration is more than first threshold for the threshold value judgment module,
It issues winding and damages alarm.
8. detection system according to claim 7, which is characterized in that the functional transformation module includes:
Fast Fourier Transform (FFT) unit, for carrying out fast Fourier change to the first oil pressure data and the second oil pressure data
It changes, obtains the corresponding second harmonic component of the first oil pressure data and the corresponding second harmonic of the second oil pressure data point
Amount.
9. detection system according to claim 8, which is characterized in that the oil pressure obtains module and includes:
Oil pressure monitoring unit carries out real-time monitoring for the oil pressure to the winding.
10. detection system according to claim 9, which is characterized in that further include:
Second alarm modules, if determine that the harmonic component Amplitude Ration is greater than second threshold for the threshold value judgment module, and
Less than first threshold, then warning may be damaged by issuing winding,
Wherein, the second threshold is less than the first threshold.
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| CN111537919B (en) * | 2020-05-14 | 2022-04-15 | 莫毓昌 | Transformer fault diagnosis method based on voiceprint characteristics |
| CN112098906B (en) * | 2020-09-07 | 2022-03-08 | 淮南万泰电子股份有限公司 | Winding performance detection system of all-in-one machine |
| CN114485540A (en) * | 2022-01-20 | 2022-05-13 | 西安交通大学 | Method and system for rapidly acquiring deformation degree and position of transformer winding |
| CN115343663A (en) * | 2022-08-12 | 2022-11-15 | 保定天威顺达变压器有限公司 | Transformer winding monitoring device |
| CN117493760B (en) * | 2023-10-23 | 2024-05-14 | 华中科技大学 | Leakage current data cleaning method for resisting strong electromagnetic interference |
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