CN207181589U - It is a kind of to be used for the device being monitored powered to deformation of transformer winding - Google Patents
It is a kind of to be used for the device being monitored powered to deformation of transformer winding Download PDFInfo
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- CN207181589U CN207181589U CN201720978632.4U CN201720978632U CN207181589U CN 207181589 U CN207181589 U CN 207181589U CN 201720978632 U CN201720978632 U CN 201720978632U CN 207181589 U CN207181589 U CN 207181589U
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Abstract
It is used for the device being monitored powered to deformation of transformer winding the utility model discloses a kind of, described device includes：Driving source, for receiving the swept-sine voltage signal of main controller output, and exported after carrying out power amplification to pumping signal injection sensor；Pumping signal injection sensor is stated, for according to the swept-sine voltage signal, producing induced potential in Transformer Winding by way of magnetic coupling；Response signal measurement sensor, for measuring the induced potential in frequency sweep response current signal caused by Transformer Winding both ends, and by the response current signal output to main controller；Main controller, for the frequency response curve according to the swept-sine voltage signal and corresponding frequency sweep response current signal acquisition Transformer Winding；Shape situation determining unit, for being diagnosed based on the diagnostic method in the standards of DLT911 2004 to the frequency response curve, determine the deformation of Transformer Winding；Alarm unit, alarm is sent for the deformation according to Transformer Winding.
Description
Technical field
Transformer technology field is the utility model is related to, and is used to become Transformer Winding more particularly, to one kind
The powered device being monitored of shape.
Background technology
Deformation of transformer winding refers to that in the presence of electric power and mechanical force size or the shape generation of winding are irreversible
Change.It includes the change of axially and radially size, device body displacement, winding distortion, bulge and turn-to-turn short circuit etc..In addition, around
Group deformation also has cumulative effect, i.e.,：After first short circuit rush of current is subjected to, Transformer Winding is not damaged immediately, only
Less permanent deformation, but cause its insulating properties and mechanical performance to decline.In short-circuit current rush next time, can cause around
, there is vicious circle in group deformation aggravation.Thus the transformer of winding deformation is a kind of accident potential, if being run into again during operation
Larger overcurrent effect, then may occur the major accidents such as transformer damage.Transformer phase winding deformation failure at present,
One of major failure as transformer, therefore, it is necessary to deformation detection is carried out to Transformer Winding and diagnoses its deformation extent, according to
This carries out the preventative maintenance of transformer.
For this reason, it may be necessary to study and define the feasible detection method of science to realize the detection of deformation of transformer winding, in the world
Many countries have put into substantial amounts of energy in the research work all to deformation of transformer winding detection method, according to transformer whether
Stop transport, point on-line monitoring and offline inspection.Wherein, the most frequently used winding deformation monitoring method is method of frequency response method.Transformer Winding is sent out
After the shape that changes, the parameter such as the inductance of winding, direct-to-ground capacitance, turn-to-turn capacitance can change.The operation principle of method of frequency response method is exactly
By the frequency response curve of winding, reflect the change of the distributed inductance and distribution capacity of winding, and then judge whether winding becomes
Shape.Under the voltage effect of upper frequency, each winding of transformer can be considered one by linear resistance, inductance (mutual inductance),
The passive linear two-port network that electric capacity equal distribution parameter is formed, its bulk properties can be described by transfer function H (j ω).If around
Group deforms, and the parameter such as distributed inductance, electric capacity inside winding necessarily changes, and causes its equivalent network transfer function H (j
Zero point and limit ω) changes, and the frequency response characteristic of network is changed.Frequency band range involved by method of frequency response method,
1kHz~1000kHz is defined as in China rower DL/T911.Some scholars think that the lower frequency limit of method of frequency response method can expand to
10Hz, upper limiting frequency can expand to 10MHz.Transformer Winding equivalent model and corresponding fundamental measurement loop are available such as Fig. 1
Shown expression：Wherein, L represents inductance between coil cake, and K represents longitudinal direction (between cake or turn-to-turn) electric capacity between coil, and C represents coil pair
Ground electric capacity.Transformer Winding, which is surveyed, using method of frequency response method can obtain a class frequency and the corresponding numerical value responded, i.e. output end and power end
The ratio of voltage, is generally represented with logarithmic form：
H (ω)=20log [| V0(jω)|/|Vi(jω)|] (1)
Wherein, │ Vo (j ω) │ and │ Vi (j ω) │ represent frequency as ω when, output voltage with input supply voltage peak
Value or virtual value.It using ω as transverse axis, is being in the reference axis of the longitudinal axis with H (ω) that these respective values, which are retouched, will obtain a song
Line, our this curve is referred to as frequency response curve.
Professional standard DLT911-2004 clearly proposes the diagnostic method of method of frequency response method detection deformation of transformer winding.With frequency
Rate response analysis method judges deformation of transformer winding, mainly carries out vertical or horizontal comparison to the amplitude-frequency response characteristic of winding,
And consider transformer by the situation of short-circuit impact, transformer device structure, electrical test and dissolved gas analysis etc. because
Element.According to the size of coefficient correlation, it can more intuitively reflect the change of Transformer Winding amplitude-frequency response characteristic, be usually implemented as
Judge the supplementary means of deformation of transformer winding.
The existing deformation of transformer winding monitoring device based on method of frequency response method be only applicable to the transformer stopped transport offline, it is necessary to
Transformer and power network are disconnected, from one end of Transformer Winding injection swept frequency excitation signal, (frequency is stepped up or reduced just
String voltage signal), measure response signal from the other end of winding；Then by calculate response signal and pumping signal amplitude it
Than (that is, one kind in transmission function), frequency response curve is obtained；Finally, examined by lateral comparison, longitudinal comparison or peak valley frequency
The methods of disconnected, judges Transformer Winding with the presence or absence of deformation.
The main controller of the existing deformation of transformer winding monitoring device based on method of frequency response method is that a stage body accumulates larger instrument,
Rather than a piece of IC chip.The typical wiring mode of monitoring device is as shown in Fig. 2 winding deformation tester produces sine
Swept frequency excitation voltage, is applied on the neutral point of Transformer Winding；What instrument was applied by input measurement impedance monitoring simultaneously
Driving voltage amplitude；Winding deformation tester is by exporting measurement impedance detection driving voltage at Transformer Winding high-voltage terminal end
Response voltage signal；Winding deformation tester only has a response signal Measurement channel, can only detect a winding every time, such as
Shown in Fig. 2.Fig. 2 is the connected mode of existing that monitoring device of deformation of transformer winding.For Three-Phase Transformer winding, it is necessary to
Change wiring to measure successively, waste time and energy.
There is scholar to propose application on site method of frequency response method in recent years.The subject matter of application on site method of frequency response method is the filling of signal
With the elimination of external equipment.Foreign scholar proposes, from bottom shielding of bushing lead-out wire injection swept-frequency signal, to give voltage-type driving source
The circuit and its corresponding protection impedance for accessing bottom shielding of bushing are formed.But the Transformer Bushing Tap of on-line operation must connect
Ground.For the transformer of on-line operation, it is nearly impossible from bottom shielding of bushing injection swept-frequency signal.In addition, it yet there are no pass
In the achievement in research for the influence for how eliminating external equipment.
Therefore, it is necessary to which a kind of deformation of transformer winding monitoring device, is supervised online with realizing to deformation of transformer winding
Survey.
The content of the invention
The utility model provide it is a kind of be used for the device being monitored powered to deformation of transformer winding, with solve how
The problem of being monitored on-line to deformation of transformer winding.
In order to solve the above problems, the utility model provides one kind and is used for be monitored powered to deformation of transformer winding
Device, described device includes：Driving source, pumping signal injection sensor, response signal measurement sensor, main controller, deformation
Situation determining unit and alarm unit,
The driving source, for receiving the swept-sine voltage signal of main controller output, the swept-sine voltage is believed
Number power carry out power amplification after output to pumping signal inject sensor；
The pumping signal injects sensor, is connected with the driving source by signal cable, for being swept according to
Frequency sine voltage signal, produces induced potential by way of magnetic coupling in Transformer Winding；
The response signal measurement sensor, it is connected with main controller by signal cable, for measuring the induced electricity
Gesture is in frequency sweep response current signal caused by Transformer Winding both ends, and by the response current signal output to main controller；
The main controller, for according to the swept-sine voltage signal and the change of corresponding frequency sweep response current signal acquisition
The frequency response curve of depressor winding；
The deformation determining unit, for bent to the frequency response based on the diagnostic method in DLT911-2004 standards
Line is diagnosed, and determines the deformation of Transformer Winding；
The alarm unit, alarm is sent for the deformation according to Transformer Winding.
Preferably, wherein the frequency of the swept-sine voltage signal is 1kHz-1MHz, step-length 1kHz；Power amplification
The frequency of front and rear signal is consistent with waveform, and the amplitude of the swept-sine voltage signal after amplification is 60V, power is up to 200W.
Preferably, wherein pumping signal injection sensor is the rogowski coil with magnetic core, the frequency sweep
Sine voltage signal is applied to the coil both ends of pumping signal injection sensor by signal cable.
Preferably, the response signal measurement sensor is the rogowski coil type current sensor with magnetic core.
Preferably,
It is described when the pumping signal injects sensor sleeve outside Transformer Winding neutral lead ferrule boot
Response signal measurement sensor is enclosed on outside the high-voltage leading-out wire ferrule boot of Transformer Winding, high for measuring transformer winding
Press the frequency sweep response current signal on lead-out wire；
When the pumping signal injects sensor sleeve outside Transformer Winding high-voltage terminal ferrule boot, the response
Signal measurement sensor sleeve is outside Transformer Winding neutral bushing root and/or is enclosed on the high-voltage leading-out wire of Transformer Winding
Outside ferrule boot, for the frequency sweep response current signal on measuring transformer winding neutral ground line.
Preferably, the response signal measurement sensor at least 4, at least 1 is enclosed on Transformer Winding neutral bushing
Outside root, outside at least 3 high-voltage leading-out wire ferrule boots for being enclosed on Three-Phase Transformer winding, measuring transformer winding high voltage
Frequency sweep response current signal on lead-out wire.
Preferably, wherein the main controller also includes：Analog-to-digital conversion module and signal of change module,
The analog-to-digital conversion module, for the swept-sine voltage signal and corresponding frequency sweep response current signal to be divided
Swept-sine voltage digital signal and corresponding frequency sweep response current data signal are not converted to；
The signal of change module, for the swept-sine voltage digital signal and corresponding frequency sweep response current number
Word signal calculates frequency spectrum after being filtered processing.
Preferably, wherein main controller also includes：Network communication module,
The network communication module, for the frequency response curve data to be sent into external equipment by network interface.
The injection of pumping signal in the utility model and the measurement of response signal pass through rogowski coil
Carry out, it is not necessary to be directly connected to Transformer Winding so that transformer high-voltage winding is in high voltage, the operation shape of high current
State, and winding deformation monitoring device is in low-potential state, ensure that proposed winding deformation monitoring device can be applied to
The power transformer of on-line operation, and then realize the real-time detection of the winding deformation situation of on-line operation transformer.For offline
The power transformer of stoppage in transit, as long as simply providing Transformer Winding two-terminal-grounding to loop for electric current, so as to be stopped transport to offline
Winding deformation of power transformer be monitored.
Brief description of the drawings
By reference to the following drawings, illustrative embodiments of the present utility model can be more fully understood by：
Fig. 1 is the Transformer Winding n rank lumped parameter winding models and frequency response measurement according to the utility model embodiment
The schematic diagram in loop；
Fig. 2 is the cut-away drawing of existing deformation of transformer winding monitoring device；
Fig. 3 is to be used for the device 300 being monitored powered to deformation of transformer winding according to the utility model embodiment
Structural representation；
Fig. 4 is to be used for showing for the device being monitored powered to deformation of transformer winding according to the utility model embodiment
Illustration；
Fig. 5 is the schematic diagram used according to the pumping signal of the utility model embodiment injection sensor；
Fig. 6 sweeps for the deformation of transformer winding inline diagnosis based on Frequency Response according to the utility model embodiment
The schematic diagram of frequency signal injecting principle.
Embodiment
Illustrative embodiments of the present utility model are introduced with reference now to accompanying drawing, however, the utility model can use many
Different forms is implemented, and is not limited to embodiment described herein, there is provided these embodiments are in order at large and complete
Open the utility model entirely, and fully pass on the scope of the utility model to person of ordinary skill in the field.For
Term in the illustrative embodiments being illustrated in the accompanying drawings is not to restriction of the present utility model.In the accompanying drawings, identical
Cells/elements use identical reference.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has to person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 3 is to be used for the device 300 being monitored powered to deformation of transformer winding according to the utility model embodiment
Structural representation.
As shown in figure 3, the note of the pumping signal for the device 300 being monitored powered to deformation of transformer winding
Direct electrical connection need not be had with Transformer Winding by entering the measurement with response signal, so as to accomplish transformer high-voltage around
Group is in high voltage, the running status of high current, and winding deformation monitoring device is in low-potential state, and therefore, this practicality is new
The winding deformation monitoring device of type embodiment can be applied to the power transformer of on-line operation, and then realize on-line operation
The real-time detection of the winding deformation situation of transformer.
The winding deformation monitoring device of the utility model real-time mode is for the power transformer stopped transport offline, as long as simply
Ground provides Transformer Winding two-terminal-grounding to loop for electric current, can be applied to the power transformer stopped transport offline.
It is described to include for the device 300 being monitored powered to deformation of transformer winding：Driving source 301, excitation
Signal injection sensor 302, response signal measurement sensor 303, main controller 304, deformation determining unit 305 and alarm are single
Member 306.
Preferably, the driving source 301, for receiving the swept-sine voltage signal of main controller output, by the frequency sweep
Output to pumping signal injects sensor after the power of sine voltage signal carries out power amplification.Preferably, wherein the excitation
Signal injection sensor is the rogowski coil with magnetic core, and the swept-sine voltage signal is applied by signal cable
At the coil both ends of pumping signal injection sensor.Preferably, wherein the frequency of the swept-sine voltage signal is 1kHz-
1MHz, step-length 1kHz；The frequency of signal is consistent with waveform before and after power amplification, the width of the swept-sine voltage signal after amplification
It is up to 200W to be worth for 60V, power.
Preferably, the pumping signal injection sensor 302, is connected by signal cable with the driving source, is used for
According to the swept-sine voltage signal, induced potential is produced in Transformer Winding by way of magnetic coupling.
Preferably, the response signal measurement sensor 303, it is connected with main controller by signal cable, for measuring
The induced potential is in frequency sweep response current signal caused by Transformer Winding both ends, and by the response current signal output extremely
Main controller.
Preferably, when the pumping signal injects sensor sleeve outside Transformer Winding neutral lead ferrule boot
When, the response signal measurement sensor is enclosed on outside the high-voltage leading-out wire ferrule boot of Transformer Winding, for measuring transformation
Frequency sweep response current signal on device winding high voltage lead-out wire；
When the pumping signal injects sensor sleeve outside Transformer Winding high-voltage terminal ferrule boot, the response
Signal measurement sensor sleeve is outside Transformer Winding neutral bushing root and/or is enclosed on the high-voltage leading-out wire of Transformer Winding
Outside ferrule boot, for the frequency sweep response current signal on measuring transformer winding neutral ground line.
Preferably, the main controller 304, for according to the swept-sine voltage signal and corresponding frequency sweep response current
The frequency response curve of signal acquisition Transformer Winding.
Preferably, wherein the main controller also includes：Analog-to-digital conversion module and signal of change module,
The analog-to-digital conversion module, for the swept-sine voltage signal and corresponding frequency sweep response current signal to be divided
Swept-sine voltage digital signal and corresponding frequency sweep response current data signal are not converted to；
The signal of change module, for the swept-sine voltage digital signal and corresponding frequency sweep response current number
Word signal calculates frequency spectrum after being filtered processing.
Preferably, wherein main controller also includes：Network communication module,
The network communication module, for the frequency response curve data to be sent into external equipment by network interface；
Preferably, the deformation determining unit 305, for based on the diagnostic method pair in DLT911-2004 standards
The frequency response curve is diagnosed, and determines the deformation of Transformer Winding.
Preferably, the alarm unit 306, alarm is sent for the deformation according to Transformer Winding
Fig. 4 is to be used for showing for the device being monitored powered to deformation of transformer winding according to the utility model embodiment
Illustration.As shown in figure 4, in embodiment of the present utility model, described device includes：Driving source (1), pumping signal injection pass
Sensor (2), response signal measurement sensor (3), main controller (4), signal cable (5), signal cable (6), deformation determine
Unit (13) and alarm unit (14).
Main controller (4) output frequency is stepped up to 1MHz, the swept-sine voltage signal that step-length is 1kHz from 1kHz, should
Signal is energized source (1) and receives and carry out power amplification；The frequency and ripple of the swept-sine voltage signal of driving source (1) output
Shape keeps constant with carrying out the input signal of master (4), and amplitude is up to 60V, and power is up to 200W；Driving source (1) exports
High power sweep sine voltage signal pumping signal be applied to by signal cable (5) injected on sensor (2)；Pumping signal
Injection sensor (2) produces induced potential by way of magnetic coupling in Transformer Winding；Response signal measurement sensor
(3) induced potential is measured in the current generated signal in Transformer Winding both ends；The output letter of response signal measurement sensor (3)
Number main controller (4) is entered by signal cable (6), gathered and handled by main controller (4)；Main controller (4) synchronism output frequency sweep is just
String voltage signal and the output signal for gathering response signal measurement sensor (3), and processing and frequency spectrum calculate after filtering, obtain
The frequency response curve of winding, and frequency response curve data are sent on computer by network communication interface and is shown and is stored.
Deformation determining unit (13), for being examined based on the diagnostic method in DLT911-2004 standards the frequency response curve
It is disconnected, determine the deformation of Transformer Winding.Alarm unit (14), police is sent for the deformation according to Transformer Winding
Report.Maintainer is prompted to carry out on-call maintenance.
Main controller is by swept-frequency signal generation module (7), four analog-to-digital conversion modules (8), four digital filterings and frequency
Computing module (9), coefficient correlation computing module (12), network communication module (10), the circuit of crystal oscillating circuit module (11) composition
System.The circuit of these modules realizes that technology is highly developed, can directly use, and easily realizes.Wherein, swept-frequency signal
Generation module, for exporting swept-sine voltage signal；The analog-to-digital conversion module is respectively used to the swept-sine electricity of collection
The output signal of pressure signal and the response signal measurement sensor of collection is converted to data signal；The digital filtering and frequency meter
Module is calculated, for number corresponding to the output signal of the swept-sine voltage signal and the response signal measurement sensor of collection
Word signal is filtered processing and frequency spectrum calculates；The coefficient correlation computing module, for calculating two frequency responses of different time
The coefficient correlation of curve；The network communication module, for the frequency response curve data to be sent to by network communication interface
External device is shown and stored；The crystal oscillating circuit module, for providing the clock frequency required for main controller.
Fig. 5 is the schematic diagram used according to the pumping signal of the utility model embodiment injection sensor.Such as Fig. 5 institutes
Show, pumping signal injection sensor (2) is a rogowski coil for carrying magnetic core, is enclosed on Transformer Winding neutral point and draws
Outside outlet casing tube root；The high power sweep sine voltage signal of driving source (1) output is applied to sharp by signal cable (5)
Encourage the coil both ends of signal injection sensor (2).Response signal measurement sensor (3), it is the Rogovski line with magnetic core
Ring current sensor, share four.Wherein, three are respectively fitted over transformer A phase windings, B phase windings and C phase windings, and totally three
Outside the high-voltage leading-out wire ferrule boot of phase winding, for measuring the frequency sweep response current signal on winding high voltage lead-out wire, separately
One is served only for being enclosed on outside Transformer Winding neutral bushing root, measures the frequency sweep response current on winding neutral ground line
Signal.
Fig. 6 sweeps for the deformation of transformer winding inline diagnosis based on Frequency Response according to the utility model embodiment
The schematic diagram of frequency signal injecting principle.Response signal measurement sensor (3) is to utilize the rogowski coil type electricity with magnetic core
Flow sensor measures current signal, and its principle and method are highly developed.And pumping signal injection sensor (2) utilizes Luo Guofu
Coupled voltages, the principle of current signal are as shown in Figure 6 in this lubber ring conductor 801：When ZS represents the transformer of monitoring on-line operation
The impedance for the external equipment being directly electrically connected with transformer high-voltage lead-out wire.In the coil and Transformer Winding of sensor (2)
Magnetic coupling (mutual inductance) be present between property line lead-out wire, equivalent to primary side n circles, the transformer of the circle of secondary 1.In actual applications,
Rogowski coil can strengthen coupling effect using high permeability magnetic core, and the signal of injection is stronger.Driving sourceFor voltage source,
Electric current is produced in coil by current-limiting resistance R0Caused magnetic field is on secondary (that is, the high-voltage leading-out wire of winding)
Induce electromotive forceWith electric currentWithBetween relation can express (2) with the transmission function of Rogowski coil, be true
Relation that is fixed, can determining in advance, the calculation formula of transmission function (2) are：
Wherein, L is the inductance of coil；Mutual inductances of the M between coil and winding high voltage lead-out wire.
The utility model is described by reference to a small amount of embodiment.However, it is known in those skilled in the art,
Limited as subsidiary Patent right requirement, except the utility model other embodiments disclosed above equally fall
In the scope of the utility model.
Normally, all terms used in the claims are all solved according to them in the usual implication of technical field
Release, unless clearly being defined in addition wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.
Claims (8)
1. a kind of be used for the device being monitored powered to deformation of transformer winding, it is characterised in that described device includes：Excitation
Source, pumping signal injection sensor, response signal measurement sensor and main controller, deformation determining unit and alarm unit,
The driving source, for receiving the swept-sine voltage signal of main controller output, by the swept-sine voltage signal
Output to pumping signal injects sensor after power carries out power amplification；
The pumping signal injects sensor, is connected with the driving source by signal cable, for according to the frequency sweep just
String voltage signal, produces induced potential by way of magnetic coupling in Transformer Winding；
The response signal measurement sensor, it is connected with main controller by signal cable, is existed for measuring the induced potential
Frequency sweep response current signal caused by Transformer Winding both ends, and by the response current signal output to main controller；
The main controller, for according to the swept-sine voltage signal and corresponding frequency sweep response current signal acquisition transformer
The frequency response curve of winding；
The deformation determining unit, for being entered based on the diagnostic method in DLT911-2004 standards to the frequency response curve
Row diagnosis, determine the deformation of Transformer Winding；
The alarm unit, alarm is sent for the deformation according to Transformer Winding.
2. device according to claim 1, it is characterised in that the frequency of the swept-sine voltage signal is 1kHz-
1MHz, step-length 1kHz；The frequency of signal is consistent with waveform before and after power amplification, the width of the swept-sine voltage signal after amplification
It is up to 200W to be worth for 60V, power.
3. device according to claim 1, it is characterised in that the pumping signal injection sensor is sieve with magnetic core
Fruit Paderewski coil, the swept-sine voltage signal are applied to the coil two of pumping signal injection sensor by signal cable
End.
4. device according to claim 1, it is characterised in that the response signal measurement sensor is sieve with magnetic core
Fruit Paderewski coil form current sensor.
5. device according to claim 1, it is characterised in that
When the pumping signal injects sensor sleeve outside Transformer Winding neutral lead ferrule boot, the response
Signal measurement sensor sleeve is drawn outside the high-voltage leading-out wire ferrule boot of Transformer Winding for measuring transformer winding high voltage
Frequency sweep response current signal in outlet；
When the pumping signal injects sensor sleeve outside Transformer Winding high-voltage terminal ferrule boot, the response signal
Measurement sensor is enclosed on outside Transformer Winding neutral bushing root and/or is enclosed on the high-voltage leading-out wire sleeve pipe of Transformer Winding
Outside root, for the frequency sweep response current signal on measuring transformer winding neutral ground line.
6. device according to claim 1, it is characterised in that the response signal measurement sensor at least 4, at least 1
Only it is enclosed on outside Transformer Winding neutral bushing root, at least 3 high-voltage leading-out wire sleeve pipes for being enclosed on Three-Phase Transformer winding
Outside root, the frequency sweep response current signal on measuring transformer winding high voltage lead-out wire.
7. device according to claim 1, it is characterised in that the main controller also includes：Analog-to-digital conversion module and signal
Computing module,
The analog-to-digital conversion module, for the swept-sine voltage signal and corresponding frequency sweep response current signal to be turned respectively
It is changed to swept-sine voltage digital signal and corresponding frequency sweep response current data signal；
The signal of change module, for the swept-sine voltage digital signal and corresponding frequency sweep response current numeral letter
Frequency spectrum is calculated after number being filtered processing.
8. device according to claim 1, it is characterised in that the main controller also includes：Network communication module,
The network communication module, for the frequency response curve data to be sent into external equipment by network interface.
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| CN201720978632.4U CN207181589U (en) | 2017-08-07 | 2017-08-07 | It is a kind of to be used for the device being monitored powered to deformation of transformer winding |
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| CN201720978632.4U CN207181589U (en) | 2017-08-07 | 2017-08-07 | It is a kind of to be used for the device being monitored powered to deformation of transformer winding |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390081A (en) * | 2017-08-07 | 2017-11-24 | 华北电力大学 | It is a kind of to be used for the device and method being monitored powered to deformation of transformer winding |
| CN111610469A (en) * | 2020-04-21 | 2020-09-01 | 中国电力科学研究院有限公司 | Three-phase synchronous frequency response detection method and system for star-connected transformer winding deformation |
| CN114924209A (en) * | 2022-04-18 | 2022-08-19 | 云南电网有限责任公司电力科学研究院 | Transformer winding deformation monitoring system and method |
| 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 |
| CN116736194A (en) * | 2023-06-09 | 2023-09-12 | 国网江苏省电力有限公司营销服务中心 | Detector applicable to various transformer windings and chassis |
-
2017
- 2017-08-07 CN CN201720978632.4U patent/CN207181589U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107390081A (en) * | 2017-08-07 | 2017-11-24 | 华北电力大学 | It is a kind of to be used for the device and method being monitored powered to deformation of transformer winding |
| CN111610469A (en) * | 2020-04-21 | 2020-09-01 | 中国电力科学研究院有限公司 | Three-phase synchronous frequency response detection method and system for star-connected transformer winding deformation |
| CN111610469B (en) * | 2020-04-21 | 2023-05-16 | 中国电力科学研究院有限公司 | Three-phase synchronous frequency response detection method and system for star transformer winding deformation |
| CN114924209A (en) * | 2022-04-18 | 2022-08-19 | 云南电网有限责任公司电力科学研究院 | Transformer winding deformation monitoring system and method |
| 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 |
| CN116736194A (en) * | 2023-06-09 | 2023-09-12 | 国网江苏省电力有限公司营销服务中心 | Detector applicable to various transformer windings and chassis |
| CN116736194B (en) * | 2023-06-09 | 2024-02-27 | 国网江苏省电力有限公司营销服务中心 | Detector applicable to various transformer windings and chassis |
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