CN205809250U - On-load tap-changer of transformer vibration characteristics detecting system - Google Patents
On-load tap-changer of transformer vibration characteristics detecting system Download PDFInfo
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- CN205809250U CN205809250U CN201620766417.3U CN201620766417U CN205809250U CN 205809250 U CN205809250 U CN 205809250U CN 201620766417 U CN201620766417 U CN 201620766417U CN 205809250 U CN205809250 U CN 205809250U
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Abstract
This utility model relates to a kind of on-load tap-changer of transformer vibration characteristics detecting system, including: piezoelectric acceleration transducer, magnetic clasp, a/d converter and controller；Piezoelectric acceleration transducer is adsorbed on the shell of on-load tap-changer of transformer by magnetic clasp, and described piezoelectric transducer connects controller by a/d converter；The vibration signal of described piezoelectric acceleration transducer sensor transformer on-load voltage regulating switch, sends vibration signal to a/d converter, and a/d converter sends to controller after vibration signal is converted to digital signal；Piezoelectric acceleration transducer is adsorbed on the shell of on-load tap-changer of transformer by it by magnetic clasp, obtain the vibration signal of on-load tap-changer of transformer in real time, and utilize a/d converter to send after being converted to the digital signal that above-mentioned vibration signal is corresponding to controller to carry out the detection of on-load tap-changer of transformer vibration characteristics, corresponding on-load tap-changer of transformer can be detected in real time, improve the ageing of detection.
Description
Technical field
This utility model relates to technical field of electric power, particularly relates to a kind of on-load tap-changer of transformer vibration characteristics inspection
Examining system.
Background technology
On-load voltage regulating switch is as the parts of action frequent in transformator, and its reliability directly determines that can transformator pacify
Full reliability service.The test of on-load voltage regulating switch switching waveform or coherent detection work are big events, pass through to be examined
The switching waveform surveyed can be seen that switching switch can correct operation, thus judge whether on-load voltage regulating switch exists motor drive mechanism
The faults such as the deformation of remarkable action, insulating cylinder, contact burning, drive shafts fracture.
In traditional scheme, generally just on-load voltage regulation to above-mentioned transformator at transformer overhaul or time dependent failure occurs
Switch carries out coherent detection, easily affects the ageing of on-load tap-changer of transformer detection.
Utility model content
Based on this, it is necessary to easily affect the ageing technology of on-load tap-changer of transformer detection for traditional scheme and ask
Topic, it is provided that a kind of on-load tap-changer of transformer vibration characteristics detecting system.
A kind of on-load tap-changer of transformer vibration characteristics detecting system, including: piezoelectric acceleration transducer, magnetic clasp,
A/d converter and controller；
Piezoelectric acceleration transducer is adsorbed on the shell of on-load tap-changer of transformer by described magnetic clasp, described piezoelectricity
Formula sensor connects controller by a/d converter；
The vibration signal of described piezoelectric acceleration transducer sensor transformer on-load voltage regulating switch, by described vibration signal
Sending to a/d converter, described a/d converter sends to controller after vibration signal is converted to digital signal.
Above-mentioned on-load tap-changer of transformer vibration characteristics detecting system, is inhaled piezoelectric acceleration transducer by magnetic clasp
It is attached on the shell of on-load tap-changer of transformer, obtains the vibration signal of on-load tap-changer of transformer in real time, and utilize AD
Transducer sends after being converted to the digital signal that above-mentioned vibration signal is corresponding and carries out on-load tap-changer of transformer to controller and shake
The detection of dynamic characteristic, makes above-mentioned on-load tap-changer of transformer vibration characteristics detecting system that load can be had to adjust to corresponding transformator
Compress switch and detect in real time, improve the ageing of detection.
Accompanying drawing explanation
Fig. 1 is the on-load tap-changer of transformer vibration characteristics detecting system structural representation of an embodiment；
Fig. 2 is the on-load tap-changer of transformer vibration characteristics detecting system structural representation of an embodiment；
Fig. 3 is the on-load tap-changer of transformer vibration characteristics detecting system structural representation of an embodiment.
Detailed description of the invention
Concrete reality to the on-load tap-changer of transformer vibration characteristics detecting system that the present invention provides below in conjunction with the accompanying drawings
The mode of executing is described in detail.
The on-load tap-changer of transformer vibration characteristics detecting system structure showing an embodiment with reference to Fig. 1, Fig. 1 is shown
It is intended to, including: piezoelectric acceleration transducer 11, magnetic clasp 12, a/d converter 13 and controller 14；
Piezoelectric acceleration transducer 11 is adsorbed on the shell of on-load tap-changer of transformer 15 by described magnetic clasp 12, institute
State piezoelectric transducer 11 and connect controller 14 by a/d converter 13；
The vibration signal of described piezoelectric acceleration transducer 11 sensor transformer on-load voltage regulating switch 15, by described vibration
Signal sends to a/d converter 13, and described a/d converter 13 sends to controller 14 after vibration signal is converted to digital signal.
Magnetic clasp 12 is utilized to adsorb on the shell of on-load tap-changer of transformer 15 by piezoelectric acceleration transducer 11, can
Vibrate, with minimizing on-load tap-changer of transformer 15, the impact that piezoelectric acceleration transducer 11 is caused, make above-mentioned piezoelectric type add
Velocity sensor 11 is fixed on the measurement position of the shell of on-load tap-changer of transformer 15, it is ensured that piezoelectric type acceleration passes
The effectiveness of the vibration signal that sensor 11 is sensed.
Controller noted above 14 can include computer etc. can only processing equipment, it can obtain the numeral that vibration signal is corresponding
Signal, detects above-mentioned digital signal, to obtain the vibration characteristics of corresponding on-load tap-changer of transformer, it is achieved to accordingly
The monitoring of on-load tap-changer of transformer duty.
The on-load tap-changer of transformer vibration characteristics detecting system that the present embodiment provides, is added piezoelectric type by magnetic clasp 12
Velocity sensor 11 adsorbs on the shell of on-load tap-changer of transformer 15, obtains shaking of on-load tap-changer of transformer in real time
Dynamic signal, and utilize a/d converter 13 to send after being converted to the digital signal that above-mentioned vibration signal is corresponding to controller 14 to become
The detection of depressor on-load voltage regulating switch 15 vibration characteristics, makes above-mentioned on-load tap-changer of transformer vibration characteristics detecting system permissible
Corresponding on-load tap-changer of transformer is detected in real time, improves the ageing of detection.
In one embodiment, above-mentioned on-load tap-changer of transformer vibration characteristics detecting system, it is also possible to include wireless
Communication module 16；Described wireless communication module 16 connects described a/d converter 13, and connects control by the way of radio communication
Device 14.
Above-mentioned wireless communication module 16 can include that bluetooth module, WiFi module etc. can carry out radio communication with controller
Module.Above-mentioned wireless communication module 16 is connected a/d converter 13, and the digital signal making a/d converter 13 export can pass through
Wirelessly transmit to corresponding controller 14, the convenience that controller 14 is installed or connected can be improved.
In one embodiment, above-mentioned on-load tap-changer of transformer vibration characteristics detecting system, it is also possible to include work
Power supply, described working power connects piezoelectric acceleration transducer.
As an embodiment, above-mentioned working power voltage can be DC source, and the rated voltage of working power is 9V
(volt).
The DC source that rated voltage is 9V is connected to above-mentioned piezoelectric acceleration transducer by the present embodiment, for for
State piezoelectric acceleration transducer to be powered, it is ensured that being smoothed out of piezoelectric acceleration transducer work, thus protect
The smooth acquisition of card corresponding vibration signal.
In one embodiment, the testing range of above-mentioned piezoelectric acceleration transducer is that 100g (is used for measuring gravity to add
The unit of speed, every square of the rice second), the Measurement Resolution of piezoelectric acceleration transducer is 50mV/g, and piezoelectric type acceleration passes
The sample rate of sensor is 0.5Hz-10kHz (KHz).
The present embodiment uses testing range to be 100g, and Measurement Resolution is 50mV/g, and sample rate is the pressure of 0.5Hz-10kHz
Electric-type acceleration transducer, it is ensured that the acquisition precision of corresponding vibration signal.
In one embodiment, above-mentioned piezoelectric transducer connects a/d converter by coaxial cable.
As an embodiment, above-mentioned coaxial cable can be BNC (snap-fit connection) line.
The present embodiment uses coaxial cable, it is preferable that can also use BNC line, connects piezoelectric transducer and AD conversion
Device, it is ensured that the wherein transmission quality of vibration signal.
In one embodiment, above-mentioned a/d converter connects controller by USB line.
USB line is used to send digital signal to corresponding controller, it is ensured that digital signal is during sending
Stability.
In one embodiment, controller noted above can arrange several control buttons.
Above-mentioned several control button can include the function buttons such as data acquisition, data preservation, digital independent, and user presses
Each button lower, just can input corresponding control instruction to controller, makes controller respond above-mentioned control instruction.
As an embodiment, controller noted above can arrange host computer etc. for manipulating corresponding transformer on-load voltage regulating
The software of switch vibration characteristics detecting system work, the background analysis software of host computer can include the application developed by Matlab
Program.By the external interface program of Matlab, set up the data cube computation of Matlab and USB interface, thus realize Matlab pair
The signal-obtaining of a/d converter；The background analysis software of host computer can include viewing area and function button (control button).Merit
Can button include data acquisition, preserve, read, contrast, Fourier transformation (FFT) function.Start above-mentioned background analysis software, press
Under " collection " button, the signal that host computer starts to collect vibrating sensor carries out continuous acquisition, and pressing " stopping " button can
Stop the collection of signal." preserve ", " reading " button is used for the preservation to corresponding data (digital signal) and reading, " Fourier
Conversion " function key can show that to viewing area signal carries out Fourier transformation." contrast " function and be used for opening multiple existing
Gather signal data to contrast.
In actual applications, above-mentioned on-load tap-changer of transformer vibration characteristics detecting system can be as it is shown on figure 3, include
Piezoelectric acceleration transducer 11, magnetic clasp 12, a/d converter 13 and controller 14, utilize piezoelectric acceleration transducer 11 existing
The vibration signal sent during the test on-load tap-changer of transformer switching action of field, sends above-mentioned vibration signal to a/d converter
13 are converted to corresponding digital signal, and digital signal is sent middle controller 14 by a/d converter 13, and controller 14 receives numeral letter
After number, above-mentioned digital signal is obtained by Fourier transformation the spectral characteristic of vibration signal, the switch (transformation to same model
Device on-load voltage regulating switch) carry out across comparison, or contrast with same the longitudinal direction switching different time sections, just can analyze
Whether on-load tap-changer of transformer exists exception during switching action；According to on-load tap-changer of transformer vibration characteristics
Detection, it is achieved the monitoring of on-load tap-changer of transformer working condition.
Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality
The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited
In contradiction, all it is considered to be the scope that this specification is recorded.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the common skill of this area
For art personnel, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.
Claims (9)
1. an on-load tap-changer of transformer vibration characteristics detecting system, it is characterised in that including: piezoelectric type acceleration senses
Device, magnetic clasp, a/d converter and controller；
Piezoelectric acceleration transducer is adsorbed on the shell of on-load tap-changer of transformer by described magnetic clasp, and described piezoelectric type passes
Sensor connects controller by a/d converter；
The vibration signal of described piezoelectric acceleration transducer sensor transformer on-load voltage regulating switch, sends described vibration signal
To a/d converter, described a/d converter sends to controller after vibration signal is converted to digital signal.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that also include
Wireless communication module；Described wireless communication module connects described a/d converter, and connects controller by the way of radio communication.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that also include
Working power, described working power connects piezoelectric acceleration transducer.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 3, it is characterised in that described work
Being DC source as supply voltage, the rated voltage of working power is 9V.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that described pressure
The testing range of electric-type acceleration transducer is 100g, and the Measurement Resolution of piezoelectric acceleration transducer is 50mV/g, piezoelectricity
The sample rate of formula acceleration transducer is 0.5Hz-10kHz.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that described pressure
Electric-type sensor connects a/d converter by coaxial cable.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 6, it is characterised in that described same
Shaft cable is BNC line.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that described AD
Transducer connects controller by USB line.
On-load tap-changer of transformer vibration characteristics detecting system the most according to claim 1, it is characterised in that described control
Device processed arranges several and controls button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620766417.3U CN205809250U (en) | 2016-07-19 | 2016-07-19 | On-load tap-changer of transformer vibration characteristics detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620766417.3U CN205809250U (en) | 2016-07-19 | 2016-07-19 | On-load tap-changer of transformer vibration characteristics detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966207A (en) * | 2017-12-30 | 2018-04-27 | 广州供电局有限公司 | Load ratio bridging switch vibration signal acquisition device and analysis system |
-
2016
- 2016-07-19 CN CN201620766417.3U patent/CN205809250U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107966207A (en) * | 2017-12-30 | 2018-04-27 | 广州供电局有限公司 | Load ratio bridging switch vibration signal acquisition device and analysis system |
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