CN108534933A - Transformer winding monitoring device - Google Patents
Transformer winding monitoring device Download PDFInfo
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- CN108534933A CN108534933A CN201810257732.7A CN201810257732A CN108534933A CN 108534933 A CN108534933 A CN 108534933A CN 201810257732 A CN201810257732 A CN 201810257732A CN 108534933 A CN108534933 A CN 108534933A
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- transformer
- signal
- pressure sensor
- pressure
- measured
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0028—Force sensors associated with force applying means
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The present invention is suitable for transformer monitoring technical field, provides a kind of transformer winding monitoring device.Including：Pressure sensor, signal conditioner, data collecting card and industrial personal computer, pressure sensor connection signal conditioner, signal conditioner connect data collecting card, and data collecting card connects industrial personal computer；Pressure sensor is arranged on the upper clamping piece of transformer to be measured, the winding steady state pressure signal for acquiring transformer to be measured；Signal conditioner is for being filtered winding steady state pressure signal；Data collecting card is used to filtered winding steady state pressure signal being converted to digital signal；Industrial personal computer is used to digital signal being reduced to pressure signal, and judges whether the pressure signal after reduction exceeds preset signals threshold range, and the monitoring result of transformer to be measured is obtained according to judging result.After adopting the above scheme, the reliability for improving transformer station high-voltage side bus improves the working efficiency of staff, has ensured the safe and stable operation of power grid.
Description
Technical field
The invention belongs to transformer monitoring technical field more particularly to a kind of transformer winding monitoring devices.
Background technology
In the power system, capital equipment one of of the oil-immersed transformer as electric system, operational reliability it is good
It is bad, it is directly related to network system safety work.
With the increasingly increase of net capacity, transformer damage accident is in rising trend caused by short trouble, according to statistics,
The accident that 110kV and above transformer occur in recent years is more and more, wherein because external short circuit leads to damage accident
Account for significant proportion.When transformer in operation by short-circuit impact after, winding may will produce under electrodynamic action winding torsion
It is bent, tilt, collapse, permanent buckling deformation, such as above-mentioned deformation such as bulge and displacement are found not in time, cumulative effect can make deformation into
One step is aggravated, and then leads to insulation damages, the failures such as breakdown between turn-to-turn short circuit, cake, major insulation electric discharge or complete breakdown occurs.
Then, still by manually being monitored on the spot, the data of monitoring are inaccurate for the monitoring of oil-immersed transformer at present
Really, it and also needs to staff and just goes to scene at regular intervals to be monitored, both reduced the working efficiency of staff,
It is also possible to because monitoring the safe and stable operation less than position influence power grid.
Invention content
In view of this, an embodiment of the present invention provides a kind of transformer winding monitoring device, with solve in the prior art according to
It is manually monitored on the spot, the problem of the data inaccuracy of monitoring.
An embodiment of the present invention provides a kind of transformer winding monitoring devices, including：Pressure sensor, signal conditioner,
Data collecting card and industrial personal computer, the pressure sensor connect the signal conditioner, and the signal conditioner connects the number
According to capture card, the data collecting card connects the industrial personal computer；
The pressure sensor is arranged on the upper clamping piece of transformer to be measured, the winding for acquiring the transformer to be measured
Steady state pressure signal；
The signal conditioner is for being filtered the winding steady state pressure signal；
The data collecting card is used to filtered winding steady state pressure signal being converted to digital signal；
The industrial personal computer is used to the digital signal being reduced to pressure signal, and whether judges the pressure signal after reduction
Beyond preset signals threshold range, the monitoring result of the transformer to be measured is obtained according to judging result.
As further technical solution, if the transformer to be measured is three-phase transformer, the pressure sensor
Quantity is six, and there are two pressure sensors for installation on the upper clamping piece of every phase device body of the three-phase transformer.
As further technical solution, described device further includes：Nail pressing, the first pressing plate and for preventing the pressure from passing
First insulator foot of sensor rotation, the pressure sensor are mounted on first insulator foot, and the nail pressing is mounted on
On upper clamping piece, the nail pressing is fixed with the pressure sensor with bolt, and first insulator foot connects with first pressing plate
Cooperation is touched, the lead of the pressure sensor is drawn out to along upper clamping piece on the fuel tank of the transformer to be measured, on the fuel tank
Reserved wiring flange.
As further technical solution, described device further includes：Second pressing plate, cross-over block and for preventing pressure from passing
Second insulator foot in the upper clamping piece bottom is arranged in second insulator foot of sensor rotation, the pressure sensor
On, the cross-over block for adjusting gap, the pressure are filled between second insulator foot and second pressing plate
The lead of force snesor is drawn out to along upper clamping piece on the fuel tank of the transformer to be measured, and wiring is reserved on the transformer to be measured
Flange.
As further technical solution, if the transformer to be measured is single-phase transformer, the pressure sensor
Quantity is two, and two pressure sensors are arranged on the upper clamping piece of the single-phase transformer.
As further technical solution, the industrial personal computer is additionally operable to, if it is determined that reduction after pressure signal without departing from
Preset signals threshold range, it is determined that the monitoring result of the transformer to be measured is normal, by the pressure signal after reduction into line number
Word filters, then filtered pressure signal is converted, and the pressure value of pressure signal after being filtered stores the pressure
Value.
As further technical solution, the pressure sensor is weighing sensor.
As further technical solution, the model S3363 signal conditioners of the signal conditioner.
As further technical solution, the model PC104 data collecting cards of the data collecting card.
As further technical solution, the industrial personal computer is additionally operable to, if it is determined that the pressure signal after reduction is beyond default
Signal threshold value range, it is determined that the monitoring result of the transformer to be measured is abnormal, abandons the pressure signal after reduction.
Existing advantageous effect is the embodiment of the present invention compared with prior art：After adopting the above scheme, it realizes in real time
The function of transformer winding pressure, can find the axis of winding unstability of transformer, and adopt in time in time in on-line monitoring operation
Effective measures are taken, Accident of Transformer is reduced, extend the service life of transformer, improve the reliable of transformer station high-voltage side bus
Property, the working efficiency of staff is improved, has ensured the safe and stable operation of power grid.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is a kind of structural representation of transformer winding monitoring device provided in an embodiment of the present invention；
Fig. 2 is the schematic layout pattern of pressure sensor provided in an embodiment of the present invention；
Fig. 3 is the mounting means schematic diagram of pressure sensor provided in an embodiment of the present invention；
Fig. 4 is the mounting means schematic diagram for the pressure sensor that another embodiment of the present invention provides.
Specific implementation mode
In being described below, for illustration and not for limitation, it is proposed that such as tool of particular system structure, technology etc
Body details, to understand thoroughly the embodiment of the present invention.However, it will be clear to one skilled in the art that there is no these specific
The present invention can also be realized in the other embodiments of details.In other situations, it omits to well-known system, device, electricity
The detailed description of road and method, in case unnecessary details interferes description of the invention.
In order to illustrate technical solutions according to the invention, illustrated below by specific embodiment.
As shown in Figure 1, be a kind of structural schematic diagram of transformer winding monitoring device, including：Pressure sensor 1, signal
Conditioner 2, data collecting card 3 and industrial personal computer 4, the pressure sensor 1 connect the signal conditioner 2, the signal condition
Device 2 connects the data collecting card 3, and the data collecting card 3 connects the industrial personal computer 4；
The pressure sensor 1 is arranged on the upper clamping piece of transformer to be measured, for acquire the transformer to be measured around
Group steady state pressure signal；
The signal conditioner 2 is for being filtered the winding steady state pressure signal；
The data collecting card 3 is used to filtered winding steady state pressure signal being converted to digital signal；
The industrial personal computer 4 is used to the digital signal being reduced to pressure signal, and judges that the pressure signal after reduction is
It is no to exceed preset signals threshold range, the monitoring result of the transformer to be measured is obtained according to judging result.
Specifically, in order to realize the on-line monitoring to transformer winding steady state pressure, need to design hardware platform, the hardware
Platform is made of pressure sensor 1, signal conditioner 2, data collecting card 3 and industrial personal computer 4, and industrial personal computer 4 is used for digital signal
It is reduced to pressure signal, and judges whether the pressure signal after reduction exceeds preset signals threshold range, signal threshold value range root
It is set according to the range of pressure, it is preferred that pressure range is 0~5 ton, then upper limit threshold is 5 tons, lower threshold 0, after reduction
Pressure signal is more than upper limit threshold and is abnormal pressure signal less than the data of lower threshold, is needed after collecting abnormal pressure signal
Abnormal pressure signal is abandoned subsequently into next collection period；It is more than lower threshold and less than the data of upper limit threshold
Normal pressure signal obtains the monitoring result of transformer to be measured further according to normal pressure signal, for example, if after acquisition reduction
Pressure signal>5 tons, or<0 is abnormal pressure signal, needs to resurvey after abandoning；If being after pressure signal reduction
4.5 tons, and 0<4.5<5, then 4.5 tons of pressure is normal signal.
In addition, as shown in Fig. 2, in a specific example, if the transformer to be measured is three-phase transformer, the pressure
The quantity of force snesor 1 is six, and there are two pressure sensors for installation on the upper clamping piece 5 of every phase device body of the three-phase transformer
1。
Specifically, in order to increase the service life of pressure sensor, the shell of pressure sensor 1 uses metal material, is
Prevent high voltage electric field induction metal shell when 1 charging operation of pressure sensor from generating suspended discharge, therefore pressure sensor 1 must
It must be mounted at ground potential, for oil-immersed transformer, folder independent grounding, therefore transformer upper clamping piece and lower clamping piece are exactly ground
Current potential, while in order to consider that cable is drawn conveniently, pressure sensor 1 being mounted on upper clamping piece in this scheme, according to transformer
It is single-phase or three-phase transformer, needs the weighing sensor for installing different number, for single-phase transformer, needs two titles of installation
Sensor is retransmitted, is mounted between upper clamping piece and pressing plate, for three-phase transformer, needs altogether that 6 weighing sensors are installed, per phase
Device body installs 2 weighing sensors, is mounted between upper clamping piece and pressing plate, high-pressure side and the respectively installation 3 of low-pressure side upper clamping piece, this
It is mounted with 6 weighing sensors respectively with the ABC three-phase devices of three-phase transformer in embodiment.
In addition, as shown in figure 3, in a specific example, further include：Nail pressing 6, the first pressing plate 7 and described for preventing
The first insulator foot 8 that pressure sensor 1 rotates, the pressure sensor 1 is mounted on first insulator foot 8, described
Nail pressing 6 be mounted on upper clamping piece 5 on, the nail pressing 6 is fixed with the pressure sensor 1 with bolt, first insulator foot 8 and
First pressing plate 7 is engaged, and the lead of the pressure sensor 1 is drawn out to the transformer to be measured along upper clamping piece 5
On fuel tank, wiring flange is reserved on the fuel tank.
Specifically, the transformer of mode is compressed using nail pressing, using dedicated first insulator foot 8, pressure sensing
Device 1 is mounted on by bolt on the first insulator foot 8, and the first insulator foot 8 has the function of preventing pressure sensor 1 from rotating,
Nail pressing 6 is mounted on upper clamping piece 5, and nail pressing 6 is fixed with pressure sensor 1 with bolt, and the effect one of this bolt is transmission pressure, and
It is that pressure sensor 1 falls after preventing transformer axial direction unstability, the first insulator foot 8 is in direct contact with the first pressing plate 7, and pressure passes
The lead of sensor 1 is drawn out to along upper clamping piece on the fuel tank of transformer to be measured, and wiring flange is reserved on fuel tank.
In addition, as shown in figure 4, in a specific example, further include：Second pressing plate 9, cross-over block 10 and for preventing
Second insulator foot 11 of pressure sensor rotation, the pressure sensor 1 are arranged described the second of 5 bottom of the upper clamping piece
On insulator foot 11, it is filled between second insulator foot 11 and second pressing plate 9 for adjusting the described exhausted of gap
The lead of edge cushion block 10, the pressure sensor 1 is drawn out to along upper clamping piece 5 on the fuel tank of the transformer to be measured, described to wait for
It surveys and reserves wiring flange on transformer.
Specifically, the transformer of mode is compressed using cross-over block, using dedicated second insulator foot 11, pressure
Sensor 1 by bolt be mounted on the second insulator foot 11 on, the second insulator foot 11 have prevent pressure sensor 1 rotate
Function, pressure sensor 1 are fixed by bolts to 5 bottom of upper clamping piece, and the effect one of this bolt is to transmit pressure, second is that preventing pressure
Sensor falls after the axial unstability of sensor 1, and cross-over block 10 is filled between the second insulator foot 11 and the second pressing plate 9, is used for
Adjust gap.The lead of pressure sensor 1 is drawn out to along folder on the fuel tank of transformer to be measured, and connection is reserved on fuel tank
It is blue.
In addition, in a specific example, if the transformer to be measured is single-phase transformer, the pressure sensor
Quantity is two, and two pressure sensors are arranged on the upper clamping piece of the single-phase transformer, are separately positioned on high potential
Upper clamping piece on and low potential upper clamping piece on.
In addition, in a specific example, the industrial personal computer is additionally operable to, if it is determined that reduction after pressure signal without departing from
Preset signals threshold range, it is determined that the monitoring result of the transformer to be measured is normal, by the pressure signal after reduction into line number
Word filters, then filtered pressure signal is converted, it is preferred that is converted into metric unit newton, pressure after being filtered
The pressure value of signal stores the pressure value, is checked for staff.
In addition, in a specific example, the pressure sensor is weighing sensor, and weighing sensor selection is accurate
Type, degree of protection reach IP68, can impregnate in the oil for a long time.
In addition, in a specific example, the model S3363 signal conditioners of the signal conditioner, processing speed
Soon, and signal condition it is accurate, loss of signal rate is low.
In addition, in a specific example, the model PC104 data collecting cards of the data collecting card, 16 DA
Precision, 100KS/s analog output frequencies, the full Interface Video capured keystrokes of DV+AV+Audio, the perfect adaptation of quality and performance,
SMD patch capacitors, superior, full interface board of doing manual work, integrate stereo input mouth, no longer need to switching sound card, exclusive audio association
Processing function, binaural input capture, sound quality greatly improve, and prevent audio, video difference, and low temperature optimization is set
Meter ensures that the stability of ultra-long time capture, clutter screened circuit keep the image quality of capture apparent, professional Chroma Key
Function, film effect is more excellent, and full interface is equipped with, and can capture the material in any video playback apparatus, input interface:AV/
SVIDEO/DV, video:720X576/352X288, audio:8/16/32/44.1/48, standard:N/P systems, driving:Standard
DSHOW drives.
In addition, in a specific example, the industrial personal computer is additionally operable to, if it is determined that the pressure signal after reduction is beyond default
Signal threshold value range, it is determined that the monitoring result of the transformer to be measured is abnormal, abandons the pressure signal after reduction, re-starts
Acquisition judges, and abnormal monitoring result is recorded, and is saved in database, is called and looks into for later staff
It sees, when transformer breaks down so that staff can ask according to the exception monitoring of record as a result, quickly and accurately finding out
Where topic, transformer repair time is shortened, the efficiency that staff pinpoints the problems is improved, provided for staff very big
Facility.
It should be understood that the size of the serial number of each step is not meant that the order of the execution order in above-described embodiment, each process
Execution sequence should be determined by its function and internal logic, the implementation process without coping with the embodiment of the present invention constitutes any limit
It is fixed.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it can also
It is that each unit physically exists alone, it can also be during two or more units be integrated in one unit.Above-mentioned integrated list
The form that hardware had both may be used in member is realized, can also be realized in the form of SFU software functional unit.
If the integrated module/unit be realized in the form of SFU software functional unit and as independent product sale or
In use, can be stored in a computer read/write memory medium.Based on this understanding, the present invention realizes above-mentioned implementation
All or part of flow in example method, can also instruct relevant hardware to complete, the meter by computer program
Calculation machine program can be stored in a computer readable storage medium, the computer program when being executed by processor, it can be achieved that on
The step of stating each embodiment of the method.Wherein, the computer program includes computer program code, the computer program generation
Code can be source code form, object identification code form, executable file or certain intermediate forms etc..The computer-readable medium
May include：Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic of the computer program code can be carried
Dish, 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 described
The content that computer-readable medium includes can carry out increasing appropriate according to legislation in jurisdiction and the requirement of patent practice
Subtract, such as in certain jurisdictions, according to legislation and patent practice, computer-readable medium do not include be electric carrier signal and
Telecommunication signal.
Embodiment described above is merely illustrative of the technical solution of the present invention, rather than its limitations；Although with reference to aforementioned reality
Applying example, invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each
Technical solution recorded in embodiment is modified or equivalent replacement of some of the technical features；And these are changed
Or replace, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution should all
It is included within protection scope of the present invention.
Claims (10)
1. a kind of transformer winding monitoring device, which is characterized in that including：Pressure sensor, signal conditioner, data collecting card
And industrial personal computer, the pressure sensor connect the signal conditioner, the signal conditioner connects the data collecting card, institute
It states data collecting card and connects the industrial personal computer；
The pressure sensor is arranged on the upper clamping piece of transformer to be measured, the winding stable state for acquiring the transformer to be measured
Pressure signal；
The signal conditioner is for being filtered the winding steady state pressure signal；
The data collecting card is used to filtered winding steady state pressure signal being converted to digital signal；
The industrial personal computer is used to the digital signal being reduced to pressure signal, and judges whether the pressure signal after reduction exceeds
Preset signals threshold range obtains the monitoring result of the transformer to be measured according to judging result.
2. transformer winding monitoring device as described in claim 1, which is characterized in that if the transformer to be measured is three phase transformations
Depressor, then the quantity of the pressure sensor is six, and two are equipped on the upper clamping piece of every phase device body of the three-phase transformer
A pressure sensor.
3. transformer winding monitoring device as described in claim 1, which is characterized in that further include：Nail pressing, the first pressing plate and use
In the first insulator foot for preventing the pressure sensor rotation, the pressure sensor is mounted on first insulator foot
On, the nail pressing is mounted on upper clamping piece, and the nail pressing is fixed with the pressure sensor with bolt, first insulator foot
It is engaged with first pressing plate, the lead of the pressure sensor is drawn out to the oil of the transformer to be measured along upper clamping piece
On case, wiring flange is reserved on the fuel tank.
4. transformer winding monitoring device as described in claim 1, which is characterized in that further include：Second pressing plate, cross-over block
With the second insulator foot for preventing pressure sensor from rotating, the institute in the upper clamping piece bottom is arranged in the pressure sensor
It states on the second insulator foot, is filled between second insulator foot and second pressing plate for adjusting the described exhausted of gap
The lead of edge cushion block, the pressure sensor is drawn out to along upper clamping piece on the fuel tank of the transformer to be measured, the change to be measured
Wiring flange is reserved on depressor.
5. transformer winding monitoring device as described in claim 1, which is characterized in that if the transformer to be measured is single-phase change
Depressor, then the quantity of the pressure sensor is two, and two pressure sensors are arranged at the upper of the single-phase transformer
On folder.
6. transformer winding monitoring device as described in claim 1, which is characterized in that the industrial personal computer is additionally operable to, if it is determined that
Pressure signal after reduction is without departing from preset signals threshold range, it is determined that and the monitoring result of the transformer to be measured is normal,
Pressure signal after reduction is subjected to digital filtering, then filtered pressure signal is converted, pressure is believed after being filtered
Number pressure value, store the pressure value.
7. transformer winding monitoring device as described in claim 1, which is characterized in that the pressure sensor is weighing and sensing
Device.
8. transformer winding monitoring device as described in claim 1, which is characterized in that the model of the signal conditioner
S3363 signal conditioners.
9. transformer winding monitoring device as described in claim 1, which is characterized in that the model of the data collecting card
PC104 data collecting cards.
10. transformer winding monitoring device as described in claim 1, which is characterized in that the industrial personal computer is additionally operable to, if it is determined that
Pressure signal after reduction exceeds preset signals threshold range, it is determined that the monitoring result of the transformer to be measured is abnormal, abandons
Pressure signal after reduction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257732.7A CN108534933B (en) | 2018-03-27 | 2018-03-27 | Transformer winding monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810257732.7A CN108534933B (en) | 2018-03-27 | 2018-03-27 | Transformer winding monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108534933A true CN108534933A (en) | 2018-09-14 |
| CN108534933B CN108534933B (en) | 2020-12-08 |
Family
ID=63483690
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810257732.7A Active CN108534933B (en) | 2018-03-27 | 2018-03-27 | Transformer winding monitoring device |
Country Status (1)
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Cited By (2)
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| CN110926673A (en) * | 2019-12-02 | 2020-03-27 | 沈阳变压器研究院股份有限公司 | Device for measuring short circuit force of power transformer |
| 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 |
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| 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 |
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| Publication number | Publication date |
|---|---|
| CN108534933B (en) | 2020-12-08 |
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