CN106289435A - Oil-immersed power transformer vacation oil level diagnostic methods based on three vibrating sensors - Google Patents
Oil-immersed power transformer vacation oil level diagnostic methods based on three vibrating sensors Download PDFInfo
- Publication number
- CN106289435A CN106289435A CN201610577975.XA CN201610577975A CN106289435A CN 106289435 A CN106289435 A CN 106289435A CN 201610577975 A CN201610577975 A CN 201610577975A CN 106289435 A CN106289435 A CN 106289435A
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- China
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- oil
- vibrating sensor
- oil level
- vibrating
- mounting seat
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
- H01F27/12—Oil cooling
- H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention discloses a kind of oil-immersed power transformer vacation oil level diagnostic method based on three vibrating sensors, solve existing oil level indicator and operating oil-immersed power transformer pasta is monitored the problem lost efficacy.The medial plane of installation for transformer (3) is provided with oil level testing cassete (5), the oil level testing cassete (5) of oil-level measurement graduation apparatus (17) side is movably set with vibrating sensor mounting seat (7), vibrating sensor mounting seat (7) is provided with electric magnet (21), coil (16) on electric magnet (21) electrically connects with electric controller (11), vibrating sensor mounting seat (7) is provided with the first spring (19), connect in the outer end of the first spring (19) and have the first vibrating sensor (14), first vibrating sensor (14) is electrically connected by signal transmission line (9) with frequency of vibration monitor (10).The present invention carries out testing and diagnosing in the case of transformator does not has a power failure.
Description
Technical field
The present invention relates to a kind of oil-filled transformer vacation oil level diagnostic equipment and diagnostic method, for oil-immersed type power transformation
There is identification during false oil level in device.
Background technology
In power industry, use oil-immersed power transformer in a large number, and conservator is the vitals of transformator.Work as transformation
When device oil temperature raises, the oil in fuel tank can expand accordingly, makes the oil level in conservator raise accordingly, now the portion gas in conservator
Discharge through respiratory organ；When temperature of oil in transformer declines, the oil in fuel tank can shrink accordingly, and the oil level in conservator can decline accordingly,
The now internal suction part gas of conservator.Air is discharged or sucked to installation for transformer by respiratory organ, is formed and breathes work normally
With, reach to keep the pressure balanced purpose of oil tank of transformer.On conservator, generally it is provided with an oil level indicator, is used to refer to oil
The height of oil level in pillow, it is ensured that the safe operation of transformator.Oil-immersed power transformer run in, oil level indicator it sometimes appear that
Fault or conservator capsule occur abnormal, and oil level indicator instruction is not inconsistent with actual oil level, form false oil level phenomenon, cause operation
In the supervision distortion of oil-immersed power transformer pasta, transformator oil spout or oil starvation can be caused time serious, even cause transformation
Device is stopped transport or insulation breakdown is damaged.
Summary of the invention
The invention provides a kind of oil-immersed power transformer vacation oil level diagnostic method based on three vibrating sensors, solve
Existing oil level indicator of having determined monitors the technical problem lost efficacy to operating oil-immersed power transformer pasta.
The present invention is to solve above technical problem by the following technical programs:
A kind of oil-immersed power transformer vacation oil level diagnostic equipment based on three vibrating sensors, including the transformation being currently running
Device, frequency of vibration monitor and electric controller, be provided with oil tank of transformer, on the transformator being currently running on oil tank of transformer
It is respectively arranged with bushing shell for transformer and installation for transformer, installation for transformer is provided with oil level indicator, outside installation for transformer
It is provided with oil level testing cassete on side plane, oil level testing cassete is respectively arranged with oil-level measurement graduation apparatus, carve at oil-level measurement
It is movably set with vibrating sensor mounting seat on the oil level testing cassete of degree table side, vibrating sensor mounting seat is provided with electricity
Magnet, the coil on electric magnet is electrically connected with electric controller, is provided with the first spring in vibrating sensor mounting seat,
The outer end of the first spring connects the first vibrating sensor, the probe of the first vibrating sensor and the medial plane of installation for transformer
Abutting against together, the first vibrating sensor is electrically connected by signal transmission line with frequency of vibration monitor.
It is provided with the second spring, outside the second spring in vibrating sensor mounting seat above the first vibrating sensor
End connection has the second vibrating sensor, together with the probe of the second vibrating sensor abuts against with the medial plane of installation for transformer；
Being provided with the 3rd spring in vibrating sensor mounting seat below the first vibrating sensor, connecting in the outer end of the 3rd spring has
3rd vibrating sensor, together with the probe of the 3rd vibrating sensor abuts against with the medial plane of installation for transformer；Second vibration
Sensor and the 3rd vibrating sensor are electrically connected with electric controller respectively；Oil level testing cassete is provided with motor,
Motor is mechanically coupled together with vibrating sensor mounting seat by drive mechanism, and motor and electric controller are by controlling
Line is electrically connected.
A kind of oil-immersed power transformer vacation oil level diagnostic method based on three vibrating sensors, comprises the following steps:
The first step, oil level testing cassete is set on the medial plane of installation for transformer, oil level testing cassete is respectively provided with oil level
Measurement scales table, on the oil level testing cassete of oil-level measurement graduation apparatus side, activity arranges vibrating sensor mounting seat, in vibration
Arranging electric magnet on sensor installation seat, the coil on electric magnet is electrically connected with electric controller, installs at vibrating sensor
First spring is set on Zuo, connects the first vibrating sensor, the probe of the first vibrating sensor and change in the outer end of the first spring
The medial plane of depressor conservator abuts against together, and the first vibrating sensor is electrically connected by signal transmission line with frequency of vibration monitor
It is connected together；
Second step, vibrating sensor mounting seat is moved from top to bottom along oil-level measurement graduation apparatus, make electric magnet by electric controller
On coil spacing ground electric, make the probe of the first vibrating sensor, the probe of the second vibrating sensor and the 3rd vibrating sensing
Together with the probe of device all abuts against with the medial plane of installation for transformer, observe the vibrational waveform on frequency of vibration monitor, when
When the waveform of three vibrating sensors has one to change, stop mobile vibrating sensor mounting seat, read waveform change
Oil-level measurement scale residing for vibrating sensor, and compare with the instruction oil level of the oil level indicator of setting on installation for transformer,
When difference is more than 10 millimeters, it is judged that oil level indicator exists false oil level.
A diameter of 10-16 millimeter of the probe of vibrating sensor, vibrating sensor mounting seat (7) is every 10 millimeters of samplings one
Secondary frequency of vibration signal.
The present invention utilizes the conservator of transformator operationally to have oily position different with the frequency of vibration characteristic at oil-free position, right
The actual oil level of conservator positions, thus finds the problem whether oil level indicator of transformator exists false oil level.The present invention be
Transformator carries out testing and diagnosing in the case of not having a power failure, and running transformer safety does not has any negative interaction.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of the oil level testing cassete 5 of the present invention；
Fig. 3 is the fiting relation figure between the vibrating sensor mounting seat 7 of the present invention and vibrating sensor and spring.
Detailed description of the invention
The present invention is described in detail below in conjunction with the accompanying drawings:
A kind of oil-immersed power transformer vacation oil level diagnostic equipment based on three vibrating sensors, including the transformation being currently running
Device, frequency of vibration monitor 10 and electric controller 11, be provided with oil tank of transformer 1, at transformator on the transformator being currently running
It is respectively arranged with bushing shell for transformer 2 and installation for transformer 3 on fuel tank 1, installation for transformer 3 is provided with oil level indicator 4, in transformation
It is provided with oil level testing cassete 5 on the medial plane of device conservator 3, oil level testing cassete 5 is respectively arranged with oil-level measurement graduation apparatus
17, the oil level testing cassete 5 of oil-level measurement graduation apparatus 17 side is movably set with vibrating sensor mounting seat 7, passes in vibration
Being provided with electric magnet 21 in sensor mounting seat 7, the coil 16 on electric magnet 21 is electrically connected with electric controller 11, passes in vibration
Being provided with the first spring 19 in sensor mounting seat 7, connecting in the outer end of the first spring 19 has the first vibrating sensor 14, and first shakes
Together with the probe of dynamic sensor 14 abuts against with the medial plane of installation for transformer 3, the first vibrating sensor 14 and frequency of vibration
Monitor 10 is electrically connected by signal transmission line 9.
The second spring 18 it is provided with, at the second bullet in vibrating sensor mounting seat 7 above the first vibrating sensor 14
The outer end of spring 18 connects the second vibrating sensor 13, and the probe of the second vibrating sensor 13 is put down with the outside of installation for transformer 3
Face abuts against together；It is provided with the 3rd spring 20, in vibrating sensor mounting seat 7 below the first vibrating sensor 14
The outer end of three springs 20 connects the 3rd vibrating sensor 15, outside the probe of the 3rd vibrating sensor 15 is with installation for transformer 3
Side plane abuts against together；Second vibrating sensor 13 and the 3rd vibrating sensor 15 are connected electrically in one with electric controller 11 respectively
Rise；Being provided with motor 6 on oil level testing cassete 5, motor 6 is by drive mechanism 12 and vibrating sensor mounting seat 7
Mechanically coupled together, motor 6 is electrically connected by control line 8 with electric controller 11.
A kind of oil-immersed power transformer vacation oil level diagnostic method based on three vibrating sensors, comprises the following steps:
The first step, oil level testing cassete 5 is set on the medial plane of installation for transformer 3, oil level testing cassete 5 is respectively provided with oil
Position Measurement scales table 17, on the oil level testing cassete 5 of oil-level measurement graduation apparatus 17 side, activity arranges vibrating sensor mounting seat
7, vibrating sensor mounting seat 7 arranges electric magnet 21, the coil 16 on electric magnet 21 is electrically connected with electric controller 11,
Vibrating sensor mounting seat 7 arranges the first spring 19, connects the first vibrating sensor 14 in the outer end of the first spring 19, the
Together with the probe of one vibrating sensor 14 abuts against with the medial plane of installation for transformer 3, the first vibrating sensor 14 and vibration
Frequency monitoring instrument 10 is electrically connected by signal transmission line 9；
Second step, vibrating sensor mounting seat 7 is moved from top to bottom along oil-level measurement graduation apparatus 17, make electricity by electric controller 11
Coil 16 compartment of terrain on Magnet 21 obtains electric, make the probe of the first vibrating sensor 14, the probe of the second vibrating sensor 13 and
Together with probe all medial plane with installation for transformer 3 of the 3rd vibrating sensor 15 abut against, observation frequency of vibration monitor
Vibrational waveform on 10, when the waveform of three vibrating sensors has one to change, stops mobile vibrating sensor and installs
Seat 7, read waveform change the oil-level measurement scale residing for vibrating sensor, and with installation for transformer 3 on arrange oil level indicator 4
Instruction oil level compare, when difference is more than 10 millimeters, it is judged that oil level indicator exists false oil level.
A diameter of 10-16 millimeter of the probe of vibrating sensor, vibrating sensor mounting seat 7 is every 10 millimeters of samplings once
Frequency of vibration signal.
The present invention controls the probe of three vibrating sensors and is carrying out the sampling of frequency by controlling motor 6, every
One group of frequency of vibration characteristic waveforms of 10 millimeters of samplings, when there being a vibrating sensor occurrence frequency characteristic in three vibrating sensors
During waveform change, now can be by the oil level of the oil-level measurement scale residing for this vibrating sensor Yu immediate vibrating sensor
Measurement scales, is averaged, and obtains oil-level measurement scale accurately.As, when the frequency characteristic waveform of the second vibrating sensor 13
When changing, read oil-level measurement scale and the oil-level measurement of the second vibrating sensor 14 of the first vibrating sensor 13 respectively
Scale, and seek both meansigma methodss.By this meansigma methods height and comparing that oil level indicator 4 shows, as being highly consistent, permissible
Judge that oil level indicator 14 normally shows.If height tolerance is more than 10 millimeters, then judge that oil level indicator 14 has problems, i.e. there is false oil
Position phenomenon.
Claims (2)
1. oil-immersed power transformer vacation oil level diagnostic methods based on three vibrating sensors, comprise the following steps:
The first step, oil level testing cassete (5) is set on the medial plane of installation for transformer (3), upper respectively at oil level testing cassete (5)
Arranging oil-level measurement graduation apparatus (17), the upper activity of the oil level testing cassete (5) in oil-level measurement graduation apparatus (17) side arranges vibration
Sensor installation seat (7), arranges electric magnet (21) in vibrating sensor mounting seat (7), the coil (16) on electric magnet (21)
It is electrically connected with electric controller (11), vibrating sensor mounting seat (7) arranges the first spring (19), at the first spring
(19) outer end connects the first vibrating sensor (14), outside the probe of the first vibrating sensor (14) is with installation for transformer (3)
Side plane abuts against together, and the first vibrating sensor (14) is electrically connected by signal transmission line (9) with frequency of vibration monitor (10)
It is connected together；
Second step, vibrating sensor mounting seat (7) is moved from top to bottom along oil-level measurement graduation apparatus (17), pass through electric controller
(11) make coil (16) compartment of terrain on electric magnet (21) obtain electric, make the probe of the first vibrating sensor (14), the second vibration pass
The probe of sensor (13) and the probe of the 3rd vibrating sensor (15) all medial plane with installation for transformer (3) abut against one
Rise, observe the vibrational waveform on frequency of vibration monitor (10), when the waveform of three vibrating sensors has one to change,
Stop mobile vibrating sensor mounting seat (7), read the oil-level measurement scale residing for vibrating sensor of waveform change, and with change
The instruction oil level of the upper oil level indicator (4) arranged of depressor conservator (3) compares, when difference is more than 10 millimeters, it is judged that oil level indicator
There is false oil level.
A kind of oil-immersed power transformer vacation oil level diagnosis sides based on three vibrating sensors the most according to claim 1
Method, it is characterised in that a diameter of 10-16 millimeter of the probe of vibrating sensor, vibrating sensor mounting seat (7) is every 10 millimeters
Sample a frequency of vibration signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577975.XA CN106289435B (en) | 2016-07-21 | 2016-07-21 | Oil-immersed power transformer false oil level diagnosis method based on three vibration sensors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577975.XA CN106289435B (en) | 2016-07-21 | 2016-07-21 | Oil-immersed power transformer false oil level diagnosis method based on three vibration sensors |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106289435A true CN106289435A (en) | 2017-01-04 |
| CN106289435B CN106289435B (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610577975.XA Active CN106289435B (en) | 2016-07-21 | 2016-07-21 | Oil-immersed power transformer false oil level diagnosis method based on three vibration sensors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113324622A (en) * | 2021-04-13 | 2021-08-31 | 江元(天长)科技股份有限公司 | Equipment for detecting and analyzing liquid level by radar |
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Cited By (1)
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| CN113324622A (en) * | 2021-04-13 | 2021-08-31 | 江元(天长)科技股份有限公司 | Equipment for detecting and analyzing liquid level by radar |
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| Publication number | Publication date |
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| CN106289435B (en) | 2019-12-13 |
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