CN109655723A - A kind of partial discharge detecting sensor for high-tension current inductor - Google Patents
A kind of partial discharge detecting sensor for high-tension current inductor Download PDFInfo
- Publication number
- CN109655723A CN109655723A CN201811631580.9A CN201811631580A CN109655723A CN 109655723 A CN109655723 A CN 109655723A CN 201811631580 A CN201811631580 A CN 201811631580A CN 109655723 A CN109655723 A CN 109655723A
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- Prior art keywords
- magnetic core
- partial discharge
- discharge detecting
- detecting sensor
- regulating winding
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- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 36
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 36
- 239000011733 molybdenum Substances 0.000 claims abstract description 36
- 229910000889 permalloy Inorganic materials 0.000 claims abstract description 32
- 238000004804 winding Methods 0.000 claims abstract description 30
- 230000001105 regulatory effect Effects 0.000 claims abstract description 29
- 238000002347 injection Methods 0.000 claims description 5
- 239000007924 injection Substances 0.000 claims description 5
- 239000011810 insulating material Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 239000011257 shell material Substances 0.000 claims 4
- 239000011258 core-shell material Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 6
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
Abstract
The invention discloses a kind of partial discharge detecting sensors for high-tension current inductor, including adjusting knob, magnetic core, signal output interface, shielding shell, regulating winding；Sensor internal is provided with opening, for being mounted in the ground line of high-voltage mutual inductor by open card；Magnetic core setting is in shielding shell；Magnetic core uses molybdenum permalloy magnetic core, the multistage regulating winding lifted one's head is arranged on molybdenum permalloy magnetic core, each of regulating winding, which is lifted one's head, to be connected on an adjusting knob, for changing inductance by adjusting knob switching coil the number of turns to export the signal of different amplitudes and different frequency bands；The final output end of regulating winding is connected to signal output interface.Sensor is mutually butted by two c-type structures；Including two c-type magnetic cores, magnet is embedded on two c-type structure interface corresponding positions and is quickly connected.Suitable for high-tension current inductor, can be directly installed on the ground line of high-voltage mutual inductor by opening.
Description
Technical field
The present invention relates to a kind of partial discharge detecting sensors for high-tension current inductor, belong to electric system application
Technical field.
Background technique
High-tension current inductor is the important equipment in electric system, and bus high current is converted into low current, for measuring,
Control, protection use.It is exhausted after run a period of time but when portioned product is due to processing or technique existing defects when in-site installation
Edge performance can gradually decrease, and shelf depreciation mostly can occur when occurring Insulation Problems inside mutual inductor, and generate gas, local mistake
Phenomena such as hot, causes mutual inductor deformation even to explode.
Chromatography and the method for infrared measurement of temperature cannot find the insulation defect of early stage at present, miss best maintenance opportunity.Office
Live detection discharges it can be found that high-voltage mutual inductor premature insulator defect in portion, but currently used long-range ultrasonic wave and ultraviolet partial discharge
Detection method can only detect corona outside mutual inductor, climb the failures such as electricity, can not detect mutual inductor internal discharge.
The shelf depreciation inside the detectable mutual inductor of High Frequency Current Sensor is clamped on ground line, but high-voltage mutual inductor is pacified
On pillar, grounding copper bar is close to column and is fixed, and only has in column bottom less than 30mm slight void, and busbar width is more
In 5mm or more, the lesser round High Frequency Current Sensor of opening diameter can not be installed on busbar, the biggish high frequency of opening diameter
Current sensor is since internal-and external diameter thickness is larger and has crooked radian that can not be mounted in gap, and routine is using FERRITE CORE
Rectangular aperture High Frequency Current Sensor thickness is larger can not to be equally mounted in gap.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of partial discharge detecting sensor, fits
It for high-tension current inductor, can directly be installed on the ground line of high-voltage mutual inductor, detection is by line grounded inside mutual inductor
The shelf depreciation high-frequency current signal of outflow.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A kind of partial discharge detecting sensor, it is characterised in that: outer including adjusting knob, magnetic core, signal output interface, shielding
Shell, regulating winding；
The sensor internal is provided with opening, for being mounted in the ground line of high-voltage mutual inductor by the open card；
The magnetic core setting is in shielding shell；
The magnetic core uses molybdenum permalloy magnetic core, and the multistage regulating winding lifted one's head is arranged on molybdenum permalloy magnetic core, described
Each of regulating winding, which is lifted one's head, to be connected on the adjusting knob, for changing electricity by adjusting knob switching coil the number of turns
Sensibility reciprocal is to export the signal of different amplitudes and different frequency bands；The final output end of regulating winding is connected to signal output interface.
Preferably, the partial discharge detecting sensor, it is characterised in that: further include calibration input interface,
Calibration input coil is arranged with calibration input coil on another molybdenum permalloy magnetic core, and the calibration input coil is connected to
Calibration input interface；For being demarcated by calibration input interface Injection Signal to sensor.
Preferably, the partial discharge detecting sensor, it is characterised in that: the sensor is by two c-types
Structure is mutually butted；The sensor includes two c-type magnetic cores, and the multistage adjusting lifted one's head is arranged on one of magnetic core
Coil is arranged with calibration input coil on another magnetic core；Magnet is embedded on two c-type structure interface corresponding positions；
For being quickly connected by the magnet.
Further, the partial discharge detecting sensor, it is characterised in that: the calibration input coil and molybdenum perm
Insulating part is provided between alloy core, it is short-circuit between calibration input coil and molybdenum permalloy magnetic core for preventing.
Further, shielding shell is set outside the magnetic core, for protecting to magnetic core, and shields external electromagnetic interference
Signal.
Further, the partial discharge detecting sensor, it is characterised in that: lead between the magnetic core and shielding shell
Insulating materials is crossed to separate.
Further, the partial discharge detecting sensor, it is characterised in that: the regulating winding and molybdenum permalloy
Insulating part is provided between magnetic core, it is short-circuit between regulating winding and molybdenum permalloy magnetic core for preventing.
Further, the partial discharge detecting sensor, it is characterised in that: the material of the shielding shell is aluminium.
Further, the partial discharge detecting sensor, it is characterised in that: the diameter of the magnet is 10mm.
Further, the partial discharge detecting sensor, it is characterised in that: the size of the opening is 22 mm *
110mm；The molybdenum permalloy core thickness is 10mm.
The utility model has the advantages that partial discharge detecting sensor provided by the invention, can directly be blocked by the opening at center on shell
On the ground line of high-voltage mutual inductor, detect by the shelf depreciation high-frequency current signal of line outflow grounded inside mutual inductor；
Each of regulating winding, which is lifted one's head, to be connected on an adjusting knob, for changing inductance by adjusting knob switching coil the number of turns
To export the signal of different amplitudes and different frequency bands；It is wound with calibration input coil on magnetic core and is connected to calibration input interface, it can
Sensor is demarcated by calibration input interface Injection Signal.Using molybdenum permalloy magnetic core, molybdenum permalloy has
The magnetic characteristic of color, suitable for the coupling of high-frequency signal, the magnetic core of 10mm thickness can meet the requirement such as frequency band, transfer impedance.
Sensor is whole by upper and lower two c-type structure compositions, by the diameter 10mm being embedded on two joint faces high-intensitive magnet into
Row quickly connection, is more suitable for live use.
Detailed description of the invention
Fig. 1 is the sectional structure chart of embodiment partial discharge detecting sensor；
Fig. 2 is the dimensional drawing of embodiment partial discharge detecting sensor；
Fig. 3 is the exterior perspective view of embodiment partial discharge detecting sensor；
In figure: adjusting knob 1, calibration input interface 2, calibration input coil 3, molybdenum permalloy magnetic core 4, magnet 5, signal output
Interface 6, shielding shell 7, regulating winding 8.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
As shown in Figure 1, a kind of partial discharge detecting sensor for high-tension current inductor, including adjusting knob 1, school
Quasi- input interface 2, molybdenum permalloy magnetic core 4, magnet 5, signal output interface 6, shielding shell 7, is adjusted calibration input coil 3
Coil 8.
The center sensor is provided with opening, for being mounted in the ground line of high-voltage mutual inductor by the open card；
The size of the opening is 22 mm * 110mm；
The magnetic core uses molybdenum permalloy magnetic core, core thickness 10mm；
The multistage regulating winding 8 lifted one's head is arranged on one of molybdenum permalloy magnetic core 4, each of described regulating winding 8 goes out
Head is connected on the adjusting knob 1, is used to change inductance by 1 switching coil the number of turns of adjusting knob to output not
With the signal of amplitude and different frequency bands；The final output end of regulating winding 8 is connected to signal output interface 6 through lead；
Calibration input coil 3 is arranged on another molybdenum permalloy magnetic core 4, it is defeated that the calibration input coil 3 is connected to calibration
Incoming interface 2；For being demarcated by 2 Injection Signal of calibration input interface to sensor.
Shielding shell is set outside the magnetic core, for protecting to magnetic core, and shields external electromagnetic interference signal.
It is provided with insulating part between the regulating winding 8, calibration input coil 3 and molybdenum permalloy magnetic core 4, for preventing
It is short-circuit between regulating winding 8, calibration input coil 3 and molybdenum permalloy magnetic core；
It is separated between the magnetic core and shielding shell by insulating materials.
The material of the shielding shell is aluminium.
In some embodiments, as shown in Figure 1, Figure 2, Figure 3 shows, the sensor is mutually butted by two c-type structures；
The sensor includes two c-type magnetic cores, is arranged with the multistage regulating winding lifted one's head on one of magnetic core, on another magnetic core
It is arranged with calibration input coil；Magnet 5 is embedded on two c-type structure interface corresponding positions；For passing through the magnet 5
It is quickly connected.
To reduce wall thickness inside and outside sensor, using molybdenum permalloy magnetic core 4, molybdenum permalloy has outstanding magnetic special
Property, suitable for the coupling of high-frequency signal, the magnetic core of 10mm thickness can meet the requirement such as frequency band, transfer impedance.Select molybdenum slope
Wall thickness can not accomplish 22mm inside and outside the sensor of alloy core, can be mounted at the gap between ground line and pillar,
The length and width of sensor internal opening are designed as 22*110mm, can be installed on the earthing bar of various width.
It is protected outside molybdenum permalloy magnetic core 4 by shielding shell 7, and shields external electromagnetic interference signal.
It is arranged with the multistage regulating winding 8 lifted one's head on molybdenum permalloy magnetic core 4,1 switch line of adjusting knob can be passed through
Circle the number of turns changes inductance to export the signals of different amplitudes and different frequency bands, regulating winding 8 it is multiple lift one's head be respectively welded
On the terminal of adjusting knob, the frequency range of sensor is 1MHz ~ 100MHz, can be for interference and electric discharge letter when scene uses
Number frequency characteristic and amplitude adjust suitable inductance value.8 final output end of regulating winding is connected to the output of BNC signal through lead
Interface 6.It is wound with calibration input coil 3 on the magnetic core of the other side and is connected to calibration input interface 2, calibration input interface 2 can be passed through
Injection Signal demarcates sensor.
Sensor is whole by upper and lower two c-type structure compositions, by the high-strength of the diameter 10mm that is embedded on two joint faces
Degree magnet is quickly connected, and is more suitable for live use.Sensor internal is integrated poured by casting glue, improves the machinery of sensor
Intensity and insulation performance.
In some embodiments, as shown in Figure 1 and Figure 2, wall thickness 22mm, opening size 22* inside and outside 7 broadside of shell are shielded
110mm, the molybdenum permalloy magnetic core 4 of inside installation thickness 10mm, is wound with the multistage adjusting lifted one's head on molybdenum permalloy magnetic core 4
Coil 8, regulating winding 8 is by 0.5mm2Enameled wire coiling form, lifting one's head is connected to adjusting knob 1 and carries out segmentation selection, finally
Signal output interface 6 is connected to from the common end of regulating winding.Calibration input coil 3 is connected to calibration input interface 2.Coil around
System before 4 corresponding position of molybdenum permalloy magnetic core winding insulating tape prevent coil and magnetic core short circuit, molybdenum permalloy magnetic core 4 with
Shielding shell 7 is separated by insulating materials and prevents from directly contacting, and is finally shielded and is filled inside shell 7 by casting glue.At upper and lower two
The high-intensitive magnet 5 that diameter 10mm is embedded on interface is quickly connected.
Detection sensor is put in the part that the present invention is suitable for high-tension current inductor, using high-frequency pulse current magnetic field coupling
Method, the detection to the local discharge signal of high-tension current inductor is realized, its main feature is that detection sensitivity is high；Frequency band amplitude
It is adjustable；For the design feature design of high-tension current inductor, it is easily installed.
In the description of the present application, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown is only the present invention and simplified description for ease of description, rather than indicates or imply signified device
Or element must have a particular orientation, construct and operate for specific orientation, thus should not be understood as in present invention protection
The limitation of appearance.
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, under the premise of not departing from original of the invention, several improvements and modifications can also be made, these improvements and modifications should also regard
For protection scope of the present invention.
Claims (10)
1. a kind of partial discharge detecting sensor, it is characterised in that: outer including adjusting knob, magnetic core, signal output interface, shielding
Shell, regulating winding；
The sensor internal is provided with opening, for being mounted in the ground line of high-voltage mutual inductor by the open card；
The magnetic core setting is in shielding shell；
The magnetic core uses molybdenum permalloy magnetic core, and the multistage regulating winding lifted one's head is arranged on molybdenum permalloy magnetic core, described
Each of regulating winding, which is lifted one's head, to be connected on the adjusting knob, for changing electricity by adjusting knob switching coil the number of turns
Sensibility reciprocal is to export the signal of different amplitudes and different frequency bands；The final output end of regulating winding is connected to signal output interface.
2. partial discharge detecting sensor according to claim 1, it is characterised in that: further include calibration input interface, school
Quasi- input coil is arranged with calibration input coil on another molybdenum permalloy magnetic core, and the calibration input coil is connected to school
Quasi- input interface；For being demarcated by calibration input interface Injection Signal to sensor.
3. partial discharge detecting sensor according to claim 1, it is characterised in that: the sensor is by two c-type knots
Structure is mutually butted；The sensor includes two c-type magnetic cores, and the multistage adjusting line lifted one's head is arranged on one of magnetic core
It encloses, is arranged with calibration input coil on another magnetic core；Magnet is embedded on two c-type structure interface corresponding positions；With
It is quickly connected in by the magnet.
4. partial discharge detecting sensor according to claim 2, it is characterised in that: the calibration input coil and molybdenum slope
It is not provided with insulating part between alloy core, it is short-circuit between calibration input coil and molybdenum permalloy magnetic core for preventing.
5. partial discharge detecting sensor according to claim 1, it is characterised in that: it is outer that shielding is arranged outside the magnetic core
Shell for protecting to magnetic core, and shields external electromagnetic interference signal.
6. partial discharge detecting sensor according to claim 1, it is characterised in that: between the magnetic core and shielding shell
It is separated by insulating materials.
7. partial discharge detecting sensor according to claim 1, it is characterised in that: the regulating winding and molybdenum perm close
It is provided with insulating part between golden magnetic core, it is short-circuit between regulating winding and molybdenum permalloy magnetic core for preventing.
8. partial discharge detecting sensor according to claim 1, it is characterised in that: it is described shielding shell material be
Aluminium.
9. partial discharge detecting sensor according to claim 3, it is characterised in that: the diameter of the magnet is 10mm.
10. -9 described in any item partial discharge detecting sensors according to claim 1, it is characterised in that: the ruler of the opening
Very little is 22 mm * 110mm；The molybdenum permalloy core thickness is 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631580.9A CN109655723B (en) | 2018-12-29 | 2018-12-29 | Partial discharge detection sensor for high-voltage current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631580.9A CN109655723B (en) | 2018-12-29 | 2018-12-29 | Partial discharge detection sensor for high-voltage current transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109655723A true CN109655723A (en) | 2019-04-19 |
| CN109655723B CN109655723B (en) | 2024-03-08 |
Family
ID=66118154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631580.9A Active CN109655723B (en) | 2018-12-29 | 2018-12-29 | Partial discharge detection sensor for high-voltage current transformer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508137A (en) * | 2011-12-23 | 2012-06-20 | 保定天威集团有限公司 | Partial discharge detection pulse current sensor with self correcting function |
| CN205920148U (en) * | 2016-05-20 | 2017-02-01 | 国家电网公司 | High frequency current sensor for measurement of partial discharge |
| CN207068632U (en) * | 2017-06-22 | 2018-03-02 | 中领世能（天津）科技有限公司 | R types transformer and over-pressure safety device |
| CN207301240U (en) * | 2017-07-03 | 2018-05-01 | 国网山东省电力公司检修公司 | The sensor of for transformer built-in electrical insulation defects detection |
| CN208283508U (en) * | 2018-06-14 | 2018-12-25 | 上海格鲁布科技有限公司 | A kind of device for Partial Discharge Detection |
| CN209707638U (en) * | 2018-12-29 | 2019-11-29 | 国网江苏省电力有限公司电力科学研究院 | A kind of partial discharge detecting sensor for high-tension current inductor |
-
2018
- 2018-12-29 CN CN201811631580.9A patent/CN109655723B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508137A (en) * | 2011-12-23 | 2012-06-20 | 保定天威集团有限公司 | Partial discharge detection pulse current sensor with self correcting function |
| CN205920148U (en) * | 2016-05-20 | 2017-02-01 | 国家电网公司 | High frequency current sensor for measurement of partial discharge |
| CN207068632U (en) * | 2017-06-22 | 2018-03-02 | 中领世能（天津）科技有限公司 | R types transformer and over-pressure safety device |
| CN207301240U (en) * | 2017-07-03 | 2018-05-01 | 国网山东省电力公司检修公司 | The sensor of for transformer built-in electrical insulation defects detection |
| CN208283508U (en) * | 2018-06-14 | 2018-12-25 | 上海格鲁布科技有限公司 | A kind of device for Partial Discharge Detection |
| CN209707638U (en) * | 2018-12-29 | 2019-11-29 | 国网江苏省电力有限公司电力科学研究院 | A kind of partial discharge detecting sensor for high-tension current inductor |
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| CN109655723B (en) | 2024-03-08 |
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