CN104267235B - A kind of annular voltage sensing device - Google Patents
A kind of annular voltage sensing device Download PDFInfo
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- CN104267235B CN104267235B CN201410440853.7A CN201410440853A CN104267235B CN 104267235 B CN104267235 B CN 104267235B CN 201410440853 A CN201410440853 A CN 201410440853A CN 104267235 B CN104267235 B CN 104267235B
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- electric capacity
- sensing device
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- 239000012212 insulator Substances 0.000 claims abstract description 37
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004593 Epoxy Substances 0.000 claims abstract description 19
- 238000010276 construction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000001764 infiltration Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 7
- 230000005684 electric field Effects 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 description 5
- 230000005611 electricity Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000008447 perception Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses a kind of annular voltage sensing device, including inlet-outlet sleeve, the inlet-outlet sleeve includes epoxy insulator, the epoxy insulator is hollow structure from the top to the bottom, the hollow structure is provided with conducting rod, annular high voltage electric capacity is separately installed with the entity of the both sides of the epoxy insulator non-hollow structure, and the annular high voltage electric capacity is electrically connected with conducting rod, one of them annular high voltage electric capacity is provided with the lead end being installed in epoxy insulator entity close to outside, the lead end is provided with the electrical lead wire with annular high voltage capacitance connection, the electrical lead wire other end connects low-voltage capacitance device, the low-voltage capacitance device is connected with the signal processing module while being connected with the control unit of switchgear.Annular voltage sensing device designed by the present invention occupies little space, small on the Electric Field Distribution influence in the original environment of electrical equipment, and measurement accuracy is high, and temperature and frequency characteristic are good, and cost is relatively low.
Description
Technical field
The present invention relates to the voltage sensing device in switchgear, particularly a kind of annular voltage sensing device.
Background technology
In the process of construction of distribution automation, switchgear is gradually required integrated more perception and measuring cell,
So that switchgear can realize more useful functions, the shadow of the factor such as current comprehensive construction cost, installing space, easy to maintenance
Ring, switchgear replaces voltage transformer as voltage using the high-accuracy voltage sensing device of more compact structure and perceives and measure
Element turns into future thrust.
In field of distribution network, voltage sensing device mainly has electric resistance partial pressure and capacitance partial pressure two types.Wherein, electric capacity point
Press the voltage sensing device of type simple in construction, more preferably, production cost is low, with wider application prospect for security.Electric capacity
The high-voltage capacitance of the voltage sensing device of partial pressure type mainly has two types, and one kind is prefabrication type, i.e., prefabricated first high pressure
Capacitor core, using when further according to need combine to form a complete electrical equipment with other parts, to voltage measurement accuracy
It is required that higher voltage sensing device typically each uses this mode of production；Another is sensing net type, that is, is produced electric
During element, using the existing high-pressure conductive body of element as the high-pressure polar plate of high-voltage capacitance, a metal sensing net is embedded in addition and is made
For the low pressure pole plate of high-voltage capacitance, to the general supporting such voltage of the less demanding electrification display of voltage measurement accuracy
Sensing device.
But, electric resistance partial pressure or prefabrication type capacitance partial pressure voltage sensing device all employ solid construction, using when only
Can be integrated with the insulating part of support or the motion of switchgear, without current lead-through that can easily be essential with switchgear
Element (such as bushing, vacuum interrupter) is integrated, and space-consuming is more, and application is than relatively limited, to original electricity
Field distribution influence is big, and overall cost is high.Sense net type capacitance partial pressure voltage sensing device due to plate material dielectric constant not
Stable and mismachining tolerance is big, and capacitance parameter is difficult to control, and is easily influenceed and produced acutely by factors such as temperature, frequencies
Change, causes voltage measurement accuracy excessively poor.
The content of the invention
To solve the above problems, it is an object of the invention to provide a kind of annular voltage sensing device, not only can be with switch
The insulating part of support or the motion of equipment is integrated, and can also be integrated with the diversion member of switchgear, and is taken
Space is few, small on original Electric Field Distribution influence in conducting element environment, and measurement accuracy is high, and temperature and frequency characteristic are good, into
This is more low.
The present invention solves the technical scheme that is used of its problem：
A kind of annular voltage sensing device, including inlet-outlet sleeve, the inlet-outlet sleeve include epoxy insulator, described
Epoxy insulator is from the top to the bottom hollow structure, and the hollow structure is provided with conducting rod, during the epoxy insulator is non-
Annular high voltage electric capacity is separately installed with the entity of the both sides of hollow structure, and the annular high voltage electric capacity electrically connects with conducting rod
Connect, one of them the annular high voltage electric capacity is provided with the lead end being installed in epoxy insulator entity, institute close to outside
State lead end and be provided with electrical lead wire with annular high voltage capacitance connection, the electrical lead wire other end connection low tension is contained
Put, the low-voltage capacitance device is connected with the signal processing module while being connected with the control unit of switchgear.
Further, the annular high voltage electric capacity includes ring-shaped pottery insulator, the inner surface of the ring-shaped pottery insulator
Annular first electrode is nested with, the outer surface of the ring-shaped pottery insulator is nested with annular second electrode, described annular first
Electrode and conducting rod are electrically connected, the lead end be arranged at the correspondence annular second electrode close to outside, and the electricity
Gas lead is connected with corresponding annular second electrode.
Further, the electrical lead wire is screwed into inside lead end by bolt, on the bolt successively nested spring washer and
Plain cushion.
Further, the low-voltage capacitance device includes shell, and the enclosure is provided with silicon rubber insulation body, the silicon
Low-voltage capacitance is installed, one end of the low-voltage capacitance connects with electrical lead wire and signal processing module respectively inside rubber insulator
Connect, the other end ground connection of the low-voltage capacitance.
Further, the both sides of the low-voltage capacitance are parallel with the voltage protection module for being protected to low-voltage capacitance.
Further, the ring-shaped pottery insulator is fired construction by complex phase rare earth material powder and formed, and described annular first
Electrode is to use the high-purity by silver-colored method technique burning infiltration inside and outside ring-shaped pottery insulator is corresponding on anchor ring with annular second electrode
Silverskin.
Further, being provided with close to outside for another the annular high voltage electric capacity is installed on epoxy insulator entity
It is interior, and the fixing terminal for being used to install insulated with corresponding annular second electrode.
The beneficial effects of the invention are as follows：
The present invention uses a kind of annular voltage sensing device, can be integrated with the insulating part of support or the motion of switchgear
Together, application is expanded；Annular voltage sensing device designed by the present invention occupies little space, to the original ring of electrical equipment
Electric Field Distribution influence in border is small, and measurement accuracy is high, and temperature and frequency characteristic are good, and cost is relatively low.
Brief description of the drawings
The invention will be further described with example below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of annular voltage sensing device of the present invention；
Fig. 2 is the circuit theory schematic diagram of the present invention.
Embodiment
Shown in reference picture 1 and Fig. 2, the invention provides a kind of annular voltage sensing device, including inlet-outlet sleeve 1, institute
Stating inlet-outlet sleeve 1 includes epoxy insulator 2, and the epoxy insulator 2 is hollow structure, the hollow knot from the top to the bottom
Structure is provided with conducting rod 3, the entity of the both sides of the non-hollow structure of epoxy insulator 2 and is separately installed with annular high voltage electric capacity
4, and the annular high voltage electric capacity 4 is electrically connected with conducting rod 3, one of annular high voltage electric capacity 4 is set close to outside
There is a lead end 5 being installed in the entity of epoxy insulator 2, the lead end 5 is provided be connected with annular high voltage electric capacity 4 electric
Lead 6, the other end of electrical lead wire 6 connection low-voltage capacitance device 7, the low-voltage capacitance device 7 be connected with simultaneously with switch
The signal processing module 8 of the control unit connection of equipment.
In the present invention, the annular high voltage electric capacity 4 include ring-shaped pottery insulator 9, the ring-shaped pottery insulator 9 it is interior
Surface is nested with annular first electrode 10, and the outer surface of the ring-shaped pottery insulator 9 is nested with annular second electrode 11, described
Annular first electrode 10 is electrically connected with conducting rod 4, the lead end 5 be arranged at the correspondence annular second electrode 11 close to
Outside, and the electrical lead wire 6 connects with corresponding annular second electrode 11.Wherein, the ring-shaped pottery insulator 9 is dilute by complex phase
Soil material powder is fired construction and formed, and the annular first electrode 10 and annular second electrode 11 are used by silver-colored method technique burning infiltration
High-purity silverskin on the inside and outside anchor ring of the correspondence of ring-shaped pottery insulator 9.Ring-shaped pottery insulator 9 due to being ceramics construction, because
This, ring-shaped pottery insulator 9 is higfh-tension ceramics electric capacity, and its dielectric constant is very big, and it is smaller that polar plate area can be done, and makes ring
The overall volume of shape high-voltage capacitance 4 reduces, while reducing corresponding cost.Using Ceramic high-pressure electric capacity, make the spy of high-voltage capacitance 4
Property more stablize, under normal condition, life-span of its life-span considerably beyond switch.
For holding electrical lead 6, the electrical lead wire 6 is screwed into inside lead end 5 by bolt 12, the bolt 12
On nested spring washer 13 and plain cushion 14 successively.The setting of the electrical lead wire 6, it is simple and convenient, only by nut, safeguard simpler
Easily.
The present invention to low-voltage capacitance device 7 when being designed, and the low-voltage capacitance device 7 includes shell 15, described outer
It is provided with inside shell 15 inside silicon rubber insulation body 16, the silicon rubber insulation body 16 and low-voltage capacitance 17, the low pressure is installed
One end of electric capacity 17 is connected with electrical lead wire 6 and signal processing module 8 respectively, the other end ground connection of the low-voltage capacitance 17.For
Protection low-voltage capacitance 17, the both sides of the low-voltage capacitance 17 are parallel with the voltage protection for being protected to low-voltage capacitance 17
Module 18.
For the ease of the installation of annular voltage sensing device of the present invention, in the tight of another annular high voltage electric capacity 4
Adjacent outside, which is provided with, to be installed in the entity of epoxy insulator 2, and with the corresponding annular insulation of second electrode 11 for consolidating for installing
Fixed end 19.By fixing terminal 19, it can facilitate and annular voltage sensing device of the present invention is installed on switchgear.
The annular high voltage electric capacity 4 and low-voltage capacitance device 7 of the present invention occupies little space, in the original environment of electrical equipment
Electric Field Distribution influence is small, and the present invention is high with measurement accuracy through practical application, and temperature and frequency characteristic are good, the low spy of cost
Point.
Annular voltage sensing device provided by the present invention not only can be integrated with the insulating part of support or the motion of switchgear
Together, it can also be integrated with switchgear guide's element, greatly extend application.
It should be noted that because the formula of rare earth material is extremely complex, the technological requirement such as temperature, time to firing is non-
Chang Gao, it is domestic even not yet see in the world -40 DEG C~70 DEG C temperature range and in 1kV~10kV voltage ranges, absolutely
Edge performance reaches 10kV grid requirements, and variation in capacitance value can be less than implementing for ± 3% higfh-tension ceramics electric capacity.And this hair
Bright used higfh-tension ceramics electric capacity can but reach.
It is described above, simply presently preferred embodiments of the present invention, the invention is not limited in above-mentioned embodiment, as long as
It reaches the technique effect of the present invention with identical means, should all belong to protection scope of the present invention.
Claims (6)
1. a kind of annular voltage sensing device, it is characterised in that including inlet-outlet sleeve (1), the inlet-outlet sleeve (1) includes
Epoxy insulator (2), the epoxy insulator (2) is hollow structure from the top to the bottom, and the hollow structure is provided with conduction
Annular high voltage electric capacity (4), and institute are separately installed with bar (3), the entity of the both sides of epoxy insulator (2) the non-hollow structure
Annular high voltage electric capacity (4) is stated to be electrically connected with conducting rod (3), one of them annular high voltage electric capacity (4) close to outside
The lead end (5) being installed in epoxy insulator (2) entity is provided with, the lead end (5) is provided with and annular high voltage electric capacity
(4) electrical lead wire (6) of connection, electrical lead wire (6) other end connection low-voltage capacitance device (7), the low tension is contained
Put (7) and be connected with the signal processing module (8) while being connected with the control unit of switchgear；
The annular high voltage electric capacity (4) includes ring-shaped pottery insulator (9), and the inner surface of the ring-shaped pottery insulator (9) is embedding
Annular first electrode (10) is cased with, the outer surface of the ring-shaped pottery insulator (9) is nested with annular second electrode (11), described
Annular first electrode (10) is electrically connected with conducting rod (3), and the lead end (5) is arranged at the correspondence annular second electrode
(11) close to outside, and the electrical lead wire (6) and corresponding annular second electrode (11) connect.
2. annular voltage sensing device according to claim 1, it is characterised in that the electrical lead wire (6) passes through bolt
(12) nested spring washer (13) and plain cushion (14) successively are screwed on lead end (5) inside, the bolt (12).
3. annular voltage sensing device according to claim 1, it is characterised in that the low-voltage capacitance device (7) includes
It is provided with inside silicon rubber insulation body (16), the silicon rubber insulation body (16) and installs inside shell (15), the shell (15)
There is low-voltage capacitance (17), one end of the low-voltage capacitance (17) is connected with electrical lead wire (6) and signal processing module (8) respectively,
The other end ground connection of the low-voltage capacitance (17).
4. annular voltage sensing device according to claim 3, it is characterised in that the both sides of the low-voltage capacitance (17) are simultaneously
It is associated with the voltage protection module (18) for being protected to low-voltage capacitance (17).
5. annular voltage sensing device according to claim 1, it is characterised in that the ring-shaped pottery insulator (9) by
Complex phase rare earth material powder is fired construction and formed, and the annular first electrode (10) and annular second electrode (11) are using silver-colored
High-purity silverskin of the method technique burning infiltration on the inside and outside anchor ring of ring-shaped pottery insulator (9) correspondence.
6. annular voltage sensing device according to claim 1, it is characterised in that another described annular high voltage electric capacity
(4) be provided with close to outside is installed in epoxy insulator (2) entity, and the use insulated with corresponding annular second electrode (11)
In the fixing terminal (19) of installation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440853.7A CN104267235B (en) | 2014-09-01 | 2014-09-01 | A kind of annular voltage sensing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410440853.7A CN104267235B (en) | 2014-09-01 | 2014-09-01 | A kind of annular voltage sensing device |
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| Publication Number | Publication Date |
|---|---|
| CN104267235A CN104267235A (en) | 2015-01-07 |
| CN104267235B true CN104267235B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410440853.7A Active CN104267235B (en) | 2014-09-01 | 2014-09-01 | A kind of annular voltage sensing device |
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| CN (1) | CN104267235B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116211B (en) * | 2015-08-27 | 2018-03-16 | 珠海许继电气有限公司 | A kind of floating type phase voltage measurement apparatus |
| CN112284562A (en) * | 2020-10-23 | 2021-01-29 | 许继集团有限公司 | Temperature measuring device and method applied to switch equipment |
| CN112393817B (en) * | 2020-10-23 | 2023-05-02 | 许继集团有限公司 | Capacitive temperature sensor integrated in high-voltage bushing and high-voltage bushing |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4125856C1 (en) * | 1991-08-03 | 1992-09-03 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart, De | |
| CN1858598A (en) * | 2005-05-02 | 2006-11-08 | 三菱电机株式会社 | Voltage check device for gas insulation apparatus |
| CN101187680A (en) * | 2007-10-24 | 2008-05-28 | 重庆大学 | AC power system voltage sensor |
| CN101458273A (en) * | 2008-12-26 | 2009-06-17 | 西北电网有限公司 | Sensor for measuring very fast transient overvoltage in GIS |
| CN103187158A (en) * | 2011-12-30 | 2013-07-03 | 陈永山 | Electronic type voltage transformer |
| CN103760402A (en) * | 2014-01-22 | 2014-04-30 | 重庆大学 | Three-phase voltage transformer based on D_dot principle and three-phase influence voltage compensating method |
| CN204142817U (en) * | 2014-09-01 | 2015-02-04 | 珠海许继电气有限公司 | A kind of annular voltage sensing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2693223B8 (en) * | 2012-08-03 | 2021-09-08 | ABB Schweiz AG | Voltage measurement device with an insulating body |
-
2014
- 2014-09-01 CN CN201410440853.7A patent/CN104267235B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4125856C1 (en) * | 1991-08-03 | 1992-09-03 | Karl Pfisterer Elektrotechnische Spezialartikel Gmbh & Co Kg, 7000 Stuttgart, De | |
| CN1858598A (en) * | 2005-05-02 | 2006-11-08 | 三菱电机株式会社 | Voltage check device for gas insulation apparatus |
| CN101187680A (en) * | 2007-10-24 | 2008-05-28 | 重庆大学 | AC power system voltage sensor |
| CN101458273A (en) * | 2008-12-26 | 2009-06-17 | 西北电网有限公司 | Sensor for measuring very fast transient overvoltage in GIS |
| CN103187158A (en) * | 2011-12-30 | 2013-07-03 | 陈永山 | Electronic type voltage transformer |
| CN103760402A (en) * | 2014-01-22 | 2014-04-30 | 重庆大学 | Three-phase voltage transformer based on D_dot principle and three-phase influence voltage compensating method |
| CN204142817U (en) * | 2014-09-01 | 2015-02-04 | 珠海许继电气有限公司 | A kind of annular voltage sensing device |
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| CN104267235A (en) | 2015-01-07 |
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