CN104267235A - Hoop voltage sensing device - Google Patents
Hoop voltage sensing device Download PDFInfo
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- CN104267235A CN104267235A CN201410440853.7A CN201410440853A CN104267235A CN 104267235 A CN104267235 A CN 104267235A CN 201410440853 A CN201410440853 A CN 201410440853A CN 104267235 A CN104267235 A CN 104267235A
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Abstract
The invention discloses a hoop voltage sensing device. The hoop voltage sensing device comprises an incoming and outgoing line casing pipe, the incoming and outgoing line casing pipe comprises an epoxy insulator, the epoxy insulator is of a hollow structure from top to bottom, a conducting rod is installed in the hollow structure, hoop high-voltage capacitors are installed at the solid portions on the two sides of the part, not the hollow structure, of the epoxy insulator, the hoop high-voltage capacitors are electrically connected with the conducting rod, the adjacent outer side of one of the hoop high-voltage capacitors is provided with a lead end installed in the solid portion of the epoxy insulator, the lead end is provided with an electric lead connected with the hoop high-voltage capacitors, the other end of the electric lead is connected with a low-voltage capacitor device, and the low-voltage capacitor device is connected with a signal processing module connected with a control unit of a switchgear. The hoop voltage sensing device is small in space occupation, influence on electric field distribution in an original environment of an electrical element is small, the measurement precision is high, the temperature and frequency features are good, and the cost is 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 required integrated more perception and measuring sensor gradually, so that switchgear can realize more useful function, the impact of current comprehensive construction cost, installing space, the factor such as easy to maintenance, switchgear adopts the high-accuracy voltage sensing device of more compact structure to replace voltage transformer (VT) to become future thrust as voltage perception and measuring sensor.
In field of distribution network, voltage sensing device mainly contains electric resistance partial pressure and capacitance partial pressure two type.Wherein, the voltage sensing device structure of capacitance partial pressure type is simple, and security is better, and production cost is low, has application prospect widely.The high-voltage capacitance of the voltage sensing device of capacitance partial pressure type mainly contains two types, one is prefabrication type, i.e. first prefabricated high-voltage capacitance fuse, form a complete electrical equipment during application more as required with other incorporating aspects, voltage measurement accuracy is required that higher voltage sensing device all adopts this mode of production usually; Another is induction net type, when namely producing electrical equipment, using the high-pressure polar plate of existing for element high-pressure conductive body as high-voltage capacitance, embedded metal induction net is as the low pressure pole plate of high-voltage capacitance in addition, to the general supporting such voltage sensing device of the less demanding electrification display of voltage measurement accuracy.
But, electric resistance partial pressure or prefabrication type capacitance partial pressure voltage sensing device all have employed solid construction, can only be integrated with the insulating part of the support of switchgear or motion during application, and can easily not integrate with the requisite current turn-on component of switchgear (as bushing, vacuum interrupter etc.), take up room many, range of application is more limited, and large on original Electric Field Distribution impact, overall cost is high.Induction net type capacitance partial pressure voltage sensing device due to the instability of plate material specific inductive capacity and mismachining tolerance large, capacitance parameter is restive, and be easily subject to the impact of the factor such as temperature, frequency and produce acute variation, causing the non-constant of voltage measurement accuracy.
Summary of the invention
For solving the problem, the object of the present invention is to provide a kind of annular voltage sensing device, not only can integrate with the insulating part of the support of switchgear or motion, also can integrate with the diversion member of switchgear, and occupy little space, little on the original Electric Field Distribution impact in conducting element environment, measuring accuracy is high, temperature and frequency characteristic good, cost is lower.
The present invention solves the technical scheme that its problem adopts:
A kind of annular voltage sensing device, comprise inlet-outlet sleeve, described inlet-outlet sleeve comprises epoxy insulator, described epoxy insulator is hollow structure from the top to the bottom, described hollow structure is provided with conducting rod, annular high voltage electric capacity is separately installed with in the entity of the both sides of described epoxy insulator non-hollow structure, and described annular high voltage electric capacity is all electrically connected with conducting rod, next-door neighbour's arranged outside of one of them annular high voltage electric capacity described has the lead end be installed in epoxy insulator entity, described lead end is provided with the electrical lead wire be connected with annular high voltage electric capacity, the described electrical lead wire other end connects low-voltage capacitance device, described low-voltage capacitance device is connected with the signal processing module be simultaneously connected with the control module of switchgear.
Further, described annular high voltage electric capacity comprises ring-shaped pottery insulator, the inside surface of described ring-shaped pottery insulator is nested with annular first electrode, the outside surface of described ring-shaped pottery insulator is nested with annular second electrode, described annular first electrode and conducting rod are electrically connected, described lead end is arranged at outside the next-door neighbour of corresponding described annular second electrode, and described electrical lead wire and corresponding annular the second Electrode connection.
Further, described electrical lead wire is screwed into lead end inside by bolt, nested bullet pad and plain cushion successively on described bolt.
Further, described low-voltage capacitance device comprises shell, and described enclosure is provided with silicon rubber insulation body, and described silicon rubber insulation body inside is provided with low-voltage capacitance, one end of described low-voltage capacitance is connected with electrical lead wire and signal processing module respectively, the other end ground connection of described low-voltage capacitance.
Further, the both sides of described low-voltage capacitance are parallel with the voltage protection module for protecting low-voltage capacitance.
Further, described ring-shaped pottery insulator is fired structure by complex phase rare earth material powder and is formed, and described annular first electrode and annular second electrode adopt by the high-purity silverskin of silver-colored method technique burning infiltration inside and outside ring-shaped pottery insulator correspondence on anchor ring.
Further, next-door neighbour's arranged outside of described another one annular high voltage electric capacity is installed in epoxy insulator entity, and with corresponding annular the second electrode insulation the fixed terminal for installing.
The invention has the beneficial effects as follows:
The present invention adopts a kind of annular voltage sensing device, can integrate with the insulating part of the support of switchgear or motion, expands range of application; Annular voltage sensing device designed by the present invention takes up room little, in the original environment of electrical equipment Electric Field Distribution impact little, measuring accuracy is high, temperature and frequency characteristic good, cost is lower.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the invention will be further described.
Fig. 1 is the structural representation of annular voltage sensing device of the present invention;
Fig. 2 is circuit theory schematic diagram of the present invention.
Embodiment
With reference to shown in Fig. 1 and Fig. 2, the invention provides a kind of annular voltage sensing device, comprise inlet-outlet sleeve 1, described inlet-outlet sleeve 1 comprises epoxy insulator 2, described epoxy insulator 2 is hollow structure from the top to the bottom, described hollow structure is provided with conducting rod 3, annular high voltage electric capacity 4 is separately installed with in the entity of the both sides of described epoxy insulator 2 non-hollow structure, and described annular high voltage electric capacity 4 is all electrically connected with conducting rod 3, next-door neighbour's arranged outside of one of them annular high voltage electric capacity 4 described has the lead end 5 be installed in epoxy insulator 2 entity, described lead end 5 is provided with the electrical lead wire 6 be connected with annular high voltage electric capacity 4, described electrical lead wire 6 other end connects low-voltage capacitance device 7, described low-voltage capacitance device 7 is connected with the signal processing module 8 be simultaneously connected with the control module of switchgear.
In the present invention, described annular high voltage electric capacity 4 comprises ring-shaped pottery insulator 9, the inside surface of described ring-shaped pottery insulator 9 is nested with annular first electrode 10, the outside surface of described ring-shaped pottery insulator 9 is nested with annular second electrode 11, described annular first electrode 10 is electrically connected with conducting rod 4, described lead end 5 is arranged at outside the next-door neighbour of corresponding described annular second electrode 11, and described electrical lead wire 6 connects with corresponding annular the second electrode 11.Wherein, described ring-shaped pottery insulator 9 is fired structure by complex phase rare earth material powder and is formed, and described annular first electrode 10 and annular second electrode 11 adopt by the high-purity silverskin of silver-colored method technique burning infiltration on the corresponding inside and outside anchor ring of ring-shaped pottery insulator 9.Ring-shaped pottery insulator 9 is owing to being ceramics construction, and therefore, ring-shaped pottery insulator 9 is higfh-tension ceramics electric capacity, and its specific inductive capacity is very large, and it is smaller that polar plate area can do, and the overall volume of annular high voltage electric capacity 4 is reduced, and reduces corresponding cost simultaneously.Adopt Ceramic high-pressure electric capacity, make the characteristic of high-voltage capacitance 4 more stable, under normal condition, its life-span is considerably beyond the life-span of switch.
In order to holding electrical lead-in wire 6, it is inner that described electrical lead wire 6 is screwed into lead end 5 by bolt 12, nested bullet pad 13 and plain cushion 14 successively on described bolt 12.The setting of described electrical lead wire 6, simple and convenient, only by nut, safeguard simpler and easy.
The present invention is when designing low-voltage capacitance device 7, described low-voltage capacitance device 7 comprises shell 15, described shell 15 inside is provided with silicon rubber insulation body 16, described silicon rubber insulation body 16 inside is provided with low-voltage capacitance 17, one end of described low-voltage capacitance 17 is connected with electrical lead wire 6 and signal processing module 8 respectively, the other end ground connection of described low-voltage capacitance 17.In order to protect low-voltage capacitance 17, the both sides of described low-voltage capacitance 17 are parallel with the voltage protection module 18 for protecting low-voltage capacitance 17.
For the ease of the installation of annular voltage sensing device of the present invention, be installed in epoxy insulator 2 entity in next-door neighbour's arranged outside of another one annular high voltage electric capacity 4, and with the fixed terminal 19 for installing that insulate of corresponding annular the second electrode 11.By fixed terminal 19, can conveniently annular voltage sensing device of the present invention be installed on switchgear.
Annular high voltage electric capacity 4 of the present invention and low-voltage capacitance device 7 take up room little, in the original environment of electrical equipment Electric Field Distribution impact little, the present invention, through practical application, has measuring accuracy high, temperature and frequency characteristic good, the features such as cost is low.
Annular voltage sensing device provided by the present invention not only can integrate with the insulating part of the support of switchgear or motion, also can integrate with switchgear element of conducting a sightseeing tour, greatly extend range of application.
It should be noted that, because the formula of rare earth material is very complicated, very high to technological requirements such as the temperature fired, times, domestic not yet see even in the world-40 DEG C ~ 70 DEG C temperature range and in 1kV ~ 10kV voltage range time, insulating property reach 10kV grid requirements, and variation in capacitance value can be less than ± specific implementation of the higfh-tension ceramics electric capacity of 3%.And higfh-tension ceramics electric capacity of the present invention can reach.
The above, just preferred embodiment of the present invention, the present invention is not limited to above-mentioned embodiment, as long as it reaches technique effect of the present invention with identical means, all should belong to protection scope of the present invention.
Claims (7)
1. an annular voltage sensing device, it is characterized in that, comprise inlet-outlet sleeve (1), described inlet-outlet sleeve (1) comprises epoxy insulator (2), described epoxy insulator (2) is hollow structure from the top to the bottom, described hollow structure is provided with conducting rod (3), annular high voltage electric capacity (4) is separately installed with in the entity of the both sides of described epoxy insulator (2) non-hollow structure, and described annular high voltage electric capacity (4) is all electrically connected with conducting rod (3), next-door neighbour's arranged outside of one of them annular high voltage electric capacity (4) described has the lead end (5) be installed in epoxy insulator (2) entity, described lead end (5) is provided with the electrical lead wire (6) be connected with annular high voltage electric capacity (4), described electrical lead wire (6) other end connects low-voltage capacitance device (7), described low-voltage capacitance device (7) is connected with the signal processing module (8) be simultaneously connected with the control module of switchgear.
2. annular voltage sensing device according to claim 1, it is characterized in that, described annular high voltage electric capacity (4) comprises ring-shaped pottery insulator (9), the inside surface of described ring-shaped pottery insulator (9) is nested with annular first electrode (10), the outside surface of described ring-shaped pottery insulator (9) is nested with annular second electrode (11), described annular first electrode (10) and conducting rod (4) are electrically connected, described lead end (5) is arranged at outside the next-door neighbour of corresponding described annular second electrode (11), and described electrical lead wire (6) connects with corresponding annular the second electrode (11).
3. annular voltage sensing device according to claim 1 and 2, is characterized in that, it is inner that described electrical lead wire (6) is screwed into lead end (5) by bolt (12), nested bullet pad (13) and plain cushion (14) successively on described bolt (12).
4. annular voltage sensing device according to claim 1 and 2, it is characterized in that, described low-voltage capacitance device (7) comprises shell (15), described shell (15) inside is provided with silicon rubber insulation body (16), described silicon rubber insulation body (16) inside is provided with low-voltage capacitance (17), one end of described low-voltage capacitance (17) is connected with electrical lead wire (6) and signal processing module (8) respectively, the other end ground connection of described low-voltage capacitance (17).
5. annular voltage sensing device according to claim 4, is characterized in that, the both sides of described low-voltage capacitance (17) are parallel with the voltage protection module (18) for protecting low-voltage capacitance (17).
6. annular voltage sensing device according to claim 2, it is characterized in that, described ring-shaped pottery insulator (9) is fired structure by complex phase rare earth material powder and is formed, and described annular first electrode (10) and annular second electrode (11) adopt by the high-purity silverskin of silver-colored method technique burning infiltration on the corresponding inside and outside anchor ring of ring-shaped pottery insulator (9).
7. annular voltage sensing device according to claim 2, it is characterized in that, next-door neighbour's arranged outside of described another one annular high voltage electric capacity (4) is installed in epoxy insulator (2) entity, and with corresponding annular the second electrode (11) fixed terminal (19) for installing that insulate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410440853.7A CN104267235B (en) | 2014-09-01 | 2014-09-01 | A kind of annular voltage sensing device |
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| CN201410440853.7A CN104267235B (en) | 2014-09-01 | 2014-09-01 | A kind of annular voltage sensing device |
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| CN104267235B CN104267235B (en) | 2017-09-29 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116211A (en) * | 2015-08-27 | 2015-12-02 | 珠海许继电气有限公司 | Suspension type phase voltage measurement device |
| 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 |
| CN112393817A (en) * | 2020-10-23 | 2021-02-23 | 许继集团有限公司 | Capacitive temperature-sensitive element integrated in a high-voltage bushing and high-voltage bushing |
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| 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 |
| WO2014019692A1 (en) * | 2012-08-03 | 2014-02-06 | Abb Technology Ag | Voltage measurement device with an insulating body |
| 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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2014
- 2014-09-01 CN CN201410440853.7A patent/CN104267235B/en active Active
Patent Citations (8)
| 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 |
| WO2014019692A1 (en) * | 2012-08-03 | 2014-02-06 | Abb Technology Ag | Voltage measurement device with an insulating body |
| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105116211A (en) * | 2015-08-27 | 2015-12-02 | 珠海许继电气有限公司 | Suspension type phase voltage measurement device |
| 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 |
| CN112393817A (en) * | 2020-10-23 | 2021-02-23 | 许继集团有限公司 | Capacitive temperature-sensitive element integrated in a high-voltage bushing and high-voltage bushing |
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| CN104267235B (en) | 2017-09-29 |
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