CN202614820U - Capacitance voltage divider used in gas insulated switchgear (GIS) - Google Patents
Capacitance voltage divider used in gas insulated switchgear (GIS) Download PDFInfo
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- CN202614820U CN202614820U CN 201220256970 CN201220256970U CN202614820U CN 202614820 U CN202614820 U CN 202614820U CN 201220256970 CN201220256970 CN 201220256970 CN 201220256970 U CN201220256970 U CN 201220256970U CN 202614820 U CN202614820 U CN 202614820U
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Abstract
The utility model provides a capacitance voltage divider used in a gas insulated switchgear (GIS). The capacitance voltage divider comprises a high-voltage electrode, a middle-voltage electrode, two basin-type insulators and an external capacitor, wherein the high-voltage electrode and the middle-voltage electrode are coaxial cylinders; the high-voltage electrode penetrates through the axis of the middle-voltage electrode; the middle-voltage electrode is fixed between the two basin-type insulators; insulation gas is sealed among the high-voltage electrode, the middle-voltage electrode and the two basin-type insulators; a high-voltage capacitor C1 is formed between the high-voltage electrode and the middle-voltage electrode; the external capacitor 4 is used as a low-voltage capacitor C2; and the high-voltage end of the external capacitor is connected with the middle-voltage electrode, and the low-voltage end of the external capacitor is grounded. By fully using the structure that a bus and a shell in the GIS are coaxial mechanically and electrically, the capacitance voltage divider is stable in insulation performance, and the insulation performance can be recovered; the insulation margin is large, the reliability is high, and a ferromagnetic resonance phenomenon is avoided; the high-voltage capacitor C1 is generated according to a theory that capacitance is generated because the bus and the shell in the GIS are electrically coaxial, so that extra capacitance elements or other relevant parts are not needed; the process and the structure are simple; the manufacturing cost is low; and the economical property is high.
Description
[technical field]
The utility model belongs to the High-Voltage Electrical Appliances field, and particularly a kind of condenser divider that is applied among the GIS (Cubicle Gas-Insulated Switchgear) is applicable to voltage measurement, control protection and electric energy metrical among the GIS.
[background technology]
At present; Widely used among the GIS is electromagnetic potential transformer; Electromagnetic potential transformer is prone to and electrical network generation ferroresonance; Thereby the voltage of electrical network primary equipment is raise, and along with the raising of electric pressure, the manufacture difficulty of electromagnetic potential transformer, technology, volume, cost also can be multiplied simultaneously.And traditional CVT (capacitance type potential transformer) mainly contains two kinds by the insulating medium branch, and a kind of is oil immersed type (coupling condenser), and another kind is a mylar SF6 gas-insulated composite structure (inflatable).More than two kinds of structures all not too be suitable for use among the GIS, if pack oil immersed type CVT among the GIS into, because the inner cause that is full of insulating oil; In a single day hermetically-sealed construction goes wrong; And be prone to pollute the GIS tank body, the maintenance of clean-up difficulty is bigger, and another defective of oil immersed type CVT is the potential danger that explosive combustion is arranged.Mylar SF6 gas-insulated composite structure CVT, bearing high-tension capacitive divider major insulation is organic insulation, is exactly nonvolatil in case insulation harm occurs, its insulating property cannot recovered.And traditional CVT is in series by up to a hundred capacitor elements, complex structure, and technology difficulty is big, if an element breaks down, is prone to cause other capacity cell of series connection with it to break down, and then is whole damage of product.
[utility model content]
The purpose of the utility model provides the condenser divider of a kind of GIS of being used for, solves GIS and is prone to and electrical network generation ferroresonance with voltage transformer (VT), and manufacturing process is difficult, problems such as cost height.
To achieve these goals, the utility model adopts following technical scheme:
A kind of condenser divider that is used for GIS comprises high-field electrode, the middle piezoelectricity utmost point, two disc insulators and plug-in capacitor device, and high-field electrode and middle piezoelectricity is the coaxial cylindrical structure very; High-field electrode passes the middle piezoelectricity pole axis heart; The middle piezoelectricity utmost point is fixed between two disc insulators, is sealed with insulating gas between high-field electrode, the middle piezoelectricity utmost point and two disc insulators; Constitute high-voltage capacitance C1 between high-field electrode, the middle piezoelectricity utmost point; Plug-in capacitor device 4 is as low-voltage capacitance C2, the piezoelectricity utmost point during its high-pressure side connects, low pressure end ground connection.
Preferably, the mounted on surface of high-field electrode have one with high-field electrode coaxial and idiostatic cover.
Preferably, said insulating gas is SF
6
Preferably, the condenser divider of the said GIS of being used for also comprises a plug-in electromagnetic unit, and said electromagnetic unit connects the said middle piezoelectricity utmost point.
Compared with prior art, the utlity model has following advantage:
A kind of condenser divider that is used for GIS of the utility model, based on proven technique among the GIS and technology, make full use of GIS median generatrix and housing machinery and electric coaxial structure, insulating medium is SF used among the GIS
6Gas, stable insulation also can be recovered, and insulation margin is big, and reliability is high; Operation the ferroresonance phenomenon can not occur on electrical network, and adjacent object, filth and relative humidity are less to the influence of error characteristics; High-voltage capacitance C1 utilizes GIS median generatrix and the housing principle of coaxial generation electric capacity electric to generate, and does not need extra increase capacity cell or other relevant parts, and technology and simple in structure, cost are extremely low, and economic performance is good.This condenser divider not only can be used as voltage divider and uses, and also can be used as sensor and uses, and is of many uses.
[description of drawings]
Fig. 1 is the structural representation of the utility model.
[embodiment]
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
The utility model is applicable among the GIS that as shown in Figure 1, the condenser divider of a kind of GIS of being used for of the utility model comprises high-field electrode 1, the middle piezoelectricity utmost point 2, disc insulator 3, plug-in capacitor device 4 (also can add plug-in electromagnetic unit) and cover 6.
Utilize the GIS median generatrix as high-field electrode 1; The middle piezoelectricity utmost point 2 is the part of GIS; Insulating gas 5 is an insulating gas used among the GIS, and plug-in capacitor device 4 is the lower capacitor of dielectric level, and disc insulator 3 is identical with GIS body dielectric level or be higher than GIS body dielectric level.
High-field electrode 1 is the coaxial cylindrical structure with the middle piezoelectricity utmost point 2, and high-field electrode 1 is on the center line of the middle piezoelectricity utmost point 2, in the middle of high-field electrode 1 and the middle piezoelectricity utmost point 2 insulation gas filled 3; Above-mentioned three constitutes high-voltage capacitance C1, and the size of high-voltage capacitance C1 is decided by the secondary output capacity, can reconcile the size of C1 through following dual mode; One: reconcile the distance between the disc insulator 3; Promptly reconcile the length through the high-field electrode 1 and the middle piezoelectricity utmost point 2, C1 increased when length increased, otherwise reduced.Two: under high voltage bus and the satisfactory situation of housing insulation margin; The sectional area that increases high voltage bus can make the C1 value increase; Specifically can be at the high voltage bus mounted on surface one that two disc insulators 3 the are isolated cover 6 coaxial with high voltage bus, for the reduction expense, the material of cover can be different from high voltage bus; But the electric conductivity of cover need approach the material of high voltage bus, and cover and high voltage bus are idiostatic simultaneously.
Plug-in capacitor device 4 is as low-voltage capacitance C2; Its value can be decided by the intrinsic standoff ratio of capacitive divider, and the high-pressure side of C2 links to each other with the middle piezoelectricity utmost point 2, and C2 is the extremely low capacitor of dielectric level simultaneously; Because C2 is hung on the GIS outside outward, oil immersed type or dry-type capacitor all can adopt.
The dielectric level of disc insulator 3 is identical with the dielectric level of GIS to get final product, if use as sensor, and can plug-in electromagnetic unit.
Although combine accompanying drawing that the utility model is described above; But the utility model is not limited to above-mentioned embodiment, and above-mentioned embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection of the utility model.
Claims (4)
1. a condenser divider that is used for GIS is characterized in that, comprises high-field electrode (1), the middle piezoelectricity utmost point (2), two disc insulators (3) and plug-in capacitor device (4), and the high-field electrode (1) and the middle piezoelectricity utmost point (2) are the coaxial cylindrical structure; High-field electrode (1) passes the middle piezoelectricity utmost point (2) axle center; The middle piezoelectricity utmost point (2) is fixed between two disc insulators (3), is sealed with insulating gas between high-field electrode (1), the middle piezoelectricity utmost point (2) and two disc insulators (3); Constitute high-voltage capacitance C1 between high-field electrode (1), the middle piezoelectricity utmost point (2); Plug-in capacitor device (4) is as low-voltage capacitance C2, the piezoelectricity utmost point (2) during its high-pressure side connects, low pressure end ground connection.
2. a kind of condenser divider that is used for GIS according to claim 1 is characterized in that, the mounted on surface of high-field electrode (1) have one with high-field electrode (1) coaxial and idiostatic cover (6).
3. a kind of condenser divider that is used for GIS according to claim 1 is characterized in that said insulating gas is SF
6
4. a kind of condenser divider that is used for GIS according to claim 1 is characterized in that the condenser divider of the said GIS of being used for also comprises a plug-in electromagnetic unit, and said electromagnetic unit connects the said middle piezoelectricity utmost point (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256970 CN202614820U (en) | 2012-06-01 | 2012-06-01 | Capacitance voltage divider used in gas insulated switchgear (GIS) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220256970 CN202614820U (en) | 2012-06-01 | 2012-06-01 | Capacitance voltage divider used in gas insulated switchgear (GIS) |
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| Publication Number | Publication Date |
|---|---|
| CN202614820U true CN202614820U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220256970 Expired - Lifetime CN202614820U (en) | 2012-06-01 | 2012-06-01 | Capacitance voltage divider used in gas insulated switchgear (GIS) |
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| CN (1) | CN202614820U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235166A (en) * | 2013-04-17 | 2013-08-07 | 清华大学 | Hand-hole type capacitive voltage divider |
| CN106856145A (en) * | 2016-12-28 | 2017-06-16 | 江苏思源赫兹互感器有限公司 | The preparation method and electronic type voltage transformer of a kind of coaxial capacitive voltage divider |
| CN110501619A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of high frequency response partial pressure measuring apparatus |
| CN111316113A (en) * | 2017-11-20 | 2020-06-19 | 3M创新有限公司 | Voltage divider assembly |
-
2012
- 2012-06-01 CN CN 201220256970 patent/CN202614820U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103235166A (en) * | 2013-04-17 | 2013-08-07 | 清华大学 | Hand-hole type capacitive voltage divider |
| CN106856145A (en) * | 2016-12-28 | 2017-06-16 | 江苏思源赫兹互感器有限公司 | The preparation method and electronic type voltage transformer of a kind of coaxial capacitive voltage divider |
| CN111316113A (en) * | 2017-11-20 | 2020-06-19 | 3M创新有限公司 | Voltage divider assembly |
| CN111316113B (en) * | 2017-11-20 | 2022-12-16 | 3M创新有限公司 | Voltage divider assembly |
| CN110501619A (en) * | 2019-08-30 | 2019-11-26 | 国网山西省电力公司电力科学研究院 | A kind of high frequency response partial pressure measuring apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210915 Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. Address before: 710075 Shaanxi city of Xi'an Province Tang Hing Road No. 7 Patentee before: CHINA XD ELECTRIC Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee after: Xi'an High Voltage Electrical Apparatus Research Institute Co.,Ltd. Address before: 710077 No. 18 West Second Ring Road, Shaanxi, Xi'an Patentee before: XI'AN HIGH VOLTAGE APPARATUS RESEARCH INSTITUTE Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |