CN201662589U - Non-contact high-voltage electric field sensor - Google Patents
Non-contact high-voltage electric field sensor Download PDFInfo
- Publication number
- CN201662589U CN201662589U CN2009202920402U CN200920292040U CN201662589U CN 201662589 U CN201662589 U CN 201662589U CN 2009202920402 U CN2009202920402 U CN 2009202920402U CN 200920292040 U CN200920292040 U CN 200920292040U CN 201662589 U CN201662589 U CN 201662589U
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- electric field
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- high voltage
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Abstract
The utility model relates to a non-contact high-voltage electric field sensor, which comprises an electric field sensing board disposed in a high-voltage electric field to acquire signals, and an electric field shielding cover covered outside the electric field sensing board. The electric field shielding cover shields high-voltage transmission line electric field signals in other phases in an electric grid when acquiring high voltage signals in a tested phase, the electric field shielding cover is provided with an opening, the opening is used for aligning with a high-voltage transmission line in the tested phase in operation, the electric field sensing board is insulated to the electric field shielding cover, and the shielding cover is provided with a grounded line. The non-contact high-voltage electric field sensor is simple in structure and convenient in use due to the fact that testing operation needs no direct contact with high-voltage transmission lines.
Description
Technical field
The utility model relates to a kind of electric-field sensor that is used for measuring voltage, belongs to voltage signal testing field on the high-tension electricity transmission line, is specifically related to a kind of non-contact type high voltage electric-field sensor.
Background technology
Carry high-tension electricity to adopt three-phase alternating current system usually at a distance both at home and abroad, the general and floor level of high voltage transmission line reaches more than two, 30 meters.In the high-potting field, need to gather voltage signal on the high voltage transmission line usually.
Usually the method that adopts in the industry is to be installed in low-side signal on the PT voltage transformer (VT) of transformer station by collection, calculates and converts the high side voltage signal to.Because the electric-power metering and the protective device of transformer station also need to get the PT secondary singal, adopt this mode acquired signal, high-pressure test device is got that the PT secondary singal is short-circuited or during other fault, is had the risk of protection misoperation.
Do not have the PT voltage transformer (VT) in distance transformer station place far away, can't realize in this way when needing to gather high-voltage signal.Adopt a kind of electric field induction plate of open type in the industry, at low-pressure side test voltage signal.When for example zinc oxide lightning arrester block property current is tested, owing to need analyze to the phase place of electric current, must gather each phase high tension voltage reference signal, measure the voltage signal of three phase transmission line if adopt the electric field induction plate of open type, there is the interference of power transmission line signal in the interference of other phase voltage signal and the electrical network and causes test result inaccurate, the reading instability.
The utility model content
The purpose of this utility model is to solve the risk of using the PT voltage transformer (VT) to have electric protection device generation misoperation; adopting open type electric field induction plate to exist power network signal to disturb causes test result inaccurate; the unsettled defective of reading; and provide a kind of simple in structure; the non-contact type high voltage electric-field sensor of being convenient to operate; be used at a distance the electric field that the every phase signals of three-phase high-voltage electric signal produces being converted to voltage signal respectively in the earth side; shield the electric field that other phase voltage signal produces simultaneously, thereby reach the purpose that need not to contact high voltage transmission line and accurately gather high-voltage signal on the high-tension line.
The purpose of this utility model is achieved through the following technical solutions:
A kind of non-contact type high voltage electric-field sensor comprises the electric field induction plate, also comprises covering on the outer electric field shielding cover of electric field induction plate, and electric field shielding is covered with opening, insulate between electric field induction plate and the electric field shielding cover.
Described radome is provided with ground wire, and the signal that the electric field shielding cover is responded to other phase power transmission line when being used for acquired signal is transferred to the earth; Described tablet is a metal material, is the metal material with satisfactory electrical conductivity further, is used for the radome opening of non-contact type high voltage electric-field sensor is aimed at the power transmission line of testing, and tablet induces the high voltage transmission line voltage signal of being tested.
Radome can adopt hollow column, spherical or by they form irregularly shaped, cover on electric field induction plate outside.
The utility model non-contact type high voltage electric-field sensor is simple in structure, easy to use, test operation need not directly to contact high voltage transmission line, only the opening of radome need be aimed at the high voltage transmission line of being tested, get final product the high-voltage signal of the high line transmission line of electricity of remote capture, safety is isolated between the low-pressure side at operating personnel place and the high-tension bus-bar, and test operation is safe and reliable.
Because the electric field induction plate of non-contact type high voltage electric-field sensor places in the radome of band opening, therefore when gathering on the required circuit electric field signal, the electric field shielding cover has shielded electric field signal on the All other routes, has reduced the interference of signal, and it is accurate, convenient and swift that acquired signal is stablized.
Description of drawings
Fig. 1 is the structural representation of the utility model non-contact type high voltage electric-field sensor.
Among the figure: 1----electric field induction plate, 2----radome, 3----ground wire, 4----non-contact type high voltage electric-field sensor output line, 5----insulation support body, the tested phase high voltage transmission line of 6----, other phase high voltage transmission line of 7----, 8-----distributed capacitance.
Embodiment
Describe the utility model embodiment in detail below in conjunction with accompanying drawing:
As shown in Figure 1, it is the structural representation of a specific embodiment of the present utility model, the non-contact type high voltage electric-field sensor comprises electric field induction plate 1, also comprise and cover on the outer electric field shielding cover 2 of electric field induction plate, radome 2 is provided with opening, between electric field induction plate 1 and the electric field shielding cover 2 insulation, in this embodiment between electric field induction plate 1 and the electric field shielding cover 2 by insulation support body 5 support and connection.
Described electric field shielding cover 2 is provided with ground wire 3, and the signal that electric field shielding cover 2 is responded to other phase power transmission line 7 when being used for acquired signal is transferred to the earth, thereby guarantees the accuracy of test.
Hypothesis is gathered high voltage transmission line B phase voltage signal in the present embodiment.Described tablet 1 adopts metal material, be metal material further with satisfactory electrical conductivity, be used for radome 2 openings of non-contact type high voltage electric-field sensor are aimed at institute's test b phase power transmission line 6, electric field induction plate 1 induces B phase high voltage transmission line 6 voltage signals of being tested.
Radome 2 can adopt hollow column, spherical or by they form irregularly shaped, cover on electric field induction plate 1 outside.
When adopting the utility model non-contact type high voltage electric-field sensor test three-phase high-voltage power transmission line high-voltage signal, the utility model non-contact type high voltage electric-field sensor is placed under the tested high voltage transmission line, make the opening of radome 2 aim at a phase high voltage transmission line 6 of being tested, test out voltage signal, shielded the high-voltage signal of A, C phase high voltage transmission line 7 simultaneously.
Its principle is: owing to during the logical high-tension electricity of high voltage transmission line, formed electric field between power transmission line and the earth, the non-contact type high voltage electric-field sensor is positioned under the tested high voltage transmission line, is in the electric field that high voltage transmission line produces.Radome 2 openings are aimed at a phase high voltage transmission line 6 of being tested, form distributed capacitance 8 between tested phase high voltage transmission line 6 and the electric field induction plate 1 in radome 2, be converted into the high-voltage signal of test, draw by non-contact type high voltage electric-field sensor output line 4; Form distributed capacitance 8 between other phase high voltage transmission line 7 and the radome 2, other phase high-voltage signal of induction is transferred to the earth by the ground wire 3 that is provided with on it on the radome 2, has reduced undesired signal, guarantees signal testing result's accuracy.
In the utility model specific embodiment, radome 2 be shaped as the cylindric of hollow, the one end is provided with opening.Certainly, the shape of radome 2 is not limited to shown in the utility model embodiment cylindrical, can also be other shape of hollow cylinder, spheroid or by they form irregularly shaped; The position of radome 2 openings also can be selected to be provided with according to concrete tested object.
Radome 2 is provided with ground wire 3 in the present embodiment, directly the undesired signal that receives on the radome 2 is transferred to the earth, also can connect signal processing circuit and indirectly undesired signal is transferred to the earth.
Be to strengthen the electric field effects of jamming beyond the tested ultra-high-tension power transmission line of shielding, can be in radome 2 nested one or several radome, also the shielding stiffening plate can be set in the inboard of radome 1, these conversion should be within protection domain of the present utility model.
Claims (4)
1. a non-contact type high voltage electric-field sensor comprises the electric field induction plate, it is characterized in that: also comprise covering on the outer electric field shielding cover of electric field induction plate, electric field shielding is covered with opening, insulate between electric field induction plate and the electric field shielding cover.
2. a kind of non-contact type high voltage electric-field sensor according to claim 1, it is characterized in that: described radome is provided with ground wire.
3. a kind of non-contact type high voltage electric-field sensor according to claim 1 is characterized in that: described tablet is a metal material.
4. a kind of non-contact type high voltage electric-field sensor according to claim 1 and 2 is characterized in that: described radome be hollow column, spherical or by they form irregularly shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202920402U CN201662589U (en) | 2009-12-11 | 2009-12-11 | Non-contact high-voltage electric field sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202920402U CN201662589U (en) | 2009-12-11 | 2009-12-11 | Non-contact high-voltage electric field sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201662589U true CN201662589U (en) | 2010-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202920402U Expired - Lifetime CN201662589U (en) | 2009-12-11 | 2009-12-11 | Non-contact high-voltage electric field sensor |
Country Status (1)
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| CN (1) | CN201662589U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830383A (en) * | 2011-06-16 | 2012-12-19 | 中国科学院空间科学与应用研究中心 | Atmospheric electric field calibration system with high precision and wide range |
| CN102830382A (en) * | 2011-06-16 | 2012-12-19 | 中国科学院空间科学与应用研究中心 | Cylindrical capacitance type simulation electric field generator |
| CN103460058A (en) * | 2011-04-14 | 2013-12-18 | 西门子公司 | Method for contactless determination of electrical potential of object using two different values for electric flux, and device |
| CN109752604A (en) * | 2019-01-30 | 2019-05-14 | 中国科学院电子学研究所 | A kind of package assembling of electric-field sensor, packaging method and electric-field sensor |
-
2009
- 2009-12-11 CN CN2009202920402U patent/CN201662589U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103460058A (en) * | 2011-04-14 | 2013-12-18 | 西门子公司 | Method for contactless determination of electrical potential of object using two different values for electric flux, and device |
| CN103460058B (en) * | 2011-04-14 | 2015-11-25 | 西门子公司 | Method and the equipment of the electromotive force of object is contactlessly determined by two different values of electric current |
| CN102830383A (en) * | 2011-06-16 | 2012-12-19 | 中国科学院空间科学与应用研究中心 | Atmospheric electric field calibration system with high precision and wide range |
| CN102830382A (en) * | 2011-06-16 | 2012-12-19 | 中国科学院空间科学与应用研究中心 | Cylindrical capacitance type simulation electric field generator |
| CN102830382B (en) * | 2011-06-16 | 2015-02-04 | 中国科学院空间科学与应用研究中心 | Cylindrical capacitance type simulation electric field generator |
| CN102830383B (en) * | 2011-06-16 | 2015-02-04 | 中国科学院空间科学与应用研究中心 | Atmospheric electric field calibration system with high precision and wide range |
| CN109752604A (en) * | 2019-01-30 | 2019-05-14 | 中国科学院电子学研究所 | A kind of package assembling of electric-field sensor, packaging method and electric-field sensor |
| CN109752604B (en) * | 2019-01-30 | 2021-07-27 | 中国科学院电子学研究所 | Packaging assembly and packaging method of electric field sensor and electric field sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Two - 430074 Hubei Province, Wuhan City Pagoda Hill Road two No. 1 International Business Center -502 Patentee after: Wuhan TEST Technology Co.,Ltd. Address before: Two - 430074 Hubei Province, Wuhan City Pagoda Hill Road two No. 1 International Business Center -502 Patentee before: Wuhan Testyle Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20101201 |
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| CX01 | Expiry of patent term |