CN2540637Y - Electronic current voltage combined sensor - Google Patents
Electronic current voltage combined sensor Download PDFInfo
- Publication number
- CN2540637Y CN2540637Y CN 02211226 CN02211226U CN2540637Y CN 2540637 Y CN2540637 Y CN 2540637Y CN 02211226 CN02211226 CN 02211226 CN 02211226 U CN02211226 U CN 02211226U CN 2540637 Y CN2540637 Y CN 2540637Y
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- China
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- connection terminal
- electronic current
- current voltage
- combination sensor
- sensor according
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Abstract
The utility model relates to an electronic current voltage combination sensor, which is characterized in that a resistance divider is arranged in a casting, the two ends of the resistance divider are respectively connected with an first wiring terminal and a bottom plate which are arranged on the casing, the output end of the resistance divider is connected with a terminal of a secondary wiring terminal, a first conducting rod which has a certain geometry and a secondary coil which is wound on a ring insulated framework are also arranged in the casing, the first conducting rod crosses the centre of the ring insulated framework which is wound with the secondary coil, the two ends of the first conducting rod are connected with the first wiring terminal, and the two ends are connected with the secondary wiring terminal through a shielded cable. The utility model integrates the current sensing and the voltage sensing together, the measuring range is wide, the precision is high, the input linearity and the output linearity are excellent, the magnetic saturation and the ferroresonance phenomenons do not exist, and the operation is safe and reliable.
Description
Technical field the utility model relates to a kind of electrical equipment, especially for the electronic current voltage sensor of electric current, voltage measurement and enforcement relay protection.
Background technology is in electric system; electromagnetic type electric current, voltage transformer (VT) are mostly adopted in the measurement of electric current, voltage and enforcement relay protection; the problem that this mutual inductor exists is that volume is big, Heavy Weight; have ferromagnet; frequency band is very narrow, secondary singal wave form distortion during magnetic saturation, and measuring error is big; and cause the misoperation of protective relaying device, when serious also potential safety hazard can take place.At present, continuous development along with electric system, the continuous increase of power capacity and electronic system develop to networking, robotization and digitizing direction, and the required input signal of secondary device significantly reduces, and therefore this traditional electromagnetic type electric current, voltage transformer (VT) are difficult to satisfy technical requirement.
The summary of the invention the purpose of this utility model is to provide the electronic current voltage that a kind of volume is little, measurement range is wide, precision is high, linear feature is good, multiple functional combination sensor.
The purpose of this utility model is achieved in that a kind of electronic current voltage combination sensor, it is characterized in that in pour mass, being provided with resitstance voltage divider, resitstance voltage divider is fixed on the resistance support member, its two ends respectively be located at pour mass on primary connection terminal and base plate be connected, the output terminal of resitstance voltage divider is connected with the secondary connection terminal, and the outside of resitstance voltage divider is provided with radome; Also be provided with primary conductive bar with certain geometrical shape and the secondary coil that is wound on the annular insulation framework in the pour mass, the primary conductive bar passes through the annular insulation framework center that is wound with secondary coil, its two ends are connected with the primary connection terminal, the secondary coil outside is provided with radome, and its two ends are connected with the secondary connection terminal through shielded cable.
Described resitstance voltage divider is wound on the resistance support member from top to bottom, and the one end is connected with the primary connection terminal that is embedded in the pour mass upper end, and the other end is connected with base plate.
Described primary conductive bar is the L shaped or similar geometric configuration of U-shaped.
Described radome netting twine outside shielded cable is connected with the installation base plate.
Described sensor pour mass is rectangular parallelepiped or cylinder, and its bottom is provided with the installation base plate, and the top pouring body is embedded with the primary connection terminal, and side-lower has the secondary connection terminal, and there is radome the outside of secondary connection terminal.
The end of the external shield cable that links to each other with the secondary connection terminal has the connector that can be connected with the electric equipment convenience.
The output terminal of resitstance voltage divider and secondary coil are connected with the secondary terminal with shielded cable.
The end of described radome netting twine outside shielded cable is connected with the installation base plate.
Be connected with the external shield cable on the secondary connection terminal of electric current, voltage, the other end of external shield cable has the connector that can conveniently connect.
The electronic current voltage combination sensor that the utility model provides, its voltage segment is based on the electric resistance partial pressure principle and manufactures and form, by the precision resister voltage divider, with the low-voltage of high-voltage variable for satisfying the various functional requirements of digital two sub-cells and being directly proportional of power transmission network with it.Current segment is based on Rogowski Rogowski coil principle and manufactures and form, electric current flows through the primary conductive bar, around it, produce magnetic flux, this magnetic flux passes secondary coil and produces induction electromotive force, export a voltage that is directly proportional with current changing rate, this voltage signal just can reflect the measured current value again after digital circuit is handled.Because electronic current voltage combination sensor does not have iron core, iron-free magnetic saturation and resonance phenomena in whole measurement range, input and output linearity degree is good, therefore uses with digital secondary unit matching, can improve measuring accuracy and reliability widely.Resitstance voltage divider of the present utility model adopts noninductive winding to be wound on from top to bottom by organic insulation and makes on the resistance support member with definite shape, also can adopt alternate manner to be fixed on the resistance support member, the top and bottom of resitstance voltage divider are connected with the installation base plate with the connection terminal that is embedded in the pour mass end respectively, outside at resitstance voltage divider is provided with metallic shield, the end of cover is connected with the installation base plate by the outer netting twine of shielded cable, form good electromagnetic shielding action, improve its antijamming capability.The outside of cover is provided with the buffer insulation layer.Primary conductive bar of the present utility model can be made U-shaped, L shaped or similar geometric configuration, and the purpose that adopts this structure is in order to increase creepage distance, need not to increase the volume of pour mass again.The insulation framework of secondary coil adopts high performance insulating material to manufacture, and requires its machining precision height, Heat stability is good.The secondary connection terminal outer of electric current, voltage has metallic shield, connect an external shield cable on the secondary connection terminal respectively, shielded cable will have certain-length, the end of line has dissimilar alternative output connectors, so both can be connected with digital two sub-cells easily, guarantee the electromagnetic compatibility of sensor and other electric equipment again, further improved the measuring accuracy of sensor.
The utility model be colleeting comb, voltage sensor in one, and have following characteristics and be:
1 measurement range is wide, the precision height, the input, output the linearity good;
2 no magnetic saturation and ferroresonance phenomenon, it is safe and reliable to operation;
3 is multiple functional, easy to use, has multiple functions such as measurement, protection and monitoring simultaneously;
4 volumes are little, and are in light weight, ratio of performance to price height;
5 noise-less pollutions, anti-interference, have superior environmental protection characteristic;
6 frequency responses are wide, and dynamic range is big;
7, can satisfy the measurement of electric system and protection to the needs of digitizing, intellectuality, web development.
Description of drawings Fig. 1 is a structural representation of the present utility model.
Embodiment is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the outer shape of the electronic current voltage combination sensor that is made of voltage sensor and current sense two parts is a rectangular parallelepiped, its high-precision resitstance voltage divider 1 is wound on the column resistance support member 2 that is formed by the cast of machine insulating material, the resistance support member is positioned at pour mass one side, the two ends up and down of resitstance voltage divider are connected with base plate 5 with the primary connection terminal 4 that is embedded in pour mass 3 two ends respectively, be provided with metallic shield 6 in the outside of resitstance voltage divider, isolate by the organic insulation of cast between the two.The outside of cover is wound with insulating material, constitutes buffer insulation layer 7.The openend of cover netting twine 8 outside shielded cable is connected with the installation base plate, improves its antijamming capability.The installation base plate is fixed on the bottom of pour mass, and the output terminal of resitstance voltage divider is connected with the secondary connection terminal 10 that is positioned at the pour mass side-lower by shielded cable 9.The opposite side of pour mass is provided with the annular insulation framework 12 and the primary conductive bar 13 of secondary coil 11, the primary conductive bar is a U-shaped, the outside is wound with buffer insulation layer 14, and this conducting rod passes through annular insulation framework center, and its two ends are connected with the primary connection terminal 4 that is embedded in the pour mass top.Annular also is wound with on the insulation framework secondary coil is coated on buffer insulation layer 15 on the skeleton, and the outside of buffer insulation layer is provided with metallic shield 16, and this radome netting twine 17 installation base plate 5 bottom being installed in pour mass through shielded cable outside is connected.Secondary coil is connected with the secondary connection terminal through shielded cable 18, the secondary connection terminal is arranged on the installation base plate of pour mass side-lower, its outside covers with metallic shield 19, be connected with the external shield cable of long 4-6 rice on the secondary connection terminal, the termination of line has dissimilar alternative connectors, and is not shown.So that it is connected with equipment easily.Because the live part of this sensor is equipped with shielding protection, guaranteed the electromagnetic compatibility with miscellaneous equipment, further improved the measuring accuracy of sensor.
Claims (9)
1, a kind of electronic current voltage combination sensor, it is characterized in that in pour mass, being provided with resitstance voltage divider, resitstance voltage divider is fixed on the resistance support member, its two ends respectively be located at pour mass on primary connection terminal and base plate be connected, the output terminal of resitstance voltage divider is connected with the secondary connection terminal, and the outside of resitstance voltage divider is provided with radome; Also be provided with primary conductive bar with certain geometrical shape and the secondary coil that is wound on the annular insulation framework in the pour mass, the primary conductive bar passes through the annular insulation framework center that is wound with secondary coil, its two ends are connected with the primary connection terminal, the secondary coil outside is provided with radome, and its two ends are connected with the secondary connection terminal through shielded cable.
2, electronic current voltage combination sensor according to claim 1, it is characterized in that described resitstance voltage divider is wound on the resistance support member from top to bottom, the one end is connected with the primary connection terminal that is embedded in the pour mass upper end, and the other end is connected with base plate.
3, electronic current voltage combination sensor according to claim 1 is characterized in that described primary conductive bar is the L shaped or similar geometric configuration of U-shaped.
4, electronic current voltage combination sensor according to claim 1 is characterized in that described radome netting twine outside shielded cable is connected with the installation base plate.
5, electronic current voltage combination sensor according to claim 1, it is characterized in that described sensor pour mass is rectangular parallelepiped or cylinder, its bottom is provided with the installation base plate, the top pouring body is embedded with the primary connection terminal, side-lower has the secondary connection terminal, and there is radome the outside of secondary connection terminal.
6, electronic current voltage combination sensor according to claim 1, the end that it is characterized in that the external shield cable that links to each other with the secondary connection terminal have can with the convenient connector that be connected of electric equipment.
7, electronic current voltage combination sensor according to claim 1 is characterized in that the output terminal of resitstance voltage divider and secondary coil are connected with the secondary terminal with shielded cable.
8, electronic current voltage combination sensor according to claim 1 is characterized in that end netting twine outside shielded cable of described radome is connected with the installation base plate.
9, electronic current voltage combination sensor according to claim 1 is characterized in that being connected with the external shield cable on the secondary connection terminal of electric current, voltage, and the other end of external shield cable has the connector that can conveniently connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211226 CN2540637Y (en) | 2002-04-12 | 2002-04-12 | Electronic current voltage combined sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02211226 CN2540637Y (en) | 2002-04-12 | 2002-04-12 | Electronic current voltage combined sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2540637Y true CN2540637Y (en) | 2003-03-19 |
Family
ID=33691187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02211226 Expired - Fee Related CN2540637Y (en) | 2002-04-12 | 2002-04-12 | Electronic current voltage combined sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2540637Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580460C (en) * | 2004-11-03 | 2010-01-13 | 利奥波德·科世达责任有限股份公司 | Accumulator current sensor for automobile |
| CN105588976A (en) * | 2015-12-23 | 2016-05-18 | 国网重庆市电力公司电力科学研究院 | Voltage and current combined sensor and voltage and current detection system |
| CN109030909A (en) * | 2018-07-13 | 2018-12-18 | 北京和信瑞通电力技术股份有限公司 | A kind of distribution one or two times fusions three-phase resistance reactance divided voltage sensor |
| CN109683004A (en) * | 2019-01-11 | 2019-04-26 | 信阳豫电互感器有限公司 | A kind of combined electrical minor sensor |
-
2002
- 2002-04-12 CN CN 02211226 patent/CN2540637Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100580460C (en) * | 2004-11-03 | 2010-01-13 | 利奥波德·科世达责任有限股份公司 | Accumulator current sensor for automobile |
| CN105588976A (en) * | 2015-12-23 | 2016-05-18 | 国网重庆市电力公司电力科学研究院 | Voltage and current combined sensor and voltage and current detection system |
| CN105588976B (en) * | 2015-12-23 | 2018-07-03 | 国网重庆市电力公司电力科学研究院 | Voltage and current combined sensor and measure voltage ＆ current system |
| CN109030909A (en) * | 2018-07-13 | 2018-12-18 | 北京和信瑞通电力技术股份有限公司 | A kind of distribution one or two times fusions three-phase resistance reactance divided voltage sensor |
| CN109683004A (en) * | 2019-01-11 | 2019-04-26 | 信阳豫电互感器有限公司 | A kind of combined electrical minor sensor |
| CN109683004B (en) * | 2019-01-11 | 2024-02-23 | 信阳豫电互感器有限公司 | Combined electronic sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030319 Termination date: 20100412 |