CN201758073U - Electronic current-voltage combination transformer - Google Patents
Electronic current-voltage combination transformer Download PDFInfo
- Publication number
- CN201758073U CN201758073U CN2010202890931U CN201020289093U CN201758073U CN 201758073 U CN201758073 U CN 201758073U CN 2010202890931 U CN2010202890931 U CN 2010202890931U CN 201020289093 U CN201020289093 U CN 201020289093U CN 201758073 U CN201758073 U CN 201758073U
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- coil
- voltage
- epoxy
- transformer
- electronic current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/142—Arrangements for simultaneous measurements of several parameters employing techniques covered by groups G01R15/14 - G01R15/26
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- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The utility model relates to an electronic current-voltage combination transformer. A pillar type novel solid epoxy composite package consists of a coil epoxy covering, a high-voltage electrode bar, epoxy cast sheds and a circuit board outlet box, a voltage transformer and a current transformer are jointly compounded into a cavity of the solid epoxy composite package, the high-voltage electrode bar is arranged inside the coil epoxy covering, and the circuit board outlet box is arranged at the bottom of the epoxy cast sheds. The electronic current-voltage combination transformer simultaneously smartly installs and seals the voltage transformer and the current transformer into the same epoxy package, realizes complete combination of the electronic current transformer with the electronic voltage transformer, accordingly has the advantages of small volume, low weight, convenient installation and move, high measuring precision and wide protection range, and thoroughly realizes a medium-low-voltage electronic current-voltage combination transformer completely meeting the requirement of digital remote-transmission signal connection.
Description
Technical field
The utility model relates to a kind of current/voltage combined instrument transformer, especially a kind of novel solid packaging electronic formula electric current, voltage combined instrument transformer.
Background technology
The current/voltage combined instrument transformer is that secondary side is connected on wattmeter, kilowatt-hour meter and the relay protection device between primary side serial connection and the high-voltage fence bus, and the device of bus current, voltage signal is provided for mechanical and electrical protection equipment and electric energy metrical.
Because high-voltage fence voltage is very high, and is also very high to the insulating requirements of voltage transformer; And require also very high (generally to current requirements 0.2S level, 5P25 to certainty of measurement; To 0.2 grade of voltage request; 3P); traditional current/voltage combined instrument transformer based on the electromagnetic type inductive theory; its principle is a transformer principle; its structure is just as the transformer of low capacity; first siding ring is serially connected with between the high-voltage fence bus, and the second siding ring output voltage provides signal for mechanical and electrical protection equipment and electric energy metrical.High-voltage fence voltage is very high, and area of core section that will the changes persuing depressor is enough big and coil turn is very big.Complex structure; Bulky; Weight is big, easily magnetic saturation, and electric pressure is expensive more high more, makes that traditional current/voltage combined instrument transformer is bulky, and weight is big, the cost height, it is very high that insulation property also are difficult to do, and analog quantity output, can not satisfy the requirement of digital transformer substation.
The utility model content
For the above-mentioned technical problem that the current-voltage transformer that solves in the background technology exists, the utility model provides a kind of electronic current voltage combined instrument transformer.
Technical solution of the present utility model is: the combined instrument transformer of a kind of electronic current voltage, comprise coil epoxy integument (1), high pressure contact rod (2), epoxy casting cluster parachute (3), circuit board outlet box (4), voltage sensor (6) and current sensor (7), coil epoxy integument (1), high pressure contact rod (2), epoxy casting cluster parachute (3) and circuit board outlet box (4) constitute the encapsulation of column support type novel solid epoxy composite, voltage sensor (6) and current sensor (7) are compounded in the above-mentioned solids epoxy encapsulation cavity jointly, be provided with high pressure contact rod (2) in the coil epoxy integument (1), epoxy casting cluster parachute (3) bottom is provided with circuit board outlet box (4).
Described voltage sensor (6) by high-field electrode (10), ' F-R ' voltage divider (11) and low-field electrode (12) three parts form, wherein ' end of F-R ' voltage divider (11) links to each other with high-field electrode (10), high-field electrode (10) links to each other with high pressure contact rod (2) by a shielding cap (14) again, and the other end of ' F-R ' voltage divider (11) links to each other with low-field electrode (12).
Described current sensor (7) is made up of metering coil (8), protection coil (9), high-field electrode rod (2) and coil bracket (13) four parts, wherein measures coil (8), protection coil (9) and the coaxial setting of high pressure contact rod (2); Coil bracket (13) one ends are fixed on epoxy casting cluster parachute (3) bottom, and the other end is in metering coil (8) and protection coil (9) bottom as carriage.
Described metering coil (8) adopts small-sized nanocrystalline magnet core coil, and protection coil (9) adopts sieve gaussian basis coil.
The utility model is installed embedding in same epoxy packages simultaneously dexterously with voltage sensor and current sensor, realize the complete combination of electronic current mutual inductor and electronic type voltage transformer, therefore it is little, in light weight to the utlity model has volume, the characteristics that conveniently moving is installed; The utility model has been saved a large amount of copper enamelled wire and silicon steel sheet owing to do not have ferromagnetic core and conventional coil simultaneously, greatly reduces cost; Current sensor partly adopts small-sized nanocrystalline magnet core coil to be called for short the metering coil of LPCT as current sensor, and sieve gaussian basis coil is called for short the protection coil of ROG as current sensor, and its output signal is respectively as metering and guard signal; Voltage sensor adopts high-precision ' F-R ' voltage divider, so the high and wide in range characteristics of protection range of certainty of measurement are arranged.The utility model is by the collection respectively to the voltage and current signal, the data that collect are distinguished data processing again, last electric light conversion, the coaxial cable or the optical cable of drawing by the via hole from the side cover plate of circuit board outlet box will carry out teletransmission with the digital signal that the form of light data is exported, and just realize a kind of mesolow electronic mutual inductor that meets digitlization remote transfer signal connection request fully fully.
Description of drawings
Fig. 1 is the structural representation of the utility model specific embodiment.
Fig. 2 is the cutaway view of Fig. 1.
Embodiment
The utility model is a kind of electronic current voltage combined instrument transformer, from contour structures, can be divided into coil epoxy integument 1, high pressure contact rod 2, epoxy casting cluster parachute 3 and circuit board outlet box 4 four parts, more than four parts formed column support type novel solid epoxy composite encapsulating structure of the present utility model jointly.Voltage sensor 6 and current sensor 7 are compounded in the above-mentioned solids epoxy encapsulation cavity jointly, are provided with high pressure contact rod 2 in the coil epoxy integument 1, and epoxy casting cluster parachute 3 bottoms are provided with circuit board outlet box 4.
Above-mentioned current sensor part 7 is made up of metering coil 8, protection coil 9, high pressure contact rod 2 and coil bracket 13 4 parts, wherein measures coil 8, protection coil 9 and the 2 coaxial settings of high pressure contact rod; Coil bracket 13 1 ends are fixed on epoxy casting cluster parachute 3 bottoms, and the other end is in metering coil 8 and protection coil 9 bottoms as carriage, and metering coil and protective wire are enclosed support, fixation.Metering coil 8 adopts the metering signal of nanocrystalline magnet core coil as the current transformer part, the nanocrystalline magnet core coil is called for short LPCT very high certainty of measurement, the metering signal of making current sensor of it can guarantee that galvanometer measurer of the present utility model has very high certainty of measurement, has the high accuracy characteristic to realize the utility model current segment; Protection coil 9 adopts sieve gaussian basis coil to be called for short the guard signal of ROG as the current sensor part, the characteristics that sieve gaussian basis coil has no magnetic hysteresis, magnetically saturated characteristics, have a big linearity measuring range scope are applicable to protection on a large scale, do the current protection of the present utility model that the guard signal of current transformer can guarantee with it and have very wide protection range, have the characteristic of wide region protection to realize current segment of the present utility model; Electronic current mutual inductor of the present utility model partly adopts the compound transducer of " LPCT+ROG-CT ", makes both mutual supplement with each other's advantages, and the high accuracy between existing specified measurement zone has protection to measure on a large scale again.Described ' CT ' is the abbreviation of current sensor.
Above-mentioned voltage sensor part 6 by high-field electrode 10, ' F-R ' voltage divider 11 and low-field electrode 12 3 parts form.Wherein ' end of F-R ' voltage divider 11 links to each other with high-field electrode 10, high-field electrode 10 links to each other with high pressure contact rod 2 by a shielding cap 14 again, ' other end of F-R ' voltage divider 11 links to each other with low-field electrode 12, described ' F-R ' voltage divider 11 is a kind of resistance balance-type voltage dividers, is called equipotentiality chamber voltage divider again.' F-R ' voltage divider 11 measure adopted original in style high accuracy ' F-R ' dividing potential drop technology.' F-R ' voltage divider 11 is a kind of high-accuracy voltage transducers, because ' the interior special tectonic of F-R ' voltage divider 11 ' body ', make the field one tunnel in the cavity keep balance, thereby thoroughly eliminate outer the putting and interior sudden strain of a muscle of local high potential generation that non-even electric field causes, guarantee that voltage sensor is operation under ' electromagnetism is mourned in silence ' environment, make ' F-R ' voltage divider 11 industrial frequency withstand voltages, office are put, temperature stability, thereby the stability, accuracy, long-distance transmissions antijamming capability that have guaranteed the certainty of measurement of voltage signal strong, exempt from maintenance, stable and reliable operation advantage.Also can hand over simultaneously, directly dual-purpose, old-fashioned (electric capacity, inductance divide die mould) incomparable technical advantage is arranged.
Claims (4)
1. combined instrument transformer of electronic current voltage, comprise coil epoxy integument (1), high pressure contact rod (2), epoxy casting cluster parachute (3), circuit board outlet box (4), voltage sensor (6) and current sensor (7), it is characterized in that: coil epoxy integument (1), high pressure contact rod (2), epoxy casting cluster parachute (3) and circuit board outlet box (4) constitute the encapsulation of column support type novel solid epoxy composite, voltage sensor (6) and current sensor (7) are compounded in the above-mentioned solids epoxy encapsulation cavity jointly, be provided with high pressure contact rod (2) in the coil epoxy integument (1), epoxy casting cluster parachute (3) bottom is provided with circuit board outlet box (4).
2. the combined instrument transformer of electronic current voltage according to claim 1, it is characterized in that: described voltage sensor (6) by high-field electrode (10), ' F-R ' voltage divider (11) and low-field electrode (12) three parts form, wherein ' end of F-R ' voltage divider (11) links to each other with high-field electrode (10), high-field electrode (10) links to each other with high pressure contact rod (2) by a shielding cap (14) again, and the other end of ' F-R ' voltage divider (11) links to each other with low-field electrode (12).
3. the combined instrument transformer of electronic current voltage according to claim 1, it is characterized in that: described current sensor (7) is made up of metering coil (8), protection coil (9), high pressure contact rod (2) and coil bracket (13) four parts, wherein measures coil (8), protection coil (9) and the coaxial setting of high pressure contact rod (2); Coil bracket (13) one ends are fixed on epoxy casting cluster parachute (3) bottom, and the other end is in metering coil (8) and protection coil (9) bottom as carriage.
4. the combined instrument transformer of electronic current voltage as claimed in claim 3 is characterized in that: described metering coil (8) adopts small-sized nanocrystalline magnet core coil, and protection coil (9) adopts sieve gaussian basis coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202890931U CN201758073U (en) | 2010-08-10 | 2010-08-10 | Electronic current-voltage combination transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202890931U CN201758073U (en) | 2010-08-10 | 2010-08-10 | Electronic current-voltage combination transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201758073U true CN201758073U (en) | 2011-03-09 |
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ID=43645363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202890931U Expired - Lifetime CN201758073U (en) | 2010-08-10 | 2010-08-10 | Electronic current-voltage combination transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201758073U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN103558440A (en) * | 2013-10-22 | 2014-02-05 | 江苏靖江互感器厂有限公司 | Intelligent electronic type voltage transformer |
| CN105024371A (en) * | 2015-07-22 | 2015-11-04 | 江苏靖江互感器厂有限公司 | Four-in-one intelligent sampling discharging device |
| CN105593690A (en) * | 2013-09-30 | 2016-05-18 | 莱姆知识产权股份有限公司 | Clip-on current transducer or current transformer |
| CN110600229A (en) * | 2019-09-12 | 2019-12-20 | 湖北大二互科技股份有限公司 | Micropower combined mutual inductor |
-
2010
- 2010-08-10 CN CN2010202890931U patent/CN201758073U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103018529A (en) * | 2012-12-11 | 2013-04-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN103018529B (en) * | 2012-12-11 | 2015-06-03 | 扬州新概念电气有限公司 | Combined type current voltage sensor |
| CN105593690A (en) * | 2013-09-30 | 2016-05-18 | 莱姆知识产权股份有限公司 | Clip-on current transducer or current transformer |
| CN105593690B (en) * | 2013-09-30 | 2019-03-29 | 莱姆电子(中国)有限公司 | Clip power pack or current transformer |
| CN103558440A (en) * | 2013-10-22 | 2014-02-05 | 江苏靖江互感器厂有限公司 | Intelligent electronic type voltage transformer |
| CN103558440B (en) * | 2013-10-22 | 2016-03-02 | 江苏靖江互感器厂有限公司 | A kind of intelligent electronic type voltage transformer |
| CN105024371A (en) * | 2015-07-22 | 2015-11-04 | 江苏靖江互感器厂有限公司 | Four-in-one intelligent sampling discharging device |
| CN110600229A (en) * | 2019-09-12 | 2019-12-20 | 湖北大二互科技股份有限公司 | Micropower combined mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110309 |
|
| CX01 | Expiry of patent term |