CN206038740U - GIS uses and all -fiber current transformer thereof - Google Patents
GIS uses and all -fiber current transformer thereof Download PDFInfo
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- CN206038740U CN206038740U CN201621014010.1U CN201621014010U CN206038740U CN 206038740 U CN206038740 U CN 206038740U CN 201621014010 U CN201621014010 U CN 201621014010U CN 206038740 U CN206038740 U CN 206038740U
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Abstract
The utility model provides an all -fiber current transformer for the GIS, including sensing unit, data processing unit to and merging cells, merging cells is connected with electrical measurement instrument and relay protection equipment, the sensing unit includes both ends open -ended shell, and this housing opening's tip do not is provided with installs a section of thick bamboo and crimping flange, the response part is further installed to insulating the connection between an installation section of thick bamboo and the crimping flange in this shell, should respond to the part and wear out sensing unit and data processing unit connection. The utility model discloses GIS has with external all -fiber current transformer structure that insulation system is simple, small, characteristics such as convenient, that barrier propterty is good are maintained in the installation, avoided that electromagnetic type and electronic transformer are bulky, installation difficulty, difficult maintenance, interference immunity subalternation less than.
Description
【Technical field】
The utility model is related to a kind of Cubicle Gas-Insulated Switchgear (GIS) and uses all-fiber current transformator, its
Electric energy metrical, relay protection and electric quantity monitoring suitable for three-phase separate box GIS.
【Background technology】
The effect that current transformer carries the metering of electric current in power system and protected to system.As GIS's
Important component part, traditional electromagnetic current transducer is as which is bulky, cost is high, dynamic range is little, be also easy to produce iron
The unfavorable factors such as magnetic resonance, insulation system complexity, analog output, can not meet intelligent grid to transformer low cost, body
The little, digital output of product, safe and reliable requirement.
The utility model provides a kind of GIS all-fiber current transformators based on Faraday magneto-optic effect principles.Its
When transmitting in the optical fiber according to polarised light, the anglec of rotation can change principle according to magnetic field power, by measuring the anglec of rotation
(Faraday angles of rotation), realizes the measurement to electric current.Relative to traditional electromagnetic current transducer, the full optical-fiber current is mutual
Sensor has big, safe and reliable small volume, measurement range, low energy consumption, degree of accuracy height, the advantage of digital output, meets intelligence
Requirement of the electrical network to new transformer.
【The content of the invention】
The purpose of this utility model is to provide a kind of GIS all-fiber current transformators, efficiently solves traditional mutual inductance
The deficiency of device, meets requirement of the intelligent grid to new transformer, while solve all-fiber current transformator pacifying on GIS
The problems such as dress, insulation, sealing, protection, circulation are blocked.
For achieving the above object, the utility model is employed the following technical solutions：
A kind of GIS all-fiber current transformators, including sensing unit, data processing unit and combining unit, it is described
Combining unit is connected with electric testing instrument and relay protection device, and the sensing unit includes the shell of both ends open, and this is outer
The end of shell opener is respectively arranged with mounting cylinder and crimping flange, insulation connection between the mounting cylinder and crimping flange, and this is outer
The parts such as optical fiber sensing ring are further fitted with shell, the polarization maintaining optical fibre of the optical fiber sensing ring passes sensing unit and data processing
Unit connects.
Further, described mounting cylinder is the flanged (FLGD) tubular structure in two ends, including big end flanges and little end flanges are described
Big end flanges are provided with the end of shell aperture, and little end flanges are arranged on enclosure and are arranged with conductor coaxial to be measured,
Dead ring is connected with the little end flanges, to the induced-current for blocking measured position shell.
Further, two group of the dead ring, pairing are connected to small end end face of flange.
Further, the back side of the little end flanges is further fitted with semi-ring crimping flange, and the dead ring passes through semi-ring
Crimping flange, crimping flange and screw are fastened.
Further, internal diameter of the small end flange outer diameter of the mounting cylinder less than optical fiber sensing ring, the external diameter of big end flanges are big
In the external diameter of optical fiber sensing ring.
Further, the semi-ring crimping flange is split to form by circular ring type flange, is left between two semi-ring crimping flanges
Gap, during use, two semi-ring crimping flanges are connected to the little end flanges back side of mounting cylinder, are connected with crimping flange by screw
Fastening.
Further, the optical fiber sensing ring be loop configuration, when optical fiber sensing ring for it is multiple when, it is adjacent between install insulation additional
Packing ring, prevents from colliding between sensing element, blocks electric current.
Further, the shell is rolled by corrosion resistant plate and is formed, and interface has the side of mutual overlap joint and bar hole, radially has
Stroke, for adjusting shell radial direction with big end flanges or crimping the error of flange end.
Further, the edge position of mutual overlap joint be pasted with bar shaped sealing strip, on the inside of mounting cylinder with big end flanges or pressure
Acting flange contact position adhesive seal ring, for waterproof and dustproof and sealing.
Further, the big end flanges and shell in shell and mounting cylinder be provided with fastening outside the overlap joint of flange with crimping
Snap ring, to fasten shell.
Further, the fastening snap ring is banding cirque structure, and at opening, two ends are fixed with the company for being easy to mode connects for screw
Connect block, during use, fastener latch closure is in shell and big end flanges and crimps flange coincidence part position, with screw fastening after, play tight
Gu the effect of shell.
Further, sensing unit is provided with earthing bar, is crimped on the big end flanges of mounting cylinder by screw and crimps flange
Outside.
Further, installing hole is provided with the optical fiber sensing ring, by the installing hole mounting screw, so as to be fixed on
On the big end flanges side of mounting cylinder.
Further, electrically connected by polarization maintaining optical fibre between the optical fiber sensing ring and data processing unit.
A kind of mounting means of all-fiber current transformator in GIS, sensing unit installed in GIS transition bus cylinder and
Between breaker, GIS device is made to form sealed air chamber；The sensing unit and data processing unit are every phase configuration one, are closed
And unit is three phase arrangement one.
Further, the data processing unit is arranged on sensing unit nearby or is arranged in Intelligent control cabinet.
Further, when data processing unit is placed in Intelligent control cabinet, data processing unit and sensing unit are connected
Polarization maintaining optical fibre need to block, install it is in place after welding carry out accuracy test again；The combining unit is arranged on intelligence control
In cabinet processed, it is connected using optical fiber between data processing unit.
Compared with prior art, the utility model simple structure, small volume, measurement range be big, convenient for installation and maintenance, energy consumption
The low, degree of accuracy is high, and with digital output.
【Description of the drawings】
Fig. 1 shows sensing unit structures figure in the utility model.
A-A sectional views of the Fig. 2 for Fig. 1.
Fig. 3 shows mounting structure figure of the utility model in GIS.
1st, conductor；2nd, mounting cylinder；3rd, optical fiber sensing ring；4th, felt pad；5th, shell；6th, fasten snap ring；7th, semi-ring crimping
It is blue；8th, dead ring；9th, crimp flange；10th, polarization maintaining optical fibre；11st, trip bolt；12nd, sealing strip；13rd, grounding copper bar；14th, data
Processing unit；15th, transition bus cylinder；16th, sensing unit；17th, breaker；18th, Intelligent control cabinet；19th, combining unit.
【Specific embodiment】
The utility model provides a kind of GIS all-fiber current transformators, and it is mainly by sensing unit, data processing list
Unit and three part of combining unit composition, realize reliability application of the all-fiber current transformator in GIS, efficiently solve complete
The problems such as installation of the optical fiber current mutual inductor on GIS, insulation, sealing, protection, circulation are blocked.
The sensing unit adopts Faraday magnetooptical effect principle, for sensing the electric current of measured conductor.At the data
Reason unit mainly completes input to sensing unit optical signal, the parsing of output optical signal, digitized processing, temperature-compensating etc.,
And the synchronous serial mode according to regulation is exported.The complete paired data processing unit information of the combining unit it is synchronous, cut
Change or and row logic, and be transferred to electric testing instrument and relay protection sets.
Below in conjunction with the accompanying drawings and instantiation is described in further detail to the utility model.
Fig. 1 show 16 structure chart of sensing unit in the utility model, and the sensing unit includes the shell of both ends open
5, the end of the opening of shell 5 is respectively arranged with mounting cylinder 2 and crimping flange 9, is further fitted with induction part in the shell 5
Part, the sensing part are passed sensing unit and are connected with data processing unit.
The mounting cylinder 2 is the flanged (FLGD) tubular structure in two ends, is divided into big end flanges and little end flanges, the big end flanges
Installed in the end of the opening of shell 5, little end flanges are arranged on inside shell 5 and are coaxially disposed with current-carrying conductor 1 is held.This
Outward, internal diameter 3～5mm of the external diameter of little end flanges less than optical fiber sensing ring 3, the external diameter of big end flanges is more than optical fiber sensing ring 3
10～15mm of external diameter, optical fiber sensing ring are fixed by screws in the big end flanges side of mounting cylinder.
Optical fiber sensing ring 3 is ring type structure, the internal diameter of ring, external diameter according to actual installation structures shape, in ring body circumferentially
Direction is evenly arranged one group of installing hole；It is fixed on the side of 2 big end flanges of mounting cylinder by one group of screw, sensing unit 3 one
As in the case of be two, collide with to prevent from appearing alternatively between two, blocking ring body case electric current, two optical fiber sensing rings 3 it
Between install felt pad 4 additional.
Dead ring 8 is made up of insulating materials, two one group, and pairing is connected in 2 little end flanges of mounting cylinder, for blocking peace
Induced-current on fitted tube 2 passes through, and two semi-ring crimping flanges 7 are fastenedly connected with flange 9 is crimped by one group of screw.
Shell 5 is rolled into columnar structured by thin plate, is rolled by the thin corrosion resistant plate of rectangle and is formed, and interface has phase lap
The side for connecing and bar hole, the stroke for radially having 5～20mm, for adjusting error of the guard shield radially with flange end.Together
When, sealing strip 12 is pasted with the edge position of mutual overlap joint, fastened by one group of screw.The upper and lower ends difference of 5 cylinder of shell
The end face of the big end flanges and crimping flange 9 of mounting cylinder 2 is overlapped on, while in shell 5 and two end face of flange lap-joints, circumference
Side bonds sealing strip is used to seal.
Fastening snap ring 6 is 2 sets, is stuck in guard shield 5 with mounting cylinder 2 and crimps outside the overlap joint of flange 9, indentation, there
Clamping is carried out with trip bolt 11, plays a part of to fasten guard shield 5.Specifically, fasten snap ring 6 to tie for banding annular
Structure, at opening, two ends are welded with the metal derby for being easy to mode connects for screw, the distance about 40～70mm of opening, fastener during use
Latch closure is in shell and big end flanges and crimps flange coincidence part position, with screw fastening after, play a part of to fasten guard shield.
Semi-ring crimping flange 7 is split to form by circular ring type metal flange, is left between L between two semi-ring crimping flanges
Gap, L are usually 5～10mm.During use, two semi-ring clamping flanges are connected to the little end flanges back side of mounting cylinder, by screw with
Crimping flange connection fastening.
In addition, the periphery of the sensing unit is provided with grounding copper bar 13, described grounding copper bar 13 is " U " type structure,
The outside of 2 big end flanges of mounting cylinder and crimping flange 9 is crimped on by screw, generally three groups is arranged, for connection because " Z " type is exhausted
Edge ring and the faradic flow channel of GIS shells that blocks.
The polarization maintaining optical fibre 10 being connected with optical fiber sensing ring 3 is drawn by " U " type groove of 5 side wall of guard shield, with data processing
Unit 14 connects and both can not disconnect, and the installation site of data processing unit 14 is determined according to requirement of engineering.Conductor 1 is installed
In the axial centre of current transformer, for carrying switchgear primary current.Three groups of grounding copper bars 13 are uniform installed in peace
The lateral surface of 2 big end flanges of fitted tube and crimping flange 9, for connecting the GIS shell induced-currents blocked because of " Z " type dead ring
Flow channel.
Embodiments described above is the sensing unit of single-phase all-fiber current transformator, and three-phase separate box GIS is used
When, using three groups of said structures.
Fig. 3 show scheme of installation of the all-fiber current transformator in GIS in the utility model, and sensing unit 16 is pacified
It is mounted between transition bus cylinder 15 and breaker 17, makes GIS device form sealed air chamber, data processing unit 6 is according to engineering need
Will, may be mounted near sensing unit 16, it is also possible to be placed in Intelligent control cabinet 18, if placed at Intelligent control cabinet 18
When middle, polarization maintaining optical fibre 10 needs to block, welding carries out accuracy test again.10 two ends of polarization maintaining optical fibre connect sensing unit respectively
Optical fiber sensing ring 3 and data processing unit 14.It is arranged in Intelligent control cabinet 18, with data processing unit with combining unit 19
Between using ordinary optic fibre connect.
When the utility model is used in GIS, sensing unit and data processing unit are every phase configuration one, combining unit
For three phase arrangement 1.
Above content is the detailed description made to the utility model with reference to specific preferred embodiment, it is impossible to assert this practicality
New embodiment is only limitted to this, for the utility model person of an ordinary skill in the technical field, all according to this
Any simple modification and equivalent structure transformation or modification that utility model Spirit Essence is made, belong to the utility model and are submitted to
Claims determine scope of patent protection.
Claims (10)
1. a kind of all-fiber current transformator, it is characterised in that：Including sensing unit, data processing unit, and combining unit,
The combining unit is connected with electric testing instrument and relay protection device, and the sensing unit includes the shell of both ends open
(5) end that, the shell (5) is open is respectively arranged with mounting cylinder (2) and crimping flange (9), the mounting cylinder (2) and crimping
Optical fiber sensing ring (3) is further fitted with insulation connection, the shell (5) between blue (9), the guarantor of the optical fiber sensing ring (3) is inclined
Optical fiber is passed sensing unit (16) and is connected with data processing unit (14)；The mounting cylinder (2) is including big end flanges and little hold-carrying
Orchid, the big end flanges are arranged on the end that is open of shell (5), little end flanges be arranged on enclosure and with conductor to be measured
Be coaxially disposed, dead ring be connected with the little end flanges, to the induced-current for blocking measured position shell.
2. a kind of all-fiber current transformator according to claim 1, it is characterised in that：The dead ring (8) two one
Group, pairing are connected to small end end face of flange.
3. a kind of all-fiber current transformator according to claim 1, it is characterised in that：The back side of the little end flanges is entered
One step is provided with semi-ring crimping flange (7), and the dead ring crimps flange, crimping flange and screw by semi-ring and fastened；
Semi-ring crimping flange (7) is split to form by circular ring type flange, leaves gap, use between two semi-rings crimping flange (7)
When, two semi-rings crimping flange (7) are connected to the little end flanges back side of mounting cylinder (2), are connected with crimping flange (9) by screw
Fastening.
4. a kind of all-fiber current transformator according to claim 1, it is characterised in that：The small end of the mounting cylinder (2)
Internal diameter of the flange outer diameter less than optical fiber sensing ring (3), the external diameter of big end flanges are more than the external diameter of optical fiber sensing ring (3).
5. a kind of all-fiber current transformator according to claim 1, it is characterised in that：The optical fiber sensing ring (3) is
Loop configuration, when optical fiber sensing ring (3) for it is multiple when, it is adjacent between install insulating washer (4) additional, prevent from knocking between sensing element
Touch, block electric current.
6. a kind of all-fiber current transformator according to claim 1, it is characterised in that：The shell (5) is by stainless steel
Coiled sheet system is formed, and interface has the side of mutual overlap joint and bar hole, radially has stroke, for adjusting shell radial direction and big hold-carrying
The error of blue or crimping flange end, the edge position of mutual overlap joint be pasted with bar shaped sealing strip (12), on the inside of mounting cylinder with
Big end flanges or crimping flange contact position adhesive seal ring, for waterproof and dustproof and sealing.
7. a kind of all-fiber current transformator according to claim 1, it is characterised in that：In shell (5) and mounting cylinder (2)
Big end flanges and shell (5) fastening snap ring (6) is installed outside the overlap joint of flange (9) with crimping, to fasten shell
(5), fastening snap ring (6) is banding cirque structure, and at opening, two ends are fixed with the contiguous block for being easy to mode connects for screw, is used
When, fastening snap ring (6) is buckled in shell (5) and big end flanges and crimp flange (9) coincidence position, with screw fastening after, play tightly
Gu the effect of shell (5).
8. a kind of GIS of the all-fiber current transformator based on any one of claim 1 to 7, it is characterised in that：Sensing
Unit makes GIS device form sealed air chamber between the transition bus cylinder (15) and breaker (17) of GIS；The sensing
Unit (16) and data processing unit (14) are every phase configuration one, and combining unit is three phase arrangement one.
9. a kind of GIS according to claim 8, it is characterised in that：It is attached that the data processing unit is arranged on sensing unit
Closely or in Intelligent control cabinet.
10. a kind of GIS according to claim 9, it is characterised in that：When data processing unit (14) is placed on Based Intelligent Control
When in cabinet (18), the polarization maintaining optical fibre (10) for connecting data processing unit (14) and sensing unit needs to block, installs rear weight in place
New welding simultaneously carries out accuracy test；The combining unit (19) in Intelligent control cabinet (18), with data processing unit
(14) connected using optical fiber between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014010.1U CN206038740U (en) | 2016-08-30 | 2016-08-30 | GIS uses and all -fiber current transformer thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621014010.1U CN206038740U (en) | 2016-08-30 | 2016-08-30 | GIS uses and all -fiber current transformer thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206038740U true CN206038740U (en) | 2017-03-22 |
Family
ID=58300205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621014010.1U Active CN206038740U (en) | 2016-08-30 | 2016-08-30 | GIS uses and all -fiber current transformer thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248448A (en) * | 2017-06-19 | 2017-10-13 | 河南平高电气股份有限公司 | A kind of GIS external current mutual inductors and GIS device |
| CN107332112A (en) * | 2017-06-30 | 2017-11-07 | 中国西电电气股份有限公司 | A kind of integrated system of electronic current mutual inductor and breaker |
| CN112763783A (en) * | 2020-12-14 | 2021-05-07 | 河南平高电气股份有限公司 | All-fiber current transformer and all-fiber current transformer unit |
-
2016
- 2016-08-30 CN CN201621014010.1U patent/CN206038740U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107248448A (en) * | 2017-06-19 | 2017-10-13 | 河南平高电气股份有限公司 | A kind of GIS external current mutual inductors and GIS device |
| CN107332112A (en) * | 2017-06-30 | 2017-11-07 | 中国西电电气股份有限公司 | A kind of integrated system of electronic current mutual inductor and breaker |
| CN112763783A (en) * | 2020-12-14 | 2021-05-07 | 河南平高电气股份有限公司 | All-fiber current transformer and all-fiber current transformer unit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |