CN207148198U - A kind of electronic current mutual inductor based on current divider principle - Google Patents
A kind of electronic current mutual inductor based on current divider principle Download PDFInfo
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- CN207148198U CN207148198U CN201721018554.XU CN201721018554U CN207148198U CN 207148198 U CN207148198 U CN 207148198U CN 201721018554 U CN201721018554 U CN 201721018554U CN 207148198 U CN207148198 U CN 207148198U
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- current divider
- optical fiber
- mutual inductor
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Abstract
It the utility model is related to electric mutual inductor field, a kind of electronic current mutual inductor based on current divider principle is specifically provided, its structure includes Primary Conductor, current divider, primary transducer and optical fiber, current divider is serially connected with Primary Conductor, the small voltage signal access primary transducer that current divider is changed out, primary transducer electrical connection optical fiber.Compared with prior art, the electronic current mutual inductor of the present utility model based on current divider principle does not have the influence of electromagnetism saturation, and the current data of collection has higher precision, and product has higher reliability, has good application value.
Description
Technical field
It the utility model is related to a kind of current transformer, specifically a kind of electronic current based on current divider principle
Transformer.
Background technology
One of developing goal of intelligent grid is to realize that the plug and play that interconnects, data between Electric Power Automation Equipment are common
Enjoy, resource intensive utilizes.And with the iterative method of China's intelligent grid construction, the easy saturation of electromagnetic current transducer, absolutely
The problems such as edge cost is high fails effectively to be solved all the time, and based on the electronic type of Rogowski coil and all -fiber technology electricity
Current transformer research and development of products does not reach preferable practical effect well still at present.
Patent No. CN102928641A patent document discloses a kind of electronic current mutual inductor, including current divider,
Data-converting block, optical signal modular converter and transformer combining unit；Wherein：Data-converting block is used to turn analog signal
Data signal is changed to, optical signal modular converter is used to convert electrical signals to optical signal；The both ends connection numeral conversion of current divider
Two inputs of module；Two inputs of the two output ends connection optical signal modular converter of data-converting block, optical signal conversion
The optical signal of module output is input to transformer combining unit.But the technical scheme has that current data precision is low, and product can
By property it is low the shortcomings that.
The content of the invention
Technical assignment of the present utility model is to be directed to deficiency of the prior art, there is provided a kind of electricity based on current divider principle
Type current transformer.
Technical assignment of the present utility model realizes in the following manner, a kind of electronic current based on current divider principle
Transformer, including Primary Conductor, current divider, primary transducer and optical fiber, current divider are serially connected with Primary Conductor, current divider conversion
The small voltage signal access primary transducer gone out, primary transducer electrical connection optical fiber.
Preferably, primary transducer connects including power module, signal acquisition return circuit module, data processing module and optical fiber
Mouthful, the small voltage signal access signal acquisition return circuit module that current divider is changed out, signal acquisition return circuit module electrical connection data
Processing module, data processing module are electrically connected optical fiber by optical fiber interface；Wherein, signal acquisition return circuit module is small for completing
The signal condition filtering and data signal conversion of voltage signal；Data processing module is used to change signal acquisition return circuit module
The data signal gone out is sent out according to stipulations definition by optical fiber interface and optical-fibre communications；Power module is electrically connected signal and adopted respectively
Collect return circuit module, data processing module and optical fiber interface and powered for it.
Preferably, current divider and Primary Conductor are physically the entirety that completely can not be split.
More preferably, the resistance scope of current divider is the micro-ohm of 2 micro-ohm -100, and the resistance of current divider is according to specified electricity
Flow valuve selects in 2 micro-ohms to 100 micro-ohm scopes.
More preferably, primary transducer is physically combined closely with Primary Conductor and primary transducer and Primary Conductor are etc.
Current potential.
More preferably, the power module of primary transducer includes two power supplies, and two power supplies are small voltage respectively
Signal-powered power supply and laser powered sensor power supply, the signal-powered power supply of small voltage are used to power during normal transmission operation, laser powered sensor
Power supply is used to power during line outage.
More preferably, in addition to insulating support member, insulating support member are used for Primary Conductor, current divider, primary transducer
And the physical insulation and structural support of optical fiber, insulating support member is with said elements without electric connecting relation.
More preferably, described Primary Conductor one end is provided with ring flange and external terminal board, the other end is provided with wiring
The anchor ear of plate；Cover body is provided with the outside of Primary Conductor, cover body is fixedly connected with ring flange, and ring flange connects with being fixed to external terminal board
Connect and insulating washer is provided with ring flange, insulating washer is used for isolating between ring flange and cover body.
Electronic current mutual inductor of the present utility model based on current divider principle has advantages below：
（One）, the utility model the primary side current signal of power system is converted into by small voltage signal by current divider,
Processing is acquired to small voltage signal by signal acquisition return circuit module again, finally provides and is adopted for the electric current of protection
Sampling point data signal, the electronic current mutual inductor based on current divider principle do not have the influence of electromagnetism saturation, the current data of collection
With higher precision, product has higher reliability；
（Two）, primary transducer of the present utility model designed using dual power supply, with small voltage signal during normal transmission operation
Based on power taking, line outage when supplemented by laser powered sensor, it is ensured that the stability and reliability of power supply；
（Three）, the utility model primary transducer and Primary Conductor physically combine closely, and with the electricity such as Primary Conductor
Position design, ultimately form the whole parts of an entirety.
Brief description of the drawings
The utility model is further illustrated below in conjunction with the accompanying drawings.
Fig. 1 is the structured flowchart of the electronic current mutual inductor based on current divider principle；
Fig. 2 is the structural representation of the electronic current mutual inductor based on current divider principle；
Fig. 3 is the electronic current mutual inductor band cover body overall structure diagram based on current divider principle.
In figure：1st, Primary Conductor, 2, current divider, 3, primary transducer, 4, optical fiber, 5, power module, 6, signal acquisition returns
Road module, 7, data processing module, 8, optical fiber interface, 9, insulating support member, 10, cover body, 11, ring flange, 12, to external connection
Plate, 13, the anchor ear with terminal plate, 14, insulating washer.
Embodiment
It is mutual to the electronic current of the present utility model based on current divider principle with reference to Figure of description and specific embodiment
Sensor is described in detail below.
Embodiment：
As shown in figure 1 and 2, the electronic current mutual inductor of the present utility model based on current divider principle, its structure master
If being made up of Primary Conductor 1, current divider 2, primary transducer 3, optical fiber 4 and insulating support member 9, insulating support member 9 is used
In the physical insulation and structural support of Primary Conductor 1, current divider 2, primary transducer 3 and optical fiber 4, insulating support member 9 with
Said elements are without electric connecting relation.Current divider 2 is serially connected with Primary Conductor 1, and current divider 2 is physically with Primary Conductor 1
One entirety that completely can not be split, it is ensured that quick and easy for installation.The resistance of current divider 2 is micro- 2 according to load current value
Europe selects to 100 micro-ohm scopes.The small voltage signal access primary transducer 3 that current divider 2 is changed out, primary transducer 3 and one
Partial conductor 1 is physically combined closely and primary transducer 3 and Primary Conductor 1 are equipotential.Primary transducer 3 is electrically connected light
Fibre 4.Primary transducer 3 includes power module 5, signal acquisition return circuit module 6, data processing module 7 and optical fiber interface 8, shunting
The small voltage signal access signal acquisition return circuit module 6 that device 2 is changed out, signal acquisition return circuit module 6 is electrically connected data processing
Module 7, data processing module 7 are electrically connected optical fiber 4 by optical fiber interface 8；Wherein, signal acquisition return circuit module 6 is used to complete
The signal condition filtering and data signal conversion of small voltage signal；Data processing module 7 is used for signal acquisition return circuit module
The data signal changed out is simultaneously sent out according to stipulations definition by optical fiber interface 8 and the communication of optical fiber 4；Power module 5 is electric respectively
Connect signal acquisition return circuit module 6, data processing module 7 and optical fiber interface 8 and powered for it.The power supply mould of primary transducer 3
Block 5 includes two power supplies, and two power supplies are the signal-powered power supply of small voltage and laser powered sensor power supply respectively, small voltage
Signal-powered power supply is used to power during normal transmission operation, and laser powered sensor power supply is used to power during line outage, normal power transmission fortune
During row based on small voltage signal power taking, during line outage supplemented by laser powered sensor.
As shown in Figure 3, one end mounting flange 11 of Primary Conductor 1 and to external terminal board 12, other end installation is with connecing
The anchor ear 13 of line plate；The outside of Primary Conductor 1 installation cover body 10, cover body 10 are fixedly connected with ring flange 11, ring flange 11 with it is external
Terminal plate 12 be fixedly connected and on ring flange 11 install insulating washer 14, insulating washer 14 be used between ring flange and cover body every
From.
Specific work process：The primary side current signal of power system is converted into by small voltage signal by current divider 2, then
Processing is acquired to small voltage signal by signal acquisition return circuit module 6 and data processing module 7, finally provided for protecting
The current sample point data signal of measurement is protected, primary transducer 3 is defined numeral by optical fiber interface 8 and optical fiber 4 according to stipulations
Signal communication is sent out.
Claims (7)
- A kind of 1. electronic current mutual inductor based on current divider principle, it is characterised in that：Including Primary Conductor, current divider, one Secondary converter and optical fiber, current divider are serially connected with Primary Conductor, the small voltage signal access primary transducer that current divider is changed out, Primary transducer is electrically connected optical fiber；Primary transducer includes power module, signal acquisition return circuit module, data processing module and optical fiber interface, current divider conversion The small voltage signal access signal acquisition return circuit module gone out, signal acquisition return circuit module electrical connection data processing module, data Processing module is electrically connected optical fiber by optical fiber interface；Wherein, signal acquisition return circuit module is used for the letter for completing small voltage signal Number conditioning filtering and data signal conversion；Data processing module is used for the data signal for changing out signal acquisition return circuit module Sent out according to stipulations definition by optical fiber interface and optical-fibre communications；Power module be electrically connected respectively signal acquisition return circuit module, Data processing module and optical fiber interface are simultaneously powered for it.
- 2. the electronic current mutual inductor according to claim 1 based on current divider principle, it is characterised in that：Current divider with Primary Conductor is physically the entirety that completely can not be split.
- 3. the electronic current mutual inductor according to claim 1 or 2 based on current divider principle, it is characterised in that：Shunting The resistance scope of device is the micro-ohm of 2 micro-ohm -100.
- 4. the electronic current mutual inductor according to claim 3 based on current divider principle, it is characterised in that：Once change Device is physically combined closely with Primary Conductor and primary transducer and Primary Conductor are equipotential.
- 5. the electronic current mutual inductor according to claim 4 based on current divider principle, it is characterised in that：Once change The power module of device includes two power supplies, and two power supplies are the signal-powered power supply of small voltage and laser powered sensor electricity respectively Source, the signal-powered power supply of small voltage are used to power during normal transmission operation, and laser powered sensor power supply is used to power during line outage.
- 6. the electronic current mutual inductor according to claim 5 based on current divider principle, it is characterised in that：Also include exhausted Edge support member, insulating support member are used for the physical insulation and structure of Primary Conductor, current divider, primary transducer and optical fiber Support.
- 7. the electronic current mutual inductor according to claim 6 based on current divider principle, it is characterised in that：It is described once Conductor one end is provided with ring flange and to external terminal board, and the other end is provided with the anchor ear with terminal plate；Set on the outside of Primary Conductor Cover body is equipped with, cover body is fixedly connected with ring flange, and ring flange is fixedly connected with to external terminal board and insulation is provided with ring flange Packing ring, insulating washer are used for isolating between ring flange and cover body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721018554.XU CN207148198U (en) | 2017-08-15 | 2017-08-15 | A kind of electronic current mutual inductor based on current divider principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721018554.XU CN207148198U (en) | 2017-08-15 | 2017-08-15 | A kind of electronic current mutual inductor based on current divider principle |
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| CN207148198U true CN207148198U (en) | 2018-03-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900946A (en) * | 2019-03-26 | 2019-06-18 | 山东联合电力技术有限公司 | A kind of shell mechanism of the electronic current mutual inductor based on electric resistance partial pressure |
| CN116243043A (en) * | 2023-02-07 | 2023-06-09 | 泰安市众诚自动化软件有限公司 | Explosion-proof type voltage current transformer of motor side |
-
2017
- 2017-08-15 CN CN201721018554.XU patent/CN207148198U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900946A (en) * | 2019-03-26 | 2019-06-18 | 山东联合电力技术有限公司 | A kind of shell mechanism of the electronic current mutual inductor based on electric resistance partial pressure |
| CN116243043A (en) * | 2023-02-07 | 2023-06-09 | 泰安市众诚自动化软件有限公司 | Explosion-proof type voltage current transformer of motor side |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200917 Address after: 250101 room 1601, block a, building 1, Jinan pharmaceutical Valley R & D platform zone, No. 1, north section of Gangxing Third Road, comprehensive bonded zone, Jinan high tech Zone, Shandong Province Patentee after: Shandong United Power Industry Development Co.,Ltd. Address before: 250101 main building No. 1351, No. 1351, opening Road, Hi-tech Zone, Shandong Province Patentee before: SHANDONG LIANHE POWER TECHNOLOGY Co.,Ltd. |