CN201259516Y - High-voltage current sensor - Google Patents
High-voltage current sensor Download PDFInfo
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- CN201259516Y CN201259516Y CNU200820109393XU CN200820109393U CN201259516Y CN 201259516 Y CN201259516 Y CN 201259516Y CN U200820109393X U CNU200820109393X U CN U200820109393XU CN 200820109393 U CN200820109393 U CN 200820109393U CN 201259516 Y CN201259516 Y CN 201259516Y
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- ground receiving
- current
- current sensor
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Abstract
The utility model relates to a high-voltage current sensor, comprising a high-voltage part and a ground receiving part, wherein, the high-voltage part is connected with the ground receiving part by a special optical cable; and the ground receiving part transfers signal to a monitored control system by a cable. The high-voltage part comprises a sensor part on the high-voltage line, and the sensor part comprises a signal acquisition module and a central processing control module which is connected with a current-carrying resistance and a photoelectric conversion circuit. The ground receiving part comprises a data processing and protocol conversion module with is connected with a photoelectric conversion circuit and a signal output interface. The high-voltage current sensor has the advantages of simple structure, high precision, wide measuring range, small size, light weight, safety and reliability, long service life, and convenient installation and maintenance.
Description
Technical field
The utility model relates to a kind of current sensor, is specifically related to the high-tension current sensor that uses in a kind of high-tension electricity circuit.
Background technology
Existing main flow current transformer is mainly used electromagnetic induction principle, belongs to a kind of of special transformer.Mainly form by coil, iron core, shell, lead-in wire and insulating component.By the coil groups of different turn ratios, be measurable electric current with big current conversion.Because the operating characteristic of transformer, motor determines, have that measurement range is narrow, error nonlinear Distribution in the range, shortcoming such as bulky, particularly insulation against ground difficult treatment, cause using, safeguard complicated, the life-span is short, raw materials consumption is huge, also is the important disaster hidden-trouble of power industry simultaneously.
" the passive light current transformer " of the application of developing recently " polarized light produces phase change in electric field " principle.Because polarization optics crystal difficulty of processing is big, poor, the adjustment technical sophistication of consistency of product when causing producing in batches, precision and electromagnetic transformer do not take on a new look, and cost an arm and a leg.
" Rogowski air core coil principle " current transformer.It is exactly in order to develop current transformer that Rogowski air core coil principle proposes beginning, but because the voltage signal dynamic range is big, power is little, poor stability, so not widespread use.Because technical progress can carry out dynamic compensation to signal, but system-wide precision and reliability is influenced greatly by original signal, and be barely satisfactory.
The utility model content
The purpose of this utility model is the defective at above-mentioned prior art, provide a kind of simple in structure, precision is high, broad quantum, volume are little, in light weight, safe and reliable, long service life, the easy high-tension current sensor of installation and maintenance.
To achieve these goals, the technical scheme that the utility model is taked is: a kind of high-tension current sensor, comprise high-pressure section and ground receiving unit, described high-pressure section connects the ground receiving unit by special optical cable, and described ground receiving unit is given supervisory system with signal by cable transmission; Described high-pressure section comprises the Sensor section on the hi-line, and described Sensor section comprises signals collecting, central processing control module, and described signals collecting, central processing control module are connected with current-carrying resistance and photoelectric switching circuit; Described ground receiving unit comprises data processing, protocol conversion module, and described data processing, protocol conversion module are connected with photoelectric switching circuit and signal output interface.
Described signals collecting, central processing control module are connected with power management module, and described data processing, protocol conversion module are connected with electric power management circuit.
Described current-carrying resistance string is associated in the circuit-under-test.
Described current-carrying resistance adopts hollow-core construction.
Described signals collecting, central processing control module, photoelectric switching circuit, power management module are arranged in the hollow-core construction of described current-carrying resistance.
The beneficial effects of the utility model can be summarized as:
1) measuring accuracy height, parameter is many, and broad quantum directly adopts digitizing technique.Except that the current parameters that can measure the measurement of conventional current mutual inductor, temperature parameter in all right detection waveform of system, frequency, the device also can carry out temperature coefficient and adjust.Precision improves an order of magnitude than legacy equipment.Single specification range can be contained all like products at present.Also can make power department more accurate aspect electric energy metrical, more reasonable, more fair, improve the management level of power department.
2) simple in structure, volume is little, in light weight, safe and reliable, installation and maintenance are easy, long service life.Compare with legacy equipment,, saved starting material in a large number, saved the lifting operation in the installation process because volume, weight reduce (by tonne reducing to ten kilogram levels) significantly; Because the employing dry construction has saved bulky pottery body insulator and transformer oil, and is safe and reliable, reduced the workload of daily tour significantly, stopped the fire that causes by mutual inductor.
3) dwindling significantly and design feature own owing to volume, weight, significantly reduced the material consumption of steel, non-ferrous metal, saved processing difficulties, ceramic insulation tower and insulation oil plant big for environment pollution when making, in the total system except that electronic devices and components and wiring board, most materials recycling easily or in physical environment, destroy, decompose.Saving energy and reduce the cost, alleviating aspect excellent performances such as environmental pollution pressure, sustainable development.
Therefore the utlity model has simple in structure, precision is high, broad quantum, volume are little, in light weight, safe and reliable, long service life, the easy advantage of installation and maintenance.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the scheme of installation of the utility model high-pressure section.
Among the figure: 1 high-pressure section, 101 photoelectric switching circuits, 102 signals collecting, central processing control module, 1021 central processing control module, 1022 signal acquisition module, 103 current-carrying resistance, 104 power management modules, 2 ground receiving units, 201 data processing, protocol conversion module, 202 photoelectric conversion modules, 203 signal output interfaces, 204 electric power management circuits, 205 demonstrations, printing, keyboard, mouse interface.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, but not as to qualification of the present utility model.
Referring to Fig. 1, a kind of high-tension current sensor comprises high-pressure section 1 and ground receiving unit 2, and high-pressure section 1 connects ground receiving unit 2 by special optical cable, and ground receiving unit 2 is given supervisory system with signal by cable transmission; Described high-pressure section 1 comprises the Sensor section on the hi-line, and Sensor section is fixed on hi-line or the equipment such as bus, switch; Sensor section comprises signals collecting, central processing control module 102, and signals collecting, central processing control module 102 are connected with current-carrying resistance 103, photoelectric switching circuit 101, power management module 104, and current-carrying resistance 103 is connected in the circuit-under-test; Ground receiving unit 2 comprises data processing, protocol conversion module 201, data processing, protocol conversion module 201 are connected with photoelectric conversion module 202 and signal output interface 203, electric power management circuit 204, data processing, protocol conversion module 201 can also connect demonstration, printing, keyboard, mouse interface 205 as required, power management module 104 and electric power management circuit 203 also are connected with reserve battery 105 respectively, and ground receiving unit 2 is arranged in the pulpit or other suitable space of transformer and distribution power station.
Referring to Fig. 2, current-carrying resistance 103 is hollow-core construction, two ends are connected in the circuit-under-test, the extension line of 103 two links of current-carrying resistance is connected with signal acquisition module 1022 respectively, the resistance of current-carrying resistance can be selected as required, central processing control module 1021, photoelectric switching circuit 101, power management module 104 all place current-carrying resistance 103 inside, central processing control module 1021, are connected with signal acquisition module 1022, photoelectric switching circuit 101 and power management module 104 respectively; Power management module 104 connects reserve battery 105 and supply line 106 respectively, and photoelectric switching circuit 101 connects ground receiving unit 2.
High-pressure side electronic circuit and auxiliary electronic equipment can be arranged in the hollow-core construction of current-carrying resistive element, also can be arranged in the casing or cylindrical shell of electricity, magnetic dual shield.
Central processing control module 1021, be used for the signals collecting of control signal acquisition module and the analog voltage signal that the received signal acquisition module sends, analog voltage signal is converted into digital voltage signal, and digital voltage signal carried out package and encryption, send digital voltage signal through package and encryption.
Know-why of the present utility model: the principle that will measure the two ends pressure drop of current-carrying resistance is applied to the measurement of high pressure or ultra-high pressure current; With the core component of current-carrying resistance as sensor, the pressure drop that produces when using electronic circuit that electric current is flow through current-carrying resistance is sampled, analyzes, is simulated, carry out digital conversion, modulation, encryption, opto-electronic conversion again, cause the ground receiving unit through optical fiber or optical cable biography; The ground receiving unit carries out data processing, and signal is passed to control computer.Other compartition goes out digital signal and carries out numeral---analog-converted, passes to traditional simulation kind equipment.
Above-described embodiment is a kind of of the common embodiment of the utility model, and common variation that those skilled in the art carries out in the art of this patent scheme scope and replacement all should be included in the protection domain of the present utility model.
Claims (5)
1. high-tension current sensor is characterized in that: comprise high-pressure section and ground receiving unit, described high-pressure section connects the ground receiving unit by special optical cable, and described ground receiving unit is given supervisory system with signal by cable transmission; Described high-pressure section comprises the Sensor section on the hi-line, and described Sensor section comprises signals collecting, central processing control module, and described signals collecting, central processing control module are connected with current-carrying resistance and photoelectric switching circuit; Described ground receiving unit comprises data processing, protocol conversion module, and described data processing, protocol conversion module are connected with photoelectric switching circuit and signal output interface.
2. by the described high-tension current sensor of claim 1, it is characterized in that: described signals collecting, central processing control module are connected with power management module, and described data processing, protocol conversion module are connected with electric power management circuit.
3. by the described high-tension current sensor of claim 1, it is characterized in that: described current-carrying resistance string is associated in the circuit-under-test.
4. by each described high-tension current sensor of claim 1-3, it is characterized in that: described current-carrying resistance adopts hollow-core construction.
5. by the described high-tension current sensor of claim 4, it is characterized in that: described signals collecting, central processing control module, photoelectric switching circuit, power management module are arranged in the hollow-core construction of described current-carrying resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109393XU CN201259516Y (en) | 2008-07-23 | 2008-07-23 | High-voltage current sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820109393XU CN201259516Y (en) | 2008-07-23 | 2008-07-23 | High-voltage current sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201259516Y true CN201259516Y (en) | 2009-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820109393XU Expired - Fee Related CN201259516Y (en) | 2008-07-23 | 2008-07-23 | High-voltage current sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201259516Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595476A (en) * | 2012-08-13 | 2014-02-19 | 成都思迈科技发展有限责任公司 | A USB power supply fiber transmit-receive apparatus |
-
2008
- 2008-07-23 CN CNU200820109393XU patent/CN201259516Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103595476A (en) * | 2012-08-13 | 2014-02-19 | 成都思迈科技发展有限责任公司 | A USB power supply fiber transmit-receive apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090617 Termination date: 20170723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |