CN201332016Y - Electronic type current transformer for digital transformer substation - Google Patents
Electronic type current transformer for digital transformer substation Download PDFInfo
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- CN201332016Y CN201332016Y CNU2009200386139U CN200920038613U CN201332016Y CN 201332016 Y CN201332016 Y CN 201332016Y CN U2009200386139 U CNU2009200386139 U CN U2009200386139U CN 200920038613 U CN200920038613 U CN 200920038613U CN 201332016 Y CN201332016 Y CN 201332016Y
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- transformer
- current transformer
- main body
- level winding
- digital
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Abstract
An electronic type current transformer for digital transformer substation is composed of a transformer main body and a digital converter. On the upper part of the transformer main body, a secondary measuring level winding and a secondary protection level winding are arranged on a primary electric conductor and are encapsulated by polyurethane mixed glue, only the primary high voltage lead-out terminal is exposed; a current acquiring device is arranged above the polyurethane mixed glue, and the transmitting optical fiber arranged thereon is perforated to the lower terminal low voltage side in the inner cavity of the transformer main body, the transformer main body is encapsulated by the polyurethane mixed glue; a combiner is arranged on the right line. The utility model is connected with the high and lower voltage parts of the transformer by the optical fiber, the structure is simple, the oil or the SF6 of the traditional transformer is substituted by the insulated grease, the performance of the transformer is more stabilized, the mounting and the using are simple and convenient, without maintaining the operation.
Description
Technical field:
The utility model relates to a kind of electronic current mutual inductor; particularly relate to and be used for the electronic current mutual inductor that the 110kV digital transformer substation is used; its output is the small voltage signal; can be directly and instrument, protective relaying device interface, thus realize metering, control, measure, the function of protection.
Background technology:
Along with the develop rapidly of electronic technology, microcomputer type relay protection and electronic electricity meter have progressively occupied leading position, in relaying protection and measuring, and the energy stream and the separate from information flow of control section, thereby monitoring equipment no longer needs the instrument transformer of high power output.While, therefore, developing a kind of low energy consumption New type of current instrument transformer with measurement, protection and ability to communicate was the first-selected problem of manufacturer owing to the application of fast development, the integrated automation of transformation stations and the power distribution automation of power industry.
Summary of the invention:
The purpose of this utility model is exactly that a kind of brand-new, electronic current mutual inductor compact conformation, that digital transformer substation is used will be provided.It can satisfy the needs of present electric power industry development.The purpose of this utility model is to realize like this, electronic current transformer for digitalized power substation, form by current transformer body and digitalizer two parts, it is characterized in that: the top of current transformer body, the primary conductive body is provided with secondary and measures level winding and second protection level winding, and, only expose the high-voltage terminal end one time by the embedding of polyurethane epoxy glue; The top of polyurethane epoxy glue is provided with the current acquisition device, and is through to the lower end low-pressure side by the Transmission Fibers that is provided with on it in the current transformer body inner chamber, and described current transformer body is to be formed by the embedding of polyurethane epoxy glue; The right circuit is provided with combiner.The utility model connects the high-low pressure part of instrument transformer by optical fiber, and insulation system is simple, has substituted the oil or the SF6 of traditional instrument transformer with insulation fat, and the instrument transformer performance is more stable, installs and uses simple and conveniently, and operation need not safeguarded.In light weight, precision is high, good linearity, measuring range are wide, shortcoming such as the frequency band that has overcome traditional electromagnetic current transducer is narrow, low-response.Can not produce high voltage during the Current Transformer Secondary open circuit, fundamentally eliminate the significant trouble hidden danger in the power system operation, farthest ensure the safety of personnel and equipment.Safe, the not danger such as inflammable, explosive that produces because of trapped fuel.Cost is low, and instant effect has realistic meaning to the transformation of existing transformer station electric equipment and the construction of raising and digital transformer substation.All signals transmit by the multiple twin shielding conductor, help strengthening the ability of anti-electromagnetic interference.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
1, collector, 2, secondary measures a level winding, 3, second protection level winding, 4, the polyurethane epoxy glue, 5, the primary conductive body, 6, high-voltage terminal ends, 7, Transmission Fibers, 8, current transformer body, 9, combiner.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing;
In the drawings, electronic current transformer for digitalized power substation, form by current transformer body 8 and digitalizer two parts, it is characterized in that: the top of current transformer body 8, primary conductive body 5 is provided with secondary and measures level winding 2 and second protection level winding 3, and, only expose high-voltage terminal end 6 one time by 4 embeddings of polyurethane epoxy glue; The top of polyurethane epoxy glue 4 is provided with current acquisition device 1, and is through to the lower end low-pressure side by the Transmission Fibers 7 that is provided with on it in current transformer body 8 inner chambers, and described current transformer body 8 is to be formed by 4 embeddings of polyurethane epoxy glue; The right circuit is provided with combiner 9.During concrete enforcement, adopt the design principle of Rogowski coil or the little iron core of low energy consumption, instrument transformer becomes current transformer body and digitalizer two parts to form with Transmission Fibers with the polyurethane embedding by unshakable in one's determination, winding, a secondary winding.By collector take from the high-pressure side signal by optical fiber transmission signal to low-pressure side, enter the combiner received signal.
Secondary is measured the level winding and is adopted the little ironcore choke principle of low energy consumption to be made, and second protection level winding adopts little ironcore choke principle of low energy consumption or Rogowski (Rogowski) coil principle to be made.Output voltage meets the specified secondary output voltage of IEC60044-8:2002 and GB/T208408-2007 " electronic current mutual inductor " standard.
Adopt the electronic current mutual inductor that above principle produces can be directly and instrument, protective relaying device interface, directly supporting with the digital transformer substation complex automatic system.Thereby realize the function of metering, control, measurement, protection.
Claims (1)
1. electronic current transformer for digitalized power substation, form by current transformer body (8) and digitalizer two parts, it is characterized in that: the top of current transformer body (8), primary conductive body (5) is provided with secondary and measures level winding (2) and second protection level winding (3), and, only expose a high-voltage terminal end (6) by polyurethane epoxy glue (4) embedding; The top of polyurethane epoxy glue (4) is provided with current acquisition device (1), and is through to the lower end low-pressure side by the Transmission Fibers (7) that is provided with on it in current transformer body (8) inner chamber, and described current transformer body (8) is to be formed by polyurethane epoxy glue (4) embedding; The right circuit is provided with combiner (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200386139U CN201332016Y (en) | 2009-01-05 | 2009-01-05 | Electronic type current transformer for digital transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200386139U CN201332016Y (en) | 2009-01-05 | 2009-01-05 | Electronic type current transformer for digital transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201332016Y true CN201332016Y (en) | 2009-10-21 |
Family
ID=41225398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200386139U Expired - Lifetime CN201332016Y (en) | 2009-01-05 | 2009-01-05 | Electronic type current transformer for digital transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201332016Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360886A (en) * | 2011-08-24 | 2012-02-22 | 云南电力试验研究院(集团)有限公司 | Electromagnetic and electronic hybrid current transformer |
| CN103545101A (en) * | 2013-10-22 | 2014-01-29 | 江苏靖江互感器厂有限公司 | Intelligent electronic current transformer |
-
2009
- 2009-01-05 CN CNU2009200386139U patent/CN201332016Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102360886A (en) * | 2011-08-24 | 2012-02-22 | 云南电力试验研究院(集团)有限公司 | Electromagnetic and electronic hybrid current transformer |
| CN103545101A (en) * | 2013-10-22 | 2014-01-29 | 江苏靖江互感器厂有限公司 | Intelligent electronic current transformer |
| CN103545101B (en) * | 2013-10-22 | 2016-05-11 | 江苏靖江互感器厂有限公司 | A kind of intelligent electric minor current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160810 Address after: 214500 No. 23, Ping Road, west of Jiangsu, Jingjiang, Zhenjiang Patentee after: Jingjiang Jiangsu mutual inductor Limited by Share Ltd Address before: 214500 Jiangsu Zhenjiang Jingjiang Ping Lu 8 Jiangsu Jingjiang Mutual Inductor Factory Co., Ltd. Patentee before: Xiong Jiangyong |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091021 |