CN202794295U - Photoelectric direct current transformer - Google Patents
Photoelectric direct current transformer Download PDFInfo
- Publication number
- CN202794295U CN202794295U CN 201220341482 CN201220341482U CN202794295U CN 202794295 U CN202794295 U CN 202794295U CN 201220341482 CN201220341482 CN 201220341482 CN 201220341482 U CN201220341482 U CN 201220341482U CN 202794295 U CN202794295 U CN 202794295U
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- Prior art keywords
- circuit
- optical fiber
- combiner
- photoelectric
- current transformer
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- Expired - Fee Related
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Abstract
Provided is a photoelectric direct current transformer which comprises a sensor chamber, a high-voltage side processing circuit, a transmission optical fiber and a combiner. The high-voltage side processing circuit comprises a power supply circuit, a sampling circuit and a photoelectric conversion circuit. The sampling circuit is connected with a hollow coil and a shunt resistor. The transmission optical fiber comprises a control optical fiber and a data optical fiber. The combiner is connected with a 3G communication module and a GPS module. The photoelectric direct current transformer adopts the Rogowski coil, has no iron core saturation phenomenon, is high in measurement accuracy, adopts the optical fiber to transmit control signals and data, and is safe and reliable.
Description
Technical field
The utility model relates to the power system measuring field, is specially a kind of photoelectric DC current transformer.
Background technology
DC current transformer is to measure in the DC transmission system and the elementary cell of relay protection; traditional direct current instrument transformer normally utilizes the inductive reaction principle; its shortcoming is; be difficult to accurately reflect transient current; in addition; when system broke down electric current, transformer iron core may produce the saturated accuracy decline that causes.Along with electric system to large capacity, high-tension future development, electric power digital measurement, protection, scheduling and controlling have become the trend of development, existing electromagnetic transformer since above-mentioned shortcoming can not satisfy this requirement.
The utility model content
The technical matters that the utility model solves is to provide a kind of photoelectric DC current transformer, to solve the shortcoming in the above-mentioned background technology.
The technical matters that the utility model solves realizes by the following technical solutions:
Photoelectric DC current transformer, comprise transducer room, high-pressure side treatment circuit, Transmission Fibers and combiner, described transducer room comprises copper rod and the divert shunt resistor of series connection, cover has air core coil on the described copper rod, described high-pressure side treatment circuit comprises power-supply circuit, sample circuit, photoelectric switching circuit, and described sample circuit is connected with divert shunt resistor with described air core coil; Described Transmission Fibers comprises control optical fiber and data optical fiber, and described control optical fiber connects described sample circuit and combiner, and described data optical fiber connects described photoelectric switching circuit and combiner; Described combiner is connected with a 3G communication module and a GPS module.Described combiner is comprised of dsp controller, photoelectrolysis decoding circuit, ethernet interface circuit.
Beneficial effect
The utility model adopts this lubber ring of Kenneth Rogoff, the iron-core-free saturated phenomenon, and accuracy of measurement is high, adopts Optical Fiber Transmission control signal and data, and is safe and reliable; Increase the GPS module, can accurately control the sampling instant of each sample circuit.
Description of drawings
Fig. 1 is the theory diagram of photoelectric DC current transformer.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
Referring to Fig. 1, the theory diagram of photoelectric DC current transformer, photoelectric DC current transformer, comprise transducer room 1, high-pressure side treatment circuit 2, Transmission Fibers 3 and combiner 4, described transducer room comprises copper rod 5 and the divert shunt resistor 6 of series connection, cover has air core coil 7 on the described copper rod 5, and described high-pressure side treatment circuit 2 comprises power-supply circuit 8, sample circuit 9, photoelectric switching circuit 10, and described sample circuit 9 and described air core coil 7 are connected with divert shunt resistor and are connected; Described Transmission Fibers 3 comprises control optical fiber 11 and data optical fiber 12, and described control optical fiber 11 connects described sample circuit 9 and combiner 4, and described data optical fiber 12 connects described photoelectric switching circuit 10 and combiner 4; Described combiner 4 is connected with a 3G communication module 13 and a GPS module 14.Described combiner 4 is comprised of dsp controller, photoelectrolysis decoding circuit, ethernet interface circuit.
More than show and described ultimate principle of the present utility model and principal character and advantage of the present utility model; the technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications; these changes and improvements all fall in claimed the utility model scope, and the claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (2)
1. photoelectric DC current transformer, comprise transducer room, high-pressure side treatment circuit, Transmission Fibers and combiner, described transducer room comprises copper rod and the divert shunt resistor of series connection, cover has air core coil on the described copper rod, it is characterized in that, described high-pressure side treatment circuit comprises power-supply circuit, sample circuit, photoelectric switching circuit, and described sample circuit is connected with divert shunt resistor with described air core coil; Described Transmission Fibers comprises control optical fiber and data optical fiber, and described control optical fiber connects described sample circuit and combiner, and described data optical fiber connects described photoelectric switching circuit and combiner; Described combiner is connected with a 3G communication module and a GPS module.
2. photoelectric DC current transformer according to claim 1 is characterized in that, described combiner is comprised of dsp controller, photoelectrolysis decoding circuit, ethernet interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341482 CN202794295U (en) | 2012-07-16 | 2012-07-16 | Photoelectric direct current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220341482 CN202794295U (en) | 2012-07-16 | 2012-07-16 | Photoelectric direct current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202794295U true CN202794295U (en) | 2013-03-13 |
Family
ID=47821537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220341482 Expired - Fee Related CN202794295U (en) | 2012-07-16 | 2012-07-16 | Photoelectric direct current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202794295U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362916A (en) * | 2018-02-05 | 2018-08-03 | 广东南方电力通信有限公司 | A kind of data optical fiber and end connector applied to superhigh voltage DC measuring system |
| CN110133493A (en) * | 2019-06-03 | 2019-08-16 | 浙江零壹智能电器研究院有限公司 | Residual current test system after breaker arc |
-
2012
- 2012-07-16 CN CN 201220341482 patent/CN202794295U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108362916A (en) * | 2018-02-05 | 2018-08-03 | 广东南方电力通信有限公司 | A kind of data optical fiber and end connector applied to superhigh voltage DC measuring system |
| CN110133493A (en) * | 2019-06-03 | 2019-08-16 | 浙江零壹智能电器研究院有限公司 | Residual current test system after breaker arc |
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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: 20130313 Termination date: 20150716 |
|
| EXPY | Termination of patent right or utility model |