CN212969458U - Photoelectric transmission isolation power supply - Google Patents
Photoelectric transmission isolation power supply Download PDFInfo
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- CN212969458U CN212969458U CN202021472891.8U CN202021472891U CN212969458U CN 212969458 U CN212969458 U CN 212969458U CN 202021472891 U CN202021472891 U CN 202021472891U CN 212969458 U CN212969458 U CN 212969458U
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Abstract
The utility model relates to a photoelectric transmission keeps apart power, including transmitting terminal unit, light path straightener and receiving terminal unit. The transmitting end unit is used for obtaining a power signal and converting the power signal into an optical signal by an external power supply. The optical path straightening device is used for straightening optical signals and transmitting the straightened optical signals. The receiving end unit is used for receiving the straightened optical signal and converting the straightened optical signal into an electric signal to be provided for a load. The transmitting end unit comprises an isolation transformer, a luminous source and an AC/DC luminous power management circuit which is used for carrying out AC/DC conversion and managing the luminous efficiency of the luminous source. The optical path straightening device comprises a straightening mirror. The receiving end unit includes a photoelectric converter, a DC/AC or DC/DC load management circuit for performing direct current-alternating current conversion or direct current conversion and managing a load. The receiving end unit further comprises a communication module used for feeding back the working condition of the load to the input module. The utility model discloses regard as energy transmission medium with light, transmission distance is long, insulating withstand voltage stress height, has anti short circuit ability reinforce, advantage such as operation safe and reliable.
Description
Technical Field
The utility model relates to a power supply unit.
Background
The success of project networking of a north 500kV flexible direct-current power grid test of 25 days in 6 and 25 months in 2020 means that a direct-current extra-high voltage networking technology tends to be mature, and a sequence screen is pulled out for large-scale networking of a direct-current extra-high voltage line. And then networking of the extra-high voltage power grid of direct current 800kV and direct current 1100kV is about to be promoted. According to the technical requirements of the DC 800kV and DC 1100kV extra-high voltage power grids, the requirements of extra-high voltage equipment on the insulation withstand voltage stress of energy supply equipment are higher and higher, and the traditional isolation power supply cannot meet the requirements of the insulation withstand voltage stress of the extra-high voltage equipment, so that the advance of the networking technology of the DC 800kV and DC 1100kV extra-high voltage power grids is restricted. Therefore, in order to meet the requirement of insulation withstand voltage stress of energy supply power equipment and improve the operation reliability of the extra-high voltage direct current power grid, a novel power supply device needs to be designed.
Disclosure of Invention
The utility model aims at providing an insulating withstand voltage is high, the reliability is high, is particularly useful for the photoelectric transmission isolation power supply who equips the energy supply for extra-high voltage in the extra-high voltage flexible network deployment of direct current.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
an opto-electrical transmission isolated power supply for powering a load, the opto-electrical transmission isolated power supply comprising:
the transmitting terminal unit is used for obtaining a power supply signal by an external power supply and converting the power supply signal into an optical signal;
the optical path straightening device is used for straightening the optical signal and transmitting the straightened optical signal;
the receiving end unit is used for receiving the straightened optical signal and converting the optical signal into an electric signal to be provided for the load;
the transmitting end unit and the receiving end unit are respectively arranged at two ends of the optical path straightener.
The transmitting end unit comprises a luminous source and an AC/DC luminous power management circuit used for carrying out alternating current-direct current conversion and managing the luminous efficiency of the luminous source, and the luminous source is connected with the direct current side of the AC/DC luminous power management circuit.
The transmitting end unit further comprises an isolation transformer, the primary side of the isolation transformer is connected with the external power supply, and the secondary side of the isolation transformer is connected with the alternating current side of the AC/DC luminous power management circuit.
The luminous source comprises a plurality of LEDs connected in parallel.
The optical path straightening device comprises a straightening mirror, and an optical path transmission space for transmitting the straightened optical signal is formed between the straightening mirror and the receiving end unit.
And the transmission distance of the straightened optical signal is 0.1-1000 meters.
The light path straightening device further comprises a shell arranged outside the straightening mirror, and the light path transmission space is formed in the shell.
The receiving end unit comprises a photoelectric converter and a DC/AC or DC/DC load management circuit used for carrying out direct current-alternating current conversion or direct current conversion and managing the load, the photoelectric converter is connected with the input side of the DC/AC or DC/DC load management circuit, and the load is connected with the output side of the DC/AC or DC/DC load management circuit.
The receiving end unit further comprises a communication module used for feeding back the working condition of the load to the transmitting end unit, and the communication module is connected with the DC/AC or DC/DC load management circuit.
The communication module is an RS485 communication module.
Because of the application of the technical scheme, compared with the prior art, the utility model has the following advantages: the utility model discloses regard as energy transmission medium with light, transmission distance is long, insulating withstand voltage stress height, has anti short circuit ability reinforce, and advantages such as operation safe and reliable are suitable for the extra-high voltage equipment energy supply in the flexible network deployment of extra-high voltage for direct current.
Drawings
Fig. 1 is a schematic diagram of the photoelectric transmission isolation power supply of the present invention.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings.
The first embodiment is as follows: as shown in fig. 1, an isolated power supply for photoelectric transmission includes a transmitting end unit, an optical path straightener and a receiving end unit, which are sequentially disposed. The two ends of the optical path straightener are respectively the input end and the output end, and the transmitting end unit and the receiving end unit are respectively arranged at the two ends of the optical path straightener, namely the transmitting end unit is arranged at one side of the input end of the optical path straightener, and the receiving end unit is arranged at one side of the output end of the optical path straightener.
The transmitting end unit is used for obtaining a power supply signal by an external power supply and converting the power supply signal into an optical signal. The transmitting end unit comprises an isolation transformer, an AC/DC luminous power management circuit and a luminous source, wherein the isolation transformer is used for voltage conversion and voltage isolation, the AC/DC luminous power management circuit is used for performing alternating current-direct current conversion and managing luminous efficiency of the luminous source, and the luminous source emits light to convert an electric signal into an optical signal. The primary side of the isolation transformer is connected with an alternating current external power supply, the secondary side of the isolation transformer is connected with the alternating current side of the AC/DC luminous power management circuit, and the luminous source is connected with the direct current side of the AC/DC luminous power management circuit. The light emitting source comprises a plurality of high efficiency LEDs connected in parallel.
The optical path straightening device is used for straightening optical signals and transmitting the straightened optical signals. The optical path straightening device comprises a straightening mirror, and an optical path transmission space for transmitting straightened optical signals is formed between the straightening mirror and the receiving end unit. The transmission distance of the straightened optical signal is 0.1-1000 m, and the straightened optical signal is transmitted in an air medium of an optical path transmission space. The light path straightening device can further comprise a shell, the shell is arranged outside the straightening mirror, and a light path transmission space is formed in the shell.
The receiving end unit is used for receiving the straightened optical signal and converting the straightened optical signal into an electric signal to be provided for a load. The receiving end unit includes a photoelectric converter, a DC/AC or DC/DC load management circuit. The photoelectric converter is used for converting the rectified optical signal into an electric signal, and the DC/AC or DC/DC load management circuit is used for performing direct current-alternating current conversion or direct current conversion and managing the power supply of the load. The opto-electric converter is connected to the input side of the DC/AC or DC/DC load management circuit and the load is connected to the output side of the DC/AC or DC/DC load management circuit. The receiving end unit can also comprise a communication module, such as an RS485 communication module. The communication module is connected with the DC/AC or DC/DC load management circuit and is used for feeding back the working condition of the load to the transmitting end unit, so that the load can be managed through the transmitting end.
The photoelectric transmission isolation power supply is used for supplying power to a load (such as extra-high voltage equipment), and the principle is as follows: the AC external power supply is isolated by the isolation transformer, transformed and sent to the AC/DC luminous power management circuit, converted into a DC power supply signal and provided for the luminous source, and the luminous source emits light under the management of the AC/DC luminous power management circuit, so that electric energy is converted into light energy. The application of the isolation transformer can further improve the isolation voltage tolerance reliability. In order to maximize energy transfer, the optical path transfer employs an optical path straightener. The light emitted by the light source is straightened into a group of light rays transmitted in the same direction after passing through the straightening mirror and is transmitted in the light path transmission space. The transmission distance of the straightened optical signal is 0.1-1000 m and can exceed 1000 m (the transmission distance of the optical signal is the distance from the straightening mirror to the photoelectric converter), the voltage endured between the transmitting end unit and the receiving end unit of the power supply is from 10kV to 10000kV or more than 10000kV, namely, the endured voltage is increased along with the increase of the transmission distance of the optical signal. The high-efficiency photoelectric converter receives the straightened optical signal output by the optical path transmission space and converts the straightened optical signal into an electric signal. In order to further improve the energy conversion efficiency, the receiving end adopts the load management circuit to maintain the highest transmission efficiency, and the electric signal converted by the photoelectric converter is provided for the load through the load management circuit.
The utility model discloses an utilize the light transmission energy, effectively improved energy supply power equipment's insulating withstand voltage stress to improve the operational reliability of special high voltage direct current electric wire netting, it can the reinforce to have anti short circuit, advantage such as operation safe and reliable. The technology can promote the progress of the direct-current extra-high voltage power grid and the related technology.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. An isolated power supply for optical-electrical transmission, for supplying power to a load, comprising: the photoelectric transmission isolation power supply comprises:
the transmitting terminal unit is used for obtaining a power supply signal by an external power supply and converting the power supply signal into an optical signal;
the optical path straightening device is used for straightening the optical signal and transmitting the straightened optical signal;
the receiving end unit is used for receiving the straightened optical signal and converting the optical signal into an electric signal to be provided for the load;
the transmitting end unit and the receiving end unit are respectively arranged at two ends of the optical path straightener.
2. The isolated power supply for optical-electrical transmission of claim 1, wherein: the transmitting end unit comprises a luminous source and an AC/DC luminous power management circuit used for carrying out alternating current-direct current conversion and managing the luminous efficiency of the luminous source, and the luminous source is connected with the direct current side of the AC/DC luminous power management circuit.
3. The isolated power supply for optical-electrical transmission of claim 2, wherein: the transmitting end unit further comprises an isolation transformer, the primary side of the isolation transformer is connected with the external power supply, and the secondary side of the isolation transformer is connected with the alternating current side of the AC/DC luminous power management circuit.
4. The isolated power supply for optical-electrical transmission of claim 2, wherein: the luminous source comprises a plurality of LEDs connected in parallel.
5. The isolated power supply for optical-electrical transmission of claim 1, wherein: the optical path straightening device comprises a straightening mirror, and an optical path transmission space for transmitting the straightened optical signal is formed between the straightening mirror and the receiving end unit.
6. The isolated power supply for optical-electrical transmission of claim 5, wherein: and the transmission distance of the straightened optical signal is 0.1-1000 meters.
7. The isolated power supply for optical-electrical transmission of claim 5, wherein: the light path straightening device further comprises a shell arranged outside the straightening mirror, and the light path transmission space is formed in the shell.
8. The isolated power supply for optical-electrical transmission of claim 1, wherein: the receiving end unit comprises a photoelectric converter and a DC/AC or DC/DC load management circuit used for carrying out direct current-alternating current conversion or direct current conversion and managing the load, the photoelectric converter is connected with the input side of the DC/AC or DC/DC load management circuit, and the load is connected with the output side of the DC/AC or DC/DC load management circuit.
9. The isolated power supply for optical-electrical transmission of claim 8, wherein: the receiving end unit further comprises a communication module used for feeding back the working condition of the load to the transmitting end unit, and the communication module is connected with the DC/AC or DC/DC load management circuit.
10. The isolated power supply for optical-electrical transmission of claim 9, wherein: the communication module is an RS485 communication module.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2020213228040 | 2020-07-08 | ||
| CN202021322804 | 2020-07-08 |
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| CN212969458U true CN212969458U (en) | 2021-04-13 |
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| CN202021472891.8U Active CN212969458U (en) | 2020-07-08 | 2020-07-23 | Photoelectric transmission isolation power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410916A (en) * | 2021-08-20 | 2021-09-17 | 成都金迈微科技有限公司 | Monitoring system and method for photovoltaic power converter in optical fiber power supply system |
| CN115459594A (en) * | 2022-10-17 | 2022-12-09 | 广东工业大学 | Novel isolated photon converter and control method thereof |
| CN116094324A (en) * | 2022-10-17 | 2023-05-09 | 广东工业大学 | Novel variable-structure photon converter and control method thereof |
-
2020
- 2020-07-23 CN CN202021472891.8U patent/CN212969458U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410916A (en) * | 2021-08-20 | 2021-09-17 | 成都金迈微科技有限公司 | Monitoring system and method for photovoltaic power converter in optical fiber power supply system |
| CN115459594A (en) * | 2022-10-17 | 2022-12-09 | 广东工业大学 | Novel isolated photon converter and control method thereof |
| CN116094324A (en) * | 2022-10-17 | 2023-05-09 | 广东工业大学 | Novel variable-structure photon converter and control method thereof |
| CN115459594B (en) * | 2022-10-17 | 2023-05-23 | 广东工业大学 | Novel isolated photon converter and control method thereof |
| CN116094324B (en) * | 2022-10-17 | 2023-08-15 | 广东工业大学 | Variable-structure photon converter |
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