CN211627677U - Remote optical fiber data acquisition device for reactive compensation - Google Patents
Remote optical fiber data acquisition device for reactive compensation Download PDFInfo
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- CN211627677U CN211627677U CN201922370134.3U CN201922370134U CN211627677U CN 211627677 U CN211627677 U CN 211627677U CN 201922370134 U CN201922370134 U CN 201922370134U CN 211627677 U CN211627677 U CN 211627677U
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Abstract
The utility model discloses a remote optical fiber data acquisition device for reactive power compensation, which comprises a voltage transformer, a current transformer, an analog-to-digital conversion circuit, a first photoelectric conversion circuit, a transmission optical fiber, a second photoelectric conversion circuit, a digital-to-analog conversion circuit and a controller; the voltage transformer is connected with a first input end of the analog-to-digital conversion circuit, the current transformer is connected with a second input end of the analog-to-digital conversion circuit, an output end of the analog-to-digital conversion circuit is connected with an input end of the first photoelectric conversion circuit, an output end of the first photoelectric conversion circuit is connected with one end of the transmission optical fiber, the other end of the transmission optical fiber is connected with an input end of the second photoelectric conversion circuit, an output end of the second photoelectric conversion circuit is connected with an input end of the digital-to-analog conversion circuit, and an output end of the digital-to-analog conversion circuit is connected with the controller. The utility model discloses the interference killing feature is strong, and transmission precision is high, can not arouse the controller malfunction, and low power dissipation is suitable outdoor in addition used.
Description
Technical Field
The utility model relates to a reactive compensation technical field especially relates to a reactive compensation is with long-range optic fibre data acquisition device.
Background
At present, reactive power compensation devices become effective measures for improving power supply conditions and improving electric energy utilization rate, and the national power department stipulates that all places where low-voltage transformers and large-scale electric equipment are installed should be equipped with reactive power compensation devices, and the reactive power compensation devices can be divided into outdoor, indoor, frame-type, cabinet-type, fixed switching, grouped automatic switching and the like according to operation modes and structure modes. The grouped automatic switching type reactive power compensation device is widely applied because the compensation capacity can be adjusted according to load change, voltage and current signals need to be collected from a power supply end, the distance from the reactive power compensation device is usually far away from the reactive power compensation device body, the transmission precision is influenced by distance, radio frequency interference, electromagnetic interference or high-voltage interference and the like by adopting low-voltage cable transmission, and misoperation of the controller can be caused even in severe cases.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that the above background art part mentioned through a remote optical fiber data acquisition device for reactive compensation.
To achieve the purpose, the utility model adopts the following technical proposal:
a remote optical fiber data acquisition device for reactive compensation comprises a voltage transformer, a current transformer, an analog-to-digital conversion circuit, a first photoelectric conversion circuit, a transmission optical fiber, a second photoelectric conversion circuit, a digital-to-analog conversion circuit and a controller; the voltage transformer is connected with a first input end of the analog-to-digital conversion circuit, the current transformer is connected with a second input end of the analog-to-digital conversion circuit, an output end of the analog-to-digital conversion circuit is connected with an input end of the first photoelectric conversion circuit, an output end of the first photoelectric conversion circuit is connected with one end of the transmission optical fiber, the other end of the transmission optical fiber is connected with an input end of the second photoelectric conversion circuit, an output end of the second photoelectric conversion circuit is connected with an input end of the digital-to-analog conversion circuit, and an output end of the digital-to-analog conversion circuit is connected with the controller.
Particularly, the remote optical fiber data acquisition device for reactive compensation further comprises a feedback circuit; the feedback circuit is connected with the controller.
In particular, the remote optical fiber data acquisition device for reactive compensation further comprises a self-checking circuit; the self-checking circuit is connected with the feedback circuit.
The utility model provides a remote optical fiber data acquisition device for reactive compensation carries out the transmission of energy and data based on optic fibre, and the interference killing feature is strong, compares with traditional low tension cable line transmission mode, does not receive distance, radio frequency interference, electromagnetic interference or high-pressure interference, and the transmission precision is high, can not arouse the controller malfunction, and low power dissipation is suitable outdoor in addition.
Drawings
Fig. 1 is the embodiment of the utility model provides a remote fiber data acquisition device structure chart for reactive compensation.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a structural diagram of a remote optical fiber data acquisition device for reactive power compensation according to an embodiment of the present invention.
In this embodiment, the remote optical fiber data acquisition device 100 for reactive power compensation specifically includes a voltage transformer 101, a current transformer 102, an analog-to-digital conversion circuit 103, a first photoelectric conversion circuit 104, a transmission optical fiber 105, a second photoelectric conversion circuit 106, a digital-to-analog conversion circuit 107, and a controller 108; the voltage transformer 101 is connected with a first input end of an analog-to-digital conversion circuit 103, the current transformer 102 is connected with a second input end of the analog-to-digital conversion circuit 103, an output end of the analog-to-digital conversion circuit 103 is connected with an input end of a first photoelectric conversion circuit 104, an output end of the first photoelectric conversion circuit 104 is connected with one end of a transmission optical fiber 105, the other end of the transmission optical fiber 105 is connected with an input end of a second photoelectric conversion circuit 106, an output end of the second photoelectric conversion circuit 106 is connected with an input end of a digital-to-analog conversion circuit 107, and an output end of the digital-to-analog conversion circuit 107 is connected with a controller 108.
Specifically, in this embodiment, the remote optical fiber data acquisition device 100 for reactive compensation further includes a feedback circuit 109; the feedback circuit 109 is connected to the controller 108. Specifically, in this embodiment, the remote optical fiber data acquisition device 100 for reactive compensation further includes a self-checking circuit 110; the self-test circuit 110 is connected to the feedback circuit 109. It should be noted that, in this embodiment, the remote optical fiber data acquisition device 100 for reactive power compensation may further be provided with a phase-locked amplifier, so as to effectively separate out the required data signal. During operation, the voltage transformer 101 and the current transformer 102 correspondingly collect voltage and current signals and send the voltage and current signals to the analog-to-digital conversion circuit 103, the analog-to-digital conversion circuit 103 converts the received voltage and current analog signals into digital signals and sends the digital signals to the first photoelectric conversion circuit 104, the first photoelectric conversion circuit 104 converts the digital signals into optical signals through the photoelectric converter and sends the optical signals to the second photoelectric conversion circuit 106 through the transmission optical fiber 105, the second photoelectric conversion circuit 106 converts the received optical signals into electrical signals through the photoelectric converter and then outputs the electrical signals to the digital-to-analog conversion circuit 107, the digital-to-analog conversion circuit 107 sends the converted signals to the controller 108, and the controller 108 receives the required current and voltage values. The feedback circuit 109 and the self-test circuit 110 in this embodiment monitor all critical elements including the laser output power, the data connections, the reset circuit and possibly the synchronization circuit. The utility model discloses whole data acquisition device provides a complete electrical isolation's data transmission system, and the interference killing feature is strong. It should be noted that the utility model discloses not only can be applied to the current-voltage sampling in still can being applied to the high-voltage substation among the reactive power compensator.
The utility model provides a technical scheme carries out the transmission of energy and data based on optic fibre, and the interference killing feature is strong, compares with traditional low tension cable line transmission mode, does not receive distance, radio frequency interference, electromagnetic interference or high-pressure interference, and the transmission precision is high, can not arouse the controller malfunction, and low power dissipation suits outdoor application moreover.
It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (3)
1. A remote optical fiber data acquisition device for reactive compensation is characterized by comprising a voltage transformer, a current transformer, an analog-to-digital conversion circuit, a first photoelectric conversion circuit, a transmission optical fiber, a second photoelectric conversion circuit, a digital-to-analog conversion circuit and a controller; the voltage transformer is connected with a first input end of the analog-to-digital conversion circuit, the current transformer is connected with a second input end of the analog-to-digital conversion circuit, an output end of the analog-to-digital conversion circuit is connected with an input end of the first photoelectric conversion circuit, an output end of the first photoelectric conversion circuit is connected with one end of the transmission optical fiber, the other end of the transmission optical fiber is connected with an input end of the second photoelectric conversion circuit, an output end of the second photoelectric conversion circuit is connected with an input end of the digital-to-analog conversion circuit, and an output end of the digital-to-analog conversion circuit is connected with the controller.
2. The remote optical fiber data acquisition device for reactive power compensation according to claim 1, further comprising a feedback circuit; the feedback circuit is connected with the controller.
3. The remote optical fiber data acquisition device for reactive power compensation according to any one of claims 1 or 2, wherein the remote optical fiber data acquisition device for reactive power compensation further comprises a self-test circuit; the self-checking circuit is connected with the feedback circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370134.3U CN211627677U (en) | 2019-12-25 | 2019-12-25 | Remote optical fiber data acquisition device for reactive compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922370134.3U CN211627677U (en) | 2019-12-25 | 2019-12-25 | Remote optical fiber data acquisition device for reactive compensation |
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| Publication Number | Publication Date |
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| CN211627677U true CN211627677U (en) | 2020-10-02 |
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| CN201922370134.3U Active CN211627677U (en) | 2019-12-25 | 2019-12-25 | Remote optical fiber data acquisition device for reactive compensation |
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| CN (1) | CN211627677U (en) |
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- 2019-12-25 CN CN201922370134.3U patent/CN211627677U/en active Active
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