CN210534258U - Fault positioning self-checking circuit for overhead-cable hybrid line - Google Patents
Fault positioning self-checking circuit for overhead-cable hybrid line Download PDFInfo
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- CN210534258U CN210534258U CN201920550120.7U CN201920550120U CN210534258U CN 210534258 U CN210534258 U CN 210534258U CN 201920550120 U CN201920550120 U CN 201920550120U CN 210534258 U CN210534258 U CN 210534258U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Abstract
The utility model provides an it is built on stilts-cable hybrid line fault location self-checking circuit belongs to power failure location technical field. The fault location self-checking circuit for the overhead-cable hybrid line comprises an ARM processor, a subtraction circuit, a sampling circuit and an analog control switch, wherein an IO interface and a pulse width modulation port are arranged on the ARM processor, the output end of the IO interface is connected with the analog control switch, the output end of the pulse width modulation port is connected with the input end of the subtraction circuit, the output end of the subtraction circuit is connected with the sampling circuit through the analog control switch, and the output end of the sampling circuit is connected with the ARM processor. The overhead-cable hybrid line fault location self-checking circuit is reasonable in design and simple and convenient to use, and can monitor whether equipment works normally on a high-voltage transmission line.
Description
Technical Field
The utility model relates to a power failure fixes a position technical field, concretely relates to built on stilts-cable hybrid line fault location self-checking circuit.
Background
Many times overhead transmission lines are distributed in mountains and rivers with rare smoke and other places with severe natural environments. The fault location device for the overhead-cable hybrid line is mostly arranged on an overhead transmission line and is inconvenient for field maintenance and detection, so that a fault location self-checking circuit for the overhead-cable hybrid line needs to be designed for monitoring whether equipment works normally or not.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model provides an it is built on stilts-cable hybrid line fault location self-checking circuit solves the technical problem that the aforesaid exists.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the utility model provides an overhead-cable hybrid line fault location self-checking circuit, includes ARM treater, subtraction circuit, sampling circuit and analog control switch, be provided with IO interface and pulse width modulation port on the ARM treater, the output of IO interface with analog control switch connects, the output of pulse width modulation port with subtraction circuit's input is connected, subtraction circuit's output passes through analog control switch with sampling circuit connects, sampling circuit's output with the ARM treater is connected.
Further, the signal output by the output end of the pulse width modulation port is a square wave signal.
Further, the amplitude of the square wave signal is 0-3.3V.
Further, the signal received by the sampling circuit is-1.65 to + 1.65V.
Further, the model of the analog control switch is TS3A 4751.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model provides an it is built on stilts-cable hybrid line fault location self-checking circuit has set up through the ARM treater and has produced a fixed square waveform through whole self-checking circuit after, if received data is unanimous with the former wave form of setting for, then the self-checking is successful, otherwise the self-checking is unsuccessful, this self-checking circuit reasonable in design, and it is simple and convenient to use, can be on high tension transmission line monitoring facilities whether normal work.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
FIG. 1: the utility model discloses a self-checking circuit block diagram.
Detailed Description
For a better understanding of the present invention, the contents of the present invention will be further clarified below by referring to examples, but the present invention is not limited to the following examples. In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details.
Examples
As shown in fig. 1, an overhead-cable hybrid line fault location self-checking circuit includes an ARM processor, a subtraction circuit, a sampling circuit, and an analog control switch, wherein: ARM treater be provided with IO interface 1 and pulse width modulation port 3 (PWM port for short) on the ARM treater, the output of IO interface with analog control switch 2 is connected, analog control switch 2's model is TS3A4751, analog control switch is controlled through IO interface 1 of ARM treater. In a normal state, the analog control switch 2 is in an open state, and is closed only when self-checking is to be performed, so that the self-checking circuit is prevented from influencing normal traveling wave signals during normal sampling.
The output end of the PWM port 3 is connected with the input end of the subtraction circuit, the PWM port 3 can generate a square wave signal with a certain frequency, and the amplitude of the square wave signal is 0-3.3V. The amplitude of the square wave signal is subtracted through the subtraction circuit, and the amplitude of the traveling wave or the power frequency of the overhead-cable mixed line fault positioning device is positive or negative, so that 1.65V is subtracted after the overhead-cable mixed line fault positioning device passes through the subtraction circuit, and the signal amplitude is changed to be-1.65 to + 1.65V. The output end of the subtraction circuit is connected with the sampling circuit through the analog control switch, and the output end of the sampling circuit is connected with the ARM processor.
The working principle of the whole device is as follows:
after the PWM port 3 of the ARM processor generates a square wave signal with a certain frequency and passes through the whole self-checking circuit, the ARM processor compares the data signal obtained by self-checking with the square wave signal sent by the PWM port to judge whether the data signal is consistent or not, so that whether the equipment works normally or not is judged.
Finally, the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and other modifications or equivalent replacements made by the technical solutions of the present invention by those of ordinary skill in the art should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The utility model provides an aerial-cable hybrid line fault location self-checking circuit which characterized in that: the pulse width modulation circuit comprises an ARM processor, a subtraction circuit, a sampling circuit and an analog control switch, wherein an IO interface and a pulse width modulation port are arranged on the ARM processor, the output end of the IO interface is connected with the analog control switch, the output end of the pulse width modulation port is connected with the input end of the subtraction circuit, the output end of the subtraction circuit is connected with the sampling circuit through the analog control switch, the output end of the sampling circuit is connected with the ARM processor, a signal output by the output end of the pulse width modulation port is a square wave signal, the amplitude of the square wave signal is 0-3.3V, a signal received by the sampling circuit is-1.65 to +1.65V, and the model of the analog control switch is TS3A 4751.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550120.7U CN210534258U (en) | 2019-04-22 | 2019-04-22 | Fault positioning self-checking circuit for overhead-cable hybrid line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920550120.7U CN210534258U (en) | 2019-04-22 | 2019-04-22 | Fault positioning self-checking circuit for overhead-cable hybrid line |
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| Publication Number | Publication Date |
|---|---|
| CN210534258U true CN210534258U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920550120.7U Active CN210534258U (en) | 2019-04-22 | 2019-04-22 | Fault positioning self-checking circuit for overhead-cable hybrid line |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290910A (en) * | 2020-10-20 | 2021-01-29 | 云南电网有限责任公司临沧供电局 | Voltage-multiplying triangular pulse source circuit for positioning injection fault of distribution transformer low-voltage side pulse |
| CN115372749A (en) * | 2022-10-25 | 2022-11-22 | 高勘(广州)技术有限公司 | Monitoring method, system, equipment and storage medium of power transmission line |
-
2019
- 2019-04-22 CN CN201920550120.7U patent/CN210534258U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112290910A (en) * | 2020-10-20 | 2021-01-29 | 云南电网有限责任公司临沧供电局 | Voltage-multiplying triangular pulse source circuit for positioning injection fault of distribution transformer low-voltage side pulse |
| CN115372749A (en) * | 2022-10-25 | 2022-11-22 | 高勘(广州)技术有限公司 | Monitoring method, system, equipment and storage medium of power transmission line |
| CN115372749B (en) * | 2022-10-25 | 2023-01-06 | 高勘(广州)技术有限公司 | Monitoring method, system, equipment and storage medium of power transmission line |
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