CN213457194U - Distributed transmission line fault distance measuring device - Google Patents
Distributed transmission line fault distance measuring device Download PDFInfo
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- CN213457194U CN213457194U CN202022613698.8U CN202022613698U CN213457194U CN 213457194 U CN213457194 U CN 213457194U CN 202022613698 U CN202022613698 U CN 202022613698U CN 213457194 U CN213457194 U CN 213457194U
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Abstract
The utility model discloses a distributed transmission line fault distance measuring device, which comprises fault monitoring equipment and background fault diagnosis equipment, wherein the fault monitoring equipment is arranged on a transmission line and is connected with the background fault diagnosis equipment for monitoring the running condition of the transmission line in real time, and when the transmission line has a potential fault, the potential fault information on the transmission line is collected in real time and is transmitted to the background fault diagnosis equipment; the background fault diagnosis equipment is in wireless connection with the fault monitoring equipment and is used for receiving the potential fault information transmitted by the fault monitoring equipment and performing fault positioning, fault type identification and potential fault early warning on the power transmission line. The utility model provides a distributed transmission line fault location device, can conveniently and accurately confirm the transmission line fault point position, get rid of the electric line operation trouble in time; the positioning precision is high, and the diagnosis timeliness is good; convenient to use, greatly improve work efficiency.
Description
Technical Field
The utility model relates to an electric power detection field especially discloses a distributing type transmission line trouble range unit.
Background
The transmission line is an important component of the power system, is a foundation stone of the whole system and is responsible for transmitting electric energy. As a country with large energy consumption, China generally presents the current situation of more east west and less south in energy distribution, but the electricity load center of China is mainly concentrated in a part of the southeast coastal region. In order to meet the power demand of a power load center in southeast regions, how to transport surplus power resources in the north and the west is to this point, and therefore a large number of long-distance ultra-long-distance high-voltage ultra-high-voltage transmission lines are produced at the same time. How to ensure the normal operation of the transmission lines and how to eliminate faults in time becomes the first consideration difficulty of the power system.
Therefore, how to conveniently determine the position of the fault point of the power transmission line is a technical problem to be solved urgently.
SUMMERY OF THE UTILITY MODEL
The utility model provides a distributing type transmission line trouble range unit aims at conveniently confirming transmission line fault point position, in time gets rid of the electric line operation trouble.
The utility model provides a distributed transmission line fault distance measuring device, which comprises fault monitoring equipment and background fault diagnosis equipment, wherein,
the fault monitoring equipment is arranged on the power transmission line, is connected with the background fault diagnosis equipment and is used for monitoring the running condition of the power transmission line in real time, acquiring the potential fault information on the power transmission line in real time when the power transmission line has the potential fault, and transmitting the acquired potential fault information to the background fault diagnosis equipment;
the background fault diagnosis equipment is in wireless connection with the fault monitoring equipment and is used for receiving the potential fault information transmitted by the fault monitoring equipment and performing fault positioning, fault type identification and potential fault early warning on the power transmission line.
Furthermore, the fault monitoring equipment comprises a traveling wave acquisition module and a conditioning circuit,
the traveling wave acquisition module is used for acquiring traveling wave current voltage signals of the power transmission line;
and the conditioning circuit is connected with the traveling wave acquisition module and is used for conditioning the traveling wave current voltage signals acquired by the traveling wave acquisition module.
Furthermore, the traveling wave acquisition module comprises an integrating circuit and a signal sampling circuit, the conditioning circuit comprises a multi-channel data selection switch and an analog-to-digital converter,
the integrating circuit is used for acquiring the traveling wave current voltage of the power transmission line;
the signal sampling circuit is respectively electrically connected with the integrating circuit and the multi-channel data selection switch and is used for dividing the traveling wave current voltage acquired by the integrating circuit into a plurality of different signals and correspondingly transmitting the signals to each channel of the multi-channel data selection switch;
the analog-to-digital converter is connected with the multichannel data selection switch and used for performing analog-to-digital conversion on signals output by each channel of the multichannel data selection switch and outputting travelling wave current voltage digital signals.
Further, the integrating circuit comprises a Rogowski coil and an integrator,
the Rogowski coil is used for inducing electromotive force on the power transmission line;
the integrator is electrically connected with the Rogowski coil and is used for performing integral operation on the electromotive force induced by the Rogowski coil and outputting traveling wave current voltage.
Further, the analog-to-digital converter comprises an analog-to-digital acquisition chip, and the model of the analog-to-digital acquisition chip is AD 7352.
Further, the model number of the multi-channel data selection switch is 74HC 4051.
Furthermore, the fault monitoring device comprises a power frequency wave recording circuit, a control unit and a storage module,
the power frequency wave recording circuit is used for monitoring power frequency voltage and power frequency current of the power transmission line, carrying out wave recording starting judgment on the monitored power frequency voltage and power frequency current and generating a power frequency wave recording file and a high frequency wave recording file;
the control unit is respectively connected with the power frequency wave recording circuit and the storage module and is used for controlling the storage module to store a power frequency wave recording file and a high-frequency wave recording file generated by the power frequency wave recording circuit.
Further, the control unit comprises a field programmable gate array, which is an EP3C10 chip manufactured by ALTERA corporation.
Further, the background fault diagnosis device comprises a wireless communication module, a control module and an alarm module,
the wireless communication module is wirelessly connected with the fault monitoring equipment and is used for receiving potential fault information transmitted by the fault monitoring equipment;
the control module is respectively electrically connected with the wireless communication module and the alarm module and is used for processing the potential fault information received by the wireless communication module and controlling the alarm module to give an alarm.
Further, the control module comprises a single chip microcomputer, and the model of the single chip microcomputer is MCS-51.
The utility model discloses the beneficial effect who gains does:
the utility model provides a distributed transmission line fault location device adopts trouble monitoring equipment and backstage fault diagnosis equipment, through installing trouble monitoring equipment on the transmission line, monitors the operational aspect of transmission line in real time, when there is latent trouble in the transmission line, gathers the latent trouble information on the transmission line in real time, and transmits the latent trouble information gathered to backstage fault diagnosis equipment; and the background fault diagnosis equipment receives the latent fault information transmitted by the fault monitoring equipment and performs fault positioning, fault type identification and latent fault early warning of the power transmission line. The utility model provides a distributed transmission line fault location device, can conveniently and accurately confirm the transmission line fault point position, get rid of the electric line operation trouble in time; the positioning precision is high, and the diagnosis timeliness is good; convenient to use, greatly improve work efficiency.
Drawings
Fig. 1 is a functional block diagram of an embodiment of a distributed power transmission line fault location apparatus provided by the present invention;
FIG. 2 is a functional block diagram of a first embodiment of the fault monitoring device shown in FIG. 1;
FIG. 3 is a schematic diagram of the connection of the traveling wave collection module and the conditioning circuit shown in FIG. 2;
FIG. 4 is a functional block diagram of an embodiment of the integration circuit shown in FIG. 3;
FIG. 5 is a functional block diagram of a second embodiment of the fault monitoring device shown in FIG. 4;
fig. 6 is a functional block diagram of an embodiment of the background fault diagnosis apparatus shown in fig. 1.
The reference numbers illustrate:
10. a fault monitoring device; 20. a background fault diagnostic device; 11. a traveling wave acquisition module; 12. a conditioning circuit; 111. an integrating circuit; 112. a signal sampling circuit; 121. a multi-channel data selection switch; 122. an analog-to-digital converter; 1111. a Rogowski coil; 1112. an integrator; 13. a power frequency wave recording circuit; 14. a control unit; 15. a storage module; 21. a wireless communication module; 22. a control module; 23. and an alarm module.
Detailed Description
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1, the first embodiment of the present invention provides a distributed power transmission line fault location device, which includes a fault monitoring device 10 and a background fault diagnosis device 20, wherein the fault monitoring device 10 is installed on a power transmission line, and is connected to the background fault diagnosis device 20, so as to monitor the operation condition of the power transmission line in real time, and when there is a potential fault in the power transmission line, collect the potential fault information on the power transmission line in real time, and transmit the collected potential fault information to the background fault diagnosis device 20; the background fault diagnosis device 20 is wirelessly connected to the fault monitoring device 10, and is configured to receive the latent fault information transmitted by the fault monitoring device 10, and perform fault location, fault type identification, and latent fault early warning on the power transmission line.
In the above structure, please refer to fig. 2 to 4, and fig. 2 is a functional module schematic diagram of a first embodiment of the fault monitoring device shown in fig. 1, in this embodiment, the fault monitoring device 10 includes a traveling wave acquisition module 11 and a conditioning circuit 12, where the traveling wave acquisition module 11 is configured to acquire a traveling wave current-voltage signal of the power transmission line; the conditioning circuit 12 is connected to the traveling wave acquisition module 11, and is configured to condition the traveling wave current-voltage signal acquired by the traveling wave acquisition module 11. Specifically, the traveling wave acquisition module 11 includes an integrating circuit 111 and a signal sampling circuit 112, the conditioning circuit 12 includes a multi-channel data selection switch 121 and an analog-to-digital converter 122, and the integrating circuit 111 is configured to acquire a traveling wave current voltage of the power transmission line; the signal sampling circuit 112 is electrically connected to the integrating circuit 111 and the multi-channel data selection switch 121, and is configured to divide the traveling wave current and voltage collected by the integrating circuit 111 into multiple different signals and correspondingly transmit the signals to each channel of the multi-channel data selection switch 121; the analog-to-digital converter 122 is connected to the multi-channel data selection switch 121, and is configured to perform analog-to-digital conversion on signals output in each channel of the multi-channel data selection switch 121, and output a traveling wave current voltage digital signal. The integrating circuit 111 comprises a rogowski coil 1111 and an integrator 1112, wherein the rogowski coil 1111 is used for inducing electromotive force on a power transmission line; the integrator 1112 is electrically connected to the rogowski coil 1111 and configured to perform an integration operation on the electromotive force induced by the rogowski coil 1111 to output a traveling wave current voltage. In this embodiment, the analog-to-digital converter 122 includes an analog-to-digital acquisition chip, and the model of the analog-to-digital acquisition chip is AD 7352. The model number of the multichannel data selection switch 121 is 74HC 4051.
Preferably, please refer to fig. 5, where fig. 5 is a schematic functional module diagram of a second embodiment of the fault monitoring apparatus shown in fig. 4, and on the basis of the first embodiment, the fault monitoring apparatus 10 further includes a power frequency wave recording circuit 13, a control unit 14, and a storage module 15, where the power frequency wave recording circuit 13 is configured to monitor a power frequency voltage and a power frequency current of the power transmission line, and perform wave recording start judgment on the monitored power frequency voltage and power frequency current to generate a power frequency wave recording file and a high frequency wave recording file; the control unit 14 is connected to the power frequency recording circuit 13 and the storage module 15, and is configured to control the storage module 15 to store a power frequency recording file and a high frequency recording file generated by the power frequency recording circuit 13. The control unit 14 includes an FPGA (Field-Programmable Gate Array), and in this embodiment, the FPGA controls the storage module 15 to store the power frequency recording file and the high frequency recording file generated by the power frequency recording circuit 13. The FPGA adopts an EP3C10 chip produced by ALTERA company.
Further, referring to fig. 6, fig. 6 is a functional module schematic diagram of an embodiment of the background fault diagnosis device shown in fig. 1, in this embodiment, the background fault diagnosis device 20 includes a wireless communication module 21, a control module 22 and an alarm module 23, where the wireless communication module 21 is wirelessly connected to the fault monitoring device 10 and configured to receive potential fault information transmitted by the fault monitoring device 10; the control module 22 is electrically connected to the wireless communication module 21 and the alarm module 23, and is configured to process the potential fault information received by the wireless communication module 21 and control the alarm module 23 to alarm. In the distributed power transmission line fault distance measuring device provided by this embodiment, the control module 22 includes a single chip, and the type of the single chip is MCS-51. The wireless communication module 21 may be a wifi module, a bluetooth module, a GPRS module, a CDMA module, a 3G module, a 4G module, or a 5G module, and is within the protection scope of the present patent.
The distributed power transmission line fault distance measuring device provided by the embodiment has the following beneficial effects:
1. and the Rogowski coil and the integrator are independently designed and developed, and a matched integrating circuit meeting the application requirement is independently designed.
2. And a Rogowski coil-based hardware traveling wave acquisition and conditioning circuit is developed to realize acquisition and time service of the hardware traveling wave.
3. The power frequency wave recording adopts high and low wave recording channels to solve the technical problems of large measurement error of small current and waveform distortion. And a high-frequency wave recording starting mode adopts a hardware traveling wave starting mode and a software starting mode with adjustable threshold value so as to enhance the reliability and flexibility of high-frequency wave recording.
4. The FPGA realizes high-frequency wave recording control, the wave recording file stores the FPGA control, and a ring storage mode is adopted to realize continuous wave recording.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A distributed transmission line fault distance measuring device is characterized by comprising fault monitoring equipment (10) and background fault diagnosis equipment (20),
the fault monitoring equipment (10) is arranged on the power transmission line, is connected with the background fault diagnosis equipment (20), and is used for monitoring the operation condition of the power transmission line in real time, acquiring potential fault information on the power transmission line in real time when the power transmission line has a potential fault, and transmitting the acquired potential fault information to the background fault diagnosis equipment (20);
the background fault diagnosis device (20) is in wireless connection with the fault monitoring device (10) and is used for receiving potential fault information transmitted by the fault monitoring device (10) and making fault location, fault type identification and potential fault early warning of the power transmission line.
2. The distributed transmission line fault ranging apparatus of claim 1,
the fault monitoring equipment (10) comprises a traveling wave acquisition module (11) and a conditioning circuit (12),
the traveling wave acquisition module (11) is used for acquiring traveling wave current voltage signals of the power transmission line;
and the conditioning circuit (12) is connected with the traveling wave acquisition module (11) and is used for conditioning the traveling wave current voltage signals acquired by the traveling wave acquisition module (11).
3. The distributed transmission line fault ranging apparatus of claim 2,
the traveling wave acquisition module (11) comprises an integrating circuit (111) and a signal sampling circuit (112), the conditioning circuit (12) comprises a multi-channel data selection switch (121) and an analog-to-digital converter (122),
the integral circuit (111) is used for collecting traveling wave current voltage of the power transmission line;
the signal sampling circuit (112) is respectively electrically connected with the integrating circuit (111) and the multi-channel data selection switch (121), and is used for dividing the traveling wave current and voltage acquired by the integrating circuit (111) into a plurality of different signals and correspondingly transmitting the signals to each channel of the multi-channel data selection switch (121);
the analog-to-digital converter (122) is connected with the multichannel data selection switch (121) and is used for performing analog-to-digital conversion on signals output by each channel of the multichannel data selection switch (121) and outputting travelling wave current voltage digital signals.
4. The distributed transmission line fault ranging apparatus of claim 3,
the integrating circuit (111) comprises a Rogowski coil (1111) and an integrator (1112),
the Rogowski coil (1111) is used for inducing electromotive force on a power transmission line;
the integrator (1112) is electrically connected with the Rogowski coil (1111) and is used for performing integration operation on the electromotive force induced by the Rogowski coil (1111) and outputting traveling wave current voltage.
5. The distributed transmission line fault ranging apparatus of claim 4,
the analog-to-digital converter (122) comprises an analog-to-digital acquisition chip, and the model of the analog-to-digital acquisition chip is AD 7352.
6. The distributed transmission line fault ranging apparatus of claim 4,
the model of the multichannel data selection switch (121) is 74HC 4051.
7. The distributed transmission line fault ranging apparatus of claim 1,
the fault monitoring device (10) comprises a power frequency wave recording circuit (13), a control unit (14) and a storage module (15),
the power frequency wave recording circuit (13) is used for monitoring power frequency voltage and power frequency current of the power transmission line, carrying out wave recording starting judgment on the monitored power frequency voltage and power frequency current and generating a power frequency wave recording file and a high frequency wave recording file;
the control unit (14) is respectively connected with the power frequency wave recording circuit (13) and the storage module (15) and is used for controlling the storage module (15) to store a power frequency wave recording file and a high-frequency wave recording file generated by the power frequency wave recording circuit (13).
8. The distributed transmission line fault ranging apparatus of claim 7,
the control unit (14) comprises a field programmable gate array, which is an EP3C10 chip manufactured by ALTERA.
9. The distributed transmission line fault ranging apparatus of claim 1,
the background fault diagnosis device (20) comprises a wireless communication module (21), a control module (22) and an alarm module (23),
the wireless communication module (21) is wirelessly connected with the fault monitoring equipment (10) and is used for receiving potential fault information transmitted by the fault monitoring equipment (10);
the control module (22) is respectively electrically connected with the wireless communication module (21) and the alarm module (23) and is used for processing the potential fault information received by the wireless communication module (21) and controlling the alarm module (23) to alarm.
10. The distributed transmission line fault ranging apparatus of claim 9,
the control module (22) comprises a single chip microcomputer, and the type of the single chip microcomputer is MCS-51.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022613698.8U CN213457194U (en) | 2020-11-12 | 2020-11-12 | Distributed transmission line fault distance measuring device |
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| CN202022613698.8U CN213457194U (en) | 2020-11-12 | 2020-11-12 | Distributed transmission line fault distance measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406436A (en) * | 2021-06-17 | 2021-09-17 | 山东大学 | Traveling wave fault location method and system for alternating-current and direct-current transmission line based on 5G communication |
| CN116400173A (en) * | 2023-06-06 | 2023-07-07 | 中国南方电网有限责任公司超高压输电公司广州局 | Fault identification method for power transmission line |
-
2020
- 2020-11-12 CN CN202022613698.8U patent/CN213457194U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113406436A (en) * | 2021-06-17 | 2021-09-17 | 山东大学 | Traveling wave fault location method and system for alternating-current and direct-current transmission line based on 5G communication |
| CN116400173A (en) * | 2023-06-06 | 2023-07-07 | 中国南方电网有限责任公司超高压输电公司广州局 | Fault identification method for power transmission line |
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