CN109856493A - A kind of detection device for transmission line of electricity - Google Patents
A kind of detection device for transmission line of electricity Download PDFInfo
- Publication number
- CN109856493A CN109856493A CN201811642584.7A CN201811642584A CN109856493A CN 109856493 A CN109856493 A CN 109856493A CN 201811642584 A CN201811642584 A CN 201811642584A CN 109856493 A CN109856493 A CN 109856493A
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- electricity
- transmission line
- signal
- detection device
- filter
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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
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The present invention relates to the security technology areas of transmission line of electricity, more particularly to a kind of detection device for transmission line of electricity.The detection device includes signal generator, power amplifier, filter, dual trace oscilloscope；The initial signal synchronous transfer that the signal generator generates is to the power amplifier and the dual trace oscilloscope, the power amplifier is output to access transmission line of electricity at transmission line of electricity CT drainage thread after amplifying initial signal, traveling wave is propagated in transmission line of electricity, transmission line of electricity generates back wave through being used as feedback signal transmission to the filter filtering at another transmission line of electricity CT drainage thread, feedback signal and initial signal are compared display by feedback signal transmission to the dual trace oscilloscope, the dual trace oscilloscope by the filter.Effectively the operating condition of transmission line of electricity can be judged using the device, be not necessarily to staff, transmission line of electricity is directly intuitively presented using data, and whether there is a phenomenon where open circuit or ground connection.
Description
Technical field
The present invention relates to the security technology areas of transmission line of electricity, fill more particularly to a kind of detection for transmission line of electricity
It sets.
Background technique
Ultra-high-tension power transmission line is placed in field, requires to be overhauled every year, the work in every such as repairing, staff's power failure work
It then needs to remove, then report as value dispatcher again after then working in each side installation temporary ground wire of route when making,
Then often there is work because various reason has staff to leak dismounting ground line or route and notify to adjust not in time
Degree leads to route line with ground and the pernicious maloperation event closed a floodgate.Meanwhile after tripping unsuccessful reclosing occurs for route, adjust
Degree personnel can send by force once according to dispatching rule, if meeting high-tension line broken string or high-tension line generation grounding phenomenon,
It can be there is a situation where tripping again, huge dash current can carry out impact damage to whole route and station end equipment, or even draw
The malfunction or leapfrog movement for playing protection, to expand accident range.
Summary of the invention
The present invention provides a kind of detection device for transmission line of electricity, utilizes to solve above-mentioned technological deficiency
The device can effectively judge the operating condition of transmission line of electricity, be not necessarily to staff, directly intuitively presented using data
Whether there is a phenomenon where open circuit or ground connection for transmission line of electricity.
The technical scheme is that；A kind of detection device for transmission line of electricity, the detection device include signal
Device, power amplifier, filter, dual trace oscilloscope；
The initial signal synchronous transfer that the signal generator generates is described to the power amplifier and the dual trace oscilloscope
Power amplifier is output to access transmission line of electricity, traveling wave at transmission line of electricity CT drainage thread and is transmitting electricity after amplifying initial signal
It is propagated in route, transmission line of electricity generates back wave through being used as feedback signal transmission described at another transmission line of electricity CT drainage thread
Filter filtering, the filter is by feedback signal transmission to the dual trace oscilloscope, and the dual trace oscilloscope is by feedback signal
Display is compared with initial signal.
An initial signal is exported using signal generator to propagate to the enterprising every trade wave of transmission line of electricity, obtains feedback signal,
Feedback signal is compared distortion whether occurs to judge not having such as on transmission line of electricity with the presence or absence of grounding phenomenon with initial signal
Feedback signal is received, then breaking phenomena occurs for transmission line of electricity.It effectively can quickly and easily be realized using the device to transmission of electricity
The judgement of the operation conditions of route judges whether route has the phenomenon of ground connection or open circuit without operator scene, can effectively mention
High efficiency and guarantee transmission of electricity safety.
It is not distorted, sentences if received feedback signal is compared with initial signal on the fluorescent screen of dual trace oscilloscope
Break no ground phenomenon or broken string phenomenon in this section of transmission line of electricity；If dual trace oscilloscope fails to receive feedback signal, the section
Transmission line of electricity has broken string；It is distorted if the feedback signal that dual trace oscilloscope receives is compared with initial signal, section transmission of electricity
Route has grounding phenomenon.
Further, filter uses high-pass filter.In the power system, certain is filtered out with high-pass filter when harmonic compensation
Secondary and its above each harmonic eliminates unnecessary low-frequency component in signal and eliminates low-frequency disturbance in other words.
Further, signal generator is Wen Shiqiaoshi oscillating circuit, and triggering generates a high_frequency sine wave signal.
Further, which is powered using 24V voltage.
The beneficial effects of the invention are as follows；
1. can replace dispatcher using the device judges whether route has grounding phenomenon dependent on Field Force, shown with double tracks
The signal contrast shown on wave device intuitively reflects the operating condition of this section of ultra-high-tension power transmission line.
2. greatly improving power supply reliability, reduce the generation of pernicious maloperation event.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The attached figures are only used for illustrative purposes and cannot be understood as limitating the patent；In order to better illustrate this embodiment, attached
Scheme certain components to have omission, zoom in or out, does not represent the size of actual product；To those skilled in the art,
The omitting of some known structures and their instructions in the attached drawings are understandable.Being given for example only property of positional relationship is described in attached drawing
Illustrate, should not be understood as the limitation to this patent.
Embodiment 1:
As shown in Figure 1, a kind of detection device for transmission line of electricity, the detection device include signal generator, power amplifier,
Filter, dual trace oscilloscope；
The initial signal synchronous transfer that the signal generator generates is described to the power amplifier and the dual trace oscilloscope
Power amplifier is output to access transmission line of electricity, traveling wave at transmission line of electricity CT drainage thread and is transmitting electricity after amplifying initial signal
It is propagated in route, transmission line of electricity generates back wave through being used as feedback signal transmission described at another transmission line of electricity CT drainage thread
Filter filtering, the filter is by feedback signal transmission to the dual trace oscilloscope, and the dual trace oscilloscope is by feedback signal
Display is compared with initial signal.
An initial signal is exported using signal generator to propagate to the enterprising every trade wave of transmission line of electricity, obtains feedback signal,
Feedback signal is compared distortion whether occurs to judge not having such as on transmission line of electricity with the presence or absence of grounding phenomenon with initial signal
Feedback signal is received, then breaking phenomena occurs for transmission line of electricity.It effectively can quickly and easily be realized using the device to transmission of electricity
The judgement of the operation conditions of route judges whether route has the phenomenon of ground connection or open circuit without operator scene, can effectively mention
High efficiency and guarantee transmission of electricity safety.
The judgment principle of the device is: if feedback signal and initial signal received on the fluorescent screen of dual trace oscilloscope
Compared to not being distorted, then no ground phenomenon or broken string phenomenon in this section of transmission line of electricity are judged；If dual trace oscilloscope fails to connect
Feedback signal is received, then this section of transmission line of electricity has broken string；If the feedback signal that dual trace oscilloscope receives is compared with initial signal
It is distorted, then this section of transmission line of electricity has grounding phenomenon.
In the present embodiment, filter uses high-pass filter.In the power system, high-pass filter when harmonic compensation
Certain and its above each harmonic are filtered out, unnecessary low-frequency component in signal is eliminated and eliminates low-frequency disturbance in other words.
In the present embodiment, signal generator is Wen Shiqiaoshi oscillating circuit, and triggering generates a high_frequency sine wave signal.
In the present embodiment, which is powered using 24V voltage.
In actual application, above-mentioned signal generator, power amplifier, high-pass filter can be integrated in an electricity
Power cabinet, is powered using electric power cabinet, and is attached by conducting wire and external dual trace oscilloscope, while logical from the electric power cabinet
It crosses cable to be attached at the CT drainage thread at the transmission line of electricity both ends detected respectively, to judge this section of power transmission line
Whether road occurs phenomena such as open circuit, ground connection.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (4)
1. a kind of detection device for transmission line of electricity, which is characterized in that the detection device includes signal generator, power amplification
Device, filter, dual trace oscilloscope；
The initial signal synchronous transfer that the signal generator generates is described to the power amplifier and the dual trace oscilloscope
Power amplifier is output to access transmission line of electricity, traveling wave at transmission line of electricity CT drainage thread and is transmitting electricity after amplifying initial signal
It is propagated in route, transmission line of electricity generates back wave through being used as feedback signal transmission described at another transmission line of electricity CT drainage thread
Filter filtering, the filter is by feedback signal transmission to the dual trace oscilloscope, and the dual trace oscilloscope is by feedback signal
Display is compared with initial signal.
2. a kind of detection device for transmission line of electricity according to claim 1, which is characterized in that the filter is adopted
Use high-pass filter.
3. a kind of detection device for transmission line of electricity according to claim 1, which is characterized in that the signal generator
For Wen Shiqiaoshi oscillating circuit, triggering generates a high_frequency sine wave signal.
4. a kind of detection device for transmission line of electricity according to claim 1, which is characterized in that the detection device uses
24V voltage is powered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642584.7A CN109856493A (en) | 2018-12-29 | 2018-12-29 | A kind of detection device for transmission line of electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642584.7A CN109856493A (en) | 2018-12-29 | 2018-12-29 | A kind of detection device for transmission line of electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109856493A true CN109856493A (en) | 2019-06-07 |
Family
ID=66893359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811642584.7A Pending CN109856493A (en) | 2018-12-29 | 2018-12-29 | A kind of detection device for transmission line of electricity |
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| Country | Link |
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| CN (1) | CN109856493A (en) |
Citations (8)
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|---|---|---|---|---|
| CN2433635Y (en) * | 1999-10-26 | 2001-06-06 | 南航(集团)汕头航空有限公司 | Testing instrument for fault of conducting wire |
| CN102680855A (en) * | 2012-05-15 | 2012-09-19 | 东南大学 | Cable fault detecting and positioning method based on waveform replication |
| CN202442724U (en) * | 2011-11-14 | 2012-09-19 | Abb技术有限公司 | Diagnostic device of piezoelectric sensor system |
| CN103983884A (en) * | 2014-04-28 | 2014-08-13 | 北京世纪东方国铁科技股份有限公司 | Multi-core cable testing system and method |
| CN204241597U (en) * | 2014-12-10 | 2015-04-01 | 北方联创通信有限公司 | Portable cable fast detector |
| CN106569080A (en) * | 2016-10-27 | 2017-04-19 | 国家电网公司 | Transformer inter-turn short circuit fault positioning method based on low-voltage pulse signals |
| CN108535605A (en) * | 2018-04-18 | 2018-09-14 | 南京南瑞继保电气有限公司 | A kind of impulse waveform comparative approach for the monitoring of direct current grounding pole line fault |
| CN209560011U (en) * | 2018-12-29 | 2019-10-29 | 广东电网有限责任公司 | A kind of detection device for transmission line of electricity |
-
2018
- 2018-12-29 CN CN201811642584.7A patent/CN109856493A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2433635Y (en) * | 1999-10-26 | 2001-06-06 | 南航(集团)汕头航空有限公司 | Testing instrument for fault of conducting wire |
| CN202442724U (en) * | 2011-11-14 | 2012-09-19 | Abb技术有限公司 | Diagnostic device of piezoelectric sensor system |
| CN102680855A (en) * | 2012-05-15 | 2012-09-19 | 东南大学 | Cable fault detecting and positioning method based on waveform replication |
| CN103983884A (en) * | 2014-04-28 | 2014-08-13 | 北京世纪东方国铁科技股份有限公司 | Multi-core cable testing system and method |
| CN204241597U (en) * | 2014-12-10 | 2015-04-01 | 北方联创通信有限公司 | Portable cable fast detector |
| CN106569080A (en) * | 2016-10-27 | 2017-04-19 | 国家电网公司 | Transformer inter-turn short circuit fault positioning method based on low-voltage pulse signals |
| CN108535605A (en) * | 2018-04-18 | 2018-09-14 | 南京南瑞继保电气有限公司 | A kind of impulse waveform comparative approach for the monitoring of direct current grounding pole line fault |
| CN209560011U (en) * | 2018-12-29 | 2019-10-29 | 广东电网有限责任公司 | A kind of detection device for transmission line of electricity |
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