CN102081130A - Electrified cable detection method, device and system - Google Patents
Electrified cable detection method, device and system Download PDFInfo
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- CN102081130A CN102081130A CN2009102501579A CN200910250157A CN102081130A CN 102081130 A CN102081130 A CN 102081130A CN 2009102501579 A CN2009102501579 A CN 2009102501579A CN 200910250157 A CN200910250157 A CN 200910250157A CN 102081130 A CN102081130 A CN 102081130A
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- energising cable
- cable
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- signal
- energising
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Abstract
The invention discloses an electrified cable detection method, an electrified cable detection device and an electrified cable detection system. The electrified cable detection method comprises the following steps of: A, detecting the existing harmonic voltage of the electrified cable at the upper end of the electrified cable; B, generating excitation signals according to the acquired harmonic signals of the current in the electrified cable; C, converting the excitation signals into an induction voltage and loading the induction voltage at the upper en of the electrified cable; and D, distinguishing the electrified cable and other electrified cables according to the existing harmonic voltage of the electrified cable, the induction voltage and the harmonic voltage detected at the lower end of the electrified cable. The induction voltage is loaded on the electrified cable to change the harmonic component on the electrified cable and distinguish the upper and lower terminals of the electrified cable, so manual model arrangement is not needed, and manpower cost is saved; a power supply does not need to be cut off for measurement, so normal service operation of equipment is not affected; and the upper and lower terminals of the electrified cable can be accurately distinguished from a large amount of cables.
Description
Technical field
The present invention relates to a kind of communication power supply technology, relate in particular to a kind of energising cable detection method, Apparatus and system.
Background technology
In daily production maintenance work and the engineering cutover, usually meet, cause certain root energising cable upper and lower side to confirm because of serial reasons such as cable identification come off.The method of confirming energising cable upper and lower side in the prior art mainly contains: outage mensuration, cable current mensuration and the method for manually sounding out the people in a given scope one by one in order to break a criminal case.
The outage mensuration is with the last end switch disconnection of cable, sees if there is voltage in the lower end of cable with the ammeter measurement.The outage mensuration can have influence on carrying out of some business, does not particularly allow the important network element that cuts off the power supply for some, and the method brings great inconvenience for the production maintenance work.
The cable current mensuration is that each surveys once this cable load current at the upper and lower side of cable, in that to carry out numeric ratio right, determines whether to be same cable then.This kind method can't adapt to through the cable identical, that load current is suitable for line; Owing to the cable loss, same cable upper and lower side electric current is also inequality simultaneously, and the science that can't realize accurately compares; Secondly owing to the uncertainty of electricity consumption load current, further increased the scientific and precise of this kind comparative approach.
The rule of manually sounding out the people in a given scope one by one in order to break a criminal case needs the technician by the cable trend is manually sounded out the people in a given scope one by one in order to break a criminal case, and determines cable front and back end homogeneity.This method will expend a large amount of time and manpower is sounded out the people in a given scope one by one in order to break a criminal case, and particularly in the trough of large-scale communications equipment room, the cable extruding is very serious, manually sounds out the people in a given scope one by one in order to break a criminal case and can't carry out, and sometimes because of the intersection of cable, even can go wrong.
Summary of the invention
The objective of the invention is to, a kind of energising cable detection method, Apparatus and system are provided, do not need manually to sound out the people in a given scope one by one in order to break a criminal case, also need not to cut off the electricity supply and just can distinguish the terminal up and down of electric wire cable.
For achieving the above object, according to an aspect of the present invention, provide a kind of energising cable detection method, comprising:
A, detect the existing harmonic voltage of described energising cable in energising cable upper end;
The harmonic signal of electric current generates excitation signal in B, the basis energising cable that collects;
C, described excitation signal is converted to the upper end that induced voltage is carried in described energising cable;
D, according to the existing harmonic voltage of described energising cable, described induced voltage and the harmonic voltage on the detected described energising cable in the lower end of described energising cable, described energising cable and other cable of switching on is distinguished.
For achieving the above object, according to another aspect of the present invention, provide a kind of signal generating apparatus, comprising:
Acquisition module is used for gathering the harmonic signal of described energising cable electric current;
Generation module is used for generating excitation signal according to described harmonic signal;
Load-on module is used for described excitation signal is converted to the upper end that induced voltage is carried in described energising cable.
For achieving the above object, according to another aspect of the present invention, provide a kind of energising cable detection system, comprising:
Signal generating apparatus is used for generating excitation signal according to the harmonic signal of the energising cable electric current that collects, and described excitation signal is converted to the upper end that induced voltage is carried in described energising cable;
The harmonic wave pick-up unit is used for detecting the existing harmonic voltage of described energising cable in energising cable upper end, and after loading induced voltage, detects the harmonic voltage on the described energising cable in the lower end of described energising cable.
Energising cable detection method of the present invention, Apparatus and system by load induced voltage on the energising cable, change the harmonic component on the energising cable, distinguish the terminal up and down of energising cable, do not need manually to sound out the people in a given scope one by one in order to break a criminal case, and have saved human cost; Also need not cuts off the electricity supply measures, and does not influence the regular traffic operation of equipment; Can be exactly the terminal up and down of energising cable be distinguished from a large amount of cables.
Description of drawings
Fig. 1 is the switch on process flow diagram of cable detection method embodiment of the present invention;
Fig. 2 is that the present invention's cable of switching on powers on and presses the stack synoptic diagram;
Fig. 3 is signal generating apparatus example structure figure of the present invention;
Fig. 4 is the structural drawing of generation module embodiment in the signal generating apparatus of the present invention;
Fig. 5 is the switch on structural drawing of cable detection system embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Method embodiment
Fig. 1 is the switch on process flow diagram of cable detection method embodiment of the present invention.As shown in Figure 1, present embodiment comprises:
The energising cable detection method of present embodiment by load induced voltage on the energising cable, changes the third-harmonic component on the energising cable, distinguishes the terminal up and down of energising cable, does not need manually to sound out the people in a given scope one by one in order to break a criminal case, and has saved human cost; Also need not cuts off the electricity supply measures, and does not influence the regular traffic operation of equipment; Can be exactly the terminal up and down of energising cable be distinguished from a large amount of cables.
Device embodiment
Fig. 3 is signal generating apparatus example structure figure of the present invention.As shown in Figure 3, present embodiment comprises:
Load-on module 36, be used for described excitation signal is converted to the upper end that induced voltage is carried in the energising cable, this load-on module 36 can be a field coil, the current signal of power amplifier output is transformed to corresponding bigger magnetic field amount, be used for changing the harmonic component in the cable, harmonic amplitude is produced certain influence.
Fig. 4 is the structural drawing of generation module embodiment in the signal generating apparatus of the present invention.As shown in Figure 4, generation module 34 comprises:
Wave filter 402 is used for the existing harmonic signal of described energising cable that collects is filtered, and removes the garbage signal amount, remains with the harmonic component of usefulness; This wave filter is by operational amplifier spare, the LC energy storage device, and resistance form filter network.
Sign-changing amplifier 404 oppositely amplifies the useful harmonic component of described wave filter output; This part is made up of integrated computing amplification, plays buffer action up and down simultaneously, prevents the interference of power amplifier to active filter.
Power amplifier 406 carries out power amplification with the output signal of described sign-changing amplifier, produces excitation signal.
Preferably, generation module 34 also comprises: o controller 408 is used for controlling the excitation signal that described power amplifier generates is enough to influence existing harmonic voltage in the described energising cable according to the harmonic signal of described energising cable electric current.In order to change the harmonic current components in the energising cable, to reach the requirement of detection limit.The excitation signal intensity of this output controller controls power amplifier output need be far longer than the induced signal intensity that cable current produces in field coil.
More preferably, generation module 34 also comprises: output isolation circuit 410, be used to isolate the induced voltage of excitation signal that described power amplifier generates and the generation of described load-on module, avoid induced signal in the load-on module to be subjected to the influence of power amplifier output signal.
The signal generating apparatus of present embodiment, generate needs by harmonic component and be carried in induced voltage on the energising cable, change the third-harmonic component on the energising cable, distinguish the terminal up and down of energising cable according to the electric current of energising on the cable, do not need manually to sound out the people in a given scope one by one in order to break a criminal case, saved human cost; Also need not cuts off the electricity supply measures, and does not influence the regular traffic operation of equipment; Can be exactly the terminal up and down of energising cable be distinguished from a large amount of cables.
System embodiment
Fig. 5 is the switch on structural drawing of cable detection system embodiment of the present invention.As shown in Figure 5, between distribution system and load, have many energising cables, present embodiment comprises:
Signal generating apparatus 52 is used for generating excitation signal according to the harmonic signal of the energising cable electric current that collects, and described excitation signal is converted to the upper end that induced voltage is carried in described energising cable;
Harmonic wave pick-up unit 54 is used for detecting the existing harmonic voltage of described energising cable in energising cable upper end, and after loading induced voltage, detects the harmonic voltage on the described energising cable in the lower end of described energising cable.
Preferably, harmonic wave pick-up unit 54 detects the existing third harmonic voltage of described energising cable in energising cable upper end, and after loading induced voltage, detects the third harmonic voltage on the described energising cable in the lower end of described energising cable.
The energising cable detection system of present embodiment by load induced voltage on the energising cable, changes the third-harmonic component on the energising cable, distinguishes the terminal up and down of energising cable, does not need manually to sound out the people in a given scope one by one in order to break a criminal case, and has saved human cost; Also need not cuts off the electricity supply measures, and does not influence the regular traffic operation of equipment; Can be exactly the terminal up and down of energising cable be distinguished from a large amount of cables.
It should be noted that: above embodiment is only unrestricted in order to explanation the present invention, and the present invention also is not limited in above-mentioned giving an example, and all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the claim scope of the present invention.
Claims (10)
1. an energising cable detection method is characterized in that, comprising:
A, detect the existing harmonic voltage of described energising cable in energising cable upper end;
The harmonic signal of electric current generates excitation signal in B, the basis energising cable that collects;
C, described excitation signal is converted to the upper end that induced voltage is carried in described energising cable;
D, according to the existing harmonic voltage of described energising cable, described induced voltage and the harmonic voltage on the detected described energising cable in the lower end of described energising cable, described energising cable and other cable of switching on is distinguished.
2. energising cable detection method according to claim 1 is characterized in that described steps A comprises:
Detect the existing third harmonic voltage of described energising cable in energising cable upper end.
3. energising cable detection method according to claim 1 is characterized in that described step B comprises:
Harmonic signal to electric current in the energising cable that collects filters, and removes the garbage signal amount, remains with the harmonic component of usefulness;
After described useful harmonic component oppositely amplified, and carry out power amplification, obtain excitation signal.
4. energising cable detection method according to claim 2 is characterized in that described step D comprises:
Calculate the vector superposed value of existing third harmonic voltage of described energising cable and described induced voltage;
When described vector superposed value equates with the detected third harmonic voltage in the lower end of described energising cable, then the upper and lower end of Jian Ceing is same energising cable; Otherwise, be difference energising cable.
5. a signal generating apparatus is characterized in that, comprising:
Acquisition module is used for gathering the harmonic signal of described energising cable electric current;
Generation module is used for generating excitation signal according to described harmonic signal;
Load-on module is used for described excitation signal is converted to the upper end that induced voltage is carried in described energising cable.
6. signal generating apparatus according to claim 5 is characterized in that, described generation module comprises:
Wave filter is used for the harmonic signal of the described energising cable electric current that collects is filtered, and removes the garbage signal amount, remains with the harmonic component of usefulness;
Sign-changing amplifier oppositely amplifies the useful harmonic component of described wave filter output;
Power amplifier carries out power amplification with the output signal of described sign-changing amplifier, produces excitation signal.
7. signal generating apparatus according to claim 6 is characterized in that, described generation module also comprises:
O controller is used for controlling the excitation signal that described power amplifier generates is enough to influence existing harmonic voltage in the described energising cable according to the harmonic signal of described energising cable electric current.
8. signal generating apparatus according to claim 6 is characterized in that, described generation module also comprises:
Output isolation circuit is used to isolate the excitation signal of described power amplifier generation and the induced voltage that described load-on module produces.
9. an energising cable detection system is characterized in that, comprising:
Signal generating apparatus is used for generating excitation signal according to the harmonic signal of the energising cable electric current that collects, and described excitation signal is converted to the upper end that induced voltage is carried in described energising cable;
The harmonic wave pick-up unit is used for detecting the existing harmonic voltage of described energising cable in energising cable upper end, and after loading induced voltage, detects the harmonic voltage on the described energising cable in the lower end of described energising cable.
10. energising cable detection system according to claim 9, it is characterized in that, described harmonic wave pick-up unit, be further used for detecting the existing third harmonic voltage of described energising cable in energising cable upper end, and after loading induced voltage, detect the third harmonic voltage on the described energising cable in the lower end of described energising cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250157 CN102081130B (en) | 2009-11-30 | 2009-11-30 | Electrified cable detection method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250157 CN102081130B (en) | 2009-11-30 | 2009-11-30 | Electrified cable detection method, device and system |
Publications (2)
| Publication Number | Publication Date |
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| CN102081130A true CN102081130A (en) | 2011-06-01 |
| CN102081130B CN102081130B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200910250157 Expired - Fee Related CN102081130B (en) | 2009-11-30 | 2009-11-30 | Electrified cable detection method, device and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399240A (en) * | 2013-08-13 | 2013-11-20 | 银川高新区负能科贸有限公司 | Sorting device and method for uninterruptible power cable |
| CN114113863A (en) * | 2021-12-03 | 2022-03-01 | 华北电力大学 | Harmonic voltage on-line measuring device and method for elbow-shaped terminal of high-voltage cable |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831324A2 (en) * | 1996-09-18 | 1998-03-25 | Alcatel | Impurity control |
| CN1558249A (en) * | 2004-01-20 | 2004-12-29 | 华北电力大学 | Charged detection method for insulator of high voltage direct current transmission line |
| CN201060248Y (en) * | 2007-07-31 | 2008-05-14 | 重庆市电力公司江北供电局 | Electrical cable recognizer |
-
2009
- 2009-11-30 CN CN 200910250157 patent/CN102081130B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0831324A2 (en) * | 1996-09-18 | 1998-03-25 | Alcatel | Impurity control |
| CN1558249A (en) * | 2004-01-20 | 2004-12-29 | 华北电力大学 | Charged detection method for insulator of high voltage direct current transmission line |
| CN201060248Y (en) * | 2007-07-31 | 2008-05-14 | 重庆市电力公司江北供电局 | Electrical cable recognizer |
Non-Patent Citations (1)
| Title |
|---|
| 乔琨等: "谐波对电力电缆的影响", 《电力学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103399240A (en) * | 2013-08-13 | 2013-11-20 | 银川高新区负能科贸有限公司 | Sorting device and method for uninterruptible power cable |
| CN114113863A (en) * | 2021-12-03 | 2022-03-01 | 华北电力大学 | Harmonic voltage on-line measuring device and method for elbow-shaped terminal of high-voltage cable |
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| Publication number | Publication date |
|---|---|
| CN102081130B (en) | 2013-06-05 |
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Inventor after: Wang Hanwu Inventor after: Peng Xiaochuan Inventor after: Wang Qi Inventor after: Shao Quan Inventor after: Xu Xiaoling Inventor after: Liu Hongmei Inventor after: Li Chunmei Inventor after: Wang Jiwen Inventor after: Liu Wei Inventor before: Wang Hanwu Inventor before: Huang Jie Inventor before: Feng Xin Inventor before: Yin Wenjun Inventor before: Yu You Inventor before: Wang Qi Inventor before: Liu Hongmei Inventor before: Li Chunmei Inventor before: Wang Jiwen Inventor before: Ma Ling Inventor before: Wang Fei Inventor before: An Hong |
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Free format text: CORRECT: INVENTOR; FROM: WANG HANWU YU YOU WANG QI LIU HONGMEI LI CHUNMEI WANG JIWEN MA LING WANG FEI AN HONG HUANG JIE FENG XIN YIN WENJUN TO: WANG HANWU PENG XIAOCHUAN WANG QI SHAO QUAN XU XIAOLING LIU HONGMEI LI CHUNMEI WANG JIWEN LIU WEI |
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| C14 | Grant of patent or utility model | ||
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Granted publication date: 20130605 Termination date: 20201130 |