CN102081130B - Electrified cable detection method, device and system - Google Patents
Electrified cable detection method, device and system Download PDFInfo
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- CN102081130B CN102081130B CN 200910250157 CN200910250157A CN102081130B CN 102081130 B CN102081130 B CN 102081130B CN 200910250157 CN200910250157 CN 200910250157 CN 200910250157 A CN200910250157 A CN 200910250157A CN 102081130 B CN102081130 B CN 102081130B
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- electrified cable
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- cable
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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 electrified cable detection method, Apparatus and system.
Background technology
In daily production maintenance work and engineering cutover, usually meet because of serial reasons such as cable identification come off, cause certain root electrified cable up and down terminal to confirm.In prior art, the method for confirmation electrified cable up and down terminal 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 upper 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 for some the important network element that cuts off the power supply, and work brings great inconvenience to the method to production maintenance.
The cable current mensuration is that each surveys once this cable load current at the upper and lower side of cable, then carrying out numeric ratio pair, determines whether to be same cable.This kind method can't adapt to through the cable identical, that load current is suitable for line; Due to cable waste, same cable upper and lower side electric current is not identical yet simultaneously, and the science that can't realize accurately compares; Secondly due 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 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 object of the invention is to, a kind of electrified 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 electrified cable detection method, comprising:
A, detect the existing harmonic voltage of described electrified cable in the electrified cable upper end;
In B, the basis electrified cable that collects, the harmonic signal of electric current generates excitation signal;
C, described excitation signal is converted to the upper end that induced voltage is carried in described electrified cable;
D, harmonic voltage existing according to described electrified cable, described induced voltage reach the harmonic voltage on the described electrified cable that detects in the lower end of described electrified cable, and described electrified cable and other electrified cables are 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 for the harmonic signal that gathers described electrified 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 electrified cable.
For achieving the above object, according to another aspect of the present invention, provide a kind of electrified cable detection system, comprising:
Signal generating apparatus is used for generating excitation signal according to the harmonic signal of the electrified cable electric current that collects, and described excitation signal is converted to the upper end that induced voltage is carried in described electrified cable;
Harmonic measurement device is used at the existing harmonic voltage of the electrified cable upper end described electrified cable of detection, and after loading induced voltage, detects the harmonic voltage on described electrified cable in the lower end of described electrified cable.
Electrified cable detection method of the present invention, Apparatus and system by load induced voltage on electrified cable, change the harmonic component on electrified cable, distinguish the terminal up and down of electrified 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 affect the regular traffic operation of equipment; Can be exactly the terminal up and down of electrified cable be distinguished from a large amount of cables.
Description of drawings
Fig. 1 is the process flow diagram of electrified cable detection method embodiment of the present invention;
Fig. 2 is voltage stack schematic diagram on electrified cable of the present invention;
Fig. 3 is signal generating apparatus example structure figure of the present invention;
Fig. 4 is the structural drawing of generation module embodiment in signal generating apparatus of the present invention;
Fig. 5 is the structural drawing of electrified cable detection system embodiment of the present invention.
Embodiment
The present invention is described in detail below in conjunction with accompanying drawing.
Embodiment of the method
Fig. 1 is the process flow diagram of electrified cable detection method embodiment of the present invention.As shown in Figure 1, the present embodiment comprises:
The electrified cable detection method of the present embodiment by load induced voltage on electrified cable, changes the third-harmonic component on electrified cable, distinguishes the terminal up and down of electrified 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 affect the regular traffic operation of equipment; Can be exactly the terminal up and down of electrified 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, the 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 electrified cable, this load-on module 36 can be field coil, the current signal of power amplifier output is transformed to corresponding larger magnetic field amount, be used for changing the harmonic component in cable, harmonic amplitude is produced certain impact.
Fig. 4 is the structural drawing of generation module embodiment in signal generating apparatus of the present invention.As shown in Figure 4, generation module 34 comprises:
Sign-changing amplifier 404 oppositely amplifies the useful harmonic component of described wave filter output; This part is comprised of the integrated computation amplification, plays simultaneously the up and down buffer action, prevents that power amplifier is to the interference of active filter.
Preferably, generation module 34 also comprises: o controller 408 is used for controlling according to the harmonic signal of described electrified cable electric current the excitation signal that described power amplifier generates is enough to affect existing harmonic voltage in described electrified cable.In order to change the harmonic current components in electrified 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 for isolating the induced voltage of excitation signal that described power amplifier generates and the generation of described load-on module, avoid induced signal in load-on module to be subject to the impact of power amplifier output signal.
The signal generating apparatus of the present embodiment, be carried in induced voltage on electrified cable by generate needs according to the harmonic component of the electric current on electrified cable, change the third-harmonic component on electrified cable, distinguish the terminal up and down of electrified 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 affect the regular traffic operation of equipment; Can be exactly the terminal up and down of electrified cable be distinguished from a large amount of cables.
System embodiment
Fig. 5 is the structural drawing of electrified cable detection system embodiment of the present invention.As shown in Figure 5, between distribution system and load, have many electrified cables, the present embodiment comprises:
Preferably, harmonic measurement device 54 at the existing third harmonic voltage of the electrified cable upper end described electrified cable of detection, and after loading induced voltage, detects the third harmonic voltage on described electrified cable in the lower end of described electrified cable.
The electrified cable detection system of the present embodiment by load induced voltage on electrified cable, changes the third-harmonic component on electrified cable, distinguishes the terminal up and down of electrified 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 affect the regular traffic operation of equipment; Can be exactly the terminal up and down of electrified cable be distinguished from a large amount of cables.
It should be noted that: above embodiment is only unrestricted in order to the present invention to be described, the present invention also is not limited in above-mentioned giving an example, and all do not break away from technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in claim scope of the present invention.
Claims (10)
1. an electrified cable detection method, is characterized in that, comprising:
A, detect the existing harmonic voltage of described electrified cable in the electrified cable upper end;
In B, the basis electrified cable that collects, the harmonic signal of electric current generates excitation signal;
C, described excitation signal is converted to the upper end that induced voltage is carried in described electrified cable;
D, harmonic voltage existing according to described electrified cable, described induced voltage reach the harmonic voltage on the described electrified cable that detects in the lower end of described electrified cable, and described electrified cable and other electrified cables are distinguished.
2. electrified cable detection method according to claim 1, is characterized in that, described steps A comprises:
At the existing third harmonic voltage of the electrified cable upper end described electrified cable of detection.
3. electrified cable detection method according to claim 1, is characterized in that, described step B comprises:
Harmonic signal to electric current in the electrified cable that collects filters, and removes the garbage signal amount, remains with the harmonic component of use;
After described useful harmonic component is oppositely amplified, and carry out power amplification, obtain excitation signal.
4. electrified cable detection method according to claim 2, is characterized in that, described step D comprises:
Calculate the vector superposed value of the existing third harmonic voltage of described electrified cable and described induced voltage;
When described vector superposed value equates with the third harmonic voltage that the lower end of described electrified cable detects, the upper and lower end that detects is same electrified cable; Otherwise, be different electrified cables.
5. a signal generating apparatus, is characterized in that, comprising:
Acquisition module is for the harmonic signal that gathers the electrified 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 electrified 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 electrified cable electric current that collects is filtered, and removes the garbage signal amount, remains with the harmonic component of use;
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 according to the harmonic signal of described electrified cable electric current the excitation signal that described power amplifier generates is enough to affect existing harmonic voltage in described electrified cable.
8. signal generating apparatus according to claim 6, is characterized in that, described generation module also comprises:
Output isolation circuit is used for isolating the excitation signal of described power amplifier generation and the induced voltage that described load-on module produces.
9. an electrified cable detection system, is characterized in that, comprising:
Signal generating apparatus is used for generating excitation signal according to the harmonic signal of the electrified cable electric current that collects, and described excitation signal is converted to the upper end that induced voltage is carried in described electrified cable;
Harmonic measurement device is used at the existing harmonic voltage of the electrified cable upper end described electrified cable of detection, and after loading induced voltage, detects the harmonic voltage on described electrified cable in the lower end of described electrified cable.
10. electrified cable detection system according to claim 9, it is characterized in that, described harmonic measurement device, be further used at the existing third harmonic voltage of the electrified cable upper end described electrified cable of detection, and after loading induced voltage, detect the third harmonic voltage on described electrified cable in the lower end of described electrified 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910250157 CN102081130B (en) | 2009-11-30 | 2009-11-30 | Electrified cable detection method, device and system |
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| CN102081130A CN102081130A (en) | 2011-06-01 |
| CN102081130B true CN102081130B (en) | 2013-06-05 |
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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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103399240B (en) * | 2013-08-13 | 2015-12-02 | 银川高新区负能科贸有限公司 | Uninterrupted power supply cable sorting device and method |
| CN114113863B (en) * | 2021-12-03 | 2022-10-28 | 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 (2)
| Title |
|---|
| 乔琨等.谐波对电力电缆的影响.《电力学报》.2008,第23卷(第1期), |
| 谐波对电力电缆的影响;乔琨等;《电力学报》;20080229;第23卷(第1期);75-77 * |
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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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