CN103809074B - A kind of power cable safety distinguishing apparatus and recognition methods - Google Patents
A kind of power cable safety distinguishing apparatus and recognition methods Download PDFInfo
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Abstract
The invention discloses a kind of power cable safety distinguishing apparatus and recognition methods, comprise AC power supply module, alternating current detection module, switch module and electric current induction module; Described AC power supply module is greater than 220V; Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier; Also comprise electric current induction module, the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier.
Description
Technical field
The present invention relates to a kind of power cable safety distinguishing apparatus and recognition methods.
Background technology
Power cable (powercable), for transmitting and distribute the cable of electric energy.Be usually used in Urban Underground electrical network, the lead line of power house, the in-line power of industrial and mining enterprises and cross river, excessively extra large submarine transmission line.In power circuit, the proportion shared by power cable increases just gradually.Power cable is in order to transmission with distribute the cable product of high-power power in the basic routing line of electric system, comprising the power cable of 1-500KV and above various electric pressure, various insulation.
Laying of power cable does not need shaft tower, not climate environmental limit, have little to surrounding environment influence, power supply is reliable, security advantages of higher, is widely used in distribution electric system.But be subject to the road surface real estate impact that city is limited, on same path, often arrange many even tens power cables, and the form that power cable adopts poling or raceway groove to lay usually, and raceway groove is also usually because needing of beautifying of municipal administration makes closed or semi-enclosed.Once the power cable method of operation changes, as the reconfiguration etc. of power cable open loop or power cable, as the not timely label by the power cable running mark in sewer pipe changes, then bring very large hidden danger can to later construction.
Due to the electric substation in power cable both sides or pole line terminal, its power cable all holds correct label or mark, therefore the method for tional identification power cable is exactly from one end of electric substation or overhead transmission line, the way detected by an unaided eye on the way along power cable carries out Tracking Recognition, when in sewer pipe, power cable is more, path longer and complicated again time, just necessary significant care, once power cable ditch is closed or semiclosed, local is only had to open, workmen just must creep into power cable ditch from the one end of opening, bend to touch power cable to move ahead, know the place needing construction working.Besides, if power cable raceway groove is closed longer, workmen is just very arduous, and its labour intensity is very large, and likely touches other running power cables, so abnormally dangerous.In fact when power cable close raceway groove long time, traditional recognition methods is obviously infeasible.Traditional power cable recognition methods thinks that factor is too many, even if the raceway groove closed is not very long, but has carelessness a little, will get wrong, time-consumingly requires great effort again, and inefficiency, recognition correct rate is low, dangerous.
For above problem, invention and created name is: the recognition methods of power cable, and the patent No. is: the patent of invention of 2004100145331 proposes a kind of new solution.Recognition principle schematic diagram as shown in Figure 1.By low-voltage alternating current power supply 1 that is external for one end of power cable 4 to be identified, switch 3 and reometer 2, low-voltage alternating current power supply 1 ground connection, its low-voltage alternating current power supply 1 is 36V and following safe voltage, by the core ground connection of power cable 4 other end to be identified, the induction installation of current detecting instrument 5 is sleeved on power cable, Closing Switch 3, if when current detecting instrument 5 is equal with the size of current of reometer 2, can be judged as same power cable.
The method possible in theory, but basic None-identified under finding a lot of situation in practice.Main cause: the real current value of the above recognition methods when power cable line is long is also with regard to a few to tens of milliamperes, but often there are tens power cables in same raceway groove, and in these power cables, usually run big current, the lines of magnetic induction of running power cable also can in the induction installation of current detecting instrument 5 generation current, and the electric current produced is much larger than the current value in power cable to be identified.
Summary of the invention
The object of the present invention is to provide a kind of power cable safety distinguishing apparatus and recognition methods, adopt that the recognition methods of this recognition device is safe and reliable, time saving and energy saving, accuracy is very high.
In order to realize above object, inventing the technical scheme adopted is: a kind of power cable safety distinguishing apparatus, comprises AC power supply module, alternating current detection module, switch module and electric current induction module;
Described AC power supply module is greater than 220V;
One end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is for being electrically connected power cable to be identified, and the other end of power cable to be identified needs ground connection;
Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier;
The first described DC power supplier is the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module for power supply;
The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module;
The control end of the described switch module described in the first controller module electrical connection;
The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module;
The first described infrared induction module has nobody for detecting the surrounding of power cable to be identified near one end of switch module and detection signal is input to the first controller module;
Also comprise electric current induction module, the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier;
The second described DC power supplier is described the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module for power supply;
The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module;
The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module;
The second described infrared induction module has nobody for the surrounding detecting the power cable other end to be identified and detection signal is input to second controller module;
The first described controller module control the first wireless communication module and second controller module control under the second wireless communication module carry out exchanges data.
Be more preferably technical scheme, described switch module adopts bidirectional triode thyristor to realize.
Be more preferably technical scheme, the conducting turn-off time of described bidirectional triode thyristor is less than 50ms.
Be more preferably technical scheme, the first described infrared induction module, the second infrared induction module distance of reaction are greater than 1.5 meters.
Be more preferably technical scheme, the first described controller module and second controller module all adopt MSP430 single-chip microcomputer.
Be more preferably technical scheme, described AC power supply module voltage is at 220V ~ 380V.
A kind of power cable safety recognizing method, comprises AC power supply module, alternating current detection module, switch module and electric current induction module; Described AC power supply module is greater than 220V;
Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier;
Also comprise electric current induction module, the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier;
The first step:
By one end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is electrically connected power cable to be identified, the other end ground connection of power cable to be identified;
The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module;
The control end of the described switch module described in the first controller module electrical connection;
The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module;
The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module;
The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module;
Wherein, the first infrared induction module installation is in the adjacent one end of power cable to be identified near switch module, and the second infrared induction module installation is near the other end of power cable to be identified; Power cable to be identified should through the induction installation of electric current induction module;
Second step: when described switch module does not have conducting, the sensed data of described electric current induction module is stored into the second data memory module by second controller module;
3rd step: when the people at power cable two ends to be identified is not in the induction range of the first infrared induction module and the second infrared induction module, first controller module allows described switch module conducting X millisecond by the control end of described switch module, then shutdown switch module at once; X≤50;
4th step: the sensed data of electric current induction module described when the sensed data of electric current induction module described when switch module conducting and the non-conducting of switch module is done difference operation by second controller module, be designated as M, and compare with the detection data N of described alternating current detection module, if M=N, then illustrate that power cable to be identified is same power cable, otherwise illustrate that power cable to be identified is not same power cable;
5th step: the first display module and the second display module will detect data and computing judgment result displays out.
In power cable safety recognizing method, described switch module adopts bidirectional triode thyristor to realize.
In power cable safety recognizing method, the first described infrared induction module, the second infrared induction module distance of reaction are greater than 1.5 meters.
In power cable safety recognizing method, the first described controller module and second controller module all adopt MSP430 single-chip microcomputer.
In power cable safety recognizing method, described AC power supply module voltage is at 220V ~ 380V.
Compared with prior art, the invention has the advantages that: the first, the invention solves the interference of other operation power cables that background technology part is mentioned; The second, the present invention highlyer considers safety due to the AC power supply module voltage adopted, so the ON time of switch module is less than 50ms, even if this extremely of short duration ON time is got an electric shock and come also to be comparatively safe to human body; 3rd, in order to more safety for the purpose of, the two ends of power cable to be identified are all provided with the first infrared induction module and the second infrared induction module respectively, when people near power cable to be identified time, first controller module can not allow switch module conducting, so very safe; 4th, owing to have employed wireless communication technology, so the staff at power cable two ends to be identified only needs the display module having a look two ends to know, power cable to be identified is same power cable.In a word, recognition methods of the present invention is very safe, and accuracy rate is very high, and work efficiency improves greatly.
Accompanying drawing explanation
Fig. 1 is prior art power cable recognition methods schematic diagram.
Fig. 2 is the schematic diagram of power cable safety distinguishing apparatus of the present invention.
Embodiment
Below in conjunction with accompanying drawing, invention is described in further detail.
A kind of power cable safety distinguishing apparatus, comprises AC power supply module, alternating current detection module, switch module and electric current induction module; Described AC power supply module equals 220V;
One end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is for being electrically connected power cable to be identified, and the other end of power cable to be identified needs ground connection;
Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier; The first described DC power supplier is the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module for power supply; The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module; The control end of the described switch module described in the first controller module electrical connection; The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module; The first described infrared induction module has nobody for detecting the surrounding of power cable to be identified near one end of switch module and detection signal is input to the first controller module;
Also comprise electric current induction module, the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier; The second described DC power supplier is described the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module for power supply; The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module; The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module; The second described infrared induction module has nobody for the surrounding detecting the power cable other end to be identified and detection signal is input to second controller module; The first described controller module control the first wireless communication module and second controller module control under the second wireless communication module carry out exchanges data.
Wherein, described switch module adopts bidirectional triode thyristor BTA06-600C to realize;
Wherein, the first described infrared induction module, the second infrared induction module distance of reaction 2 meters.
Wherein, the first described controller module and second controller module all adopt MSP430 single-chip microcomputer.
Concrete power cable safety recognizing method:
The first step:
By one end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is electrically connected power cable to be identified, the other end ground connection of power cable to be identified;
The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module;
The control end of the described switch module described in the first controller module electrical connection;
The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module;
The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module;
The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module;
Wherein, the first infrared induction module installation is in the adjacent one end of power cable to be identified near switch module, and the second infrared induction module installation is near the other end of power cable to be identified; Power cable to be identified should through the induction installation of electric current induction module;
Second step: when described switch module does not have conducting, the sensed data of described electric current induction module is stored into the second data memory module by second controller module;
3rd step: when the people at power cable two ends to be identified is not in the induction range of the first infrared induction module and the second infrared induction module, first controller module allows described switch module conducting 50 milliseconds by the control end of described switch module, then shutdown switch module at once;
4th step: the sensed data of electric current induction module described when the sensed data of electric current induction module described when switch module conducting and the non-conducting of switch module is done difference operation by second controller module, be designated as M, and compare with the detection data N of described alternating current detection module, if M=N, then illustrate that power cable to be identified is same power cable, otherwise illustrate that power cable to be identified is not same power cable;
5th step: the first display module and the second display module will detect data and computing judgment result displays out.
Principle of work of the present invention: when the sensed data of electric current induction module and power cable to be identified conduct electricity when the present invention is not conducted electricity by power cable to be identified, the sensed data of electric current induction module does difference operation, thus the undesired signal eliminating that other run power cables; Safety is considered, so the ON time of switch module is less than 50ms, even if it is also comparatively safe that this extremely of short duration ON time is got an electric shock next to human body because the AC power supply module voltage adopted is higher; In order to more for the purpose of safety, the two ends of power cable to be identified are all provided with the first infrared induction module and the second infrared induction module respectively, when people near power cable to be identified time, the first controller module can not allow switch module conducting, so very safe; Owing to have employed wireless communication technology, so the staff at power cable two ends to be identified only needs the display module having a look two ends to know, power cable to be identified is same power cable.In a word, recognition methods of the present invention is very safe, and accuracy rate is very high, and work efficiency improves greatly.
Claims (10)
1. a power cable safety distinguishing apparatus, is characterized in that: comprise AC power supply module, alternating current detection module, switch module and electric current induction module;
Described AC power supply module is greater than 220V;
One end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is for being electrically connected power cable to be identified, and the other end of power cable to be identified needs ground connection;
Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier;
The first described DC power supplier is the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module for power supply;
The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module;
The control end of the described switch module described in the first controller module electrical connection;
The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module;
The first described infrared induction module has nobody for detecting the surrounding of power cable to be identified near one end of switch module and detection signal is input to the first controller module;
Also comprise the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier;
The second described DC power supplier is described the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module for power supply;
The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module;
The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module;
The second described infrared induction module has nobody for the surrounding detecting the power cable other end to be identified and detection signal is input to second controller module;
The first described controller module control the first wireless communication module and second controller module control under the second wireless communication module carry out exchanges data.
2. a kind of power cable safety distinguishing apparatus according to claim 1, is characterized in that: described switch module adopts bidirectional triode thyristor to realize.
3. a kind of power cable safety distinguishing apparatus according to claim 2, is characterized in that: the conducting turn-off time of described bidirectional triode thyristor is less than 50ms.
4. a kind of power cable safety distinguishing apparatus according to claim 1, is characterized in that: the first described infrared induction module, the second infrared induction module distance of reaction are greater than 1.5 meters.
5. a kind of power cable safety distinguishing apparatus according to claim 1, is characterized in that: the first described controller module and second controller module all adopt MSP430 single-chip microcomputer.
6. a kind of power cable safety distinguishing apparatus according to claim 1, is characterized in that: described AC power supply module voltage is at 220V ~ 380V.
7. a power cable safety recognizing method, is characterized in that: comprise AC power supply module, alternating current detection module, switch module and electric current induction module; Described AC power supply module is greater than 220V;
Also comprise the first current/voltage modular converter, the first A/D module, the first controller module, the first data memory module, the first wireless communication module, the first display module, the first infrared induction module and the first DC power supplier;
Also comprise the second current/voltage modular converter, the second A/D module, second controller module, the second data memory module, the second wireless communication module, the second display module, the second infrared induction module and the second DC power supplier;
The first step: by one end ground connection of described AC power supply module, the input end of the alternating current detection module described in other end electrical connection; The input end of the switch module described in output terminal electrical connection of described alternating current detection module, the output terminal of described switch module is electrically connected power cable to be identified, the other end ground connection of power cable to be identified;
The detection data of described alternating current detection module are input to the first controller module by the first current/voltage modular converter and the first A/D module;
The control end of the described switch module described in the first controller module electrical connection;
The first described data memory module, the first wireless communication module, the first display module, the first infrared induction module are electrically connected with the first controller module;
The induced signal of described electric current induction module is input to second controller module by the second current/voltage modular converter, the second A/D module;
The second described data memory module, the second wireless communication module, the second display module, the second infrared induction module are electrically connected with second controller module;
Wherein, the first infrared induction module installation is in the adjacent one end of power cable to be identified near switch module, and the second infrared induction module installation is near the other end of power cable to be identified; Power cable to be identified should through the induction installation of electric current induction module;
Second step: when described switch module does not have conducting, the sensed data of described electric current induction module is stored into the second data memory module by second controller module;
3rd step: when the people at power cable two ends to be identified is not in the induction range of the first infrared induction module and the second infrared induction module, first controller module allows described switch module conducting X millisecond by the control end of described switch module, then shutdown switch module at once; X≤50;
4th step: the sensed data of electric current induction module described when the sensed data of electric current induction module described when switch module conducting and the non-conducting of switch module is done difference operation by second controller module, be designated as M, and compare with the detection data N of described alternating current detection module, if M=N, then illustrate that power cable to be identified is same power cable, otherwise illustrate that power cable to be identified is not same power cable;
5th step: the first display module and the second display module will detect data and computing judgment result displays out.
8. a kind of power cable safety recognizing method according to claim 7, is characterized in that: described switch module adopts bidirectional triode thyristor to realize.
9. a kind of power cable safety recognizing method according to claim 7, is characterized in that: the first described infrared induction module, the second infrared induction module distance of reaction are greater than 1.5 meters.
10. a kind of power cable safety recognizing method according to claim 7, is characterized in that: the first described controller module and second controller module all adopt MSP430 single-chip microcomputer; Described AC power supply module voltage is at 220V ~ 380V.
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| CN104113415A (en) * | 2014-06-16 | 2014-10-22 | 国家电网公司 | Tele-control wireless channel system for debugging and control of power system |
| CN109307817B (en) * | 2018-10-24 | 2024-04-02 | 中国南方电网有限责任公司超高压输电公司柳州局 | Cable live identification instrument and identification method |
| CN111077831A (en) * | 2019-12-30 | 2020-04-28 | 江苏三希科技股份有限公司 | Monitoring system for realizing pollution emission through electric power information |
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