CN110047234A - A kind of power cable burglary-resisting system and method - Google Patents
A kind of power cable burglary-resisting system and method Download PDFInfo
- Publication number
- CN110047234A CN110047234A CN201910377475.5A CN201910377475A CN110047234A CN 110047234 A CN110047234 A CN 110047234A CN 201910377475 A CN201910377475 A CN 201910377475A CN 110047234 A CN110047234 A CN 110047234A
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- oscillation wave
- burglary
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 230000010355 oscillation Effects 0.000 claims abstract description 33
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 239000003990 capacitor Substances 0.000 claims description 18
- 238000012360 testing method Methods 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 3
- 238000013016 damping Methods 0.000 claims 1
- 238000004891 communication Methods 0.000 description 4
- 230000003534 oscillatory effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/12—Mechanical actuation by the breaking or disturbance of stretched cords or wires
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1609—Actuation by interference with mechanical vibrations in air or other fluid using active vibration detection systems
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B25/00—Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems
Abstract
The present invention relates to cable theft-prevention technical fields, more specifically, it is related to a kind of power cable burglary-resisting system and method, including anti-theft monitoring system and alarm system, anti-theft monitoring system and alarm system communicate to connect, and anti-theft monitoring system includes that oscillation wave generates unit, tested cable, control switch and display control unit, are tested the equal three-phase of cable ends and are shorted, oscillation wave generates unit and is electrically connected with tested cable, and oscillation wave generates unit, control switch and display control unit and is sequentially connected electrically.Discovery cable can still be able in the case where cable stealer short-circuiting cable to be stolen and quickly stolen cable is positioned and alarmed.
Description
Technical field
The present invention relates to cable theft-prevention technical fields, more particularly, to a kind of power cable burglary-resisting system and method.
Background technique
In urban power distribution network, cable power supply is mostly used, power distribution network infrastructure project has been understood within the previous day to a couple of days of putting into operation
At the laying of power cable.And after power cable layer, fail the energization that puts into operation, usually becomes the target of cable stealer.In electricity
Power cable laying is finished to before putting into operation, it occur frequently that the stolen event of cable, causing infrastructure project to put into operation same day discovery cable can not
It is powered, causes damages to electric power enterprise, country, the people.
It in view of the problem, needs to invent a kind of power cable burglary-resisting system, anti-theft monitoring is carried out to the cable that do not put into operation, and
Issue alarm signal in time when cable is stolen.
Currently, existing power cable burglary-resisting system has several classes in the market:
(1) it current detection type: pressurizes to cable, a constant current is passed the cable through, when electric current becomes 0, then it is assumed that cable is disconnected
It opens stolen.
(2) capacitor detecting: cable short at one end ground connection, the other end are connected to resonance circuit, are stolen once cable disconnects,
Cable becomes a capacitor, the alarm of resonance circuit output signal.
(3) power carrier type: cable auxiliary power carrier communication signal, communication signal issue after can not yet another end receive
When, it is believed that cable disconnects stolen.
The above power cable burglary-resisting system has the disadvantage that when stealer uses one section in conductor short-circuiting cable and steals
When stealing this section, it can not detect that cable disconnects, be mistakenly considered cable and be not stolen, only short circuit conductor just finds that cable is disconnected after being blown
Open, can not and alarm.
Summary of the invention
The present invention in order to overcome at least one of the drawbacks of the prior art described above, provide a kind of power cable burglary-resisting system and
Method can still be able to discovery cable in the case where cable stealer short-circuiting cable and be stolen and quickly carry out to stolen cable
Positioning and alarm.
In order to solve the above technical problems, the technical solution adopted by the present invention is that: a kind of power cable burglary-resisting system, including it is anti-
Monitoring system and alarm system are stolen, the anti-theft monitoring system and alarm system communicate to connect, the anti-theft monitoring system
It is short that unit, tested cable, control switch and display control unit, the equal three-phase of tested cable ends are generated including oscillation wave
It connects, the oscillation wave generates unit and is electrically connected with tested cable, and the oscillation wave generates unit, control switch and display control
Unit processed is sequentially connected electrically.
Further, it includes power supply, equivalent capacity and inductance that the oscillation wave, which generates unit, the power supply, equivalent
Capacitor, inductance and tested cable are sequentially connected electrically.
Further, the power supply is the DC power supply of 0-36kV.
It further, further include test circuit, the test circuit includes the partial pressure unit electrically in parallel with tested cable.
Further, the partial pressure unit includes the high voltage unit being electrically connected to each other and low voltage unit, the high pressure
Unit is composed in parallel by first resistor and first capacitor, and the low voltage unit is composed in parallel by second resistance and the second capacitor.
Further, the resistance value of the first resistor is the 10 of the resistance value of second resistance4Times, described second is electric
The capacitance of appearance is the 10 of the capacitance of first capacitor4Times.
It further, further include the first operational amplifier, the high voltage unit, the first operational amplifier and display control
Unit is sequentially connected electrically.
It further, further include second operational amplifier, filter and PD coupling unit, the low voltage unit, PD coupling
It closes unit, second operational amplifier, filter and display control unit to be sequentially connected electrically, the PD coupling unit ground connection.
A kind of power cable theft preventing method generated oscillation wave with 5 seconds using above-mentioned anti-theft monitoring system for interval, right
The information that oscillation wave returns makes analysis, cable mid head, cable termination range information and the preset value that analysis result is obtained
It compares, determines whether power cable parameter changes；
If when cable is truncated, causes cable data to change by other conductors short circuit situation, oscillation wave return information
Significant change can be generated, available other range informations in addition to cable mid head, terminal is computed, then may determine that cable
Parameter changes, cable is truncated or is shorted by external force, and the alarm system triggers actuation of an alarm, is joined according to calculated cable
Number changes point at a distance from live end, reports and submits and the specified place that cable is stolen occurs.
Further, before oscillation wave generates, control switch is disconnected, and DC power supply boosts to preset value, to inductance, tested electricity
The equivalent capacity of cable charges；After charging complete, display control unit control control switch is closed, the circuit LC that inductance capacitance is formed
Resonance occurs, generates damp oscillatory wave；Partial pressure unit is shown in display control unit for testing oscillating wave voltage curve
Show；Using traveling wave bounce technique, the calculating to cable termination distance, cable mid head distance may be implemented；
Velocity of EM-waves is determining in conductor, it is assumed that velocity of wave v, and oscillation wave generation time is t1, the total n of this section of cable
A cable mid head, it is t2 that oscillation wave, which reflects time of return by first cable mid head, passes through second cable mid head
Reflection time of return is t3, and reflecting time of return by n-th of cable mid head is tn+1, is by cable termination time of return
Tn+2, then first cable mid head is apart from live end distance are as follows: L1=v*/2；N-th of cable mid head apart from live end away from
From are as follows: Ln=v*/2；Total cable length are as follows: L=v* (tn+2-t1)/2；
And total cable length, each cable mid head according to live end distance be in cabling process it is known, therefore on
Stating each time should also be as being one-to-one with known distance.
Compared with prior art, beneficial effect is: can still be able to send out in the case where cable stealer short-circuiting cable
Existing cable is stolen and quickly stolen cable is positioned and alarmed.
Detailed description of the invention
Fig. 1 is the schematic diagram of anti-theft monitoring system in the present invention；
Fig. 2 is overall schematic in the present 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.
The same or similar label correspond to the same or similar components in the attached drawing of the embodiment of the present invention；It is retouched in of the invention
In stating, it is to be understood that if the orientation or positional relationship for having the instructions such as term " on ", "lower", "left", "right" is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of description of the present invention and simplification of the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore positional relationship is described in attached drawing
Term only for illustration, should not be understood as the limitation to this patent, for the ordinary skill in the art, can
To understand the concrete meaning of above-mentioned term as the case may be.
As shown in Figure 1, 2, a kind of power cable burglary-resisting system, including anti-theft monitoring system and alarm system, anti-theft monitoring
System and alarm system communication connection, wherein anti-theft monitoring system includes that oscillation wave generates unit, tested cable 8, control switch 5
With display control unit 1, be tested the equal three-phase in 8 both ends of cable and be shorted, oscillation wave generate unit include the power supply 2 being sequentially connected in series, etc.
Capacitor 3 and inductance 4 are imitated, control switch 5 is semiconductor switch, and semiconductor switch access electricity between equivalent capacity 3 and inductance 4 returns
Road simultaneously connects display control unit 1.Electrical circuit between inductance 4 and tested cable 8 has accessed test circuit, test circuit with
Tested cable 8 is in parallel, wherein test circuit includes partial pressure unit, partial pressure unit one end is electrically connected with tested cable 8, another termination
Ground, wherein the voltage difference between partial pressure unit and tested 8 connecting pin of cable and ground terminal is consistent with tested 8 voltage of cable.Wherein
Power supply 2 is the DC power supply of 0-36kV.
Specifically, partial pressure unit is made of high voltage unit 6 and low voltage unit 7, high voltage unit 6 and the mutually electricity of low voltage unit 7
Connection, wherein high voltage unit 6 is electrically connected with tested cable 8, and low voltage unit 7 is grounded.High voltage unit 6 is by first resistor 61 and first
Capacitor 62 composes in parallel, and low voltage unit 7 is composed in parallel by second resistance 71 and the second capacitor 72.The resistance value of first resistor 61 is
The 10 of the resistance value of second resistance 714Times, the capacitance of the second capacitor 72 is the 10 of the capacitance of first capacitor 624Times.In this reality
It applies in example, the resistance value of first resistor 61 is 150M Ω, and the resistance value of second resistance 71 is 15K Ω, the capacitor of the second capacitor 72
Value is 10 μ F, and the capacitance of first capacitor 62 is 1nF.High voltage unit 6 bears high pressure, low voltage unit 7 bears low pressure, respectively undertakes point
Pressing cell voltage simultaneously is also a part of voltage cable.
In addition, low voltage unit 7 connect with display control unit 1, can show by filtering out interference waveform after filter 12
Display waveform in control unit 1.The waveform is consistent with voltage cable waveform, is converted, can be converted by known partial pressure no-load voltage ratio
Coordinate shows voltage cable.The voltage cable waveform can be used to analytical calculation, obtain each cable mid head location information.Specifically
Ground, low voltage unit 7, PD coupling unit 9, second amplify arithmetic unit, filter 12 and display control unit 1 and are sequentially connected electrically, PD
Coupling unit 9 is grounded.In addition, high voltage unit 6 is electrically connected by the first amplification arithmetic unit with display control unit 1.
In the present embodiment, alarm system and display control unit 1 communicate to connect, and wherein display control unit 1 is to calculate
Machine is obtained to tested 8 terminal distance of cable, among cable for collecting data collected and carrying out analytical calculation to data
The calculating of head distance is to carry out anti-thefting monitoring to cable, if cable is stolen, computer sends the signal to alarm system
It notifies staff and alarms.Wherein, which is made of signal transmitting unit 13 and reception terminal 14, signal hair
Unit 13 and display control unit 1 is sent to communicate to connect, the warning message of display control unit 1 is sent by signal transmitting unit 13
To reception terminal 14 to notify staff and alarm.The mobile phone and alarm platform that terminal 14 is engineering staff are wherein received,
When cable is stolen, the cable monitored by anti-theft monitoring system is stolen the information such as position and is sent to engineering staff
It mobile phone and is sent directly to alarm platform and alarms, engineering staff can rush for rapidly scene or immediately pass through 110 reporting
It is alert, be conducive to crack larceny case.
Specifically, antitheft method is carried out by this power cable burglary-resisting system are as follows: between oscillation wave generates unit to be within 5 seconds
Every generate oscillation wave, to oscillation wave return information make analysis, by analysis result obtain cable mid head, cable termination away from
It is compared from information and preset value, determines whether power cable parameter changes；
If when cable is truncated, causes cable data to change by other conductors short circuit situation, oscillation wave return information
Significant change can be generated, available other range informations in addition to cable mid head, terminal is computed, then may determine that cable
Parameter changes, cable is truncated or is shorted by external force, and the alarm system triggers actuation of an alarm, is joined according to calculated cable
Number changes point at a distance from live end, reports and submits and the specified place that cable is stolen occurs.
Wherein, before oscillation wave generates, control switch 5 is disconnected, and DC power supply boosts to preset value, to inductance 4, tested cable
8 equivalent capacity 3 charges；After charging complete, display control unit 1 controls control switch 5 and closes, and the LC that inductance capacitance is formed is returned
Resonance occurs for road, generates damp oscillatory wave；Partial pressure unit is for testing oscillating wave voltage curve, in display control unit 1
Display；Using traveling wave bounce technique, the calculating to cable termination distance, cable mid head distance may be implemented；
Velocity of EM-waves is determining in conductor, it is assumed that velocity of wave v, and oscillation wave generation time is t1, the total n of this section of cable
A cable mid head, it is t2 that oscillation wave, which reflects time of return by first cable mid head, passes through second cable mid head
Reflection time of return is t3, and reflecting time of return by n-th of cable mid head is tn+1, is by cable termination time of return
Tn+2, then first cable mid head is apart from live end distance are as follows: L1=v*t2-t1/2；N-th of cable mid head distance pressurization
Hold distance are as follows: Ln=v*tn+1-t1/2；Total cable length are as follows: L=v* (tn+2-t1)/2；
And total cable length, each cable mid head according to live end distance be in cabling process it is known, therefore on
Stating each time should also be as being one-to-one with known distance.
Computer judge cable be stolen it is occurent in a flash, triggering alarm system movement, according to calculated cable
Parameter variations point reports and submits and the specified place that cable is stolen occurs at a distance from live end.Warning message system by wireless communication
It is transferred to the mobile phone terminal of infrastructure project personnel, engineering staff can rush for scene and at once by 110 alarms after being notified.
By this burglary-resisting system and theft preventing method, existing cable anti-theft technique nothing when cable is shorted can solve
The stolen bottleneck of method discovery at once it can be found that cable is stolen, and can precisely determine cable quilt when cable data once changing
Position is stolen, and by information theft fast notification to engineering staff and alarm, is conducive to crack burglary.
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 (9)
1. a kind of power cable burglary-resisting system, which is characterized in that including anti-theft monitoring system and alarm system, the antitheft prison
Examining system and alarm system communicate to connect, and the anti-theft monitoring system includes that oscillation wave generates unit, tested cable (8), control
System switch (5) and display control unit (1), the equal three-phase in described tested cable (8) both ends are shorted, and the oscillation wave generates single
First to be electrically connected with tested cable (8), it is successively electric that the oscillation wave generates unit, control switch (5) and display control unit (1)
Connection.
2. a kind of power cable burglary-resisting system according to claim 1, which is characterized in that the oscillation wave generates unit
Including power supply (2), equivalent capacity (3) and inductance (4), the power supply (2), equivalent capacity (3), inductance (4) and tested cable
(8) it is sequentially connected electrically.
3. a kind of power cable burglary-resisting system according to claim 2, which is characterized in that the power supply (2) is 0-
The DC power supply of 36kV.
4. a kind of power cable burglary-resisting system according to claim 1, which is characterized in that it further include test circuit, it is described
Test circuit include the partial pressure unit electrically in parallel with tested cable (8).
5. a kind of power cable burglary-resisting system according to claim 4, which is characterized in that the partial pressure unit includes phase
The high voltage unit (6) and low voltage unit (7) being mutually electrically connected, the high voltage unit (6) is by first resistor (61) and first capacitor
(62) it composing in parallel, the low voltage unit (7) is composed in parallel by second resistance (71) and the second capacitor (72), and described first
The resistance value of resistance (61) is the 10 of the resistance value of second resistance (71)4Times, the capacitance of second capacitor (72) is the
The 10 of the capacitance of one capacitor (62)4Times.
6. a kind of power cable burglary-resisting system according to claim 5, which is characterized in that further include the first operational amplifier
(10), the high voltage unit (6), the first operational amplifier (10) and display control unit (1) are sequentially connected electrically.
7. a kind of power cable burglary-resisting system according to claim 5 or 6, which is characterized in that further include that the second operation is put
Big device (11), filter (12) and PD coupling unit (9), the low voltage unit (7), PD coupling unit (9), the second operation are put
Big device (11), filter (12) and display control unit (1) are sequentially connected electrically, PD coupling unit (9) ground connection.
8. a kind of power cable theft preventing method, which is characterized in that the anti-theft monitoring system as claimed in claim 1 to 7 is utilized,
With 5 seconds for interval generate oscillation wave, to oscillation wave return information make analysis, by analysis result obtain cable mid head,
Cable termination range information is compared with preset value, determines whether power cable parameter changes；
If oscillation wave return information can produce when cable is truncated, causes cable data to change by other conductors short circuit situation
Raw significant change, is computed available other range informations in addition to cable mid head, terminal, then may determine that cable data
It changes, cable is truncated or is shorted by external force, the alarm system triggering actuation of an alarm, according to the change of calculated cable data
Dynamic point reports and submits and the specified place that cable is stolen occurs at a distance from live end.
9. a kind of power cable theft preventing method according to claim 8, which is characterized in that before oscillation wave generates, control is opened
It closes (5) to disconnect, DC power supply boosts to preset value, to equivalent capacity (3) charging of inductance (4), tested cable (8)；It has charged
Cheng Hou, display control unit (1) control control switch (5) are closed, and resonance occurs for the circuit LC that inductance capacitance is formed, and generate damping
Oscillation wave；Partial pressure unit is shown on display control unit (1) for testing oscillating wave voltage curve；It is reflected using traveling wave
The calculating to cable termination distance, cable mid head distance may be implemented in method；
Velocity of EM-waves is determining in conductor, it is assumed that velocity of wave v, and oscillation wave generation time is t1, the total n electricity of this section of cable
Cable medial head, it is t2 that oscillation wave, which reflects time of return by first cable mid head, is reflected by second cable mid head
Time of return is t3, and it is tn+ by cable termination time of return that reflecting time of return by n-th of cable mid head, which is tn+1,
2, then first cable mid head is apart from live end distance are as follows: L1=v* (t2-t1)/2；N-th of cable mid head distance pressurization
Hold distance are as follows: Ln=v* (tn+1-t1)/2；Total cable length are as follows: L=v* (tn+2-t1)/2；
And total cable length, each cable mid head according to live end distance be in cabling process it is known therefore above-mentioned each
Time should also be as being one-to-one with known distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377475.5A CN110047234A (en) | 2019-05-07 | 2019-05-07 | A kind of power cable burglary-resisting system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910377475.5A CN110047234A (en) | 2019-05-07 | 2019-05-07 | A kind of power cable burglary-resisting system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110047234A true CN110047234A (en) | 2019-07-23 |
Family
ID=67281143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910377475.5A Pending CN110047234A (en) | 2019-05-07 | 2019-05-07 | A kind of power cable burglary-resisting system and method |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1508352A (en) * | 1975-01-17 | 1978-04-26 | Electricity Council | Cable fault location |
| CN102013152A (en) * | 2010-10-29 | 2011-04-13 | 山东泰华电讯有限责任公司 | Cable anti-theft system |
| CN103499778A (en) * | 2013-09-26 | 2014-01-08 | 国家电网公司 | Method for evaluating insulation performance of power cable in stage with voltage being 35kV or below 35kV |
| CN106327769A (en) * | 2016-08-22 | 2017-01-11 | 天通精电新科技有限公司 | Cable antitheft device and cable antitheft method of wireless sensor network intelligent street lamp system |
| CN209674480U (en) * | 2019-05-07 | 2019-11-22 | 广东电网有限责任公司 | A kind of power cable burglary-resisting system |
-
2019
- 2019-05-07 CN CN201910377475.5A patent/CN110047234A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1508352A (en) * | 1975-01-17 | 1978-04-26 | Electricity Council | Cable fault location |
| CN102013152A (en) * | 2010-10-29 | 2011-04-13 | 山东泰华电讯有限责任公司 | Cable anti-theft system |
| CN103499778A (en) * | 2013-09-26 | 2014-01-08 | 国家电网公司 | Method for evaluating insulation performance of power cable in stage with voltage being 35kV or below 35kV |
| CN106327769A (en) * | 2016-08-22 | 2017-01-11 | 天通精电新科技有限公司 | Cable antitheft device and cable antitheft method of wireless sensor network intelligent street lamp system |
| CN209674480U (en) * | 2019-05-07 | 2019-11-22 | 广东电网有限责任公司 | A kind of power cable burglary-resisting system |
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