CN102262807A - Anti-theft device of power transformer - Google Patents
Anti-theft device of power transformer Download PDFInfo
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- CN102262807A CN102262807A CN 201110188536 CN201110188536A CN102262807A CN 102262807 A CN102262807 A CN 102262807A CN 201110188536 CN201110188536 CN 201110188536 CN 201110188536 A CN201110188536 A CN 201110188536A CN 102262807 A CN102262807 A CN 102262807A
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- address code
- code
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- theft device
- power transformer
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Abstract
The invention discloses an anti-theft device of a power transformer. The anti-theft device comprises a transmitter and a receiver, wherein the transmitter comprises a first coupling circuit, an identity identification code generator and a trigger; the identity identification code generator and the trigger are respectively connected with the first coupling circuit; the receiver comprises a second coupling circuit, a differential reverse-phase filter, a code discriminator and an alarm, which are sequentially connected; and the differential reverse-phase filter is also connected with a reverse-phase shaper. In the scheme provided by the invention, the transmitter can be arranged on the power transformer, the receiver is arranged on a control console of a transformer substation, and communication between the transmitter and the receiver is finished through a power line, so the cost of anti-theft equipment is reduced, and all transformers which are connected with the transformer substation are in an anti-theft coverage range. Therefore, the anti-theft device of the power transformer has the advantages of low anti-theft cost, wide coverage and the like.
Description
Technical field
The present invention relates to the power transformer field, in particular, relate to the anti-theft device of power transformer.
Background technology
Transformer station is the assembly place of transmission and disttrbution, and it is the flow direction of voltage of transformation in the electric system, acceptance and distribution electric energy, control electric power and the electric power facility of adjusting voltage, and it gets up by the grid contact of its transformer with each step voltage.
A lot of transformers that link to each other with transformer station all are arranged on the field, so the supervision effect is undesirable, open-air transformer is often stolen.So the staff is arranged on open-air transformer with all and adds trigger and communication apparatus.
When the people stole open-air transformer, trigger will be controlled communication apparatus and send warning message to the control desk of transformer station, and so just the police strength that can distribute is timely nearby arrested work.
In research and practice process to prior art, the present inventor finds that there is following problem in prior art:
Communication apparatus need could send warning message by the server of communication operator.Communication apparatus can be sent to warning message and transmission address the server of communication operator earlier, and server receives this warning message and sends the address, and server is again according to sending the control desk that the address is sent to warning message the transformer station of appointment.
Because the maintenance cost of server is higher, thus indirect raising antitheft cost; And, the signal of certain areas a little less than, communication apparatus may and send the address with warning message and be sent to server, the control desk of transformer station also just can't be recognized the ruuning situation of transformer, so for the more weak area of signal, trigger and communication apparatus just can't play the effect of warning, so the coverage of existing burglary-resisting installation is comprehensive inadequately.
Summary of the invention
In view of this, purpose of design of the present invention is, a kind of anti-theft device of power transformer is provided, and reducing antitheft cost, and guarantees that antitheft coverage is more comprehensive.
The embodiment of the invention is achieved in that
A kind of anti-theft device of power transformer comprises transmitter and receiver;
Described transmitter comprises first coupled circuit and the identification code generator and the trigger that are connected with described first coupled circuit respectively;
Described identification code generator is used to produce a unique address code and this address code is sent to first coupled circuit;
Described trigger is used in scheduled time slot, and the exchange current that will have described address code is sent on the described receiver by described first coupled circuit and power circuit;
Described receiver comprises second coupled circuit, difference inverse filter, code discriminator and the alarm that connects successively, and described difference inverse filter also is connected with anti-phase reshaper;
Described anti-phase reshaper is used for converting exchange current to the backward crossover time-dependent current, and described backward crossover time-dependent current is sent to described difference inverse filter;
Described difference inverse filter, be used for having the exchange current of described address code by the power circuit and the second coupled circuit receiving belt, and receive described backward crossover time-dependent current, will have the exchange current and anti-phase the offseting of described backward crossover time-dependent current of described address code again, obtain described address code;
Described code discriminator is used to read described address code, and described address code is sent to described alarm;
Described alarm, when being used in Preset Time, not receiving the address code that code discriminator sends, the described address code that do not receive of output and giving the alarm then.
Preferably, in the anti-theft device of above-mentioned power transformer, described transmitter also comprises power amplifier;
Described first coupled circuit is connected with described trigger with described identification code generator respectively by described power amplifier.
Preferably, in the anti-theft device of above-mentioned power transformer, described receiver also comprises reception amplifier;
Described difference inverse filter is connected with described code discriminator by described reception amplifier.
Preferably, in the anti-theft device of above-mentioned power transformer, described trigger is specially over-zero trigger;
Described over-zero trigger, be used for after the one-period of exchange current finishes, it is secondary that the exchange current that will have a described address code is delivered to power transformer by described first coupled circuit, is sent on the described receiver by power circuit thereby cross over power transformer.
Preferably, in the anti-theft device of above-mentioned power transformer, described identification code generator is specially dual-tone multifrequency module generator;
Described dual-tone multifrequency module generator is used to produce a unique four figures address code and this four figures address code is sent to first coupled circuit.
Preferably, in the anti-theft device of above-mentioned power transformer, described receiver also comprises the demonstration chart board that is connected with described code discriminator;
Described demonstration chart board when being used for not receiving the address code of code discriminator transmission in Preset Time, then demonstrates the position at the transformer place of described address code correspondence.
Preferably, in the anti-theft device of above-mentioned power transformer, the quantity of described transmitter is a plurality of.
Compared with prior art, the technical scheme that provides of present embodiment has the following advantages and characteristics:
In scheme provided by the invention, transmitter can be arranged on the transformer, receiver is arranged on the control desk of transformer station, communicating by letter between transmitter and the receiver finished by power circuit, so reduced the cost of burglary-resisting installation, and all transformers that are connected with transformer station are all in antitheft coverage, and therefore, it is low and cover advantages such as wide that the present invention has an antitheft cost.
Description of drawings
In order to be illustrated more clearly in the present invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the module diagram of the transmitter of anti-theft device provided by the present invention;
Fig. 2 is the module diagram of the receiver of anti-theft device provided by the present invention;
Fig. 3 is the module diagram of the transmitter of another kind of anti-theft device provided by the present invention;
Fig. 4 is the module diagram of the receiver of another kind of anti-theft device provided by the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of anti-theft device of power transformer, comprises transmitter and receiver; Transmitter comprises first coupled circuit and the identification code generator and the trigger that are connected with first coupled circuit respectively; Receiver comprises second coupled circuit, difference inverse filter, code discriminator and the alarm that connects successively, and the difference inverse filter also is connected with anti-phase reshaper.It is low and cover advantages such as wide that the anti-theft device of above-mentioned power transformer has an antitheft cost.Because there is multiple mode in the specific implementation of the anti-theft device of above-mentioned power transformer, is elaborated below by specific embodiment:
See also Fig. 1 and shown in Figure 3, Fig. 1 and shown in Figure 3 be a kind of anti-theft device of power transformer, comprise transmitter 1 and receiver 2;
Wherein, identification code generator 11 is used to produce a unique address code and this address code is sent to first coupled circuit 12;
Difference inverse filter 22 is used for receiving the exchange current that has address code by the power circuit and second coupled circuit 21, and receives the backward crossover time-dependent current, will have the exchange current of address code again and the backward crossover time-dependent current is anti-phase offsets the address acquisition sign indicating number;
Mention in the background technology,, so the supervision effect is undesirable, thereby cause open-air transformer often stolen, and existing anti-theft device has defectives such as cost height and limited coverage area because much the transformer that links to each other with transformer station all is arranged on the field.
In view of this, in Fig. 1 and embodiment shown in Figure 3, present embodiment provides a kind of anti-theft device, mainly comprise transmitter 1 and receiver 2, wherein, transmitter 1 is mainly used in being arranged on the open-air transformer, and receiver 2 is applied on the control desk of transformer station.At each a transmitter 1 is installed all above the open-air transformer, each transmitter 1 is connected with receiver 2 on being arranged on transformer station by power circuit, is arranged on all open-air transformers and has all obtained effective monitoring thereby make.When transformer was stolen, transmitter 1 can feed back to receiver 2 fast, so that can recognize timely the staff of the control desk of transformer station, so that police arrest activity fast.
See also Fig. 2 and shown in Figure 4, Fig. 2 and shown in Figure 4 be the anti-theft device of another kind of power transformer, comprise transmitter 3 and receiver 4;
Wherein, dual-tone multifrequency module generator 31 is used to produce a unique four figures address code and this four figures address code is sent to first coupled circuit 32;
Over-zero trigger 33 is used for after the one-period of exchange current finishes, and the exchange current that will have the four figures address code is sent on the receiver 4 by first coupled circuit 32 and power circuit;
Difference inverse filter 42, be used for receiving the exchange current that has the four figures address code by the power circuit and second coupled circuit 41, and receive the backward crossover time-dependent current, will have the exchange current of four figures address code again and the backward crossover time-dependent current is anti-phase offsets, obtain the four figures address code;
Briefly introduce the principle of work of embodiment provided by the invention below:
It is auspicious that transmitter is installed in the low pressure of field electric transformer, use the power supply of low-pressure side power supply, its core is to adopt dual-tone multifrequency module generator to realize, the transformer platform district identity code of forming 4-digit number with dual-tone multifrequency module generator, wherein, preferably with the touch-tone signal frequency control in the 300-500HZ scope.Use over-zero trigger when power frequency 50HZ null value, be coupled to elementary high-pressure side, pass to receiver through lead by power transformer secondary.
Receiver is located at transformer station, by the secondary coil of main transformer mutual inductor, just can receive the exchange current with identity code.But since the identification coded signal of this exchange current a little less than, and flood easily and go out in various interference, so receiver is provided with the difference inverse filter, wherein, with the original power supply of transformer station, gather out a power frequency 50HZ current signal, remove to offset the exchange current that receives after anti-phase.The exchange current of identical like this sequential, because phase place is opposite separately, but amplitude is basic identical, just can cancel out each other, and the identity code of adding owing to do not exist in the original source current of transformer station, just can not be cancelled, and can be highlighted out on the contrary.Identity code after amplifying is delivered in the code discriminator, distinguishes.After confirming identity, deliver to corresponding alarm and show in the chart board that the demonstration chart board can send shows signal.The transmitter per minute is launched once, and receiver has 10 times fault-tolerance.Do not send alarm after promptly totally receiving correct signal 10 times.
Thus, the staff just can judge whether transformer is lost at a distance.After whole supply transformer platform sound zone system was all installed, the identity code in each district all was different, was presented on the demonstration chart board of transformer station just little green point, then became red flicker as alarm, and sent voice suggestion.
In sum, in embodiment provided by the invention, transmitter can be arranged on the transformer, receiver is arranged on the control desk of transformer station, communicating by letter between transmitter and the receiver finished by power circuit, thus reduced the cost of burglary-resisting installation, and all transformers that are connected with transformer station are all in antitheft coverage, therefore, to have an antitheft cost low and cover advantages such as wide in the present invention.
Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (7)
1. the anti-theft device of a power transformer is characterized in that, comprises transmitter and receiver;
Described transmitter comprises first coupled circuit and the identification code generator and the trigger that are connected with described first coupled circuit respectively;
Described identification code generator is used to produce a unique address code and this address code is sent to first coupled circuit;
Described trigger is used in scheduled time slot, and the exchange current that will have described address code is sent on the described receiver by described first coupled circuit and power circuit;
Described receiver comprises second coupled circuit, difference inverse filter, code discriminator and the alarm that connects successively, and described difference inverse filter also is connected with anti-phase reshaper;
Described anti-phase reshaper is used for converting exchange current to the backward crossover time-dependent current, and described backward crossover time-dependent current is sent to described difference inverse filter;
Described difference inverse filter, be used for having the exchange current of described address code by the power circuit and the second coupled circuit receiving belt, and receive described backward crossover time-dependent current, will have the exchange current and anti-phase the offseting of described backward crossover time-dependent current of described address code again, obtain described address code;
Described code discriminator is used to read described address code, and described address code is sent to described alarm;
Described alarm, when being used in Preset Time, not receiving the address code that code discriminator sends, the described address code that do not receive of output and giving the alarm then.
2. the anti-theft device of power transformer according to claim 1 is characterized in that, described transmitter also comprises power amplifier;
Described first coupled circuit is connected with described trigger with described identification code generator respectively by described power amplifier.
3. the anti-theft device of power transformer according to claim 1 is characterized in that, described receiver also comprises reception amplifier;
Described difference inverse filter is connected with described code discriminator by described reception amplifier.
4. the anti-theft device of power transformer according to claim 1 is characterized in that, described trigger is specially over-zero trigger;
Described over-zero trigger, be used for after the one-period of exchange current finishes, it is secondary that the exchange current that will have a described address code is delivered to power transformer by described first coupled circuit, is sent on the described receiver by power circuit thereby cross over power transformer.
5. the anti-theft device of power transformer according to claim 1 is characterized in that, described identification code generator is specially dual-tone multifrequency module generator;
Described dual-tone multifrequency module generator is used to produce a unique four figures address code and this four figures address code is sent to first coupled circuit.
6. the anti-theft device of power transformer according to claim 1 is characterized in that, described receiver also comprises the demonstration chart board that is connected with described code discriminator;
Described demonstration chart board when being used for not receiving the address code of code discriminator transmission in Preset Time, then demonstrates the position at the transformer place of described address code correspondence.
7. the anti-theft device of power transformer according to claim 1 is characterized in that, the quantity of described transmitter is a plurality of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188536 CN102262807A (en) | 2011-07-06 | 2011-07-06 | Anti-theft device of power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110188536 CN102262807A (en) | 2011-07-06 | 2011-07-06 | Anti-theft device of power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102262807A true CN102262807A (en) | 2011-11-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110188536 Pending CN102262807A (en) | 2011-07-06 | 2011-07-06 | Anti-theft device of power transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825335A (en) * | 2021-09-10 | 2021-12-21 | 扬州中宏电力科技有限公司 | Remote anti-theft transformer rectifier based on Internet of things |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001229A1 (en) * | 1985-08-14 | 1987-02-26 | Dunn, Jeffrey | Security device |
| JPH06266977A (en) * | 1993-03-15 | 1994-09-22 | Nippon Signal Co Ltd:The | Equipment burglar preventing device |
| CN201716802U (en) * | 2010-05-28 | 2011-01-19 | 黄传易 | Anti-theft alarm device for power line transformer |
| CN101976491A (en) * | 2010-10-18 | 2011-02-16 | 江苏省电力公司宜兴市供电公司 | Power equipment burglar alarm |
| CN202042024U (en) * | 2011-05-31 | 2011-11-16 | 吉林省电力有限公司白城供电公司 | On-line monitoring and protecting device for transformer |
-
2011
- 2011-07-06 CN CN 201110188536 patent/CN102262807A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1987001229A1 (en) * | 1985-08-14 | 1987-02-26 | Dunn, Jeffrey | Security device |
| JPH06266977A (en) * | 1993-03-15 | 1994-09-22 | Nippon Signal Co Ltd:The | Equipment burglar preventing device |
| CN201716802U (en) * | 2010-05-28 | 2011-01-19 | 黄传易 | Anti-theft alarm device for power line transformer |
| CN101976491A (en) * | 2010-10-18 | 2011-02-16 | 江苏省电力公司宜兴市供电公司 | Power equipment burglar alarm |
| CN202042024U (en) * | 2011-05-31 | 2011-11-16 | 吉林省电力有限公司白城供电公司 | On-line monitoring and protecting device for transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825335A (en) * | 2021-09-10 | 2021-12-21 | 扬州中宏电力科技有限公司 | Remote anti-theft transformer rectifier based on Internet of things |
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Application publication date: 20111130 |