CN201163285Y - Anti-electricity theft supervisory system - Google Patents
Anti-electricity theft supervisory system Download PDFInfo
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- CN201163285Y CN201163285Y CNU2008200038244U CN200820003824U CN201163285Y CN 201163285 Y CN201163285 Y CN 201163285Y CN U2008200038244 U CNU2008200038244 U CN U2008200038244U CN 200820003824 U CN200820003824 U CN 200820003824U CN 201163285 Y CN201163285 Y CN 201163285Y
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Abstract
The utility model provides an electricity-stealing prevention supervision system for an electric energy metering device. The supervision system consists of a monitoring terminal device and a system management center. The monitoring terminal device which comprises a signal acquisition box for sampling of a monitoring terminal and a data processing box for data processing of the monitoring terminal is connected with the electric energy metering device through a splicing device. The system management center comprises a system front-end processor and a data processing device. A signal acquisition circuit of the signal acquisition box comprises a voltage monitoring circuit, a current monitoring circuit, a short-circuit current monitoring circuit, a voltage phase sequence monitoring circuit, a current phase sequence monitoring circuit, and a current and voltage homophase discrimination circuit which can analyze a detected signal to determine whether a wiring mistake happens. The system can more completely prevent various wiring electricity-stealing methods with the functions of automatic analysis and alarm, thereby preventing electricity-stealing maximally.
Description
Technical field
What the utility model was related is a kind of online supervision system that can take precautions against enforcement stealing on electric energy measurement instrument and auxiliary equipment thereof.
Background technology
Electric energy measurement instrument (watt-hour meter) in metering process, its connection terminal or its auxiliary equipment (voltage transformer pt, current transformer CT) if on wiring incorrect, will cause electric energy metrical loss.Reaction on induction meter is slow-speed, do not change or reverse.That is to say that want to make electric energy measurement instrument accurately to measure power consumption, the most important condition is exactly that the wiring that will guarantee electric energy measurement instrument and auxiliary equipment thereof is correctly.And some lawless persons pass through people's wiring order of electric power meter for a change, and electric energy measurement instrument and auxiliary equipment thereof are under the state of false wiring, make electric energy measurement instrument produce wrong variable, thereby reach the purpose of stealing.
Allly belong to utilization to watt-hour meter and accessory CT (metering Current Transformer) thereof and PT (metering voltage transformer (VT)) implementation mistake wiring, all electricity filching behaviors that carried out are called the technology stealing.The technology stealing can be divided into three major types:
1) reaches the stealing purpose by change voltage circuit measurement parameter and be called the voltage-type stealing;
2) reach the stealing purpose by change current return measurement parameter and be called the current mode stealing;
3) by changing voltage phase sequence, or the electric current phase sequence, or voltage and electric current homophase corresponding relation reach the stealing purpose and are called the stealing of phase angle type.
By analysis with statistics, directly access type individual event watt-hour meter has 15 kinds of error connection stealing electricity methods, there are 21 kinds of stealing electricity methods in individual event watt-hour meter through the CT access type, and the error connection of six kinds of three phase watt-hour meters can reach 1200 respectively to kind more than 17000, and wherein most error connections may be used to stealing.It is emphasized that any error connection, electric energy metrical is increased.Have only indivedual several error connections under given conditions, the metering when understanding with normal wiring comes to the same thing.
In order to solve the problem of utilizing false wiring of electric energy metering equipment to carry out stealing, people study for a long period of time.For the voltage-type stealing, as methods such as open circuit, dividing potential drops, existing corresponding at present product comes out.Played very big effect to taking precautions against the voltage-type stealing.But, how to take precautions against electric current and the stealing of phase angle type, also there is not any good method up to now.Thus, anti-theft electricity technology now also just is in this level.
The current mode stealing is to be difficult to very much take precautions against.But by the most a kind of stealing electricity method of extensive employing.This mainly is because this stealing electricity method is the most simple and easy.As short circuit, shunting, open a way, stride methods such as table, a fiery ground.And the main direction of such stealing as its research all will be taken precautions against by all watt-hour meter manufacturing firms.But all do not obtain for a long time to break through.
For the stealing of phase angle type,, still there is not the instrument of the anti-phase angle type stealing that the comprehensively long-term online supervision of function uses so far because its wiring kind is extremely various.
The electron watt-hour meter of widespread use has at present had some anti-stealing electricity functions.As under-voltage demonstration, phase shortage demonstration, outage timing, the demonstration of voltage phase sequence mistake etc.For single-phase watt-hour meter, exchange with electric current turnover line and exchange this two kinds of stealing electricity methods owing to adopted absolute value circuit can also take precautions against the high low side of voltage.Yet its anti-stealing electricity function is still comprehensive inadequately.Such as, the easiest to operation, use important stealing electricity methods such as maximum short-circuit current coils (U type method), electric current phase sequence mistake, electric current and voltage phase sequence be not corresponding and can not take precautions against.
That existing electric energy measurement instrument has is single-phase, phase three-wire three and three kinds of metering methods of three-phase and four-line, and existing a variety of anti-theft electricity technologies only are applicable to single-phase and the three-phase and four-line instrument.Because of and, anti-stealing electricity function is also all comprehensive inadequately.And for the phase three-wire three electric energy measurement instrument, anti-anti-theft electricity technology is just weak more.
Summary of the invention
In order to solve at present in the anti-theft electricity technology field problem of anti-electricity-theft device insufficiency face.The purpose of this utility model is to provide a kind of and can takes precautions against on electric energy measurement instrument and auxiliary equipment thereof comprehensively, utilizes false wiring to implement the observation system of stealing.And be applicable to single-phase, three-phase and four-line and phase three-wire three electric energy measurement instrument.
The purpose of this utility model is achieved through the following technical solutions: the utility model proposes a kind of anti-electricity-theft observation system that is used for electric energy measurement instrument, described observation system comprises monitoring terminal set and system management center two parts composition, wherein
Described monitoring terminal set comprises and is used to supervise the signals collecting box of terminal sampling and is used to supervise the data processing box that terminal data is handled, and links together by plug assembly with electric energy measurement instrument;
Described system management center comprises system's front end processor and data processing equipment;
The signal acquisition circuit of described signals collecting box comprises electric voltage observation circuit, current monitoring circuit, short-circuit current observation circuit, voltage phase sequence observation circuit, electric current phase sequence observation circuit, electric current and the voltage homophase judging circuit that is arranged in the electric power meter measurement loop;
Described data processing box has data processing circuit, is connected with described signal acquisition circuit, and the signal that the acknowledge(ment) signal Acquisition Circuit collects is analyzed above-mentioned detection signal, has determined whether that wiring error takes place, thereby has determined whether that wiring error takes place.When judging wrong wiring situation and take place, error message is sent on the receiver of system platform.
Described system front end processor comprises signal receiving device, realizes the exchanges data between observation system terminating machine and the system management center.Described sender unit and signal receiving device are the gsm wireless communication modules.This gsm wireless communication module utilizes the mode of GSM public network with short message, will detect data and warning message sends to signal receiving device.
Described data processing equipment comprises data converting circuit, data-switching is become to meet the data layout of computing machine requirement; Data transmission circuit is transferred to translation data on the computing machine; Data presentation device shows the data that receive; The memory circuit of data is finished storage, inquiry, printing and the output of data.
Described observation system terminating machine and electric energy measurement instrument connecting portion are provided with the tamper warning device.The tamper warning device comprises the warning circuit that is arranged in the data processing box and the coupling arrangement between data processing box and the electric energy measurement instrument.Coupling arrangement is made up of lead sealing screw, wire rope, lead sealing, and described wire rope utilizes a clip to be wrapped on the described lead sealing screw, and locks with lead sealing.Also be provided with the bottom on the described data processing box and have a fixed bar that solidifies glue, described curing is gluing to be connected on the fixedly metope of electric energy measurement instrument.
So described monitoring terminal set adopts circuit and battery to supply power with double circuit, after monitoring terminal was by illegal the dismounting, sense terminals still can operate as normal.
In sum, observation system of the present utility model is compared with existing anti-theft electricity technology, can more comprehensively prevent various wiring stealing modes, also has automatic analysis and warning function simultaneously.Therefore, can take precautions against the generation of electricity filching behavior to greatest extent.We can say, the utlity model has comprehensively, safety, reliable, a large amount of characteristics of saving to the anti-electricity-theft manpower and materials that drop into.
Description of drawings
Figure 1A and Figure 1B are the signals collecting box of the utility model observation system and the assembling synoptic diagram of watt-hour meter;
Fig. 2 A and Fig. 2 B are the signals collecting box of the utility model observation system and the assembling synoptic diagram of data processing box;
Fig. 3 is the schematic network structure of the utility model observation system;
Fig. 4 is the electrical principle block diagram of the utility model observation system terminating machine;
Fig. 5 is the circuit diagram of current sampling circuit;
Fig. 6 is the circuit diagram of voltage sample circuit;
Fig. 7 is the voltage phase sequence decision circuitry;
Fig. 8 is the electric current sequence judging circuit;
Fig. 9 voltage, electric current homophase decision circuitry;
Figure 10 is the short circuit current decision circuitry.
Among the figure:
1 watt-hour meter, 2 data processing boxes
3 signals collecting boxes, 4 terminal sockets
5 contact pins, 6 pins
7 jacks, 8 sender units
9 signal receiving devices, 10 system's front end processors
11 control data corporations, 12 clips
13 lead sealings, 14 wire rope
15 solidify glue 16 ammeters lid
17 lead sealing screws
Embodiment
Be described further below in conjunction with accompanying drawing with to the utility model.
Fig. 1, Fig. 2 are respectively the installation and the bulk-breaking synoptic diagram of the utility model observation system terminal.It comprises watt-hour meter 1 (being the terminal electric energy measuring equipment), is used to supervise the signals collecting box 3 of terminal sampling, is used to supervise the data processing box 2 that terminal data is handled.
Because the electric energy measurement instrument self of widespread usage does not possess anti-electricity-theft function comprehensively at present, if adopt separate type to install, can make the stealing people walk around anti-electricity-theft device easily, anti-stealing electricity function was lost efficacy.
Figure 1A and Figure 1B are the signals collecting box of the utility model observation system and the assembling synoptic diagram of watt-hour meter, and Fig. 2 A and Fig. 2 B are the signals collecting box of the utility model observation system and the assembling synoptic diagram of data processing box.As shown in the figure, the pin 6, the jack 7 that are provided with by sidepiece between watt-hour meter 1 of the present utility model and the signals collecting box 3 link to each other, and after the grafting, wire rope 14 utilizes a clip 12 to be wrapped on the described lead sealing screw 17, and lock with lead sealing 13.Then data processing box 2 is plugged in the signals collecting box 3 lip-deep contact pins 5 by socket 4.Observation system terminating machine and watt-hour meter connecting portion are provided with the tamper warning device, and the tamper warning device comprises the warning circuit that is arranged in the data processing box.Also be provided with the bottom on the described data processing box and have a fixed bar that solidifies glue, described curing is gluing to be connected on the fixedly metope of electric energy measurement instrument.
This tight connected mode then can hide the connection terminal on the former electric energy measurement instrument fully, makes the abnormal operation personnel can't touch the connection terminal of measuring instrument.And be exposed to the terminal that outer people can touch, all will be subjected to the detection of monitoring terminal.If touch the connection terminal of measuring instrument, monitoring terminal can only be removed, still, if there is this situation to take place, sense terminals will be reported to the police to system platform.Thereby can avoid various potential safety hazards effectively.
Fig. 3 is the schematic network structure of the utility model observation system.The supervision terminal that is made of signals collecting box 3 and data processing box 2 among the figure is to cooperate installation with the mode of watt-hour meter 1 by as depicted in figs. 1 and 2, is on-site terminal equipment.System's front end processor 10 and control data corporation 11 construction system administrative center platforms are installed and used very convenient; The supervision terminal also is provided with sender unit 8, and system's front end processor 10 is provided with the signal receiving device 9 that is complementary, the signal of signal receiving device 9 received signal emitters 8, and be sent to system's front end processor 10 and handle.Data after the processing send to control data corporation by serial ports.Control data corporation is used for the storage of data, management, and inquiry is printed, and the supervision terminal is carried out the setting of parameter.Consider that this system management center is that just to need communication, quantity of information when event occurs be not very big, therefore, this system architecture can be held 5000～20000 station terminal equipment.The utility model adopts the radio SMS mode to transmit data, utilizes the GSM net to carry out communication.
Fig. 4 is the electrical principle block diagram of the utility model observation system terminal device.It has comprised 8 kinds of parallel decision circuitry that are provided with, and is respectively: current return monitoring (referring to Fig. 5), voltage circuit monitoring (referring to Fig. 6), voltage phase sequence judge that (referring to Fig. 7), electric current phase sequence judge that (referring to Fig. 8), voltage and electric current homophase are judged (referring to Fig. 9), short circuit of current loop judgement (referring to Figure 10), the phenomenon that produced at different stealing mode is carried out comprehensive monitoring.
Wherein, current return observation circuit shown in Figure 5 is used to monitor incidents such as zero current, open circuit, a fiery ground; The short circuit of current loop observation circuit is used for monitoring current loop short circuit event.Pick up current signal by current transformer,, obtain " square wave " of current signal by amplifying shaping.So just finished the sampling of current signal.
Incidents such as that voltage circuit observation circuit shown in Figure 6 is used to monitor is under-voltage, phase shortage.By being connected on the voltage transformer (VT) pick-up voltage signal in the voltage circuit, after the amplifying circuit prosperity, voltage signal is shaped as " square wave ".So just finished voltage sample.
Voltage phase sequence decision circuitry shown in Figure 7 is used for the phase sequence error event between monitoring voltage.Electric current sequence judging circuit shown in Figure 8 is used for the phase sequence error event between monitoring current.After utilizing shaping, " square wave " signal of voltage and current is an input signal, is input to the respective input of " d type flip flop ", and when voltage or electric current phase sequence were correct, trigger had signal output, and when voltage or electric current phase sequence mistake, trigger does not have signal output.Therefore, can judge curtage phase sequence mistake whether occurred.
Fig. 9 is used to judge that electric current and voltage phase sequence are not corresponding.To at once, the waveform of electric current and voltage overlaps at electric current and voltage phase sequence.When not corresponding wrong of phase sequence appears in electric current and voltage, the waveform of electric current and voltage will not overlap.Thereby can judge the corresponding mistake of phase sequence whether occurred.
Figure 10 is the short circuit current observation circuit.Its principle of work is to add high-frequency sasser in current return.When not having short circuit current, high-frequency sasser will exist always.Yet in case the short circuit current phenomenon occurs, high-frequency sasser will disappear.Therefore, can judge whether to occur short circuit current whereby.
Because terminal is the power supply mode that has adopted circuit and battery to power simultaneously, so transfer at electrical network under the situation of electricity, testing circuit can be worked as usual.Therefore, even under the situation of electric network power-fail, if there is illegal dismounting situation to take place, terminal equally can send to information the system management center.
In fact Fig. 5 can be called signal pickup circuit to Figure 10.And the signal that all pick up all will be sent to processor and carry out analysis and judgement.When processor is judged the error situation generation, will control gsm module, error message is sent to monitoring platform.Gsm module is exactly a wireless transport module.The every technical standard that meets mobile phone.Allow to use mobile public network to carry out the transmission of data.Gsm module is to pass through the serial data mouth by CPU, and order is controlled to its transmission AT.By it being sent different AT orders, can control its transmission or reception " short message ".And sense terminals utilizes " short message " that error message is sent on the system platform.Simultaneously, the system platform receiver also is by gsm module, receives information that sense terminals sends.Just finally will be with these data, converting computing machine to is other data layout, these data is sent on the computing machine again.
Claims (10)
1. an anti-electricity-theft observation system that is used for electric energy measurement instrument is characterized in that, described observation system comprises monitoring terminal set and system management center two parts composition, wherein
Described monitoring terminal set comprises and is used to supervise the signals collecting box of terminal sampling and is used to supervise the data processing box that terminal data is handled, and links together by plug assembly with electric energy measurement instrument;
Described system management center comprises system's front end processor and data processing equipment;
The signal acquisition circuit of described signals collecting box comprises electric voltage observation circuit, current monitoring circuit, short-circuit current observation circuit, voltage phase sequence observation circuit, electric current phase sequence observation circuit, electric current and the voltage homophase judging circuit that is arranged in the electric power meter measurement loop;
Described data processing box has data processing circuit, is connected with described signal acquisition circuit, and the signal that the acknowledge(ment) signal Acquisition Circuit collects is analyzed above-mentioned detection signal, has determined whether that wiring error takes place.
2. according to the anti-electricity-theft observation system of claim 1, it is characterized in that,
Described observation system terminating machine comprises sender unit, and described system front end processor comprises signal receiving device, realizes the exchanges data between observation system terminating machine and the system management center.
3. according to the anti-electricity-theft observation system of claim 2, it is characterized in that described sender unit and signal receiving device are the gsm wireless communication modules.
4. according to the anti-electricity-theft observation system of claim 3, it is characterized in that described gsm wireless communication module utilizes the mode of GSM public network with short message, will detect data and warning message sends to signal receiving device.
5. according to the anti-electricity-theft observation system of claim 1, it is characterized in that described data processing equipment comprises data converting circuit, data-switching is become to meet the data layout of computing machine requirement; Data transmission circuit is transferred to translation data on the computing machine; Data presentation device shows the data that receive; The memory circuit of data is finished storage, inquiry, printing and the output of data.
6. according to the anti-electricity-theft observation system of claim 1, it is characterized in that described observation system terminating machine and electric energy measurement instrument connecting portion are provided with the tamper warning device.
7. according to the anti-electricity-theft observation system of claim 1, it is characterized in that described tamper warning device comprises the warning circuit that is arranged in the data processing box and the coupling arrangement between data processing box and the electric energy measurement instrument.
8. according to the anti-electricity-theft observation system of claim 6, it is characterized in that described coupling arrangement is made up of lead sealing screw, wire rope, lead sealing, described wire rope utilizes a clip to be wrapped on the described lead sealing screw, and locks with lead sealing.
9. according to the anti-electricity-theft observation system of claim 1, it is characterized in that described data processing box is provided with the bottom and has a fixed bar that solidifies glue, described curing is gluing to be connected on the fixedly metope of electric energy measurement instrument.
10. according to the anti-electricity-theft observation system of claim 1, it is characterized in that described monitoring terminal set adopts circuit and battery to supply power with double circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200038244U CN201163285Y (en) | 2008-02-28 | 2008-02-28 | Anti-electricity theft supervisory system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200038244U CN201163285Y (en) | 2008-02-28 | 2008-02-28 | Anti-electricity theft supervisory system |
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| Publication Number | Publication Date |
|---|---|
| CN201163285Y true CN201163285Y (en) | 2008-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200038244U Expired - Fee Related CN201163285Y (en) | 2008-02-28 | 2008-02-28 | Anti-electricity theft supervisory system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140740A (en) * | 2010-10-06 | 2013-06-05 | 阿尔卡特朗讯公司 | Detection of loss in electrical distribution networks |
| CN109596872A (en) * | 2019-02-20 | 2019-04-09 | 上海艾临科智能科技有限公司 | Portable detection device of opposing electricity-stealing |
-
2008
- 2008-02-28 CN CNU2008200038244U patent/CN201163285Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103140740A (en) * | 2010-10-06 | 2013-06-05 | 阿尔卡特朗讯公司 | Detection of loss in electrical distribution networks |
| CN103140740B (en) * | 2010-10-06 | 2016-01-06 | 阿尔卡特朗讯公司 | Loss in electric power distribution network or the detection of fault |
| CN109596872A (en) * | 2019-02-20 | 2019-04-09 | 上海艾临科智能科技有限公司 | Portable detection device of opposing electricity-stealing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081210 Termination date: 20130228 |