CN2286881Y - Detection device for preventing from fraudulent use of electricity - Google Patents
Detection device for preventing from fraudulent use of electricity Download PDFInfo
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- CN2286881Y CN2286881Y CN 96226788 CN96226788U CN2286881Y CN 2286881 Y CN2286881 Y CN 2286881Y CN 96226788 CN96226788 CN 96226788 CN 96226788 U CN96226788 U CN 96226788U CN 2286881 Y CN2286881 Y CN 2286881Y
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- circuit
- current
- sampling
- output terminal
- electricity
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Abstract
The utility model discloses a detection device for preventing fraudulent use of electricity; the output terminals 1, 2 of a main current sampling circuit T1 and the output terminals 3, 4 of a branch current sampling summing circuit T2 are respectively connected with the input terminal of a current comparing discrimination circuit T3; the output terminals 5, 6 of a main circuit voltage sampling circuit T4 and the output terminals 5, 6 of a branch voltage sampling or logic circuit T5 are respectively connected with the input terminal of a voltage comparing discrimination circuit T6; the current comparing discrimination circuit T3 and the output terminals 7, 8 of the voltage comparing discrimination circuit T6 are respectively connected with an alarm display circuit T8. The utility model can continuously detect and compare the electric supply condition, can discover and find out electric larceny position in time and can accurately meter quantity of fraudulent use of electricity.
Description
The utility model belongs to the electrical technical field, relates in particular to a kind of novel anti-electricity-theft pick-up unit.
At present, electric power supply department generally all is the power consumption that adopts various types of watt-hour meter metering users.But the user who has takes the whole bag of tricks stealing, or electrical appliance is directly inserted transmission circuit, and its electricity consumption is measured without watt-hour meter; Or watt-hour meter taked various means, and it not being measured or few metering, thereby cause enormous economic loss to country, the power supply safety of electric system is subjected to very big influence, and electric power supply department is hard to guard against to this.There are many people that anti-electricity-theft problem has been carried out big quantity research, proposed many technical schemes.But, these schemes mostly are to adopt simple, clumsy mechanical hook-up, prevent that in very little scope electricity filching person from changing wiring, can not realize total system is continuously detected and quantitatively demonstration, thereby can not in time find stealing electricity phenomenon, more can not find out stealing position and quantity.
The purpose of this utility model will overcome the deficiency of above-mentioned prior art exactly, and providing a kind of can continuously detect and quantitatively demonstration electric power system, and can find out the novel anti-electricity-theft pick-up unit of stealing position.
The purpose of this utility model is achieved in that a kind of anti-electricity-theft pick-up unit, by main circuit current sample circuit T1, branch current sampling summing circuit T2, current ratio is than judging circuit T3, main circuit voltage sampling circuit T4, the branch voltage sampling " or " logical circuit T5, voltage ratio is formed than judging circuit T6 and alarm indication circuit T8, the output terminal 1 of main circuit current sample circuit T1,2 and the output terminal 3 of branch current sampling summing circuit T2,4 respectively with the input end 1 of current ratio than judging circuit T3,2,3,4 connect, the output terminal 5 of main circuit voltage sampling circuit T4,6 and branch voltage sampling " or " output terminal 5 of logical circuit T5,6 respectively with the input end 5 of voltage ratio than judging circuit T6,6 connect, and current ratio is than judging circuit T3 and the voltage ratio output terminal 7 than judging circuit T6,8 are connected to alarm indication circuit T8 respectively.
In order to realize the purpose of this utility model better, described branch current sampling summing circuit T2 comprises at least one transformer sampling element B
n, the primary and secondary coil winding-direction of each transformer sampling element is identical, and each secondary coil is connected to rectification circuit D after connecting in end to end mode
8～D
11
In order to realize the purpose of this utility model better, described branch current sampling summing circuit T2 comprises at least one current transformer sampling element L
n, the coil winding-direction of each current transformer sampling element is identical, after the parallel connection, is connected to rectification circuit D in the same way
8～D
11
In order to realize the purpose of this utility model better, described branch current sampling summing circuit T2 comprises at least one current transformer sampling element L
n, the coil winding-direction of each current transformer sampling element is identical, after connecting in end to end mode, is connected to rectification circuit D
8～D
11,
In order to realize the purpose of this utility model better, described branch voltage sampling " or " logical circuit T5 comprises at least one transformation rectification sample circuit E
n, the output diode D of each transformation rectification sample circuit
YnPositive pole join, constitute " or " logical circuit.
In order to realize the purpose of this utility model better, be provided with ic for energy metering T7, the output terminal 3 of the output terminal 1 of main circuit current sample circuit T1, branch current sample circuit T2 and the output terminal 5,6 of main circuit voltage sampling circuit T4 are connected to the input end 1,3,5,6 of ic for energy metering respectively.
In order to realize the purpose of this utility model better, described ic for energy metering T7 is by power multiplier G
17With electric energy integrator G
18Form power multiplier G
17Output terminal 11 be connected to electric energy integrator G
18Input end 11, at electric energy integrator G
18Output terminal 12,13 be connected to LCD LED.
Adopt the technical solution of the utility model, can electric current, the voltage condition of the main circuit of electric power system and Ge Zhi circuit continuously be detected and compare, in time find stealing electricity phenomenon, and can accurately measure, be convenient in time take measures institute's power-steeling quantity.Utilize the mancarried device of the technical program, also can find out the stealing position at the scene rapidly, in time prevent the stealing illegal activities, avoid resulting in greater loss, guarantee power supply safety to country.
Fig. 1 is the theory diagram of the utility model embodiment.
Fig. 2 is main circuit current sample circuit T1, the circuital current sampling summing circuit T2 of the utility model embodiment and the current ratio schematic diagram than judging circuit T3.
Fig. 3 a, b are respectively the branch current sampling summing circuit T2 schematic diagram that sensing element adopts two kinds of schemes of current transformer.
Fig. 4 be the utility model embodiment the sampling of three-circuit voltage sampling circuit T4, branch voltage " or " logical circuit T5 and voltage ratio be than the schematic diagram of judging circuit T6.
Fig. 5 is the schematic diagram of the utility model embodiment ic for energy metering T7.
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, in anti-electricity-theft pick-up unit of the present utility model, the output terminal 1,2 of main circuit current sample circuit T1 is connected with the input end 1,2,3,4 of current ratio than judging circuit T3 respectively with the output terminal 3,4 of branch current sampling summing circuit T2, the sampling of the output terminal 5,6 of main circuit voltage sampling circuit T4 and branch voltage " or " output terminal 5,6 of logical circuit T5 is connected with the input end 5,6 of voltage ratio than judging circuit T6 respectively, current ratio is connected to warning circuit T8 than judging circuit T3 and voltage ratio respectively than the output terminal 7,8 of judging circuit T5.The output terminal 3 of the output terminal 1 of main circuit current sample circuit T1, branch current sampling summing circuit T2 and the output terminal 5,6 of main circuit voltage sampling circuit T4 are connected to the input end 1,3,5,6 of ic for energy metering T7 respectively.
Referring to Fig. 2, main circuit current sample circuit T1 is by current transformer L
zWith bridge rectifier circuit D
1～D
4Form current transformer L
zBe installed on the live wire of main circuit.In branch current sampling summing circuit T2, transformer sampling element B
1～B
nPrimary coil and the current coil L of each user's watt-hour meter
Y1～L
YnSeries connection, the primary and secondary coil winding-direction of each transformer is identical, and each secondary coil is connected to bridge rectifier circuit D after connecting in end to end mode
8～D
11, transformer sampling element B
nNumber depend on user's meter current coil L
nNumber.The sampling element of branch current sampling summing circuit T2 also can adopt current transformer sampling element L
1～L
n, the coil winding-direction of each current transformer sampling element is identical, both in the same way after the parallel connection, is connected to rectification circuit D
8～D
11, shown in Fig. 3 a; After also can end to end mode connecting, be connected to rectification circuit D
8～D
11, shown in Fig. 3 b.Current ratio than judging circuit T3 mainly by operational amplifier G
1, resistance R
4And R
5, triode G
2Form.
Referring to Fig. 4, the main circuit voltage sampling circuit is by transformer E
zWith bridge rectifier circuit D
26～D
29Form.Branch voltage sampling " or " among the logical circuit T5, each transformation rectification sample circuit E
1～E
nThe transformer potential winding F by corresponding resistance and user's watt-hour meter respectively
1～F
nParallel connection, the output terminal of each transformation rectification sample circuit rectifier bridge respectively with diode D
Y1～D
YnNegative pole join, the positive pole of these diodes all is connected to the input end 5 of voltage ratio than judging circuit T6, constitute " or " logical circuit.Transformation rectification sample circuit E
nNumber depend on user's meter voltage coil F
nNumber.Voltage ratio than judging circuit T6 mainly by operational amplifier G
7, resistance R
51And R
52, triode G
8Form.
Referring to Fig. 5, in ic for energy metering, power multiplier G
17Output terminal 11 be connected to electric energy integrator G
18Input end 11, at electric energy integrator G
18Output terminal 12,13 be connected to LCD LED.
Narrate the principle of work of present embodiment below.
Main circuit current sample circuit T1 measures the current signal of main circuit, branch current sampling summing circuit T2 measures each user's current signal and they is stacked up, the output signal of T1 and T2 is delivered to current ratio respectively and is compared than judging circuit T3, if the output of T1 and T2 equates that then the output signal of T3 is zero; If whether through the taking place with electrical phenomena of watt-hour meter metering, then the output signal of T2 is less than the output signal of T1, thereby makes T3 that signal output be arranged, and drives alarm indication circuit T8, illustrates that the someone sneaks current on branch road.
Main circuit voltage sampling circuit T4 measures the voltage signal of main circuit, delivers to voltage ratio than judging circuit T6, the potential winding circuit F of each user's watt-hour meter
1～F
nBranch voltage sampling all just often, " or " each transformation rectification circuit E among the logical circuit T5
1～E
nThe output signal current potential higher, make the diode D of each output terminal
Y1～D
YnOppositely end.Potential winding circuit F when arbitrary user's watt-hour meter
nBe cut off or when sealing in impedor, then corresponding transformation rectification circuit E among the T5
nOutput signal current potential step-down, make the diode D of its output terminal
YnForward conduction, thus the current potential of T6 input end is pulled down, make the T6 output signal drive T8, also explanation has the people to sneak current.
The output signal of T1, T2 and T4 is delivered to power multiplier G among the ic for energy metering T7 respectively
17 Input end 1,3,5,6, the power output signal of generation is through integrator G
18After the Integral Processing, on LCD LED, demonstrate the power stealing amount.
Circuit T1, T3, T4, T6 and T8 in this anti-electricity-theft pick-up unit are made mancarried device, can carry out segmentation easily and detect, find out the stealing position quickly and accurately.
Claims (7)
1. anti-electricity-theft pick-up unit, it is characterized in that by main circuit current sample circuit T1, branch current sampling summing circuit T2, current ratio is than judging circuit T3, main circuit voltage sampling circuit T4, the branch voltage sampling " or " logical circuit T5, voltage ratio is formed than judging circuit T6 and alarm indication circuit T8, the output terminal 1 of main circuit current sample circuit T1,2 and the output terminal 3 of branch current sampling summing circuit T2,4 respectively with the input end 1 of current ratio than judging circuit T3,2,3,4 connect, the output terminal 5 of main circuit voltage sampling circuit T4,6 and branch voltage sampling " or " output terminal 5 of logical circuit T5,6 respectively with the input end 5 of voltage ratio than judging circuit T6,6 connect, and current ratio is than judging circuit T3 and the voltage ratio output terminal 7 than judging circuit T6,8 are connected to alarm indication circuit T8 respectively.
2. anti-electricity-theft pick-up unit according to claim 1 is characterized in that described branch current sampling summing circuit T2 comprises at least one transformer sampling element B
n, the primary and secondary coil winding-direction of each transformer sampling element is identical, and each secondary coil is connected to rectification circuit D after connecting in end to end mode
8～D
11
3. anti-electricity-theft pick-up unit according to claim 1 is characterized in that described branch current sampling summing circuit T2 comprises at least one current transformer sampling element L
n, the coil winding-direction of each current transformer sampling element is identical, after the parallel connection, is connected to rectification circuit D in the same way
8～D
11
4. anti-electricity-theft pick-up unit according to claim 1 is characterized in that described branch current sampling summing circuit T2 comprises at least one current transformer sampling element L
n, the coil winding-direction of each current transformer sampling element is identical, after connecting in end to end mode, is connected to rectification circuit D
8～D
11
5. anti-electricity-theft pick-up unit according to claim 1, it is characterized in that the sampling of described branch voltage " or " logical circuit T5 comprises at least one transformation rectification sample circuit E
n, the output diode D of each transformation rectification sample circuit
YnPositive pole join, constitute " or " logical circuit.
6. anti-electricity-theft pick-up unit according to claim 1, it is characterized in that being provided with ic for energy metering T7, the output terminal 5,6 of the output terminal 3 of the output terminal 1 of main circuit current sample circuit T1, branch current sample circuit T2 and main circuit voltage sampling circuit T4 is connected to the input end 1,3,5,6 of ic for energy metering respectively.
7. anti-electricity-theft pick-up unit according to claim 6 is characterized in that described ic for energy metering T7 is by power multiplier G
17With electric energy integrator G
18Form power multiplier G
17Output terminal 11 be connected to electric energy integrator G
18Input end 11, at electric energy integrator G
18Output terminal 12,13 be connected to LCD LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96226788 CN2286881Y (en) | 1996-07-05 | 1996-07-05 | Detection device for preventing from fraudulent use of electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96226788 CN2286881Y (en) | 1996-07-05 | 1996-07-05 | Detection device for preventing from fraudulent use of electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2286881Y true CN2286881Y (en) | 1998-07-29 |
Family
ID=33905067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96226788 Expired - Fee Related CN2286881Y (en) | 1996-07-05 | 1996-07-05 | Detection device for preventing from fraudulent use of electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2286881Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158333A (en) * | 2016-02-02 | 2016-11-23 | 何排枝 | A kind of current transformer integrating device |
| CN106841727A (en) * | 2017-01-16 | 2017-06-13 | 国网山东省电力公司龙口市供电公司 | Electricity anti-theft system and electricity anti-theft method |
| CN112147390A (en) * | 2020-09-23 | 2020-12-29 | 国网山东省电力公司莒县供电公司 | Automatic alarm anti-theft electric energy meter |
-
1996
- 1996-07-05 CN CN 96226788 patent/CN2286881Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106158333A (en) * | 2016-02-02 | 2016-11-23 | 何排枝 | A kind of current transformer integrating device |
| CN106841727A (en) * | 2017-01-16 | 2017-06-13 | 国网山东省电力公司龙口市供电公司 | Electricity anti-theft system and electricity anti-theft method |
| CN112147390A (en) * | 2020-09-23 | 2020-12-29 | 国网山东省电力公司莒县供电公司 | Automatic alarm anti-theft electric energy meter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 1998.07.29 |