CN1442697A - Device for anti stealing electricity - Google Patents
Device for anti stealing electricity Download PDFInfo
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- CN1442697A CN1442697A CN 02113419 CN02113419A CN1442697A CN 1442697 A CN1442697 A CN 1442697A CN 02113419 CN02113419 CN 02113419 CN 02113419 A CN02113419 A CN 02113419A CN 1442697 A CN1442697 A CN 1442697A
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Abstract
A device for preventing illegal use of electric energy features that two electric detectors are respectively arranged at an electric supplying end and an electric consuming end of a power transmission line and their values are compared. If they are not equal to each other, the illegal use of electric energy exists and an alarm signal is sent out by the detector at the electric supply end. Its advantages are simple structure, high effect and low cost.
Description
1. technical field
This device against charge evasion belongs to the technical field of power electronics instrument.
2. background technology
Opposing electricity-stealing is the difficult problem of electric industry department.Stealing can roughly be divided into circuit stealing and table meter stealing two big classes by the difference of gimmick.So-called circuit stealing is meant the behavior of directly not stealing electric power from transmission line of electricity by the table meter.The stealing of so-called table meter is meant with meter wiring of change table or obstruction table meter and moves to reach less or to disregard the behavior of electric power.Because stealing is normally hidden, at random with disperse, thereby be difficult to prediction and prevent.Electric industry department can only take to assault the method for inspection usually except the precautionary measures such as the his-and-hers watches meter is taked to install concentratedly, lead sealing.But assault inspection will expend lot of manpower and material resources, and remains after having to run around all the time wears him out and capture one and leak ten thousand, and is hard to guard against.Although many publications were delivered the scheme of opposing electricity-stealing, what have has also introduced special-purpose chip and circuit (see " application of electronic technology " 99 years 5 phase 64～66 pages), and its function or method all can't contend with stealing trick miscellaneous comprehensively.
3. summary of the invention
This device against charge evasion respectively is provided with a detecting device at the feeder ear and the electricity consumption end of power circuit, by measure simultaneously and relatively the electric weight at these two ends whether equate, judge whether this circuit has the stealing incident to take place, when this two ends electric weight does not wait and when check confirmed to have the stealing incident to take place, the feeder ear detecting device sent alerting signal.Implement the present invention, can be electric industry department provides a kind of simple and convenient, comprehensive and accurate device against charge evasion and stealing trick miscellaneous to contend with comprehensively.
4. embodiment and the description of the drawings
4.1 one of embodiment
Fig. 1 is one of embodiment.The picture and text definition G of this instructions is the feeder ear detecting device, and Y is an electricity consumption end detecting device.Single phase power supply end detecting device G can be made up of circuit such as current sample, line rectification, V/F conversion, reception amplification, demodulation, decoding, judgement, warnings, and electricity consumption end detecting device Y can be made up of circuit such as current sample, line rectification, V/F conversion, coding, modulation, power amplifiers.In order to discuss conveniently, the spy also is marked in the stealing load H that does not belong to device against charge evasion among the figure.When line drop can give when ignoring, feeder ear is sent and electric energy that electricity consumption end and stealing end obtain, can characterize with IG, IY and IH respectively, and IG=IY+IH is arranged.When not having the stealing load, IH=0, IG=IY.When there being stealing when load, IG＞IY is arranged generally speaking, but when user's power factor lower, and the impedance property of stealing load and customer charge then IG＜IY may occur when opposite.
The current sampling circuit of detecting device G, Y is transformed into a certain proportion of alternating voltage UG and UY to IG and IY respectively, becomes DC voltage VG and VY after linear rectification respectively, is transformed into the electric pulse that frequency is FG and FY respectively after delivering to the V/F translation circuit.Wherein FG directly delivers to decision circuit, and FY is encoded earlier, modulation, is sent by antenna TY by the CY coupling or with wireless system with the line of electric force carrier system behind power amplifier again; Feeder ear detecting device G then receives above-mentioned signal by CG from line of electric force or from the TG antenna, is reduced into FY after amplification, demodulation, decoding, also delivers to decision circuit.Under the condition of corresponding circuits parameter unanimity between G, Y, when IG=IY, FG=FY must be arranged, and when IG ≠ IY, FG ≠ FY must be arranged.Therefore, judge whether FG and FY equate, just can be used as to judge the foundation that has or not the stealing sign.When the stealing sign not occurring, FG=FY, decision circuit no signal output this moment; And when the stealing sign occurring, FG ≠ FY, after check was confirmed, decision circuit triggered output signal VJ warning circuit and sends alerting signal.This signal can also can pass through medium such as industrial siding, line of electric force, telephone wire, radio in encoded modulation back by on-the-spot alarm equipment alarm, reports to the police to duty room or Net-connected computer.Except that decision circuit, this structure and principle of installing other circuit all is known.
Fig. 2 is the embodiment of decision circuit.It can be made up of comparator circuit, check circuit and coordination circuits.Whether IC2 among the figure～IC5 forms comparator circuit, be used for calculating and compare FG and equate with FY.Whether IC10, IC12 form the check circuit, be used for judging truly having the stealing incident to take place, IC6 etc. form coordination circuits, and decision circuit is worked in an orderly manner.IC in the circuit can select CD series for use, and except that the model that marks in the drawings, IC1, IC5, IC9, IC11 can be with 4071, and IC7 can be with 4069, and IC8 can be with 4081.And 1 millisecond of C1R1 ≈, 2 milliseconds of C2R2 ≈, C3R3, C4R4, C5R5 are differentiating circuit, and D is for quickening diode, and R6 is a bleeder resistance, and AN is artificial reset key.Supply voltage is 5V.Regularly the power frequency pulse of usefulness can obtain from current sampling circuit.
In the moment that powers on or AN presses, IC2, IC3, IC6, IC10, IC12 reset, and circuit enters search condition.IC2, IC3 begin respectively FG and FY to be counted, and its value g0～g3 and y0～y3 send IC4.Meanwhile, IC6 to be carrying out timing to the way of 50Hz power frequency step-by-step counting, and different timing cycles can be from the various combination of the different port of IC6 and port and obtained.This routine timing cycle is about 10.24 seconds.IC6 output high level when arriving timing cycle.It one the tunnel enables to IC4, and it is compared g0～g3 and y0～y3; Another road makes IC2, IC3, IC6 reset after C1R1 postpones about 1 millisecond, makes the circuit return to search or changes the check state over to.So go round and begin again.
Through IC4 relatively, if g0～g3=y0～y3 is FG=FY, then the IC4 no signal is exported through IC5.And the high level of IC6 makes IC2, IC3 and IC6 reset behind about 1 millisecond time-delay, makes the circuit return to search.
Through IC4 relatively, if FG＞FY, then 5 pin of IC4 output high level; And during FG＜FY, the 7 pin output high level of IC4.This high level is given IC10 by IC5 one tunnel, the number of times that the stealing sign occurs is added up, in order to the check, its first count value be 1.Another road of this high level is after quickening diode D and delivering to the IC7 negate, and locking IC8 rapidly makes the reset pulse through just forming after postponing about 1 millisecond of IC6 output, can not influence the count value of IC10.At this moment, circuit changes the check state over to.
In the check cycle, if do not occur the stealing sign again, then because of IC5 is that low level IC7 is a high level, for condition has been prepared in the unlatching of IC8.The reset pulse that forms through about 1 millisecond delay when the output of IC6 makes IC2, IC3, when IC6 resets, the high level of this reset pulse and IC7 has been opened IC8 together, make IC8 output high level, deliver to IC10 through IC9, also make IC10 reset, removed before aggregate-value, made the circuit return to search the stealing sign number of times that is occurred.If but in the check cycle, continued to occur the stealing sign, then will to add up on the basis of former count value 1 would be 2 to IC10.At this moment, circuit changes second over to and takes turns the check state.
In like manner, take turns check through second, if do not occur the stealing sign again, then the count value of IC10 will be eliminated, the circuit return to search.If continue to occur the stealing sign, then the count value of IC10 will be 3 from 2 accumulative totals, from its 7 pin output high level, make the IC12 upset, and output alarm signal VJ makes device enter alarm condition.In case of necessity, the wheel number of check can increase or reduce, as long as change the port output signal that is higher or lower than counting 3 from IC10.
Finish or in case of necessity, the staff can click AN in event handling, make the decision circuit return to search that resets to stop alarm condition.
4.2 two of embodiment
Fig. 3 is two of embodiment.It can be provided with three current samples, three line rectifications and a summing circuit.Electric current I A, IB, IC to A, B, C three-phase (line) samples respectively, obtains UA, UB, UC, corresponding VA, VB, the VC of obtaining after linear rectification, and they send the summing circuit addition, obtain VG (or VY)=VA+VB+VC.VG (or VY) delivers to V/F conversion and subsequent conditioning circuit thereof as shown in Figure 1 again.Because this VG (or VY) has characterized three-phase (line) electric current sum, therefore can finish detection to blue circuitry phase.It both had been applicable to feeder ear detecting device G, also was applicable to electricity consumption end detecting device Y.The mechanism of summing circuit is known among the figure.
4.3 three of embodiment
When the electricity consumption end is the end of supply line when being user side, because the electric energy of user side gets by user's electric energy meter meter, so the circuit of electricity consumption end detecting device Y can simplify, as shown in Figure 4 and Figure 5.Single-phase electric energy meter among Fig. 4 has replaced the current sample among the Y shown in Figure 1, line rectification and V/F translation circuit, and the three-phase electric energy meter among Fig. 5 has replaced the V/F translation circuit that whole circuit among the Y shown in Figure 3 and Fig. 3 do not mark, and directly obtains FY from user's electric energy meter.As user's electric energy meter is full electronic, and then FY can obtain from the relevant interface of its chip; As user's electric energy meter is induction type, and then the available light electric transducer becomes electric impulse signal to rotating disk signal transformation, and its conversion mechanism is known.Adjust the parameter of feeder ear detecting device V/F translation circuit, make it have FG=FY to get final product under the condition of electricity consumption normal.
5. embodiment
The circuit of present technique is simple, can manufacture fixed, portable and semifixed half portable device against charge evasion.Stationary installation is owing to " fixing ", and then the current sample device of its feeder ear detecting device can be chosen specification suitable current mutual inductance stream or divertor wantonly, to reduce cost; And electricity consumption end detecting device can adopt the scheme of Fig. 4 or Fig. 5, and wherein single-phase or three-phase electric energy meter is that the user is original or due, thereby can reduce newly-increased cost.Prior, owing to be to obtain FY, thereby not only can instead show to count stealing but also can anti-circuit stealing from user's electric energy meter.But its exist can't be motor-driven shortcoming, and the dead angle that of such a size electrical network always exists stationary installation to monitor unavoidably.Therefore electric industry department must be equipped with an amount of wheeled apparatus, so that inspection is deployed to ensure effective monitoring and control of illegal activities.The current sample device of wheeled apparatus must use pincers type mutual inductor, so that on-the-spot the extension unloaded; Its electricity consumption end detecting device must be light, thereby preferably adopt the scheme of Fig. 1 or Fig. 3.As for half mobile semi-fixed type, generally can make electricity consumption end detecting device fixed so that bring into play the effect of user's electric energy meter, and the feeder ear detecting device is made movable type, so that motor-driven.They can mutually combine, and learn from other's strong points to offset one's weaknesses, and form the tight network of opposing electricity-stealing.
6. Effectiveness and benefit
The know-why of this device is plain, and circuit structure is simple, thereby easy to use and reduced production Cost; Owing to use the technology of search and check automatic synchronization, thereby can in 24 hours, monitor incessantly Electrical network is in time found the stealing event, compares with traditional assault visiting method, and incomparable height is not only arranged Efficient, and greatly reduce operation (use) cost; Because available fixedly tie mutually with wheeled apparatus Close and form the tight network of opposing electricity-stealing, thereby can contend with all stealing tricks comprehensively; Owing to use multiple Look into technology, thereby can get rid of the impact of interference, guarantee the accuracy of opposing electricity-stealing and taking action. Thereby realized being electricity Industry department provides a kind of original intention of simple and convenient, comprehensive and accurate device against charge evasion.
When the circuit between detecting device G, the Y leaks electricity, also can report to the police because of IG＞IY.Therefore this device also has the function of detection of electrical leakage concurrently, but a tractor serves several purposes.
Stealing gives that electric industry department causes is lost to the end has muchly, is difficult to accurate statistics, but has some idea of from indivedual reports.The 5th edition report said October 12 calendar year 2001 " Chengdu daily paper ", from " 1997 are so far, and the stealing family that light is discovered and seized just reaches 780 families, power-steeling quantity 3399.2 ten thousand kilowatt hours, and the conversion electricity charge reach 1618.5 ten thousand yuan, and these data also do not comprise not to be investigated and prosecuted." claim that according to the insiders actual loss is when being more than ten times of above-mentioned report.The loss in a Chengdu is just so huge, then well imagines, national, global loss must be an astronomical figure.About 50 yuan/cover of the average production cost of this device, the integrated cost that is installed on the electrical network can be by the estimation of 100 yuan/cover.According to the actual stealing loss in the alleged Chengdu of above-mentioned insider for 10 times of the value of discovering and seizing (more than) imagination, if half that take out this amount of loss promptly 8092.5 ten thousand yuan be used for promoting this device, cover more than 800,000 can be installed, enough monitor the whole city network in Chengdu.And remaining half reaches a large amount of later on stealing losses that reduce, and promotes the benefit of this device exactly.As seen produce and promote the use of this device against charge evasion, spread a net, will increase the dynamics of opposing electricity-stealing greatly, obtain huge economic benefit and social benefit to electricity filching person.
Claims (7)
1. device against charge evasion that belongs to the power electronics Instrument technology field, it is characterized in that: feeder ear and electricity consumption end at power circuit respectively are provided with a detecting device, by measure simultaneously and relatively the electric weight at these two ends whether equate, judge whether this circuit has the stealing incident to take place, when this two ends electric weight does not wait and when check confirmed to have the stealing incident to take place, the feeder ear detecting device sent alerting signal.
2. device against charge evasion as described in claim 1, it waits to levy: single phase power supply end detecting device can be made up of circuit such as current sample, line rectification, V/F conversion, reception amplification, demodulation, decoding, judgement, warnings, electricity consumption end detecting device can be made up of circuit such as current sample, line rectification, V/F conversion, coding, modulation, power amplifiers, but the current sample of electricity consumption end detecting device, line rectification and V/F translation circuit, also available single-phase electric energy meter replaces it.
3. device against charge evasion as described in claim 1, it is characterized in that: circuit such as three phase supply end detecting device can be sampled by three-phase current, three-phase linear rectification, summation, V/F conversion, reception amplification, demodulation, decoding, judgement, warning are formed, circuit such as electricity consumption end detecting device can be sampled by three-phase current, three-phase linear rectification, summation, V/F conversion, coding, modulation, power amplifier are formed, the wherein three-phase current of electricity consumption end detecting device sampling, three-phase linear rectification, summing circuit and V/F conversion, also available three-phase electric energy meter replaces it.
4. one as claim 2 or the described device against charge evasion of claim 3, it is characterized in that: decision circuit can be by comparator circuit, check circuit and coordination circuits are formed, comparator circuit compares the pulsed frequency of the feeder ear detecting device after the V/F conversion and the pulsed frequency of electricity consumption end detecting device, when the stealing sign not occurring, both equate, the output of comparator circuit no signal, and when the stealing sign occurring, both do not wait, the comparator circuit output signal, send the check circuit to check, when confirming to have the stealing incident to take place through check, the check circuit output signal removes to trigger warning circuit and sends alerting signal, in said process, coordination circuits operates decision circuit in an orderly manner.
5. device against charge evasion as described in claim 1 is characterized in that: the electric quantity signal of electricity consumption end detecting device, can adopt power line carrier mode or wireless system to send the feeder ear detecting device to.
6. device against charge evasion as described in claim 1, it is characterized in that: the stealing alerting signal that the feeder ear detecting device sends, can also can pass through medium such as industrial siding, line of electric force, telephone wire, radio by on-the-spot alarm equipment alarm, report to the police to duty room or Net-connected computer.
7. device against charge evasion as described in claim 1 when the circuit between feeder ear detecting device and the electricity consumption end detecting device leaks electricity, can occur also that the two ends electric weight does not wait and the feature of reporting to the police, thereby also be a leakage indicator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021134197A CN1300904C (en) | 2002-03-05 | 2002-03-05 | Device for anti stealing electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021134197A CN1300904C (en) | 2002-03-05 | 2002-03-05 | Device for anti stealing electricity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1442697A true CN1442697A (en) | 2003-09-17 |
| CN1300904C CN1300904C (en) | 2007-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021134197A Expired - Fee Related CN1300904C (en) | 2002-03-05 | 2002-03-05 | Device for anti stealing electricity |
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| Country | Link |
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| CN (1) | CN1300904C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2446828A (en) * | 2007-02-06 | 2008-08-27 | James Anthony Smee | Anti-theft metering system |
| WO2009059386A2 (en) * | 2007-10-23 | 2009-05-14 | Renato De Queiroz Silva | System for detecting and preventing power theft |
| CN103208091A (en) * | 2013-04-25 | 2013-07-17 | 国家电网公司 | Electric larceny preventing method based on data mining of electric load management system |
| CN106841879A (en) * | 2017-03-29 | 2017-06-13 | 中国电力科学研究院 | The method that detection electric current metering secondary concatenates rectifier |
| IT201600116906A1 (en) * | 2016-11-18 | 2018-05-18 | Elio Mauro Longo | Device to detect and prevent theft of electricity |
| CN112669574A (en) * | 2020-11-28 | 2021-04-16 | 国网辽宁省电力有限公司锦州供电公司 | Power supply enterprise power distribution station operation abnormity alarm method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2131235Y (en) * | 1992-08-18 | 1993-04-28 | 桑锦英 | All-functional apparatus for avoiding or indicating fraudulent use of power |
| CN1160893A (en) * | 1997-01-20 | 1997-10-01 | 赫金奎 | Controller for preventing illegal use of electricity |
| CN2627516Y (en) * | 2002-03-05 | 2004-07-21 | 刘汪 | Electric larceny prevent device |
-
2002
- 2002-03-05 CN CNB021134197A patent/CN1300904C/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2446828A (en) * | 2007-02-06 | 2008-08-27 | James Anthony Smee | Anti-theft metering system |
| WO2009059386A2 (en) * | 2007-10-23 | 2009-05-14 | Renato De Queiroz Silva | System for detecting and preventing power theft |
| WO2009059386A3 (en) * | 2007-10-23 | 2009-06-25 | Queiroz Silva Renato De | System for detecting and preventing power theft |
| CN103208091A (en) * | 2013-04-25 | 2013-07-17 | 国家电网公司 | Electric larceny preventing method based on data mining of electric load management system |
| CN103208091B (en) * | 2013-04-25 | 2016-01-27 | 国家电网公司 | A kind of method of opposing electricity-stealing excavated based on power load Management System Data |
| IT201600116906A1 (en) * | 2016-11-18 | 2018-05-18 | Elio Mauro Longo | Device to detect and prevent theft of electricity |
| CN106841879A (en) * | 2017-03-29 | 2017-06-13 | 中国电力科学研究院 | The method that detection electric current metering secondary concatenates rectifier |
| CN106841879B (en) * | 2017-03-29 | 2019-08-27 | 中国电力科学研究院 | The method for detecting electric current metering secondary concatenation rectifier |
| CN112669574A (en) * | 2020-11-28 | 2021-04-16 | 国网辽宁省电力有限公司锦州供电公司 | Power supply enterprise power distribution station operation abnormity alarm method |
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| Publication number | Publication date |
|---|---|
| CN1300904C (en) | 2007-02-14 |
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