CN104155497A - Single-phase electric energy meter anti-electricity-theft method - Google Patents
Single-phase electric energy meter anti-electricity-theft method Download PDFInfo
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- CN104155497A CN104155497A CN201410352341.5A CN201410352341A CN104155497A CN 104155497 A CN104155497 A CN 104155497A CN 201410352341 A CN201410352341 A CN 201410352341A CN 104155497 A CN104155497 A CN 104155497A
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Abstract
The invention provides a single-phase electric energy meter anti-electricity-theft method. A live wire is not changed in modified single-phase electric energy meter wires; null lines adopt a unique wiring manner that backup ground is added to double null lines, that is, one null line directly accesses a house without passing the electric energy meter; the other null line ensures a voltage element of the electric energy meter to collect a correct phase voltage; electricity theft adopting an undervoltage and shunt method that null lines of the electric energy meter are rigged first, and running state of the electric energy meter is remotely controlled is efficiently avoided; the electricity theft cost of a customer is increased; the electricity theft probability is reduced; the electrical quantity loss is effectively reduced; lawful rights of an electric power supply enterprise is maintained; contribution is made for damage reduction and benefits improvement.
Description
Technical field
The present invention relates to electrical energy meter anti-theft electricity technology field, relate in particular to a kind of single-phase electric energy meter electricity anti-theft method.
Background technology
Electric energy metrical is the important component part of electrical network economy, stable operation, is the important step that electrical production is sold.Electric energy meter is the instrument that carries out power trade clearing for electricity consumption both sides in power distribution network, and its accuracy, reliability are subject to the consistent attention of power supply enterprise, are also directly connected to user's immediate interest.But in recent years, stealing situation often occurs, especially at the single-phase electric energy meter end of registering one's residence, user usually juggles things on the zero line of electric energy meter, and, only need to emit a risk to open table case and change connection box of electric energy meter, with regard to remote-controlled electric energy meter operation, in the past for a long time, not only caused very large loss to electric power enterprise, produce electric weight dispute, bring negative effect also to the good service work of electric power enterprise.
For above-mentioned situation, technician often adopts many kinds of measures to carry out stealing prevention and control, application number is that 200420047835.4 utility model patent discloses a kind of low voltage outdoor electric larceny proof metering device, it comprises three mutual inductors, cable tail, watt-hour meter, ammeter box, it also comprises " 0 " phase pour mass, anti-theft box, three mutual inductors are housed in described anti-theft box, " 0 " phase pour mass of use is pressed in a power taking, in described mutual inductor, insert transformer secondary outlet guide rod, the guide rod that is positioned at mutual inductor is fixed with jackscrew, nut, in mutual inductor, one end of secondary coil and embedding nut join, coil is poured into a mould resin around, transformer casing is that insulating material is suppressed the rolled-up stock forming, described anti-theft box is outdoor insulative material rolled-up stock, its bonnet is with lead sealing fastened by screw, its advantage is for having adopted current transformer monolithic construction, increase again " 0 " phase pour mass, after be stamped the anti-theft box of lead sealing screw, can prevent from well disconnecting zero line or pressure-wire stealing, and this apparatus structure compactness, install, easy to use.Application number is that 201220646004.3 utility model relates to a kind of ammeter, particularly a kind of electric meter capable of avoiding fraudulent use of electricity.This electric meter capable of avoiding fraudulent use of electricity, comprises electric meter box, and the bottom of electric meter box is provided with connection jaws, it is characterized in that: described connection jaws place is provided with monitoring modular, and monitoring modular is connected with the display screen that is arranged on electric meter box outside.Connection jaws place is provided with sealing of hole sheet, and described sealing of hole sheet is built-in with alarm chip, and its beneficial effect is: this electric meter capable of avoiding fraudulent use of electricity, and flexible structure, simple to operate, effectively monitor the behavior of stealing, and overhauled conveniently.
Application number is that 98239074.2 utility model patent belongs to power supply technique field, is specifically related on watt-hour meter anti-electricity-theft device on supply lines.Be characterized in that lead sealing line (2) one end is connected in lead sealing (8), the other end is connected in contact chip (4), spring (3) is enclosed within on contact chip (4), gapped between contact (5) and contact chip (4), contact (5) is connected with "+", "-" of binding post (9), has spring (3), contact chip (4), contact (5), binding post (9), L2, C13, mercury cut-off (K) in the housing of random (6).Contact (5) is two, between "+" binding post (9) and connect L2, C13, mercury cut-off (K).Simple in structure, operate safe and reliable.Can prevent from showing front stealing, shunting stealing, a fiery ground stealing, Live line Zero line commutation stealing, table inclination stealing, tear gauge seal stealing open.Application number is that 01227955.2 utility model patent is that DD862a-F power-steeling preventing electric meter improves and forms, in watt-hour meter between live wire two binding posts and be respectively arranged with current coil mechanical type digital-measuring system L1 between 0 line two binding posts, L2, it is characterized in that: between live wire two binding posts and 0 line two connect and between post, have additional again respectively decompression open switch K1, K2, and K1, K2 is subject to the control of decompression open coil L3, K1, K2 is linked switch, feature of the present utility model is: in watt-hour meter, be provided with two groups of current coil mechanical type digital-measuring systems and decompression open switch, control respectively live wire and 0 line, can stop from this ammeter terminal stealing and carry out decompression stealing.
The measures of anti-stealing electricity of above-mentioned patent is conceived to two kinds more, one is to adopt encapsulating structure, as pour mass, anti-theft box, fastening silk etc., increase the transformation difficulty of electricity filching person from physical angle, another kind is to increase anti-electricity-theft electrical equipment, as warning device, decompression switch, mercury cut-off etc., avoid the stealing success of electricity filching person from the increase of circuit control angle, but so not only can increase the complicacy of electric energy meter structure, be unfavorable for repair and maintenance, also can increase the cost of table meter, therefore need badly a kind of simple to operation, cost is low, the significant electricity stealing preventive metering means of effect.
Summary of the invention
The invention provides a kind of single-phase electric energy meter electricity anti-theft method, the method, only by adjusting the wiring metering method of registering one's residence of electric energy meter, without increasing extra mechanism, just can make multiple electricity filching means lose efficacy, thereby has ensured the safety and reliability of supply line.
For achieving the above object, the technical solution used in the present invention is: a kind of single-phase electric energy meter electricity anti-theft method, and its concrete steps are as follows:
1) the house lead in mode of the conventional mode of connection, especially single-phase electric meter zero line and the live wire of electric energy meter is confirmed in inspection;
2) what keep each connecting line of live wire and zero line enters to show line constant, removes the zero line of registering one's residence between electric energy meter and user;
3) directly draw a loading zero line at zero line leading-in end, register one's residence and be connected with load;
4) zero terminal of registering one's residence of electric energy meter is connected with ground wire.
Described single-phase electric energy meter and indoor load adopt same ground wire.
Described zero line inlead is mode double arranged side by side on the same group.
Electricity stealing preventive metering method after improving in the present invention, the wiring of its live wire is constant, and current element can normally collect the current signal of reaction payload; The voltage at voltage component two ends is still also phase voltage, that is to say that improvement wiring front and back electric energy meter voltage element both end voltage is constant, and known according to ammeter power expression P=UICOS α, this wiring still can correctly be measured electric energy, and wherein, α is phasing degree.
Although the gimmick of current stealing is varied, changes ten thousand times without leaving the original aim or stand, modal is to start with from the ultimate principle of electric energy metrical.-individual electric energy meter metering electric weight number, depend mainly on voltage, electric current, power factor three elements and the product of time, any one key element changing as long as therefore try every possible means in three elements can make ammeter slow-speed, stall even reverse, thereby reaches the object of stealing; In addition, change the gimmick of the structural behaviour of ammeter itself by employing, make ammeter slow-speed, also can reach the object of stealing.
Meanwhile, anti-electricity-theft mode is also varied, mainly comprise that employing Special metering cabinet/case adds the mode of lead sealing, but the common lead sealing of which is easily by counterfeit, is also easily opened rear recovery by electricity filching person; Adopt false proof, the anti-electricity-theft mode of anti-picking lead sealing, ability false proof mainly for common lead sealing, pick-proof designs, but because lead sealing cap is coarctate with lead sealing, opens lead sealing and must damage lead sealing cap, so be difficult to restore after opening lead sealing; Adopt anti-electricity-theft electric energy meter, this mode is mainly to use on single-phase electric energy meter, and anti-stealing electricity function is still more single and increased the equipment cost for power transmission; The high-order electric energy meter of installing, is arranged on electric energy on bar, and people will climb up on the electric pole of several meters high, could destroy electric energy meter, but this is to making troubles to checking meter; Adopt high-voltage electric energy meter, do not have a power failure, people is inaccessible high-voltage electric energy meter, but this also gives and checks meter and periodic inspection is made troubles; Adoption Network monitoring remote meter reading.Power supply at every distribution line is all installed the electric energy meter with remote meter-reading function with electricity consumption, checks meter, by power supply and the power consumption of same time period of statistic computation simultaneously, and with theory wire loss comparison, if occur extremely, to have measurement problem, then investigate pointedly.This mode is relatively comprehensively reliable.Also be conducive to improve the management level of line loss management, load control and distribution.But one, on distribution line, user is more, find concrete stealing point, workload is still larger, the most important thing is high cost.
Although improving one's methods in the present invention is relatively more directly perceived and easy, does not substantially increase any equipment cost, does not also increase any difficulty of checking meter, the obtained effect of opposing electricity-stealing is fairly obvious.Because traditional electric energy meter stealing electricity method can cause the situation of zero electric weight or long-term decompression, the department that is very easily powered finds, so current stealing molecule under-voltage method or shuntings of adopting more, the former is the normal wiring that deliberately changes electric energy metrical voltage circuit by various gimmicks, or deliberately cause metered voltage mouth loop fault, cause potential winding decompression or the suffered voltage of electric energy meter to reduce, thereby cause electric weight to be counted less, method mainly contains and makes voltage circuit open circuit or seal in resistance step-down etc. at zero line output terminal, the latter deliberately changes the normal wiring in metering current loop or deliberately causes metering current loop fault by various gimmicks, cause the current coil no current of electric energy meter to pass through or only pass through part electric current, thereby cause electric weight to be counted less, method mainly contains and makes current return open circuit or by single-phase meter phase line and zero line exchange etc., so in the step 2 of this programme) in, the zero line of registering one's residence between electric energy meter and user is removed, so just make the ammeter wiring after optimizing only have live wire access electric energy meter, loading zero line does not access electric energy meter, make under-voltage method stealing, the scheme of transforming by zero line in shunting stealing cannot be implemented, also operation that just cannot remote control electric energy meter, and the method that need to carry out in addition open circuit or short circuit need to often open table case carry out stealing, institute takes risks larger, also be very easily found, so just stopping such stealing electricity phenomenon from technological layer occurs, thereby reduce the probability of client's stealing.Like this sound assurance the legitimate rights and interests of power supply enterprise, ensured electricity charge recovery operation, and can reduce line loss, increase the economic benefit of enterprise, for safeguarding good contributing for electricity consumption order.
Brief description of the drawings
Fig. 1 is the mode of connection of the conventional metering of single-phase electric energy meter.
Fig. 2 is the mode of connection of single-phase electric energy meter Anti-electricity-theft metering.
embodiment
A kind of single-phase electric energy meter electricity anti-theft method, its concrete steps are as follows:
1) the house lead in mode of the conventional mode of connection, especially single-phase electric meter zero line and the live wire of electric energy meter is confirmed in inspection;
In the conventional mode of connection, ensure the correct metering of electric energy meter, select the house lead in mode of zero line and live wire, only have live wire to enter electric energy meter, current element just can collect the current signal of reaction payload, and zero line is accessed to electric energy meter, voltage component just can collect the voltage signal at load two ends.Because electric power is the dot product of voltage and electric current, so so just can ensure correctly to measure client's electric energy.
2) what keep each connecting line of live wire and zero line enters to show line constant, removes the zero line of registering one's residence between electric energy meter and user;
In order to reduce security risk, conventionally the stealing of type is mainly to juggle things on the zero line of electric energy meter, especially registering one's residence between electric energy meter and user stolen between zero line, electricity filching person only need emit a risk to open table case change connection box of electric energy meter, the just electric energy meter of remote control for a long time operation, thus each connecting line that now should keep live wire and zero line enter to show line constant, and the zero line dismounting of registering one's residence, the stealing passage that is so just equivalent to remove electricity filching person, has no way of doing it it.
3) directly draw a loading zero line at zero line leading-in end, register one's residence and be connected with load;
In step 2) although in will register one's residence zero line remove, but as user load, its two ends must connect fire, could normally work in zero two wires, so zero line can be taked to two zero line modes of connection, one is used for being introduced into electric energy meter zero line leading-in end, another root, as the total zero line of load, is directly introduced into the zero line side of indoor load, ensures the normal use of indoor load.
4) zero terminal of registering one's residence of electric energy meter is connected with ground wire.
In the metering method after this improvement; live wire connection does not change; so the current element of electric energy meter still can collect the current signal of reaction payload; but because electric energy meter also need to be brought in and be gathered correct load voltage by the line of zero line; so the zero terminal of registering one's residence of electric energy meter can be connected with ground wire; on the one hand; back-up protection when ground connection is neutral line break; on the other hand; can ensure that ammeter voltage component can collect load voltage, still can realize the dot product metering of voltage and electric current.
Embodiment mono-
As shown in Figure 1 and Figure 2, a kind of single-phase electric energy meter electricity anti-theft method, its concrete steps are as follows:
1) the house lead in mode of the conventional mode of connection, especially single-phase electric meter zero line and the live wire of electric energy meter is confirmed in inspection;
The conventional mode of connection of single-phase electric energy meter is as shown in Figure 1: 1,3 wiring holes are inlet wire, and 2,4 wiring hole wiring are service wire, and wherein 1,2 wiring holes accesses is live wire, 3,4 wiring holes accesses be zero line.
2) what keep each connecting line of live wire and zero line enters to show line constant, removes the zero line of registering one's residence between electric energy meter and user;
Improvement connection plan is: the wiring of electric energy meter live wire is constant, only changes zero line, keeps the line of electric energy meter 1,2,3 terminals, removes the outlet of 4 terminals.
3) directly draw a loading zero line at zero line leading-in end, register one's residence and be connected with load;
Zero line adopts two zero line wiring, and one is No. 3 traditional terminal inlet wires, other one arranged side by side on the same group with No. 3 terminal inlet wires, directly introduce indoor zero line side as the total zero line of load.
4) zero terminal of registering one's residence of electric energy meter is connected with ground wire.
By No. 4 zero terminal ground connection of electric energy meter tail, so just ensure that ammeter voltage component can collect load voltage, still can realize the dot product metering of voltage and electric current.
Claims (3)
1. a single-phase electric energy meter electricity anti-theft method, is characterized in that: its concrete steps are as follows:
1) the house lead in mode of the conventional mode of connection, especially single-phase electric meter zero line and the live wire of electric energy meter is confirmed in inspection;
2) what keep each connecting line of live wire and zero line enters to show line constant, removes the zero line of registering one's residence between electric energy meter and user;
3) directly draw a loading zero line at zero line leading-in end, register one's residence and be connected with load;
4) zero terminal of registering one's residence of electric energy meter is connected with ground wire.
2. single-phase electric energy meter electricity anti-theft method as claimed in claim 1, is characterized in that: described single-phase electric energy meter and indoor load adopt same ground wire.
3. single-phase electric energy meter electricity anti-theft method as claimed in claim 1 or 2, is characterized in that: described zero line inlead is mode double arranged side by side on the same group.
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| CN201410352341.5A CN104155497A (en) | 2014-07-24 | 2014-07-24 | Single-phase electric energy meter anti-electricity-theft method |
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| CN201410352341.5A CN104155497A (en) | 2014-07-24 | 2014-07-24 | Single-phase electric energy meter anti-electricity-theft method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112114194A (en) * | 2020-08-19 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Electric energy meter operation control method |
| CN112542076A (en) * | 2020-12-04 | 2021-03-23 | 广东电网有限责任公司江门供电局 | Anti-electricity-stealing skill training device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112114194A (en) * | 2020-08-19 | 2020-12-22 | 宁波三星医疗电气股份有限公司 | Electric energy meter operation control method |
| CN112114194B (en) * | 2020-08-19 | 2023-03-03 | 宁波三星医疗电气股份有限公司 | Electric energy meter operation control method |
| CN112542076A (en) * | 2020-12-04 | 2021-03-23 | 广东电网有限责任公司江门供电局 | Anti-electricity-stealing skill training device |
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Application publication date: 20141119 |