CN111983304B - Electricity stealing prevention method for electric energy meter - Google Patents
Electricity stealing prevention method for electric energy meter Download PDFInfo
- Publication number
- CN111983304B CN111983304B CN202010625929.9A CN202010625929A CN111983304B CN 111983304 B CN111983304 B CN 111983304B CN 202010625929 A CN202010625929 A CN 202010625929A CN 111983304 B CN111983304 B CN 111983304B
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- prevention method
- executing
- value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/066—Arrangements for avoiding or indicating fraudulent use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
- G01R11/24—Arrangements for avoiding or indicating fraudulent use
Abstract
The invention relates to an electricity larceny prevention method for an electric energy meter, which comprises the steps of arranging a dummy load in the electric energy meter, then carrying out on-off operation on the dummy load at regular intervals, measuring the voltage at an electric energy meter end at the same time, judging whether zero line interference electricity larceny exists or not by judging the times that the voltage difference at the electric energy meter end exceeds a set value when the dummy load is on and off within a certain time, correcting in time, preventing the electric energy metering loss caused by electricity larceny, and reducing the loss of a power supply enterprise.
Description
Technical Field
The invention relates to the technical field of electric energy meters, in particular to an electric energy meter electricity larceny prevention method.
Background
In the electricity utilization process, electricity stealing behaviors occur occasionally, and although the behaviors are stringently stricken at home and abroad, the behaviors cannot be completely eradicated. With the development of the technology, the existing electric energy meter can identify some electricity stealing modes, for example, the double-loop electric energy meter widely used at present can identify the electricity stealing behavior of load grounding and correct and measure the electricity stealing behavior. However, the electricity stealing person does not stop the operation, but generates some new electricity stealing means, such as electricity stealing by zero line interference, that is, the electricity stealing person connects one end of the load with the live wire, the other end is grounded, the zero line incoming wire of the electric energy meter is cut off, the zero line of the user end is grounded through a resistor or a capacitor, so that the electric energy meter can measure accurate current, but the measured voltage is the value after the voltage is divided by the resistor or the capacitor on the zero line, therefore, the power measured by the electric energy meter is smaller than the actual power, and the purpose of electricity stealing is achieved, and the existing electric energy meter can not identify and correct the electricity stealing mode, which results in the loss of a power supply unit.
Disclosure of Invention
In view of the above problems, the present invention provides a method for preventing electricity stealing of an electric energy meter, which can identify and correct the way of electricity stealing due to interference of a zero line.
In order to realize the purpose, the technical scheme of the invention is as follows: an electric energy meter electricity larceny prevention method is characterized in that: the electric energy meter is provided with a dummy load with controllable on-off, the electric energy meter electricity larceny prevention method comprises the following steps,
s1, initializing conditions to meet the times N and the detection times M, and detecting a voltage value U1 of an electric energy meter end when a dummy load is turned off;
s2, opening a dummy load;
s3, after waiting for the time T1, detecting a voltage value U2 of the electric energy meter end; calculating a voltage difference value delta U = U2-U1, if delta U < -Ut, adding 1 to the number N of times of condition satisfaction, and executing S4; otherwise, directly executing S4;
s4, turning off the dummy load;
s5, after waiting for the time T1, detecting a voltage value U1 of the electric energy meter end; calculating a voltage difference value delta U = U1-U2, if delta U > Ut, adding 1 to the condition satisfaction times N, and executing S6; otherwise, directly executing S6;
s6, adding 1 to the detection times M in the current round, judging whether the M is equal to Mt, and if so, executing S7; if not, returning to execute S2;
s7, if the condition satisfaction times N are not less than Nt1, judging that electricity stealing exists, executing S8, otherwise, continuously judging, if the condition satisfaction times N are not more than Nt2, judging that electricity stealing does not exist, executing S9, otherwise, maintaining the current state;
s8, recording electricity stealing data, starting a correction metering mode or automatically cutting off a load switch to prevent electricity stealing, and executing S10;
s9, if the current metering mode is corrected, the normal metering mode is recovered, and S10 is executed; otherwise, directly executing S10;
and S10, waiting for time T2, returning to execute S1, and starting a new round of detection.
Further, the dummy load is a controllable circuit with power consumption of 0.5W.
Further, the correcting and metering mode is that power calculation is carried out according to the system reference voltage Un, the real-time current I and the power factor 1.0, and electric quantity is accumulated.
Further, the normal metering mode is that power calculation is carried out according to the real-time U, the real-time current I and the real-time power factor q of the system, and electric quantity is accumulated.
Further, the value of T1 is 250ms.
Further, ut takes a value of 5V.
Further, the value of Mt is 16 times.
Further, the value of Nt1 is 14 times.
Further, the value of Nt2 is 2 times.
Further, the value of T2 is 10s.
Compared with the prior art, the invention has the advantages that:
the method comprises the steps of setting a dummy load in an electric energy meter, then conducting on-off operation on the dummy load at regular intervals, measuring the voltage at the end of the electric energy meter, judging whether zero line interference electricity stealing exists or not by judging the frequency that the voltage difference at the end of the electric energy meter exceeds a set value when the dummy load is turned on or off within a certain time, and timely correcting the error to prevent electric energy metering loss caused by electricity stealing, so that the loss of power supply enterprises is reduced.
Drawings
Fig. 1 is a schematic structural diagram of a corresponding zero line interference electricity stealing mode in the present application.
FIG. 2 is a flow chart of a method for preventing electricity stealing of an electric energy meter.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention and are not to be construed as limiting the present invention.
Fig. 1 is a schematic diagram of a corresponding zero line interference electricity stealing mode of the present invention, fig. 2 is a flowchart of a preferred embodiment of the present invention, and as shown in fig. 2, the electricity stealing prevention method of the electric energy meter specifically includes the following steps:
s1, initializing conditions to meet the times N and the detection times M, and detecting a voltage value U1 of an electric energy meter end when a dummy load is turned off;
s2, opening a dummy load;
s3, after waiting for the time T1, detecting a voltage value U2 of the electric energy meter end; calculating a voltage difference value delta U = U2-U1, if delta U < -Ut, adding 1 to the number N of times of condition satisfaction, and executing S4; otherwise, directly executing S4;
s4, turning off the dummy load;
s5, after waiting for the time T1, detecting a voltage value U1 of the electric energy meter end; calculating a voltage difference value delta U = U1-U2, if delta U > Ut, adding 1 to the condition satisfaction times N, and executing S6; otherwise, directly executing S6;
s6, adding 1 to the detection times M in the current round, judging whether the M is equal to Mt, and if so, executing S7; if not, returning to execute S2;
s7, if the condition satisfaction times N are not less than Nt1, judging that electricity stealing exists, executing S8, otherwise, continuously judging, if the condition satisfaction times N are not more than Nt2, judging that electricity stealing does not exist, executing S9, otherwise, maintaining the current state;
s8, recording electricity stealing data, starting a correction metering mode or automatically cutting off a load switch to prevent electricity stealing, and executing S10;
s9, if the current metering mode is corrected, the normal metering mode is recovered, and S10 is executed; otherwise, directly executing S10;
and S10, waiting for time T2, returning to execute S1, and starting a new round of detection.
In this embodiment, the dummy load connected to the electric energy meter is a controllable circuit with power consumption of 0.5W, and it is of course conceivable that the power consumption value of the dummy load may be designed in different manners according to specific situations such as the model of the electric energy meter, the usage environment, and the like.
In the method, the correction metering mode in the step S9 corresponds to the correction metering mode, power calculation is carried out according to the system reference voltage Un, the real-time current I and the power factor 1.0, and electric quantity is accumulated; and the normal metering mode in the S9 corresponds to the normal metering mode, power calculation is carried out according to the real-time U, the real-time current I and the real-time power factor q of the system, and the electric quantity is accumulated.
The values of the parameters in the application are as follows, wherein T1 is 250ms, ut is 5V, mt is 16 times, nt1 is 14 times, nt2 is 2 times, and T2 is 10s. Of course, the value can be adjusted according to the use environment of the electric energy meter and other factors as required.
For an electric energy meter, a zero line interference electricity stealing can ground a zero line of a user terminal in a wiring through a resistor or a capacitor, when a controllable dummy load is implanted into the electric energy meter, the voltage change input into the electric energy meter can be synchronously detected when the load is turned on/off at regular time, so that whether electricity stealing exists or not can be judged, namely when the dummy load is turned on and turned on, the power consumption of the electric energy meter is increased, the current passing through the electricity stealing resistor/capacitor is increased, the voltage drop generated on the current is increased, the voltage of the electric energy meter end is reduced, when the dummy load is turned off, the power consumption of the electric energy meter is reduced, the current passing through the electricity stealing resistor/capacitor is reduced, the voltage drop generated on the current is reduced, the voltage input into the electric energy meter end is increased, the voltage change of the electric energy meter end is judged through continuously and repeatedly turning on or turning off the dummy load, and if each operation can meet the above rules, the zero line interference electricity stealing behavior can be judged to exist. The method can well solve the problem of judging electricity stealing due to zero line interference.
While embodiments of the invention have been shown and described, it will be understood by those skilled in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An electric energy meter electricity larceny prevention method is characterized in that: the electric energy meter is provided with a dummy load with controllable on-off, the electric energy meter electricity larceny prevention method comprises the following steps,
s1, initializing conditions to meet the times N and the detection times M, and detecting a voltage value U1 of an electric energy meter end when a dummy load is turned off;
s2, opening a dummy load;
s3, after waiting for the time T1, detecting a voltage value U2 of the electric energy meter end; calculating a voltage difference value delta U = U2-U1, if delta U < -Ut, adding 1 to the number N of times of condition satisfaction, and executing S4; otherwise, directly executing S4;
s4, turning off the dummy load;
s5, after waiting for the time T1, detecting a voltage value U1 of the electric energy meter end; calculating a voltage difference value delta U = U1-U2, if delta U > Ut, adding 1 to the condition satisfaction times N, and executing S6; otherwise, directly executing S6;
s6, adding 1 to the detection times M in the current round, judging whether the M is equal to Mt, and if so, executing S7; if not, returning to execute S2;
s7, if the condition satisfaction times N are not less than Nt1, judging that electricity stealing exists, executing S8, otherwise, continuously judging, if the condition satisfaction times N are not more than Nt2, judging that electricity stealing does not exist, executing S9, otherwise, maintaining the current state;
s8, recording electricity stealing data, starting a correction metering mode or automatically cutting off a load switch to prevent electricity stealing, and executing S10;
s9, if the current metering mode is corrected, the normal metering mode is recovered, and S10 is executed; otherwise, directly executing S10;
and S10, waiting for time T2, returning to execute S1, and starting a new round of detection.
2. The electricity larceny prevention method for the electric energy meter according to claim 1, characterized in that:
the dummy load is a controllable circuit with power consumption of 0.5W.
3. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
and the correction metering mode is that power calculation is carried out according to the system reference voltage Un, the real-time current I and the power factor 1.0, and the electric quantity is accumulated.
4. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
and the normal metering mode is that power calculation is carried out according to a system real-time U, a real-time current I and a real-time power factor q, and electric quantity is accumulated.
5. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
the value of T1 is 250ms.
6. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
and the Ut value is 5V.
7. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
the value of Mt is 16 times.
8. The method for avoiding fraudulent use of electric energy meter according to claim 7 is characterized in that:
the value of Nt1 is 14 times.
9. The method for avoiding fraudulent use of electric energy meter according to claim 8 is characterized in that:
the value of Nt2 is 2 times.
10. The electric energy meter electricity larceny prevention method according to claim 1, characterized in that:
the value of T2 is 10s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010625929.9A CN111983304B (en) | 2020-07-01 | 2020-07-01 | Electricity stealing prevention method for electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010625929.9A CN111983304B (en) | 2020-07-01 | 2020-07-01 | Electricity stealing prevention method for electric energy meter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111983304A CN111983304A (en) | 2020-11-24 |
| CN111983304B true CN111983304B (en) | 2022-10-04 |
Family
ID=73438477
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010625929.9A Active CN111983304B (en) | 2020-07-01 | 2020-07-01 | Electricity stealing prevention method for electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111983304B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1018992B (en) * | 1956-03-25 | 1957-11-07 | Kurt Starauschek Dr Ing | Device for measuring the reactive load at the same time as the highest mean active load |
| CN201289502Y (en) * | 2008-09-11 | 2009-08-12 | 深圳长城开发科技股份有限公司 | Device for processing zero line interference of energy counting device |
| CN102298082B (en) * | 2009-03-10 | 2014-08-13 | 吴嘉懿 | Electricity-stealing prevention electric energy meter |
| CN201425622Y (en) * | 2009-06-08 | 2010-03-17 | 周兆强 | Electric energy meter unit failure detection device |
| WO2012037055A1 (en) * | 2010-09-13 | 2012-03-22 | Trilliant Networks | Process for detecting energy theft |
| CA2820477C (en) * | 2013-06-14 | 2015-07-07 | Sinope Technologies Inc. | Low power and low emi power stealing circuit for a control device |
| DE102014018809A1 (en) * | 2014-12-19 | 2016-06-23 | Emh Metering Gmbh & Co. Kg | Transmission via a power grid with modulable consumer and electricity meter |
| US10910963B2 (en) * | 2018-07-27 | 2021-02-02 | Ademco Inc. | Power stealing system with an electric load |
| CN110808761A (en) * | 2019-10-21 | 2020-02-18 | 中科可来博(固安)航天电器制造有限公司 | Method for tampering stealing information on power line and preventing interference |
-
2020
- 2020-07-01 CN CN202010625929.9A patent/CN111983304B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111983304A (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110930034B (en) | Electric power spot market settlement metering data verification method, device and medium | |
| CN102664384B (en) | A kind of intelligent tripping method of power arrester | |
| JP7249431B2 (en) | Detection method, device, electronic device and storage medium for power consumption behavior | |
| CN112098712B (en) | Method for preventing fraudulent use of electricity | |
| CN110046076A (en) | Intelligence system facility environment inspection method, system, equipment and can storage medium | |
| CN102411090A (en) | Self-checking electronic energy meter and self-checking method thereof | |
| CN107993430B (en) | Method for improving stability of Ethernet PHY chip of concentrator | |
| CN110174636A (en) | A kind of detection method, system and the read/write memory medium of electric energy meter period switching | |
| CN115436699A (en) | Method and device for detecting electricity utilization abnormity and electronic equipment | |
| CN115436871A (en) | Method for preventing zero line missing electricity stealing of single-phase electric energy meter based on low power consumption | |
| CN111983304B (en) | Electricity stealing prevention method for electric energy meter | |
| CN111060729B (en) | Electricity stealing prevention method and system for intelligent electric meter | |
| CN109633357B (en) | Method and device for monitoring grounding insulation of multiple buses in three buses | |
| CN111812395A (en) | Lightning monitoring device and lightning protection device | |
| CN109991563B (en) | Current transformer disconnection detection method and measurement device | |
| CN111273181A (en) | Battery backup unit monitoring method and device, server and readable storage medium | |
| CN110501554A (en) | A kind of detection method and device of storage chip installation | |
| CN207730854U (en) | Power quality acquisition testing system | |
| CN114217125A (en) | Intelligent ammeter capable of preventing electricity theft, electricity theft prevention system and electricity theft prevention detection method thereof | |
| CN215005567U (en) | Broadband carrier module with electricity stealing prevention detection function | |
| CN110133365B (en) | Method and device for detecting switching event of load | |
| JP4698248B2 (en) | Power outage discount calculation system for electricity charges | |
| CN111983276A (en) | Electricity stealing prevention method for double-loop electric energy meter | |
| CN216870659U (en) | Intelligent ammeter capable of preventing electricity stealing and electricity stealing prevention system | |
| CN115225244B (en) | Clock time setting method and device for low-voltage meter reading, main equipment and medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |