A method and system for preventing power theft in power system

Abstract

The present invention discloses a method and system for preventing electricity theft in an electric power system, which relates to the technical field of electric power systems, and includes a local layer, a master control layer, and a personal terminal; the local layer includes an identification module, a flash identification module, and a transmission module; the identification module is used to identify the opening action, opening time, opening duration, and opening signature identification of a smart meter; the flash identification module includes a group of sending units and multiple identification units, and each identification unit is provided with a corresponding mark code; after each opening and closing of the cover at the opening position of the sending unit, each identification unit randomly switches a group to identify with the sending unit, and sends the mark code to the master control layer through the transmission module. The present invention comprehensively judges whether the smart meter has an electricity theft problem through local monitoring and remote data monitoring of the smart meter, and the master control layer compares the electricity consumption data of each smart meter within a preset range, and cooperates with local monitoring to quickly screen smart meters that may have electricity theft.

Description

Technical Field

[0001] The present invention relates to the technical field of power systems, and more specifically, to a method and system for preventing electricity theft in a power system. Background Art

[0002] With the progress of society and economic development, electricity has become an important energy source that is indispensable for social and economic development and people's lives, and the application scope of smart meters has also increased accordingly. Smart meters are electronic metering tools that collect electricity consumption information through sensors and analyze and process it to calculate the user's electricity consumption. Compared with traditional mechanical meters, smart meters have higher accuracy and faster response speed, and can provide more accurate electricity consumption data and better user experience;

[0003] Driven by profit, a small number of users have adopted various means to steal electricity in order to avoid paying or pay less electricity bills, disrupting the normal power supply order and causing national power loss. The electricity consumption calculation of smart meters mainly relies on three bases: voltage, current and power. Theoretically, users can achieve the purpose of stealing electricity by changing the current, voltage, meter speed, etc. To steal electricity with smart meters, it is necessary to complete the internal modification of the meter.

[0004] After searching, a Chinese patent (publication number: CN111965582A) discloses a smart meter maintenance and anti-electricity theft monitoring and processing method, including the following steps: when the cover is opened normally, the staff on site uses the signal indicator light (green light) as an indication of the cover opening work. After the main station issues a maintenance cover opening work command, the electric energy meter is activated, the signal indicator light changes from red to green, and the associated action of the cover opening switch and the relay is blocked. When the cover is opened normally, the electric energy meter will not form a record of the cover opening event, nor will it cause the electric energy meter to trip. On the contrary, when the cover is opened abnormally, the cover opening switch will pop up, the associated relay will act, causing the electric energy meter to trip, record the cover opening event, and send an early warning to the main station.

[0005] In the prior art, when monitoring the problem of electricity theft by smart meters, the monitoring method is relatively simple, and by monitoring a single smart meter, due to the lack of a comparison group, the final judgment result is prone to deviation. Summary of the invention

[0006] In view of the deficiencies in the prior art, an object of the present invention is to provide a method and system for preventing electricity theft in an electric power system.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solutions: an anti-electricity theft system for an electric power system, comprising a local layer, a master control layer and a personal terminal, wherein the personal terminal is a device held by a staff member when inspecting an electric meter;

[0008] The local layer includes recognition module, flash recognition module, and transmission module;

[0009] The identification module is used to identify the opening action, opening time, opening duration and opening signature of the smart meter;

[0010] The duration of opening the cover is the time difference between the execution time of the opening action and the execution time of the closing action.

[0011] The flash recognition module includes a group of sending units and multiple recognition units, each recognition unit is provided with a corresponding mark code;

[0012] After each opening and closing of the cover at the cover opening position, the identification units randomly switch to a group to identify with the sending unit, and send the identification unit mark code used for identification to the master control layer through the transmission module;

[0013] The sending unit is bound to the cover opening of the smart meter, and the identification unit is bound to the body of the smart meter;

[0014] When the cover part and the body part of the smart meter are closed, the sending unit is connected to the first group of identification units, and the group of identification units transmits the connection signal to the identification module;

[0015] After the cover opening part and the body part of the smart meter undergo the cover opening-closing steps, the sending unit switches to the identification unit;

[0016] The general control layer includes recording module, database and comparison module;

[0017] The recording unit is used to record the information of the corresponding smart meter user and establish a record table;

[0018] The database is used to record the electricity consumption data of each smart meter within a preset range, and the electricity consumption data of each preset range is classified based on different time periods;

[0019] The comparison module compares the data of each time period of the smart meter within the same preset range, obtains the fluctuation value between each adjacent time period, establishes a model for the fluctuation value of the smart meter within the same preset range, and calculates the average fluctuation value;

[0020] And the comparison module marks the smart meters whose values ​​are smaller than the average value for n consecutive time units.

[0021] Furthermore, the method for opening the cover and identifying the signature comprises the following steps:

[0022] S1: The staff connects the identification end of their personal terminal to the identification module of the corresponding smart meter;

[0023] S2: The identification module identifies and packages the identification code of the identification end, and transmits it to the master control layer through the transmission module;

[0024] S3: The master control layer unpacks and identifies the identification code. After the identification is successful, the authorization code is sent to the corresponding smart meter.

[0025] S4: After receiving the authorization code, the smart meter does not mark the cover opening action.

[0026] Further, the master control layer updates the unpacking key at a fixed time period, and after the unpacking key is updated, the master control layer transmits the packing code corresponding to the unpacking key to the identification module;

[0027] In step S2, after the identification code is packaged, the identification module combines the package code with the identification code and sends it to the master control layer.

[0028] Furthermore, before the cover opening of the smart meter is opened, it is connected to the personal terminal. After the cover opening of the smart meter is opened, the sending unit is disconnected from the first group of identification units, and the second group of identification units among the multiple identification units are randomly switched to connect with the cover opening after closing, and the second group of identification units transmit their own mark codes to the personal terminal through the transmission module;

[0029] After receiving the mark code of the second group of identification units, the personal terminal transmits the mark code as code I to the master control layer. After the cover of the smart meter is closed again, the corresponding identification unit transmits its own mark code as code II to the master control layer through the identification module.

[0030] The master control layer compares code Ⅰ and code Ⅱ. If code Ⅰ is missing or code Ⅰ does not match code Ⅱ, the opening action is marked as "abnormal".

[0031] Furthermore, the record includes whether there is someone living in the house during the unit time. The information is collected by the staff through on-site inspection during the unit time. When the staff conducts on-site inspection during the unit time, if someone opens the door normally, it is marked as someone living in the house during the unit time period.

[0032] Furthermore, the matching between the smart meter and the record includes the following matching results:

[0033] A1: If the marked smart meter is recorded as unoccupied in the record sheet, the mark of the smart meter will be cancelled;

[0034] A2: If the marked smart meter is recorded as occupied in the record sheet, the mark of the smart meter will be upgraded to "suspected of electricity theft".

[0035] Furthermore, the "abnormal" mark and "suspected electricity theft" mark of a single smart meter are counted. When the number of "abnormal" marks and the number of "suspected electricity theft" marks exceed a1 and a2 respectively, the main control layer issues a prompt message, where a1 and a2 are both positive integers greater than 0.

[0036] The present invention also discloses a method for preventing electricity theft in an electric power system, the method comprising the following steps:

[0037] Step 1: When the staff comes to inspect the smart meter, they record whether the household corresponding to the smart meter is occupied;

[0038] Step 2: The anti-electricity theft system monitors the opening action of the smart meter, assigns an "abnormal" mark to the opening action that does not meet the requirements, and transmits it to the master control layer;

[0039] Step 3: The main control layer of the anti-electricity theft system classifies and compares the electricity consumption data transmitted by each smart meter within the preset range, obtains the smart meters that do not meet the preset data, and assigns a "suspected electricity theft" mark;

[0040] Step 4: Count the number of "abnormal" marks and "suspected electricity theft" marks of a single smart meter, and issue a prompt message to the smart meter that exceeds the preset number.

[0041] Compared with the prior art, the present invention has the following beneficial effects:

[0042] The present invention uses local monitoring and remote data monitoring of smart meters to comprehensively determine whether there is a problem of electricity theft in smart meters;

[0043] During local monitoring, the open cover of the smart meter is monitored to obtain the authorization and code comparison of the open cover, so as to determine whether the cover is opened by a staff member. If it is determined that the cover is opened by a non-staff member, a corresponding mark is made;

[0044] In addition, the main control layer compares the electricity consumption data of each smart meter within a preset range. By dividing the time periods, it can facilitate the identification of the usage peaks and fluctuations of each smart meter, and the fluctuations in the usage time periods of the overall area, thereby assisting in judging the target of low usage fluctuations of smart meters when there are people living there, and cooperating with local monitoring to quickly screen out smart meters that may steal electricity. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The present invention is a flow chart of a method for preventing electricity theft in a power system. DETAILED DESCRIPTION

[0046] Example 1

[0047] Reference Figure 1As shown, a power system anti-electricity theft system includes a local layer, a master control layer and a personal terminal, wherein the personal terminal is a device held by a worker when inspecting an electric meter;

[0048] The local layer includes recognition module, flash recognition module, and transmission module;

[0049] The identification module is used to identify the opening action, opening time, opening duration and opening signature of the smart meter;

[0050] The method for opening the cover and identifying the signature comprises the following steps:

[0051] S1: The staff connects the identification end of their personal terminal to the identification module of the corresponding smart meter;

[0052] S2: The identification module identifies and packages the identification code of the identification end, and transmits it to the master control layer through the transmission module;

[0053] S3: The master control layer unpacks and identifies the identification code. After the identification is successful, the authorization code is sent to the corresponding smart meter.

[0054] S4: After receiving the authorization code, the smart meter does not mark the cover opening action.

[0055] In step S2, after the identification code is packaged, the identification module combines the package code with the identification code and sends it to the master control layer.

[0056] The duration of opening the cover is the time difference between the execution time of the opening action and the execution time of the closing action.

[0057] The flash recognition module includes a group of sending units and multiple recognition units, each recognition unit is provided with a corresponding mark code;

[0058] After each opening and closing of the cover at the cover opening position, the identification units randomly switch to a group to identify with the sending unit, and send the identification unit mark code used for identification to the master control layer through the transmission module;

[0059] The sending unit is bound to the cover opening of the smart meter, and the identification unit is bound to the body of the smart meter;

[0060] When the cover part and the body part of the smart meter are closed, the sending unit is connected to the first group of identification units, and the group of identification units transmits the connection signal to the identification module;

[0061] After the cover opening part and the body part of the smart meter undergo the cover opening-closing steps, the sending unit switches to the identification unit;

[0062] Before the cover of the smart meter is opened, it is connected to the personal terminal. After the cover of the smart meter is opened, the sending unit is disconnected from the first group of identification units, and the second group of identification units among the multiple identification units are randomly switched to connect with the cover after closing, and the second group of identification units transmit their own mark codes to the personal terminal through the transmission module;

[0063] After receiving the mark code of the second group of identification units, the personal terminal transmits the mark code as code I to the master control layer. After the cover of the smart meter is closed again, the corresponding identification unit transmits its own mark code as code II to the master control layer through the identification module.

[0064] The master control layer compares code I with code II. If code I is missing or code I does not match code II, the opening action is marked as "abnormal".

[0065] The general control layer includes recording module, database and comparison module;

[0066] The recording unit is used to record the information of the corresponding smart meter user and establish a record table;

[0067] The database is used to record the electricity consumption data of each smart meter within a preset range. The electricity consumption data of each preset range is classified based on different time periods. In this embodiment, each time period uses three time periods: 8:00-18:00, 18:00-24:00, and 24:00-8:00, representing the three sections of going to work, getting off work, and resting;

[0068] The record includes whether there is someone living in the unit time. In this embodiment, the unit time is 1 month. The information is collected by the staff during the unit time. When the staff conducts the door inspection during the unit time, if someone opens the door normally, it is marked as someone living in the unit time period.

[0069] The database is used to record the electricity consumption data of each smart meter within a preset range. In this embodiment, the preset range is a single urban area, and the electricity consumption data of each preset range is classified based on different time periods;

[0070] The comparison module compares the data of each time period of the smart meter within the same preset range, obtains the fluctuation value between each adjacent time period, establishes a model for the fluctuation value of the smart meter within the same preset range, and calculates the average fluctuation value;

[0071] The matching of smart meters and records includes the following matching results:

[0072] A1: If the marked smart meter is recorded as unoccupied in the record sheet, the mark of the smart meter will be cancelled;

[0073] A2: If the marked smart meter is recorded as occupied in the record sheet, the mark of the smart meter will be upgraded to "suspected of electricity theft".

[0074] And the comparison module marks the smart meters whose values ​​are less than the average value for 5 consecutive time units;

[0075] The "abnormal" mark and "suspected electricity theft" mark of a single smart meter are counted. When the number of "abnormal" marks and "suspected electricity theft" marks exceeds 3 and 2 times respectively, the main control layer will issue a prompt message.

[0076] Example 2

[0077] An anti-electricity theft system for an electric power system includes a local layer, a master control layer and a personal terminal, wherein the personal terminal is a device held by a worker when inspecting an electric meter;

[0078] The local layer includes recognition module, flash recognition module, and transmission module;

[0079] The identification module is used to identify the opening action, opening time, opening duration and opening signature of the smart meter;

[0080] The method for opening the cover and identifying the signature comprises the following steps:

[0081] S1: The staff connects the identification end of their personal terminal to the identification module of the corresponding smart meter;

[0082] S2: The identification module identifies and packages the identification code of the identification end, and transmits it to the master control layer through the transmission module;

[0083] S3: The master control layer unpacks and identifies the identification code. After the identification is successful, the authorization code is sent to the corresponding smart meter.

[0084] S4: After receiving the authorization code, the smart meter does not mark the cover opening action.

[0085] In step S2, after the identification code is packaged, the identification module combines the package code with the identification code and sends it to the master control layer.

[0086] The duration of opening the cover is the time difference between the execution time of the opening action and the execution time of the closing action.

[0087] The flash recognition module includes a group of sending units and multiple recognition units, each recognition unit is provided with a corresponding mark code;

[0088] After each opening and closing of the cover at the cover opening position, the identification units randomly switch to a group to identify with the sending unit, and send the identification unit mark code used for identification to the master control layer through the transmission module;

[0089] The sending unit is bound to the cover opening of the smart meter, and the identification unit is bound to the body of the smart meter;

[0090] When the cover part and the body part of the smart meter are closed, the sending unit is connected to the first group of identification units, and the group of identification units transmits the connection signal to the identification module;

[0091] After the cover opening part and the body part of the smart meter undergo the cover opening-closing steps, the sending unit switches to the identification unit;

[0092] Before the cover of the smart meter is opened, it is connected to the personal terminal. After the cover of the smart meter is opened, the sending unit is disconnected from the first group of identification units, and the second group of identification units among the multiple identification units are randomly switched to connect with the cover after closing, and the second group of identification units transmit their own mark codes to the personal terminal through the transmission module;

[0093] After receiving the mark code of the second group of identification units, the personal terminal transmits the mark code as code I to the master control layer. After the cover of the smart meter is closed again, the corresponding identification unit transmits its own mark code as code II to the master control layer through the identification module.

[0094] The master control layer compares code I with code II. If code I is missing or code I does not match code II, the opening action is marked as "abnormal".

[0095] The general control layer includes recording module, database and comparison module;

[0096] The recording unit is used to record the information of the corresponding smart meter user and establish a record table;

[0097] The record includes whether there is someone living in the unit time. This information is collected by the staff during the unit time. In this embodiment, the unit time is the door-to-door inspection cycle specified by the power supply unit. During the door-to-door inspection within the unit time, if someone opens the door normally, it is marked as someone living in the unit time period.

[0098] The database is used to record the electricity consumption data of each smart meter within a preset range. In this embodiment, the preset range is a single street. The electricity consumption data of each preset range is classified based on different time periods. Each time period adopts March to June, June to September, September to December, and December to March, representing the four seasons of spring, summer, autumn, and winter.

[0099] The comparison module compares the data of each time period of the smart meter within the same preset range, obtains the fluctuation value between each adjacent time period, establishes a model for the fluctuation value of the smart meter within the same preset range, and calculates the average fluctuation value;

[0100] The matching of smart meters and records includes the following matching results:

[0101] A1: If the marked smart meter is recorded as unoccupied in the record sheet, the mark of the smart meter will be cancelled;

[0102] A2: If the marked smart meter is recorded as occupied in the record sheet, the mark of the smart meter will be upgraded to "suspected of electricity theft".

[0103] And the comparison module marks the smart meters whose values ​​are less than the average value for 5 consecutive time units;

[0104] The "abnormal" mark and "suspected electricity theft" mark of a single smart meter are counted. When the number of "abnormal" marks and the number of "suspected electricity theft" marks exceed 1 and 1 respectively, the main control layer will issue a prompt message.

[0105] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of this template.

Claims

1. A power system anti-electricity theft system, characterized in that: Includes local layer, master control layer and personal terminal; The local layer includes recognition module, flash recognition module, and transmission module; The identification module is used to identify the opening action, opening time, opening duration and opening signature of the smart meter; The flash recognition module includes a group of sending units and multiple recognition units, each recognition unit is provided with a corresponding mark code; After each opening and closing of the cover at the cover opening position, the identification units randomly switch to a group to identify with the sending unit, and send the identification unit mark code used for identification to the master control layer and the personal terminal through the transmission module; The personal terminal then transmits the received marking code to the master control layer, which compares the two sets of marking codes; After the cover opening part and the body part of the smart meter undergo the cover opening-closing steps, the sending unit switches to the identification unit; The general control layer includes recording module, database and comparison module; The recording unit is used to record the information of the corresponding smart meter user and establish a record table; The database is used to record the electricity consumption data of each smart meter within a preset range, and the electricity consumption data of each preset range is classified based on different time periods; The comparison module compares the data of each time period of the smart meter within the same preset range, obtains the fluctuation value between each adjacent time period, establishes a model for the fluctuation value of the smart meter within the same preset range, and calculates the average fluctuation value; And the comparison module marks the smart meters whose values ​​are smaller than the average value for n consecutive time units.

2. The power system anti-electricity theft system according to claim 1, characterized in that: The method for opening the cover and identifying the signature comprises the following steps: S1: The staff connects the identification end of the personal terminal to the identification module of the corresponding smart meter; S2: The identification module identifies and packages the identification code of the identification end, and transmits it to the master control layer through the transmission module; S3: The master control layer unpacks and identifies the identification code. After the identification is successful, the authorization code is sent to the corresponding smart meter. S4: After receiving the authorization code, the smart meter does not mark the cover opening action.

3. The anti-electricity theft system of a power system according to claim 2, characterized in that: The master control layer updates the unpacking key at a fixed time period, and after the unpacking key is updated, the master control layer transmits the packaging code corresponding to the unpacking key to the identification module; In step S2, after the identification code is packaged, the identification module combines the package code with the identification code and sends it to the master control layer.

4. The power system anti-electricity theft system according to claim 1, characterized in that: The sending unit is bound to the cover opening of the smart meter, and the identification unit is bound to the body of the smart meter; Before the cover of the smart meter is opened, it is connected to the personal terminal. After the cover of the smart meter is opened, the sending unit is disconnected from the first group of identification units, and the second group of identification units among the multiple identification units are randomly switched to connect with the cover after closing, and the second group of identification units transmit their own mark codes to the personal terminal through the transmission module; After receiving the mark code of the second group of identification units, the personal terminal transmits the mark code as code I to the master control layer. After the cover of the smart meter is closed again, the corresponding identification unit transmits its own mark code as code II to the master control layer through the identification module. The master control layer compares code Ⅰ and code Ⅱ. If code Ⅰ is missing or code Ⅰ does not match code Ⅱ, the opening action is marked as "abnormal".

5. The power system anti-electricity theft system according to claim 1, characterized in that: The record includes whether there is someone living in the house during the unit time. This information is collected by the staff through on-site inspection within the unit time. When the staff conducts on-site inspection within the unit time, if someone opens the door normally, it is marked as someone living in the house during the unit time period.

6. The anti-electricity theft system of a power system according to claim 5, characterized in that: The matching of smart meters and records includes the following matching results: A1: If the marked smart meter is recorded as unoccupied in the record sheet, the mark of the smart meter will be cancelled; A2: If the marked smart meter is recorded as someone living in the record sheet, the mark of the smart meter will be upgraded to "suspected of electricity theft".

7. The power system anti-electricity theft system according to claim 1, characterized in that: The "abnormal" mark and "suspected electricity theft" mark of a single smart meter are counted. When the number of "abnormal" marks and "suspected electricity theft" marks exceeds a1 and a2 respectively, the main control layer issues a prompt message, where a1 and a2 are both positive integers greater than 0.

8. A method for preventing electricity theft in a power system according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: Step 1: When the staff comes to inspect the smart meter, they record whether the household corresponding to the smart meter is occupied; Step 2: The anti-electricity theft system monitors the opening action of the smart meter, assigns an "abnormal" mark to the opening action that does not meet the requirements, and transmits it to the master control layer; Step 3: The master control layer of the anti-electricity theft system classifies and compares the electricity consumption data transmitted by each smart meter within the preset range, obtains the smart meters that do not meet the preset data, and assigns them a "suspected electricity theft" mark; Step 4: Count the number of "abnormal" marks and "suspected electricity theft" marks of a single smart meter, and issue a prompt message to the smart meter that exceeds the preset number.

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