Electricity larceny prevention metering device

Abstract

The utility model relates to an electricity larceny prevention metering device, and belongs to the technical field of power equipment. In order to overcome the defect that an existing electricity larceny prevention metering box cannot completely prevent electricity larceny, the electricity larceny prevention metering device is used in cooperation with an electricity utilization information acquisition system, comprises a transformer electricity larceny prevention metering box and an electric energy meter electricity larceny prevention metering box, and is characterized in that the transformer electricity larceny prevention metering box is installed on the low-voltage side of a transformer; limiting switches are installed in the transformer electricity larceny prevention metering box and the electric energy meter electricity larceny prevention metering box, and an electric energy meter and a special transformer acquisition terminal are installed in the electric energy meter electricity larceny prevention metering box. The limit switch in the transformer electricity larceny prevention metering box and the limit switch in the electric energy meter electricity larceny prevention metering box are connected with the special transformer acquisition terminal; according to the electricity larceny prevention metering device, the double-layer lock is adopted, the opening moment of the box cover can be found in time, whether the electricity larceny behavior exists or not can be found in time, and electricity larceny can be completely prevented.

Description

Technical Field

[0001] This utility model relates to an anti-theft electricity metering device, belonging to the field of power equipment technology. Background Technology

[0002] Electricity theft is a frequent problem in the metering boxes currently used in the power industry. This theft not only wastes electrical resources but also threatens the safe and stable operation of the power system.

[0003] Currently, the main methods of electricity theft include: loosening the current transformer nut to steal electricity, short-circuiting the secondary wiring of the current transformer to steal electricity, short-circuiting the current connection piece at the junction box to steal electricity, and bypassing the metering device to steal electricity.

[0004] Patent CN220855009U discloses an anti-theft electricity metering box. Specifically, the box door is movably connected to the box body via a lock on the other side. An anti-theft cover is installed on a mounting rail, located outside the circuit breaker. The anti-theft cover is rectangular, with its opening facing the box body. The side of the cover facing the electricity meter is open, fitting over the outside of the meter's terminals. The anti-theft cover effectively covers the meter's terminals, and the gap between the cover and the terminals is very small, preventing tools from reaching in and thus preventing electricity theft from the meter's terminals. However, this method is not entirely secure; thieves can use other tools to widen the gap between the cover and the terminals, making it still not very safe. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing anti-theft metering boxes that cannot completely prevent electricity theft, and to provide an anti-theft metering device. This device uses a double-layer lock, which can detect the theft the moment the box lid is opened, thus completely preventing electricity theft.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] The anti-theft electricity metering device, used in conjunction with an electricity consumption information collection system, includes a transformer anti-theft electricity metering box and an electricity meter anti-theft electricity metering box. Its special feature is that the transformer anti-theft electricity metering box is installed on the low-voltage side of the transformer; both the transformer anti-theft electricity metering box and the electricity meter anti-theft electricity metering box are equipped with limit switches; the electricity meter anti-theft electricity metering box contains an electricity meter and a dedicated transformer data acquisition terminal; and the limit switches in the transformer anti-theft electricity metering box and the electricity meter anti-theft electricity metering box are electrically connected to the dedicated transformer data acquisition terminal.

[0008] Preferably, the limit switches in the transformer anti-theft metering box and the limit switches in the electricity meter anti-theft metering box are connected in series to the port of the special transformer acquisition terminal control module via an RS485 communication line.

[0009] Preferably, the transformer anti-theft metering box includes a box body A and a box cover A, the limit switch is installed on the inner side of the connection between the box body A and the box cover A, and the box cover A is a transparent protective cover;

[0010] Preferably, the anti-theft meter box includes a box body B and a box cover B. The limit switch is installed on the inner side of the connection between the box body B and the box cover B. The electricity meter is installed in the box body B. A dedicated transformer data acquisition terminal is installed in the box body B on one side of the electricity meter.

[0011] Preferably, locks are provided on the outer sides of the box body A and the box cover A, and on the outer sides of the box body B and the box cover B;

[0012] Preferably, the limit switch is a miniature roller rocker arm type micro limit switch;

[0013] Preferably, when the transformer anti-theft metering box and the electricity meter anti-theft metering box are closed, the limit switch is closed and in the normally open state; when the transformer anti-theft metering box and the electricity meter anti-theft metering box are opened, the limit switch returns to the normally closed state.

[0014] Preferably, when the normally open port of the dedicated transformer acquisition terminal control module is closed, an event is triggered and submitted to the electricity consumption information acquisition system.

[0015] This utility model's anti-theft metering device offers some protection against electricity theft using undervoltage, undercurrent, and phase-shifting methods. It is suitable for users of high-voltage, low-metering transformers. The device features two layers of protection: a lock and a limit switch. Upon detecting an opening, maintenance personnel must record the reason for the opening and the handling details within one working day. Failure to record a reason raises suspicion of electricity theft, requiring equipment management personnel to verify the cause on-site and report to the marketing department's inspection team. Timely detection of electricity theft allows for immediate notification to regulatory authorities, minimizing electricity loss and maintaining normal power usage. The device can determine the legality of opening the distribution metering box, enabling timely measures to prevent theft and improving the efficiency of electricity inspections and the level of power management.

[0016] This device is low in cost, easy to install, and can be installed while energized. It solves the technical problem of extracting feature parameters under complex operating conditions, and improves the electricity theft detection rate and the efficiency and level of power management. Attached Figure Description

[0017] Figure 1 : A schematic diagram of the structure of this utility model.

[0018] In the diagram: 1. Transformer anti-theft metering box, 2. Electricity meter anti-theft metering box, 3. Transformer, 4. Limit switch, 5. Electricity meter, 6. Special transformer data acquisition terminal, 7. RS485 communication line. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments of the present utility model. All other embodiments obtained by those skilled in the art without creative labor are within the protection scope of the present utility model.

[0020] Example 1. As... Figure 1 The anti-theft electricity metering device shown is used in conjunction with an electricity information collection system. It includes a transformer anti-theft electricity metering box 1 and an electricity meter anti-theft electricity metering box 2. The transformer anti-theft electricity metering box 1 is installed on the low-voltage side of the transformer 3. Limit switches 4 are installed in both the transformer anti-theft electricity metering box 1 and the electricity meter anti-theft electricity metering box 2. An electricity meter 5 and a dedicated transformer data acquisition terminal 6 are installed in the electricity meter anti-theft electricity metering box 2. The limit switches 4 in the transformer anti-theft electricity metering box 1 and the electricity meter anti-theft electricity metering box 2 are electrically connected to the dedicated transformer data acquisition terminal 6.

[0021] The limit switch 4 in the transformer anti-theft metering box 1 and the limit switch 4 in the electricity meter anti-theft metering box 2 are connected in series to the port of the control module of the special transformer acquisition terminal 6 via RS485 communication line 7.

[0022] The transformer anti-theft metering box 1 includes a box body A and a box cover A. The limit switch is installed on the inner side of the connection between the box body A and the box cover A. The box cover A is a transparent protective cover.

[0023] The anti-theft meter box 2 includes a box body B and a box cover B. The limit switch is installed on the inner side of the connection between the box body B and the box cover B. An electricity meter 5 is installed in the box body B. A special transformer data acquisition terminal 6 is installed in the box body B on one side of the electricity meter 5.

[0024] In this embodiment, the energy meter 5 is a DTZY545-Z type three-phase four-wire prepaid smart energy meter, and the special transformer data acquisition terminal 6 is a FKGA23-HLM8204 type special transformer data acquisition terminal.

[0025] Locks are provided on the outer sides of box A and box cover A, and on the outer sides of box B and box cover B.

[0026] In this embodiment, the lock is secured with steel bars.

[0027] Among them, the limit switch 4 is a miniature roller rocker arm type micro limit switch;

[0028] Specifically, when the transformer anti-theft metering box 1 and the electricity meter anti-theft metering box 2 are closed, the limit switch 4 is closed and in the normally open state; when the transformer anti-theft metering box 1 and the electricity meter anti-theft metering box 2 are opened, the limit switch 4 returns to the normally closed state.

[0029] When the normally open port of the control module of the dedicated transformer acquisition terminal 6 is closed, an event is triggered and submitted to the electricity information acquisition system.

[0030] The working principle of this utility model is as follows: When in use, the limit switch 4 is installed inside the transformer anti-theft metering box 1 and the electricity meter anti-theft metering box 2, and the lock is installed on the outside. The limit switches 4 in the transformer anti-theft metering box 1 and the electricity meter anti-theft metering box 2 are connected in series to the port of the control module of the dedicated transformer acquisition terminal 6 through the RS485 communication line 7. When the electricity thief opens the lock and opens the transformer anti-theft metering box 1 and the electricity meter anti-theft metering box 2, the limit switch 4 will transmit the signal to the control module of the dedicated transformer acquisition terminal 6. The dedicated transformer acquisition terminal 6 submits the information to the electricity information acquisition system. The monitoring personnel will see the warning information on the electricity information acquisition system on the computer, and then notify the equipment operation and maintenance personnel to check on-site. Timely and real-time monitoring can detect the existence of electricity theft as soon as possible and effectively prevent electricity theft.

[0031] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-theft electricity metering device, used in conjunction with an electricity information collection system, comprising a transformer anti-theft electricity metering box (1) and an electricity meter anti-theft electricity metering box (2), characterized in that: The transformer anti-theft metering box (1) is installed on the low-voltage side of the transformer (3). Limit switches (4) are installed in both the transformer anti-theft metering box (1) and the electricity meter anti-theft metering box (2). An electricity meter (5) and a special transformer data acquisition terminal (6) are installed in the electricity meter anti-theft metering box (2). The limit switches (4) in the transformer anti-theft metering box (1) and the electricity meter anti-theft metering box (2) are electrically connected to the special transformer data acquisition terminal (6).

2. The anti-theft electricity metering device according to claim 1, characterized in that: The limit switch (4) in the transformer anti-theft metering box (1) and the limit switch (4) in the electricity meter anti-theft metering box (2) are connected in series to the port of the control module of the special transformer acquisition terminal (6) via RS485 communication line (7).

3. The anti-theft electricity metering device according to claim 1 or 2, characterized in that: The transformer anti-theft metering box (1) includes a box body A and a box cover A, and the limit switch (4) is installed on the inner side of the connection between the box body A and the box cover A.

4. The anti-theft electricity metering device according to claim 3, characterized in that: The box cover A is a transparent protective cover.

5. The anti-theft electricity metering device according to claim 3, characterized in that: The anti-theft meter box (2) includes a box body B and a box cover B. The limit switch is installed on the inner side of the connection between the box body B and the box cover B. An electricity meter (5) is installed in the box body B. A special transformer acquisition terminal (6) is installed in the box body B on one side of the electricity meter (5).

6. The anti-theft electricity metering device according to claim 5, characterized in that: Locks are provided on the outer sides of box A and box cover A, and on the outer sides of box B and box cover B.

7. The anti-theft electricity metering device according to claim 3, characterized in that: The limit switch (4) is a miniature roller rocker arm type micro limit switch.

8. The anti-theft electricity metering device according to claim 7, characterized in that: When the normally open port of the control module of the special transformer acquisition terminal (6) is closed, an event is triggered and submitted to the electricity information acquisition system.

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