Comprehensive training device for metering anti-theft and anti-violation
By designing a comprehensive training device for metering and anti-theft detection, and simulating new types of injection-based electricity theft, anti-theft skills have been improved. This solves the problem that existing training devices cannot effectively demonstrate new types of electricity theft, ensuring the stable operation of the power system and economic benefits.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG COLLEGE OF ELECTRIC POWER
- Filing Date
- 2025-05-28
- Publication Date
- 2026-05-15
AI Technical Summary
Existing anti-electricity theft training devices cannot effectively simulate and demonstrate new types of injection-based electricity theft, resulting in insufficient anti-electricity theft skills among staff, making it difficult to identify and investigate concealed electricity theft activities, and posing a threat to the stable operation of power supply companies and the power system.
A comprehensive training device for metering anti-theft and illegal detection was designed, which includes a human-computer interaction unit, an electricity meter, a current transformer, and an electricity consumption scenario control unit. It can simulate the entire process of a new type of injection-type electricity theft, display electricity theft cases, and perform analysis of electricity theft points inside the electricity meter and simulation of secondary side miswiring faults.
By visually demonstrating the new injection-based electricity theft process, the anti-electricity theft skills of staff have been improved, enabling them to quickly identify and investigate electricity theft, thus ensuring the stability of the power system and protecting economic interests.
Smart Images
Figure CN224248206U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of anti-electricity theft training technology, and in particular to a comprehensive training device for metering anti-theft and violation detection. Background Technology
[0002] In the power industry, combating electricity theft is crucial for protecting the economic interests of power grid companies, maintaining fairness and impartiality in the electricity market, and ensuring the stable operation of the power system. With the development of power technology and the growth of social electricity demand, electricity theft has become increasingly diversified and covert.
[0003] Anti-electricity theft refers to the detection, prevention, and deterrence of illegal electricity theft by users through various technical means and management measures. Its purpose is to maintain the normal metering and billing order of the power system and protect the rights and interests of power supply companies and legitimate electricity users. Traditional anti-electricity theft work mainly relies on manual inspection and some relatively simple technical equipment, and is capable of dealing with common electricity theft methods, such as directly bypassing metering devices and altering metering device wiring.
[0004] However, in recent years, a new type of injection-based electricity theft method has emerged. This method involves injecting direct current or half-wave current into the primary side of an instrument transformer. Taking advantage of the electromagnetic transformer's magnetic saturation under the influence of the direct current component, it disrupts the transformer's metering accuracy, thus achieving the goal of stealing electricity with less measurement. It does not touch the meter box seal or the meter itself, employing a remote attack on the transformer, making this electricity theft extremely covert.
[0005] Existing anti-electricity theft technologies and devices mostly rely on direct inspection and monitoring of the metering devices themselves, making it difficult to detect such remote and covert electricity theft. Furthermore, existing anti-electricity theft training equipment is relatively outdated and cannot effectively simulate and train personnel on new injection-type electricity theft methods. This results in insufficient anti-electricity theft skills among staff, hindering their ability to quickly and accurately identify and prosecute such activities. This not only causes economic losses for power supply companies but also poses a potential threat to the stable operation of the power system. Utility Model Content
[0006] To address the shortcomings of existing technologies, this utility model provides a comprehensive training device for metering anti-theft and illegal detection. It intuitively presents the entire process of novel injection-type electricity theft through comparison of different current transformers. It can also conduct analysis and training demonstrations of multiple electricity theft points inside the electricity meter, as well as conduct secondary side wiring error analysis, electricity theft type case demonstrations, and case video teaching.
[0007] To achieve the above objectives, the present invention adopts the following technical solution:
[0008] A comprehensive training device for measuring anti-theft and illegal detection includes: a cabinet, on which an upper module, a middle module and a lower module are provided; the upper module is electrically connected to the middle module and the lower module respectively;
[0009] The upper module includes a human-machine interface unit for displaying electricity theft cases, adjusting the DC current injection ratio, and displaying distortion effects and multiplier changes. The middle module includes an energy meter and a secondary metering circuit. The energy meter displays voltage, current, and power, and the secondary metering circuit simulates various fault conditions. The lower module includes a current transformer and a power consumption scenario control unit. The current transformer is electrically connected to the power consumption scenario control unit, which switches between different operating modes to simulate different power consumption conditions.
[0010] As a further technical solution, the human-computer interaction unit includes a control panel and touch points for electricity theft cases. The control panel is used to set the injection ratio and display the distortion effect and magnification change value; the touch points for electricity theft cases are provided in several places.
[0011] As a further technical solution, the injection ratio is set to: 0%, 20%, 50%, 80%, and 100%.
[0012] As a further technical solution, the electricity meter is a disassembled three-phase four-wire electricity meter, which is used to display multiple electricity theft points inside the electricity meter, and the electricity meter and the secondary metering circuit are electrically connected.
[0013] As a further technical solution, the secondary metering circuit adopts a jumper connection method, and the secondary metering circuit is used to simulate various fault conditions, including: phase reversal fault, current shunting fault, and reverse connection fault.
[0014] As a further technical solution, the current transformer adopts a three-phase current transformer of type A, B and C, which are respectively a wide-range current transformer, a high-precision current transformer and a DC-resistant current transformer.
[0015] As a further technical solution, the primary side of the three-phase current transformers A, B, and C is electrically connected to the power consumption scenario control unit, and the secondary side of the three-phase current transformers A, B, and C is electrically connected to the secondary metering circuit.
[0016] As a further technical solution, the power consumption scenario control unit includes a normal state current scenario, an injected DC current scenario, and a rectification scenario.
[0017] As a further technical solution, the upper module, middle module and lower module adopt an integrated design.
[0018] As a further technical solution, casters are installed at the four corners of the cabinet.
[0019] One or more technical solutions of this utility model have the following beneficial effects:
[0020] (1) The current transformers in this utility model are three-phase current transformers of type A, B, and C, which are respectively wide-range current transformers, high-precision current transformers, and DC-resistant current transformers. Each type of current transformer has unique design features and can accurately exhibit different measurement errors and response characteristics under different working environments and DC injection conditions. Therefore, by combining these three types of transformers, the device can conduct a detailed study on the impact of DC injection on different types of transformers, and can intuitively see the differences in the impact of the new injection-type electricity theft on different types of transformers, thereby improving the understanding of the new injection-type electricity theft and enhancing anti-electricity theft skills.
[0021] (2) This utility model is designed with an electricity usage scenario control unit, which can flexibly switch between three electricity usage scenarios: normal current scenario, injected DC current scenario, and rectified scenario. This allows the device to flexibly switch between different operating modes as needed during training, thereby simulating and studying the impact of various electricity usage conditions on system performance and improving the ability to detect electricity theft.
[0022] (3) This utility model adopts a disassembled three-phase four-wire energy meter design, which can conduct analysis and research on multiple electricity theft points inside the energy meter and provide training and demonstration, and quickly and accurately identify and investigate them.
[0023] (4) The design of the secondary metering circuit of this utility model is used to simulate and analyze various fault conditions in the power system. Through this circuit, it is possible to simulate various fault conditions such as phase reversal, current shunting, and reverse connection, and then evaluate the impact of DC injection on the stability, equipment operation and safety of the power system. Attached Figure Description
[0024] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.
[0025] Figure 1 This is the front view of the comprehensive training device for measuring anti-theft and illegal detection of this utility model.
[0026] The components include: 1. Control panel; 2. Touch points for electricity theft cases; 3. Electricity meter; 3-1. Upper layer of three-phase four-wire electricity meter; 3-2. Lower layer of disassembled three-phase four-wire electricity meter; 4. Wide-range current transformer; 5. High-precision current transformer; 6. DC current transformer; 7. Electricity consumption scenario control unit; 8. Secondary metering circuit. Detailed Implementation
[0027] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.
[0028] Example 1
[0029] This utility model provides a comprehensive training device for anti-theft and anti-violation of metering systems. It is a comprehensive training and research equipment for anti-theft and anti-violation of the entire metering system and complies with the published State Grid Corporation of China enterprise standard (Q / GDW 12336—2023).
[0030] like Figure 1 As shown, a comprehensive training device for measurement anti-theft and violation detection includes: a cabinet, with casters installed at the four corners of the cabinet, and an integrated upper module, middle module and lower module on the cabinet, wherein the upper module is electrically connected to the middle module and the lower module respectively.
[0031] The upper module includes a human-computer interaction unit that can display various cases of electricity theft, realize the display of different types of electricity theft cases and case video teaching; it can also control the amount of new types of injected electricity theft, realize the adjustment of the DC current injection ratio; it can also display the distortion effect after injection through waveform display and give the multiplier change value of remote attack metering unit (current transformer).
[0032] Specifically: The human-computer interaction unit includes a control panel and a touch point for electricity theft cases. The main function of the control panel is to ensure that the system can operate stably in different working modes by precisely adjusting the injection ratio of DC current, as well as to display the distortion effect and the multiplier change value. The control panel allows users to select and set different injection ratios, with the specific adjustable ranges being 0%, 20%, 50%, 80%, and 100%.
[0033] There are several touch points for electricity theft cases. Clicking on an electricity theft case touch point will display various electricity theft cases on the control panel, enabling the display of electricity theft case types and case video tutorials.
[0034] The intermediate module includes an energy meter and a secondary metering circuit. The energy meter is used to display voltage, current and power, while the secondary metering circuit is used to simulate and analyze various fault conditions in the power system.
[0035] The electricity meter is a detachable three-phase four-wire meter (two layers), specifically consisting of an upper and a lower layer. This allows the meter to display real-time data such as voltage, current, and power for each phase. This design facilitates precise monitoring of the actual impact of DC injection on various electrical components, provides multiple electricity metering data updates, and allows users to perform data analysis. Furthermore, the detachable three-phase four-wire meter can display multiple points of electricity theft within the meter, enabling analysis, research, and training demonstrations on these points, allowing for rapid and accurate identification and prosecution. The electrical connection between the detachable three-phase four-wire meter and the secondary metering circuit uses a jumper wiring method, flexibly enabling analysis of metering errors and research and training on their impact on metering and billing results. The secondary metering circuit simulates various fault scenarios, including phase reversal faults, current shunt faults, and reverse connection faults, thereby assessing the impact of DC injection on power system stability, equipment operation, and safety.
[0036] The lower module includes a current transformer and a power consumption scenario control unit. The current transformer is electrically connected to the power consumption scenario control unit, which is used to switch between different working modes to simulate different power consumption conditions.
[0037] Specifically, the instrument transformers used are three-phase current transformers: A, B, and C. These represent wide-range current transformers, high-precision current transformers, and DC-resistant current transformers, respectively. Each type of current transformer has unique design features, enabling it to accurately exhibit different measurement errors and response characteristics under different operating environments and DC current injection conditions. Therefore, by combining these three types of transformers, the device can conduct a detailed study on the impact of DC injection on different types of transformers. Detailed test data are shown in Table 1.
[0038] Table 1. DC Injection Test Results
[0039]
[0040]
[0041] In this embodiment, the primary side of the three-phase current transformers A, B, and C is electrically connected to the power consumption scenario control unit. The primary side electrical connection to the power consumption scenario control unit is used to acquire the current in the power consumption scenario, allowing the current to pass through the primary winding of the transformer to generate an alternating magnetic field, thereby realizing the acquisition of the current signal in the power consumption scenario, so as to study the impact of DC injection on the transformer.
[0042] The secondary side of the three-phase current transformers A, B, and C is electrically connected to the secondary metering circuit. The secondary metering circuit is used to transmit the induced current generated in the secondary winding after the primary current is electromagnetically induced by the transformer. This current carries the primary current information, and the secondary metering circuit uses this information to simulate and analyze power system faults and assess the impact of DC injection on power system stability, equipment operation, and safety.
[0043] The power consumption scenario control unit is used to switch between different operating modes, specifically including normal current scenario, injected DC current scenario, and rectification scenario. Through this control unit, users can flexibly switch between different operating modes as needed during experiments, thereby simulating and studying the impact of various power consumption conditions on system performance.
[0044] The working process or principle of the integrated training device for metrological anti-theft and violation detection provided in this embodiment is as follows:
[0045] After the integrated training device is turned on, the control panel will play the "Preparation Before Departure" video by default; touch the electricity theft case touch point at the bottom of the control panel to display various electricity theft cases, realizing the display of electricity theft case types and case video teaching;
[0046] During video playback, clicking the control panel will take you to the DC injection operation interface. The interface offers a sliding selection bar and quick selection of fixed percentage values (0%, 20%, 50%, 80%, 100%) to set the injection ratio. Clicking the injection button on the right issues the command. The system monitors current changes and compares data changes under different injection levels, enabling real-time data feedback and analysis.
[0047] The control panel precisely adjusts the DC current injection ratio to ensure stable system operation. The energy meter displays real-time data such as phase voltage, current, and power, facilitating the analysis of the impact on electrical components and data analysis. Three-phase current transformers of different models (wide range, high precision, DC resistance) are used in combination to study the impact of DC injection on different transformers. The power consumption scenario control module switches between three scenarios: normal, DC current injection, and rectification, simulating different power consumption conditions. The secondary metering circuit simulates faults such as phase reversal, current shunt, and reverse connection to evaluate the impact of DC injection on power system stability, equipment operation, and safety.
[0048] Users can use the device to learn about new types of injection-type electricity theft phenomena and principles, study the electricity theft points inside the electricity meter, analyze the impact of secondary wiring errors on metering and billing results, master on-site inspection and anti-electricity theft methods, and improve their anti-electricity theft skills.
[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A comprehensive training device for measurement-based anti-theft and illegal detection, characterized in that, include: The cabinet has an upper module, a middle module, and a lower module; the upper module is electrically connected to the middle module and the lower module, respectively. The upper module includes a human-machine interface unit for displaying electricity theft cases, adjusting the DC current injection ratio, and displaying distortion effects and multiplier changes. The middle module includes an energy meter and a secondary metering circuit. The energy meter displays voltage, current, and power, and the secondary metering circuit simulates various fault conditions. The lower module includes a current transformer and a power consumption scenario control unit. The current transformer is electrically connected to the power consumption scenario control unit, which switches between different operating modes to simulate different power consumption conditions.
2. The integrated training device for measurement anti-theft and violation detection as described in claim 1, characterized in that, The human-computer interaction unit includes a control panel and touch points for electricity theft cases. The control panel is used to set the injection ratio and display the distortion effect and magnification change value; there are several touch points for electricity theft cases.
3. The integrated training device for measurement-based anti-theft and violation detection as described in claim 2, characterized in that, The injection ratios are set to 0%, 20%, 50%, 80%, and 100%.
4. The integrated training device for measurement anti-theft and violation detection as described in claim 1, characterized in that, The electricity meter is a disassembled three-phase four-wire electricity meter, used to display multiple electricity theft points inside the electricity meter, and the electricity meter and the secondary metering circuit are electrically connected.
5. The integrated training device for measurement-based anti-theft and violation detection as described in claim 4, characterized in that, The secondary metering circuit adopts a jumper connection method. The secondary metering circuit is used to simulate various fault conditions, including phase reversal fault, current shunting fault, and reverse connection fault.
6. The integrated training device for measurement-based anti-theft and violation detection as described in claim 1, characterized in that, The current transformers used are three-phase current transformers of type A, B, and C, which are respectively wide-range current transformers, high-precision current transformers, and DC-resistant current transformers.
7. The integrated training device for measurement-based anti-theft and violation detection as described in claim 6, characterized in that, The primary side of the three-phase current transformers A, B, and C is electrically connected to the power consumption scenario control unit, and the secondary side of the three-phase current transformers A, B, and C is electrically connected to the secondary metering circuit.
8. The integrated training device for measurement-based anti-theft and violation detection as described in claim 7, characterized in that, The power consumption scenario control unit includes a normal current scenario, an injected DC current scenario, and a rectification scenario.
9. A comprehensive training device for measurement-based anti-theft and violation detection as described in claim 1, characterized in that, The upper module, middle module and lower module are designed as an integrated unit.
10. A comprehensive training device for measurement-based anti-theft and violation detection as described in claim 1, characterized in that, The cabinet is equipped with casters at the four corners below.