Electricity stealing simulation display system based on user load simulation
Through the power stolen simulation display system based on user load simulation, the power stolen method of DC and half-wave rectification is simulated, and the metering data and errors of the power meter are displayed in real time, which solves the problem of difficult simulation of power stolen behavior in the existing technology, and improves the The ability to identify and prevent electricity theft.
Patent Information
- Application Number
- CN202411551722.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-01-03
AI Technical Summary
The prior art is difficult to effectively simulate and demonstrate power theft, especially when user loads are complex, resulting in increased difficulty in training and troubleshooting power theft.
A system for power stolen simulation based on user load simulation was designed, including control module, display module, line simulation module, current mutual inductance module and metering simulation module, to simulate DC and half-wave rectification of power stolen, and to display electric energy in real time The measurement data and error conditions of the table are combined with data analysis and virtual simulation to realize the simulation and analysis of power theft behavior.
The system allows students to intuitively understand the principles and dangers of power theft, extract the characteristics of power theft through data analysis, provide anti-power theft reference, and improve the ability to identify and prevent power theft behavior.
Smart Images
Figure CN119252093A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electricity theft simulation teaching, and more particularly to an electricity theft simulation display system based on user load simulation. Background Art
[0002] Electricity theft refers to the act of illegally occupying electrical energy, not paying or paying less electricity bills, and using illegal means to not measure or under-measure electricity usage. Since electricity theft often requires changes to the circuit, this not only causes economic losses to power supply companies, but is also likely to endanger social security. Therefore, it is necessary to investigate electricity theft. At present, the means of electricity theft are diverse and increasingly hidden, requiring staff to have a high level of professionalism. It is very important to train power workers, trainees and other staff. Therefore, how to provide an electricity theft simulation display system based on user load simulation is an urgent problem that technicians in this field need to solve. Summary of the invention
[0003] In view of this, the present invention provides an electricity theft simulation display system based on user load simulation, which simulates the electricity theft method of DC injection and half-wave rectification. The control and display module displays the metering data of the electric energy meter and the error caused by the electricity theft in real time.
[0004] In order to achieve the above object, the present invention provides the following technical solutions:
[0005] A power theft simulation display system based on user load simulation comprises: a control module, a display module, a line simulation module, a current mutual inductance module, a metering simulation module and a load simulation module, wherein the control module is respectively connected with the display module, the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module; the control module is used to control the operation of the power theft simulation display system; the display module is used to display an operation interface; the line simulation module is respectively connected with the metering simulation module and the load simulation module; the line simulation module simulates a high-supply and low-meter line loop; the metering simulation module measures the output of the current mutual inductance module; and the load simulation module simulates the user load.
[0006] Optionally, the load simulation module includes a normal user load unit, a DC injected electricity stealing user load unit and a half-wave rectifier electricity stealing user load unit. The normal user load unit simulates the load of a normal user and simulates the user load under the condition of DC current injection. The half-wave rectifier electricity stealing user load unit simulates the user load that rectifies AC power using a half-wave rectifier circuit.
[0007] Optionally, when the control module starts the DC injection and electricity theft simulation, DC current is injected into the main circuit on the user load side of the DC injection and electricity theft user load unit. The injected DC current saturates the current mutual inductance module and reduces the magnetic permeability, resulting in a smaller transformation ratio. The amount of electricity measured by the metering simulation module is less than the actual electricity consumption, resulting in a negative metering error, simulating the electricity theft effect.
[0008] Optionally, when the control module starts the half-wave rectification electricity theft simulation, the half-wave rectification electricity theft user load unit begins to filter the negative half-cycle current of the AC power, and only allows the positive half-cycle of the AC power to pass through the half-wave rectification circuit. The effective value of the current is smaller than the effective value of the sinusoidal AC power. The power measured by the metering simulation module is less than the actual power consumption, resulting in a negative metering error, simulating the effect of electricity theft.
[0009] Optionally, the control module includes a device control unit, a data analysis unit and a virtual simulation unit. The device control unit controls the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module according to the power theft simulation scheme to complete the power theft simulation. The data analysis unit performs power theft analysis based on the data collected during the power theft simulation process. The virtual simulation unit implements power theft simulation in a virtual mode based on the data during the power theft simulation process and displays it on the display module.
[0010] Optionally, the data analysis unit performs electricity theft analysis based on the data collected during the electricity theft simulation process, specifically by: collecting the user's load data during the electricity theft simulation process, the user's load data includes three categories: normal load, DC injection electricity theft load, and half-wave rectifier electricity theft load, clustering the user's load data to obtain an evaluation score of each user's load data for the cluster center, setting different evaluation score thresholds, calculating the accuracy of different evaluation score thresholds, drawing a ROC curve, finding the optimal evaluation score threshold on the ROC curve, and performing electricity theft simulation behavior analysis on the user's load data based on the optimal evaluation score threshold.
[0011] Optionally, the display module includes a display unit and an interaction unit, the display unit is used to display data, simulation conditions and a control interface, and the interaction unit is used to input control information to complete the control of the electricity theft simulation.
[0012] It can be seen from the above technical solution that, compared with the prior art, the present invention discloses a power theft simulation display system based on user load simulation, which has the following beneficial effects: trainees can adjust user load characteristics through the operation interface, simulate the power theft methods of DC injection and half-wave rectification, and the control and display module displays the metering data of the electric energy meter and the error caused by power theft in real time. Trainees can intuitively understand the principles and hazards of power theft by DC injection and half-wave rectification through these data; the present invention can provide a reference for anti-power theft by collecting and analyzing the data in the simulation process and extracting the power theft feature data. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.
[0014] Figure 1 A schematic diagram of a power theft simulation display system of the present invention;
[0015] Figure 2 It is a circuit diagram of a normal user load unit and a half-wave rectifier power-stealing user load unit of the present invention;
[0016] Figure 3 This is a circuit diagram of a DC injection and electricity stealing user load unit of the present invention. DETAILED DESCRIPTION
[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0018] The embodiment of the present invention discloses a power theft simulation display system based on user load simulation, such as Figure 1 As shown, it includes: a control module, a display module, a line simulation module, a current mutual inductance module, a metering simulation module and a load simulation module, wherein the control module is respectively connected with the display module, the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module; the control module is used to control the operation of the electricity theft simulation display system; the display module is used to display the operation interface; the line simulation module is respectively connected with the metering simulation module and the load simulation module; the line simulation module simulates a high-supply and low-meter line loop; the metering simulation module measures the output of the current mutual inductance module; and the load simulation module simulates the user load.
[0019] Furthermore, the load simulation module includes a normal user load unit, a DC injected electricity stealing user load unit and a half-wave rectifier electricity stealing user load unit. The normal user load unit simulates the load of a normal user and simulates the user load under the condition of DC current injection. The half-wave rectifier electricity stealing user load unit simulates the user load that rectifies AC power using a half-wave rectifier circuit.
[0020] Among them, the normal user load unit and the half-wave rectifier stealing power user load unit circuit are as follows Figure 2As shown, the load unit circuit of the DC power stealing user is as follows Figure 3 As shown,
[0021] Furthermore, when the control module starts the DC injection and electricity theft simulation, DC current is injected into the main circuit on the user load side of the DC injection and electricity theft user load unit. The injected DC current saturates the current mutual inductance module and reduces the magnetic permeability, resulting in a smaller transformation ratio. The amount of electricity measured by the metering simulation module is less than the actual electricity consumption, resulting in a negative metering error, simulating the electricity theft effect.
[0022] Furthermore, when the control module starts the half-wave rectification electricity theft simulation, the half-wave rectification electricity theft user load unit begins to filter the negative half-cycle current of the AC power, and only allows the positive half-cycle of the AC power to pass through the half-wave rectification circuit. The effective value of the current is smaller than the effective value of the sinusoidal AC power. The power measured by the metering simulation module is less than the actual power consumption, resulting in a negative metering error, simulating the effect of electricity theft.
[0023] Furthermore, the control module includes a device control unit, a data analysis unit and a virtual simulation unit. The device control unit controls the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module according to the power theft simulation scheme to complete the power theft simulation. The data analysis unit performs power theft analysis based on the data collected during the power theft simulation process. The virtual simulation unit implements power theft simulation in a virtual mode based on the data during the power theft simulation process and displays it on the display module.
[0024] Furthermore, the data analysis unit performs electricity theft analysis based on the data collected during the electricity theft simulation process, specifically: collects the user's load data during the electricity theft simulation process, the user's load data includes three categories: normal load, DC injection electricity theft load, and half-wave rectifier electricity theft load, clusters the user's load data, obtains the evaluation score of each user's load data for the cluster center, sets different evaluation score thresholds, calculates the accuracy of different evaluation score thresholds, draws a ROC curve, finds the best evaluation score threshold on the ROC curve, and performs electricity theft simulation behavior analysis on the user's load data based on the best evaluation score threshold.
[0025] In the embodiment of the present invention, the user's load data set is X={x 1 ,x 2 ,…,x n}, x i , i∈[1,n] represents all load data of a user, n is the total number of users, x i ={x i1 ,x i2 ,…,x im}, m is the total number of load data collected by the user, cluster the samples in the user's load data set X, and solve the minimum value of the objective function:
[0026]
[0027] In the formula, U is the membership matrix, V is the set of cluster centers, and u ij Represents user data x i The membership degree of category j, j = 1, 2, 3, b is the weighted index, in this embodiment, b = 2, d ij Represents the cluster center v j and sample x i The Euclidean distance between
[0028] Solve the objective function to obtain the membership of each user to its category, normalize the inverse of the membership as the evaluation score of the user's load data to the cluster center, set different evaluation score thresholds, and judge whether the user has stolen electricity. Compare the judgment result with the original label to obtain the accuracy of each evaluation score threshold, draw the ROC curve, and take the evaluation score threshold corresponding to the point on the ROC curve closest to the coordinate (0,1) as the optimal evaluation score threshold to obtain the user's electricity theft analysis model. The data analysis unit can use the user's electricity theft analysis model to judge whether the user has stolen electricity based on the input user load data.
[0029] In the embodiment of the present invention, the user data is collected through the actual simulation process of the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module. Each user may include multiple loads, such as normal loads and DC injection and power stealing loads.
[0030] Furthermore, the display module includes a display unit and an interaction unit. The display unit is used to display data, simulation conditions and control interface, and the interaction unit is used to input control information to complete the control of the power theft simulation. The display module displays the metering data of the energy meter and the error caused by power theft in real time. Trainees can intuitively understand the principles and hazards of DC injection power theft and half-wave rectification power theft through these data.
[0031] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.
[0032] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A power theft simulation display system based on user load simulation, characterized in that: include: A control module, a display module, a line simulation module, a current mutual induction module, a metering simulation module and a load simulation module, wherein the control module is respectively connected with the display module, the line simulation module, the current mutual induction module, the metering simulation module and the load simulation module; the control module is used to control the operation of the electricity theft simulation display system; the display module is used to display the operation interface; the line simulation module is respectively connected with the metering simulation module and the load simulation module; the line simulation module simulates a high-supply and low-meter line loop; the metering simulation module measures the output of the current mutual induction module; and the load simulation module simulates the user load.
2. According to claim 1, a power theft simulation display system based on user load simulation is characterized in that: The load simulation module includes a normal user load unit, a DC injection and electricity stealing user load unit and a half-wave rectifier electricity stealing user load unit. The normal user load unit simulates the load of a normal user and simulates the user load under the condition of DC current injection. The half-wave rectifier electricity stealing user load unit simulates the user load that rectifies AC power using a half-wave rectifier circuit.
3. The power theft simulation display system based on user load simulation according to claim 2 is characterized in that: When the control module starts the DC injection and electricity theft simulation, DC current is injected into the main circuit on the user load side of the DC injection and electricity theft user load unit. The injected DC current saturates the current mutual inductance module and reduces the magnetic permeability, resulting in a smaller transformation ratio. The power measured by the metering simulation module is less than the actual power consumption, resulting in a negative metering error, simulating the effect of electricity theft.
4. The power theft simulation display system based on user load simulation according to claim 2 is characterized in that: When the control module starts the half-wave rectification electricity theft simulation, the half-wave rectification electricity theft user load unit begins to filter the negative half-cycle current of the AC power, and only allows the positive half-cycle of the AC power to pass through the half-wave rectification circuit. The effective value of the current is smaller than the effective value of the sinusoidal AC power. The power measured by the metering simulation module is less than the actual power consumption, resulting in a negative metering error, simulating the effect of electricity theft.
5. The power theft simulation display system based on user load simulation according to claim 1 is characterized in that: The control module includes a device control unit, a data analysis unit and a virtual simulation unit. The device control unit controls the line simulation module, the current mutual inductance module, the metering simulation module and the load simulation module according to the power theft simulation scheme to complete the power theft simulation. The data analysis unit performs power theft analysis based on the data collected during the power theft simulation process. The virtual simulation unit implements power theft simulation in a virtual mode based on the data during the power theft simulation process and displays it on the display module.
6. The power theft simulation display system based on user load simulation according to claim 5 is characterized in that: The data analysis unit performs electricity theft analysis based on the data collected during the electricity theft simulation process. Specifically, the load data of users during the electricity theft simulation process is collected. The user's load data includes three categories: normal load, DC injection theft load, and half-wave rectifier theft load. The user's load data is clustered to obtain the evaluation score of each user's load data for the cluster center, and different evaluation score thresholds are set. The accuracy of different evaluation score thresholds is calculated, and the ROC curve is drawn. The optimal evaluation score threshold is found on the ROC curve, and the electricity theft simulation behavior analysis is performed on the user's load data based on the optimal evaluation score threshold.
7. The power theft simulation display system based on user load simulation according to claim 1 is characterized in that: The display module includes a display unit and an interaction unit. The display unit is used to display data, simulation conditions and a control interface. The interaction unit is used to input control information to complete the control of the electricity theft simulation.