Intelligent missort checking instrument based on carrier communication load deviation current comparison

Abstract

The invention relates to an intelligent missort checking instrument based on carrier communication load deviation current comparison, which comprises a missort checking instrument and a mobile operation terminal, and is characterized in that a dynamic characteristic load module, a carrier communication module, a missort detection algorithm module, a data storage module and a safety protection module are arranged in the missort checking instrument; the mobile operation terminal is used for issuing a detection work order, dynamically adjusting load parameters and displaying a detection result; the dynamic characteristic load module generates a characteristic current curve by adjusting load current; the carrier communication module communicates with the electric energy meter by adopting an HPLC technology, and reads current and meter number data of the electric energy meter in real time; and the missort detection algorithm module judges whether missort occurs or not by comparing the contact ratio of the characteristic current curve of the electric energy meter and the characteristic current curve generated by the dynamic characteristic load module. The missort intelligent troubleshooting instrument can realize single-person efficient and accurate missort troubleshooting, guarantees operation safety and data reliability, and is suitable for intelligent operation and maintenance requirements in the field of electric power measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of electric energy metering and collection, and in particular to an intelligent household series troubleshooting instrument based on carrier communication load deviation current comparison. Background Art

[0002] The accuracy of the correspondence between the electricity meter file and the actual billing meter is the basis for ensuring normal customer quantity, price and fee. The error in the household-meter correspondence caused by the wrong connection of the meter line seriously affects the fairness of metering. At present, due to the lack of historical data, it is difficult to judge whether there is cross-household connection based on the online algorithm in the new substation. The mainstream anti-cross-household inspection in the new substation is carried out simultaneously by two people. The usual practice is that one person performs the switch operation in front of the meter, and the other person goes to the house to check whether the power is off, which is inefficient. For example, the Chinese patent application number CN202410693250.1 discloses a low-voltage meter back-line cross-household detection device, and the Chinese patent application number CN202411003218.2 discloses a non-powered cross-household detection device and detection method. These detection devices and methods require the operation of two devices, the master and the slave, which are relatively cumbersome. Summary of the Invention

[0003] The purpose of the present invention is to provide an intelligent household-to-household troubleshooting instrument based on carrier communication load deviation current comparison. The intelligent household-to-household troubleshooting instrument can realize efficient and accurate household-to-household troubleshooting by a single person, while ensuring operational safety and data reliability, and is suitable for the intelligent operation and maintenance needs in the field of power metering.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an intelligent household-to-household inspection instrument based on carrier communication load deviation current comparison, including a household-to-household inspection instrument and a mobile operation terminal, the household-to-household inspection instrument has a built-in dynamic characteristic load module, a carrier communication module, a household-to-household detection algorithm module, a data storage module and a safety protection module, the mobile operation terminal is connected to the household-to-household inspection instrument via Bluetooth, and is used to issue detection work orders, dynamically adjust load parameters and display detection results; the dynamic characteristic load module adjusts the load current through the control unit to generate a characteristic current curve; the carrier communication module adopts HPLC (high-speed power line carrier) technology to communicate with the electric energy meter through the power line to read the current and meter number data of the electric energy meter in real time; the household-to-household detection algorithm module uses the dynamic time warping (DTW) algorithm to compare the characteristic current curve of the electric energy meter with the characteristic current curve generated by the dynamic characteristic load module to determine whether household-to-household crosstalk occurs; the data storage module is used to store the detection results; the safety protection module includes an overload protection circuit, a temperature sensor and a cooling fan to ensure the safe operation of the equipment.

[0005] Furthermore, the dynamic characteristic load module realizes the dynamic characteristic load function through the built-in dynamic characteristic load circuit and control unit; the dynamic characteristic load module is remotely controlled through a mobile phone app, dynamically adjusts the load size in real time, and dynamically sets different characteristic current curves according to needs to meet the testing requirements of various application scenarios.

[0006] Furthermore, the dynamic characteristic load module is installed with an intelligent adaptation algorithm to automatically adjust load parameters according to external input.

[0007] Furthermore, the carrier communication module has built-in HPLC carrier and Bluetooth communication functions, can receive control information issued by the mobile operation terminal, and provide real-time feedback on data and detection results during the investigation process, conduct carrier communication with the electric energy meter through the power line, and automatically read the meter number and current data of the electric energy meter; the carrier communication module polls the carrier frequency band of the substation when it is first started, records the successful communication frequency band, and directly uses the frequency band to communicate with the electric energy meter in subsequent detections.

[0008] Furthermore, the HPLC carrier adopts OFDM (Orthogonal Frequency Division Multiplexing) technology to modulate the digital signal into a high-frequency carrier signal suitable for power line transmission, and the receiving end then demodulates the carrier signal into the original digital signal.

[0009] Furthermore, the cross-household detection algorithm module reads the current value of the electricity meter before the characteristic load is connected based on the communication address of the electricity meter. After starting the dynamic characteristic load module, it continuously reads the current value of the electricity meter, generates a characteristic current curve, compares it with the characteristic current curve of the electricity meter itself, and automatically judges the cross-household investigation results. The cross-household analysis results are displayed on the LCD screen of the cross-household intelligent troubleshooting instrument, and the characteristic current curve of the tested electricity meter and the characteristic current curve of the electricity meter itself, the test duration, and the test results are displayed on the mobile phone App. The overlap of the two curves is compared through the dynamic time warping (DTW) algorithm to determine whether cross-household has occurred.

[0010] Furthermore, the logic of the inter-account detection algorithm module to determine whether inter-account intercommunication occurs is:

[0011] If the DTW value is greater than the set value, it is determined that a household intercommunication has occurred. The mobile app reads the event reporting information in the substation to determine the household intercommunication target, and then displays the household intercommunication result on the app, and at the same time sends the event reporting information back to the substation for retention.

[0012] Furthermore, the safety protection module includes four high-power cooling fans distributed on the side of the equipment to achieve heat dissipation function; the safety protection module has a built-in overload protection circuit, which automatically cuts off the power supply when the load current exceeds the set value; the safety protection module has a built-in temperature sensor to monitor the internal temperature in real time, and when the temperature exceeds the safety threshold, it automatically stops working and alarms.

[0013] Furthermore, the household inspection instrument transmits the detection results back to the substation system via the HPLC carrier, automatically ends the work order and retains the event reporting information.

[0014] Furthermore, the top of the household-to-household troubleshooting instrument is provided with an LCD screen and a handle, the front of the household-to-household intelligent troubleshooting instrument is provided with a switch button and a 220V power cord interface, and is equipped with three power access lines for use in different scenarios.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Improved operational convenience: Single-user, single-machine detection is now possible, eliminating the need for traditional two-person collaboration or master-slave device coordination, significantly reducing labor costs. Dynamic characteristic load parameters can be remotely controlled via a mobile app, supporting real-time adjustment of load current and the setting of multiple characteristic current curves, streamlining the operational process.

[0017] 2. Optimized detection efficiency and accuracy: Utilizing HPLC carrier communication technology, data is transmitted directly over power lines, eliminating the need for additional wiring. Meter information (meter number, current) is automatically read, shortening detection time. Upon initial startup, the system automatically polls and records the carrier frequency band for the substation area, allowing for direct reuse in subsequent detections, improving communication efficiency. Based on the Dynamic Time Warping (DTW) algorithm, the system intelligently compares the characteristic current curves of the meter and load module to accurately determine inter-connection and avoid human error.

[0018] 3. Enhanced safety and reliability: Built-in overload protection circuit and temperature sensor automatically cut off overload power and alarm to prevent equipment damage. Four sets of high-power cooling fans ensure long-term stable operation of the equipment and avoid overheating failure.

[0019] 4. Improved adaptability and scalability. Supports multiple people working in parallel, ensuring independent interference between different troubleshooting tasks, making it suitable for rapid testing in large-scale substations. The data storage module can save 1,000 test results offline and can still operate in an offline environment, meeting the needs of complex scenarios.

[0020] 5. Automation and Intelligent Integration: Test results are transmitted back to the station system in real time via HPLC, automatically generating event reports and closing work orders, reducing manual data entry errors. The LCD screen and mobile app simultaneously display test curves, results, and historical data, facilitating on-site decision-making and subsequent tracing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a block diagram of the implementation principle of the intelligent household troubleshooting instrument provided by an embodiment of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a household-to-household troubleshooting instrument according to an embodiment of the present invention;

[0023] Figure 3 Schematic diagram of the interface of the mobile operation terminal in an embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0026] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0027] like Figure 1 As shown, this embodiment provides an intelligent household-to-household troubleshooting instrument based on carrier communication load deviation current comparison, including a household-to-household troubleshooting instrument and a mobile operation terminal.

[0028] The mobile operation terminal is connected to the household inspection instrument via Bluetooth, and is used to issue inspection work orders, dynamically adjust load parameters and display inspection results.

[0029] The cross-connection troubleshooting instrument has a built-in dynamic characteristic load module, a carrier communication module, a cross-connection detection algorithm module, a data storage module, and a safety protection module. The dynamic characteristic load module adjusts the load current through the control unit to generate a characteristic current curve; the carrier communication module uses HPLC (high-speed power line carrier) technology to communicate with the electric energy meter through the power line and read the electric energy meter's current and meter number data in real time; the cross-connection detection algorithm module uses the dynamic time warping (DTW) algorithm to compare the degree of overlap between the characteristic current curve of the electric energy meter and the characteristic current curve generated by the dynamic characteristic load module to determine whether cross-connection has occurred; the data storage module is used to store the detection results; the safety protection module includes an overload protection circuit, a temperature sensor, and a cooling fan to ensure the safe operation of the equipment.

[0030] 1. Dynamic feature load module

[0031] The dynamic characteristic load module implements dynamic characteristic load functionality through a built-in dynamic characteristic load circuit and control unit. Remotely controlled via a mobile app, the module dynamically adjusts the load in real time and dynamically sets different characteristic current curves based on demand, meeting the testing requirements of various application scenarios. The module also incorporates an intelligent adaptation algorithm to automatically adjust load parameters based on external input.

[0032] 2. Carrier communication module

[0033] The carrier communication module has built-in HPLC carrier and Bluetooth communication functions, can receive control information issued by the mobile operation terminal, and provide real-time feedback on data and detection results during the investigation process, conduct carrier communication with the electric energy meter through the power line, and automatically read the meter number and current data of the electric energy meter; the carrier communication module polls the carrier frequency band of the substation when it is first started, records the successful communication frequency band, and directly uses the frequency band to communicate with the electric energy meter in subsequent detections.

[0034] The HPLC carrier uses OFDM (Orthogonal Frequency Division Multiplexing) technology to modulate the digital signal into a high-frequency carrier signal suitable for power line transmission, and the receiving end then demodulates the carrier signal into the original digital signal.

[0035] 3. Inter-user detection algorithm module

[0036] The cross-household detection algorithm module reads the current value of the electricity meter before the characteristic load is connected based on the communication address of the electricity meter. After starting the dynamic characteristic load module, it continuously reads the current value of the electricity meter, generates a characteristic current curve, compares it with the characteristic current curve of the electricity meter itself, and automatically judges the cross-household investigation results. The cross-household analysis results are displayed on the LCD screen of the cross-household intelligent troubleshooting instrument, and the characteristic current curve of the tested electricity meter and the characteristic current curve of the electricity meter itself, the test duration, and the test results are displayed on the mobile phone App. The overlap of the two curves is compared through the dynamic time warping (DTW) algorithm to determine whether cross-household occurs.

[0037] Dynamic Time Warping (DTW) is a method used to measure the similarity of time series, especially when the curves have similar shapes but inconsistent time axis alignment. The DTW value is calculated as:

[0038]

[0039] Where φ is a nonlinear time alignment function. The smaller the DTW value, the higher the overlap of the curves. A DTW value below a certain value indicates no crosstalk.

[0040] The logic of the inter-account detection algorithm module to determine whether inter-account intercommunication occurs is:

[0041] If the DTW value is greater than the set value, a cross-connection is detected. The mobile app reads the event report information from the distribution center to determine the target of the cross-connection. The cross-connection result is then displayed on the app and the event report information is transmitted back to the distribution center via the HPLC carrier for storage. The results of the investigation are then transmitted back to the distribution center via the HPLC carrier for storage, and the work order is closed.

[0042] 4. Data storage module

[0043] The inter-household inspection instrument has a built-in data storage module that supports the storage of 1,000 test results, ensuring that it can work normally even when the mobile phone has no network. The detection history can be called up and displayed through a mobile operation terminal (mobile phone) and historical data can be managed.

[0044] 5. Security protection module

[0045] The safety protection module includes four high-power cooling fans distributed on the side of the device to achieve heat dissipation function; the safety protection module has a built-in overload protection circuit, which automatically cuts off the power supply when the load current exceeds the set value; the safety protection module has a built-in temperature sensor to monitor the internal temperature in real time, and automatically stops working and alarms when the temperature exceeds the safety threshold.

[0046] like Figure 2 As shown, the top of the intelligent household inspection instrument is provided with an LCD screen 1 and a handle 2, a cooling fan 3 is provided on the side, a switch button and a 220V power cord interface are provided on the front, and there are three power access lines for use in different scenarios.

[0047] The embodiment of the present invention provides an intelligent household group troubleshooting instrument that calculates and reports load deviation current in real time based on carrier communication, and supports single-person and multi-person verification. The specific steps for use are as follows:

[0048] Step 1: The system host generates a work order based on the household number that needs to be checked, issues the task, and pushes the household number information (including meter station number and other information) to the mobile app.

[0049] Step 2: Based on the household information file, the staff will visit the household, connect the instrument on-site, and press the "Inter-household Diagnosis" button on the mobile app. The instrument will automatically run and analyze the results, and provide an on-site judgment on whether there is an inter-household problem. The results are automatically sent back to the system host, and the work order is closed.

[0050] The specific usage and function of this embodiment are as follows:

[0051] 1. Equipment initialization. The operator enters the house and plugs in the mains power, turns on the equipment, and confirms the equipment status through the LCD screen. Turn on the mobile operation terminal (mobile phone), connect the device via Bluetooth, and the device clicks OK to establish a connection. The interface of the mobile operation terminal is as follows: Figure 3 shown.

[0052] In particular, if there is no corresponding socket in the newly installed user's house, the mains power can be connected through the wire clamp power cord equipped with the device.

[0053] 2. Start the test. Click the corresponding test work order on the mobile terminal (mobile phone), set the characteristic current curve to start the test, and the mobile terminal (mobile phone) sends the communication address and characteristic current curve information to the device via Bluetooth communication.

[0054] 3. Inter-household investigation and judgment. The device reads the current value of the energy meter before connecting to the characteristic load through carrier communication. The device automatically connects to the characteristic current according to the characteristic current curve sent. During the test, the device continuously reads the current value of the energy meter to form the characteristic current curve of the device under test. At the same time, the device itself will also generate the characteristic current curve of the characteristic load module. The result of the inter-household investigation is automatically judged by the overlap of the two curves. The characteristic current curve of the device under test, the characteristic current curve of the characteristic load module, the inter-household investigation result and other information are displayed on the LCD screen. The investigation results are finally reported to the substation through HPLC for background storage.

[0055] 4. Read the results. After returning the cross-connection result, the device automatically stops the test and displays the characteristic current curve of the device under test, the characteristic current curve of the characteristic load module, the cross-connection judgment result and other information on the screen. After the judgment is completed, the device finally returns the event report information to the station area through HPLC for background storage.

[0056] 5. View historical data. Call the device interface to display recent test results in the historical test records of the mobile operation terminal (mobile phone).

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any other manner. Any person skilled in the art may utilize the above-disclosed technical content to modify or modify the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention remain within the scope of protection of the present invention.

Claims

1. An intelligent household inspection instrument based on carrier communication load deviation current comparison, characterized in that: The system includes a household-to-household troubleshooting instrument and a mobile operation terminal. The household-to-household troubleshooting instrument has a built-in dynamic characteristic load module, a carrier communication module, a household-to-household detection algorithm module, a data storage module, and a safety protection module. The mobile operation terminal is connected to the household-to-household troubleshooting instrument via Bluetooth and is used to issue detection work orders, dynamically adjust load parameters, and display detection results. The dynamic characteristic load module adjusts the load current through a control unit to generate a characteristic current curve. The carrier communication module adopts HPLC (high-speed power line carrier) technology to communicate with the electricity meter through the power line and read the current and meter number data of the electricity meter in real time; the cross-connection detection algorithm module uses the dynamic time warping (DTW) algorithm to compare the overlap between the characteristic current curve of the electricity meter and the characteristic current curve generated by the dynamic characteristic load module to determine whether cross-connection occurs; the data storage module is used to store the detection results; the safety protection module includes an overload protection circuit, a temperature sensor and a cooling fan to ensure the safe operation of the equipment.

2. The intelligent household inspection instrument based on carrier communication load deviation current comparison according to claim 1 is characterized in that: The dynamic characteristic load module realizes the dynamic characteristic load function through the built-in dynamic characteristic load circuit and control unit; the dynamic characteristic load module is remotely controlled through a mobile phone app, dynamically adjusts the load size in real time, and dynamically sets different characteristic current curves according to needs to meet the testing requirements of various application scenarios.

3. The intelligent household inspection instrument based on carrier communication load deviation current comparison according to claim 2 is characterized in that: The dynamic characteristic load module is equipped with an intelligent adaptation algorithm to automatically adjust load parameters according to external input.

4. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 1 is characterized in that: The carrier communication module has built-in HPLC carrier and Bluetooth communication functions, can receive control information issued by the mobile operation terminal, and provide real-time feedback on data and detection results during the investigation process, conduct carrier communication with the electric energy meter through the power line, and automatically read the meter number and current data of the electric energy meter; the carrier communication module polls the carrier frequency band of the substation when it is first started, records the successful communication frequency band, and directly uses the frequency band to communicate with the electric energy meter in subsequent detections.

5. The intelligent household series troubleshooting instrument based on carrier communication load deviation current comparison according to claim 4 is characterized in that: The HPLC carrier uses OFDM (Orthogonal Frequency Division Multiplexing) technology to modulate the digital signal into a high-frequency carrier signal suitable for power line transmission, and the receiving end then demodulates the carrier signal into the original digital signal.

6. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 1 is characterized in that: The cross-household detection algorithm module reads the current value of the electricity meter before the characteristic load is connected based on the communication address of the electricity meter. After starting the dynamic characteristic load module, it continuously reads the current value of the electricity meter, generates a characteristic current curve, compares it with the characteristic current curve of the electricity meter itself, and automatically judges the cross-household investigation results. The cross-household analysis results are displayed on the LCD screen of the cross-household intelligent troubleshooting instrument, and the characteristic current curve of the tested electricity meter and the characteristic current curve of the electricity meter itself, the test duration, and the test results are displayed on the mobile phone App. The overlap of the two curves is compared through the dynamic time warping (DTW) algorithm to determine whether cross-household occurs.

7. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 6 is characterized in that: The logic of the inter-account detection algorithm module to determine whether inter-account intercommunication occurs is: If the DTW value is greater than the set value, it is determined that a household intercommunication has occurred. The mobile app reads the event reporting information in the substation to determine the household intercommunication target, and then displays the household intercommunication result on the app, and at the same time sends the event reporting information back to the substation for retention.

8. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 1 is characterized in that: The safety protection module includes four high-power cooling fans distributed on the side of the device to achieve heat dissipation function; the safety protection module has a built-in overload protection circuit, which automatically cuts off the power supply when the load current exceeds the set value; the safety protection module has a built-in temperature sensor to monitor the internal temperature in real time, and automatically stops working and alarms when the temperature exceeds the safety threshold.

9. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 1 is characterized in that: The household inspection instrument transmits the detection results back to the substation system via the HPLC carrier, automatically ends the work order and retains the event reporting information.

10. The intelligent household group troubleshooting instrument based on carrier communication load deviation current comparison according to claim 1, characterized in that: The top of the household-to-household troubleshooting instrument is provided with an LCD screen and a handle. The front of the household-to-household intelligent troubleshooting instrument is provided with a switch button and a 220V power cord interface, and is equipped with three power access lines for use in different scenarios.

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