An adaptive electric energy meter replacement device without power interruption and a use method thereof

Abstract

This invention relates to an adaptive energy meter uninterrupted replacement device and its usage method, applicable to uninterrupted replacement of single-phase / three-phase energy meters of different specifications. It includes a housing, comprising a core board base and a cover connected to the core board base via a hydraulic rod assembly. A portable operating terminal is mounted on the inner side of the cover. The core board base houses an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module is located on one side of the upper surface of the core board base. The main control unit is electrically connected to the adaptive bypass module, the intelligent metering matching module, the safety protection module, and the multi-interface quick-connect module. The portable operating terminal is wirelessly connected to the main control unit. The adaptive bypass module includes a current adaptive adjustment unit, a voltage adaptation unit, and a bypass on / off control unit. This invention has the advantages of simple and reasonable structure, achieving single-phase / three-phase adaptive operation, automatic wiring matching, and accurate metering calibration.

Description

Technical Field

[0001] This invention belongs to the field of power system maintenance technology, specifically relating to an adaptive energy meter uninterrupted replacement device and its usage method. Background Technology

[0002] In the marketing, metering, operation, and maintenance of power systems, electricity meters need to be periodically rotated and replaced according to the national mandatory verification requirements for measuring instruments. To improve power supply reliability and user experience, uninterrupted meter replacement technology has become an important direction for industry development. Currently, uninterrupted meter replacement devices and methods still have many shortcomings, as follows: 1. Poor specification compatibility: For example, the portable uninterrupted meter replacement device of patent CN116679101A is only suitable for directly connected single-phase electricity meters and cannot be adapted to 380V three-phase electricity meters. Moreover, the adaptation range for the rated current of electricity meters is narrow, and it can only carry a working current of 10A. Users still need to turn off high-power appliances when replacing the meter; the device of patent CN218586837U is only designed for three-phase electricity meters and cannot be compatible with single-phase meters. 1. Electricity meters require different devices for single-phase / three-phase meter replacement, increasing maintenance costs; 2. Wiring matching is cumbersome and prone to errors: Existing devices such as the multi-structure adaptive device CN121476675A, although compatible with various switch types, require manual selection of the power module by staff, and phase matching requires scanning codes or manual verification, making the operation cumbersome and lacking real-time wiring detection. Incorrect wiring phase can easily cause short circuits, posing a safety hazard; The device of patent CN215894714U requires wiring through a combined junction box, which has specific requirements for the meter box structure and cannot be adapted to ordinary meter boxes without a combined junction box; 3. Low metering accuracy and lack of calibration function: The metering modules of existing devices are mostly general-purpose metering chips, not designed for different specifications of electricity meters. The accuracy of the measurement is not properly adapted. For example, the CN116679101A device only performs bypass power measurement without a calibration process, resulting in discrepancies between the bypass measurement data and the meter's own measurement data, leading to errors during power refunds and replacements. The CN215894714U device achieves data connection by simultaneously measuring with both old and new meters, but it does not consider the differences in measurement accuracy between different meters, still resulting in data loss. 4. Insufficient ease of operation and low level of intelligence: Most existing devices are wired, requiring operators to operate them close to the meter box. For example, the CN121476675A device requires manually loosening the locking screw to switch circuits, which is time-consuming. Some devices lack wireless interaction capabilities, and operating parameters and fault information cannot be displayed in real time, making it difficult for operators to access them. The existing devices suffer from several drawbacks: 1. Inability to quickly assess device operating status; 2. Low efficiency in troubleshooting; 3. Inadequate safety protection system: Existing devices have limited protection functions. For example, the CN218586837U device only uses an AC contactor for on / off control, lacking temperature monitoring and leakage protection. Prolonged operation of the bypass circuit can lead to insulation aging due to excessive temperature, posing risks of electric shock and fire. 4. Some devices have fixed overcurrent / overvoltage protection thresholds that cannot be adaptively adjusted according to the meter specifications, resulting in poor protection effectiveness. In summary, existing uninterrupted meter replacement devices suffer from limitations such as limited specification compatibility, cumbersome wiring, low metering accuracy, poor intelligence, and inadequate safety protection, failing to meet the needs of power maintenance for rapid, safe, and accurate uninterrupted replacement of different meter specifications.Therefore, it is essential to provide an adaptive energy meter replacement device and its usage method that features a reasonable structure, single-phase / three-phase self-adaptation, automatic wiring matching, accurate metering calibration, intelligent remote operation, and comprehensive safety protection. Summary of the Invention

[0003] (a) Technical issues In view of the above-mentioned existing technology, this application mainly addresses the following technical problems: 1. Existing uninterrupted replacement devices for electricity meters have limitations such as limited compatibility with single-phase / three-phase electricity meters with different rated currents; cumbersome wiring matching requires manual module selection and lacks real-time wiring detection, making phase matching errors likely; and low metering accuracy, lacking calibration functions for different electricity meters, resulting in metering errors. 2. Existing uninterrupted power meter replacement devices suffer from low levels of intelligence, are mostly wired, and cannot monitor operating parameters in real time; their safety protection systems are incomplete, with limited protection functions and fixed thresholds.

[0004] (II) Technical Solution The purpose of this invention is to overcome the shortcomings of the prior art and provide an adaptive energy meter replacement device and its usage method that has a reasonable structure, realizes single-phase / three-phase self-adaptation, automatic wiring matching, accurate metering calibration, intelligent remote operation, and comprehensive safety protection.

[0005] The objective of this invention is achieved as follows: Firstly, an adaptive energy meter uninterrupted replacement device is provided, suitable for uninterrupted replacement of single-phase / three-phase energy meters of different specifications. It includes a housing, comprising a core board base and a cover movably connected to the core board base via a hydraulic rod assembly. A portable operating terminal is detachably mounted on the inner side of the cover. The core board base houses an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module is provided on one side of the upper surface of the core board base. The main control unit is connected to the adaptive bypass module... The portable operating terminal is electrically connected to the main control unit, comprising a module, an intelligent metering matching module, a safety protection module, and a multi-interface quick-connect module. The adaptive bypass module includes a current adaptive adjustment unit, a voltage adaptation unit, and a bypass on / off control unit. The intelligent metering matching module includes a metering chip, a phase recognition unit, and a power calibration unit. The multi-interface quick-connect module includes an insulating protective shell, wire-clamping terminals, a fault indicator light, and a detachable quick-connect connector. The safety protection module includes an overcurrent protection unit, an overvoltage protection unit, a leakage protection unit, and a temperature monitoring unit.

[0006] In this invention, the current adaptive adjustment unit automatically adjusts the bypass carrying current according to the rated current of the energy meter; the voltage adaptation unit adapts to 220V single-phase / 380V three-phase voltage input; the bypass on / off control unit realizes the switching of the bypass on / off; the phase recognition unit automatically identifies the wiring phase of the energy meter; the metering chip measures the bypass power consumption data; the power calibration unit calibrates the bypass metering data according to the metering accuracy of the energy meter; the temperature monitoring unit detects the operating temperature of the bypass module in real time, and when the temperature exceeds a preset threshold, the current / voltage exceeds the standard, or leakage occurs, the safety protection module automatically cuts off the bypass and issues an alarm signal.

[0007] In this invention, various specifications of quick-connect terminals for meter boxes are adapted to the inlet / outlet terminal specifications of different meter boxes. The wiring detection unit detects the wiring continuity status of the quick-connect terminals for meter boxes. The quick-connect terminals for meter boxes include various types such as snap-on clamps, threaded connectors, and plug-in connectors. The quick-connect terminals for meter boxes are detachably connected to the insulating protective housing. The wiring detection unit includes a continuity sensor and a fault indicator light. The continuity sensor detects the wiring continuity status of the connectors, and the fault indicator light displays the wiring faults of each connector.

[0008] A method for using an adaptive energy meter uninterrupted replacement device, which enables uninterrupted replacement of energy meters of various specifications based on the aforementioned adaptive energy meter uninterrupted replacement device, the method comprising the following steps: S1: Device initialization: Select and install the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module according to the specifications of the meter box inlet / outlet terminals, turn on the device power, the main control unit completes the self-test of each module, and the portable operation terminal establishes a wireless communication connection with the main control unit. S2: Wiring and Testing: Connect the quick-connect connectors of the meter box terminals to the meter box inlet and outlet terminals respectively. The wiring test unit tests the continuity of each connector. If there is a wiring fault, the fault indicator light will light up and the portable operation terminal will prompt the operator to rewire until the test is passed. S3: Adaptive Matching: The voltage adaptation unit detects the incoming voltage type and completes 220V / 380V voltage adaptation; the current adaptive adjustment unit automatically adjusts the bypass carrying current according to the rated current of the energy meter; the phase recognition unit identifies the wiring phase of the energy meter and sends the phase information to the main control unit; the main control unit controls the bypass module to achieve precise phase matching with the energy meter. In this invention, if the energy meter to be replaced is a registered specification, the main control unit can retrieve the pre-stored metering parameters and wiring phase information from the storage unit to achieve rapid adaptive matching, with a matching time of ≤3s; if it is an unregistered specification, the phase identification unit and voltage / current adaptation unit detect and complete the matching in real time, with a matching time of ≤8s.

[0009] S4: Bypass Activation: Staff issue a bypass activation command through a portable operating terminal. The main control unit controls the bypass on / off control unit to close, and the device and the energy meter form a parallel bypass. The user's electricity consumption is switched to the bypass channel. The metering chip of the smart metering matching module starts to measure the bypass electricity consumption data. The power calibration unit calibrates the metering data in real time according to the accuracy of the energy meter. In this invention, the safety protection module monitors the device's operating status throughout the process. When overcurrent, overvoltage, leakage, or excessive temperature is detected, the bypass is automatically cut off and an audible and visual alarm is issued on the portable operating terminal. After the fault is cleared, the operator can reset the safety protection module and reconnect the bypass through the portable operating terminal.

[0010] S5: Electricity meter replacement: The staff removes the electricity meter to be replaced, installs the new electricity meter and completes the wiring. After confirming that the wiring of the new electricity meter is correct, the staff issues a bypass disconnection command through the portable operating terminal. S6: Metering data synchronization: The main control unit sends the calibrated bypass metering data to the portable operating terminal. The staff uses this data as the initial power of the new energy meter to complete the data synchronization and achieve error-free power connection. S7: Device Removal: After the bypass is disconnected, disconnect the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module in sequence, turn off the device power supply, and complete the replacement of the energy meter without power interruption.

[0011] (III) Beneficial Effects 1. Full-specification adaptive compatibility, reducing operation and maintenance costs: The device achieves automatic adaptation of 220V single-phase / 380V three-phase voltage through current adaptive adjustment unit and voltage adaptation unit, as well as current carrying capacity adjustment of different rated current energy meters of 5A / 10A / 20A / 40A. One device can replace multiple existing single-phase and three-phase devices, and is compatible with more than 95% of residential energy meters, significantly reducing the equipment procurement and management costs of power operation and maintenance; moreover, the matching process does not require manual operation, the matching time for registered energy meters is ≤3s, and the matching time for unregistered energy meters is ≤8s, improving the preparation efficiency before meter replacement; 2. Fast and accurate wiring, greatly improving ease of operation: The multi-interface quick-connect module is equipped with three specifications of detachable quick-connect connectors to adapt to different meter box terminals. The connectors are snap-fit ​​type, which reduces wiring time by 60% compared to existing threaded wiring. In addition, the wiring detection unit detects the continuity status in real time, and the phase recognition unit achieves 100% phase accuracy matching, completely avoiding short circuit problems caused by wiring errors or reversed phases, reducing the difficulty of operation for staff, and even non-professionals can complete the wiring operation. 3. Precise and error-free metering, achieving seamless power consumption: The intelligent metering matching module adopts a 0.2-level high-precision metering chip and calibrates data in real time according to the metering accuracy of different energy meters through the power calibration unit. The deviation between the bypass metering data and the energy meter's own metering data is ≤0.1%, eliminating the need for subsequent manual power consumption refunds and completely solving the problems of low metering accuracy and data loss in existing devices, thus improving the accuracy of metering data. 4. Intelligent wireless operation significantly improves work efficiency: The main control unit and the portable operating terminal use Bluetooth / 4G / 5G wireless communication, allowing staff to remotely operate the device within a 10m range without close contact with the meter box, reducing the operational risks of meter replacement at heights and in confined spaces; the portable operating terminal displays the device's operating parameters and fault information in real time, improving fault diagnosis efficiency by 80% compared to existing devices, and reducing the overall meter replacement operation time by 50% compared to existing technologies, with a single energy meter replacement time of ≤5min; 5. Comprehensive safety protection significantly improves operational safety: The device is equipped with four layers of safety protection: overcurrent, overvoltage, leakage current, and temperature. The protection thresholds can be adaptively adjusted according to the specifications of the electricity meter, solving the problems of single protection function and fixed thresholds in existing devices. The insulated protective shell has an IP65 protection rating, a leakage current of ≤30mA, and automatic power-off when the temperature exceeds 80℃. It eliminates safety hazards such as electric shock and fire from both structural and circuit aspects, ensuring the safety of personnel and electrical lines. 6. Portable design, adaptable to various operating scenarios: The device has a portable integrated structure and weighs ≤5kg, making it easy to carry on site. It can be used in various operating scenarios such as residential building meter boxes, outdoor single meter boxes, and high-altitude meter boxes, without requiring any modification to the meter box. This completely solves the problem of existing devices having specific requirements for the meter box structure, making it more widely applicable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the device of the present invention.

[0013] Figure 2 For the present invention Figure 1 Partial structural diagram Figure 1 .

[0014] Figure 3 For the present invention Figure 1 Partial structural diagram Figure 2 .

[0015] Figure 4 This is a schematic diagram of the wire connection terminal of the present invention.

[0016] Figure 5 This is a schematic diagram of the detachable quick-connector of the present invention.

[0017] Figure 6This is a top view showing the connection state of the detachable quick-connect connector and the wire-clamping terminal of the present invention.

[0018] Figure 7 This is a top view showing the connection state of the detachable quick-connect connector and the wire-clamping terminal of the present invention.

[0019] Figure 8 This is a schematic diagram of the connection state of the first embodiment of the detachable quick connector of the present invention.

[0020] Figure 9 This is a schematic diagram of the snap-on wire clamp of the present invention.

[0021] Figure 10 This is a schematic diagram of the connection state of the second embodiment of the detachable quick connector of the present invention.

[0022] Figure 11 This is a schematic diagram of the threaded crimp quick connector of the present invention.

[0023] Figure 12 This is a schematic diagram of the connection state of the third embodiment of the detachable quick connector of the present invention.

[0024] Figure 13 This is a block diagram showing the internal components of the core plate base of the present invention.

[0025] Figure 14 This is a block diagram of the components in the adaptive bypass module of the present invention.

[0026] Figure 15 This is a block diagram of the components in the intelligent metering matching module of the present invention.

[0027] Figure 16 This is a block diagram of the multi-interface quick-connect module of the present invention.

[0028] Figure 17 This is a flowchart of the method of the present invention.

[0029] In the diagram: 1. Base; 11. Base frame; 12. Pull-out sliding handle; 13. Limit bolt; 14. Traveling wheel; 15. Multi-spacing through hole; 16. T-shaped positioning rod; 2. Scissor-type lifting assembly; 201. Riser guide; 202. Guide slot; 203. Cross scissor telescopic bracket; 204. Insertion plate; 205. Rectangular box; 3. Box; 4. Core board base; 5. Slide rail type drawer storage box; 6. Portable operating terminal; 7. Multi-interface quick-connect module; 71. Insulating protective shell; 72. Wire connection terminal; 21. Mounting ring; 22. Conductive post; 23. Conductive disc; 24. Positioning seat; 25. Guide post; 26. Internal thread; 27. Slot; 28. Conductive rod; 29. ​​Conductive ring; 201. Conductive... Block 73, fault indicator light 74, detachable quick connector 41, conductive plug 42, cross-shaped conductive head 43, limit ring 44, threaded seat 45, elastic clamp 75, connecting wire 76, snap-on wire clamp 61, insulating post 62, conductor 63, spring-loaded quick-release wire clamp 64, clamping body 65, outward-folding guide part 66, baffle 67, cross elastic buckle 68, spring telescopic pull rod 77, threaded crimp quick connector 701, insulating housing 702, locking nut 703, sliding post 704, crimping post 705, insulating screw handle 78, insert type connector 81, insulating protective sleeve 82, pin type mating insert body 8, hydraulic rod assembly. Detailed Implementation

[0030] The present invention will be further described below with reference to the embodiments and / or accompanying drawings. Example 1

[0031] like Figure 1 , 4 As shown in Figures -9 and 13-16, an adaptive energy meter uninterrupted replacement device is applicable to the uninterrupted replacement of single-phase / three-phase energy meters of different specifications. It includes a housing 3, which consists of a core board base 4 and a cover connected to the core board base 4 via a hydraulic rod assembly 8. A portable operating terminal 6 is detachably installed on the inner side of the cover. The core board base 4 houses an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module 7 is located on one side of the upper surface of the core board base 4. The main control unit is electrically connected to the adaptive bypass module, the intelligent metering matching module, the safety protection module, and the multi-interface quick-connect module 7. The portable operating terminal 6 is wirelessly connected to the main control unit. The adaptive bypass module includes a current adaptive adjustment unit, a voltage adaptation unit, and a bypass on / off control unit; the intelligent metering matching module includes a metering chip, a phase recognition unit, and a power calibration unit; the multi-interface quick-connect module includes an insulating protective housing, wire-clamping connection terminals, a fault indicator light, and a detachable quick-connect connector; the safety protection module includes an overcurrent protection unit, an overvoltage protection unit, a leakage current protection unit, and a temperature monitoring unit, constructing a comprehensive safety protection system.

[0032] In this embodiment, the overcurrent / overvoltage protection unit has the following features: The protection threshold can be adaptively adjusted by the main control unit according to the electricity meter specifications. When the bypass current / voltage exceeds the threshold, the bypass is automatically cut off. The protection threshold adjustment range is 5-50A / 200-400V. The leakage current protection unit uses a residual current device (RCD) with a leakage current ≤30mA and an action time ≤0.1s. It immediately cuts off the bypass when leakage occurs to prevent electric shock to personnel. The temperature monitoring unit uses a thermistor sensor to detect the operating temperature of the adaptive bypass module in real time. The temperature monitoring range is -20℃ to 120℃. When the temperature exceeds 80℃, it automatically cuts off the bypass and issues an alarm signal to prevent insulation aging from causing faults.

[0033] The current adaptive adjustment unit includes an adjustable shunt resistor, a current sensor, and an adjustment drive circuit. The current sensor detects the bypass current in real time and feeds it back to the main control unit. The main control unit adjusts the resistance value of the adjustable shunt resistor through the adjustment drive circuit according to the rated current of the energy meter (5A / 10A / 20A / 40A), realizing automatic adjustment of the bypass current without manual switching, and adapting to energy meters with different rated currents. The voltage adaptation unit includes a voltage detection module and a voltage conversion circuit. The voltage detection module detects whether the incoming voltage is 220V single-phase or 380V three-phase and feeds back the voltage type to the main control unit. The main control unit controls the voltage conversion circuit to automatically complete the voltage adaptation, eliminating the need for manual gear switching and avoiding human error.

[0034] In this embodiment, the bypass on / off control unit is implemented using an electromagnetic contactor. The main control unit issues commands to control the on / off state, and the contactor response time is ≤0.5s, enabling rapid switching of the bypass.

[0035] The phase identification unit includes a phase detection chip and a terminal identification probe. The terminal identification probe has a magnetic structure that can be attached to the terminals of the energy meter. The phase detection chip quickly identifies the wiring relationship of the A / B / C / N phases with 100% accuracy and sends the phase information to the main control unit to achieve accurate phase matching between the bypass and the energy meter, avoiding phase reversal.

[0036] In this embodiment, the metering chip is a high-precision energy metering chip (accuracy level 0.2) that collects data such as voltage, current, and power of the bypass in real time to measure the bypass power consumption. The power calibration unit has built-in metering accuracy parameters for different specifications of energy meters. Based on the energy meter model identified by the phase recognition unit, it retrieves the corresponding accuracy parameters to calibrate the data collected by the metering chip in real time, so that the deviation between the bypass metering data and the energy meter's own metering data is ≤0.1%, achieving accurate power consumption connection.

[0037] The main control unit includes a microcontroller, a storage unit, and a wireless communication unit. The storage unit is an erasable flash memory that contains metering parameters, wiring phase information, and meter replacement records for different specifications of single-phase / three-phase energy meters. It supports data addition and modification, making it easy for the device to adapt to new energy meters. The wireless communication unit uses Bluetooth / 4G / 5G to achieve wireless communication with the portable operation terminal 6. The portable operation terminal 6 includes a display screen, operation buttons, and an audible and visual alarm, used to display device operating parameters and issue operation commands.

[0038] In this embodiment, the microcontroller is a 32-bit high-performance MCU responsible for receiving detection data from each module, issuing operation commands, and enabling collaborative work among the modules. The wireless communication unit uses Bluetooth 5.0 + 4G / 5G dual-mode communication. The Bluetooth communication distance is ≤10m, suitable for short-range operation on site. The 4G / 5G communication supports remote data transmission, facilitating backend operation and maintenance management, and enabling wireless data interaction with the portable operating terminal. The portable operating terminal is a handheld tablet structure that can be separated from or connected to the box. It includes a high-definition display screen, physical operation buttons, and an audible and visual alarm module. The display screen shows the device's operating parameters (voltage, current, temperature, bypass power, phase information, etc.) in real time. The operation buttons are used to issue commands such as device initialization, bypass on / off, and data synchronization. The audible and visual alarm module emits an alarm signal when the device malfunctions, allowing staff to quickly grasp the device's status.

[0039] The insulating protective housing 71 is provided with a plurality of wire-clamping connection terminals 72 and fault indicator lights 73 corresponding to each wire-clamping connection terminal 72 in sequence and at intervals. The insulating protective housing 71 is provided with a wiring detection unit. The continuity sensor built into the wiring detection unit is electrically connected to the fault indicator lights 73 and the wire-clamping connection terminals 72. The detachable quick connector 74 is detachably connected to the wire-clamping connection terminals 72.

[0040] In this embodiment, the wiring detection unit consists of a continuity sensor and a fault indicator light. Each quick-connect connector corresponds to one continuity sensor and one fault indicator light. The continuity sensor detects the wiring continuity status of the connector in real time. If the wiring is loose or the contact is poor, the corresponding fault indicator light will illuminate, and the fault location will be displayed on the portable operating terminal for easy troubleshooting by staff. The insulating protective housing is made of flame-retardant ABS engineering plastic with an IP65 protection rating, providing waterproof, dustproof, and electric shock protection functions to ensure the safety of staff during operation. The meter box terminal quick-connect connector includes three types: snap-on clamp, threaded connector, and blade connector. All of them use a copper conductive structure with a contact resistance ≤5mΩ. They are detachably snap-on connected to the insulating protective housing, allowing staff to quickly select the appropriate connector according to the specifications of the meter box's inlet / outlet terminals. This design is compatible with over 95% of the terminal types in residential meter boxes, outdoor single meter boxes, and commercial meter boxes, enabling quick and reliable connection to terminals in different meter boxes.

[0041] The wire connection terminal 72 includes a mounting ring 21 installed inside the insulating protective housing 71. A conductive post 22 is provided at the lower part of the mounting ring 21. A conductive disk 23 is provided at the bottom end face of the conductive post 22. The conductive disk 23 is electrically connected to the conduction sensor by a plurality of circumferentially arranged conductive rods 28. A positioning seat 24 connected to the surface of the insulating protective housing 71 is installed on the upper part of the mounting ring 21. A guide post 25 is provided inside the positioning seat 24. The guide post 25 has an internal thread 26. A set of slots 27 are symmetrically arranged near the upper edge of the guide post 25. A conductive ring 29 is provided on the lower surface of the conductive disk 23. The conductive ring 29 is electrically connected to the detachable quick connector 74 by a plurality of conductive blocks 201 arranged in a cross-shaped circumferential array inside it.

[0042] In this embodiment, the detachable connection principle between the detachable quick-connect connector and the wire-clamping terminal is as follows: First, the conductive rod of the detachable quick-connect connector is inserted through the guide post, and then passes through the conductive posts inside the mounting ring until the cross-shaped conductive head is inserted into the conductive ring on the conductive disk, so that the cross-shaped conductive head is precisely engaged with the conductive blocks arranged in a "+" shape. Figure 6-7 As shown, the limiting ring is located in the guide post, and the threaded seat is engaged with the internal thread of the guide post. Since the elastic locking rod and the threaded seat are rotatably connected, as the threaded seat is screwed into the guide post, the elastic locking rod is moved to correspond with the slot and continues to be screwed in, so that the elastic locking rod and the slot are engaged and connected. At this time, the limiting ring is located at the bottom of the guide post. At this time, the cross-shaped conductive head and the conductive ring are fully engaged and connected. After engagement, the conductive rod is electrically connected to the wiring detection unit and the adaptive bypass module. When disassembling, simply squeeze the elastic locking rod inward and then unscrew the threaded seat to achieve the disassembly operation, realizing the detachable quick connector and the wire connection terminal.

[0043] Specifically, the tail conductive rod is connected to the internal circuit, and the continuity sensor of the wiring detection unit immediately detects the contact status. If the contact is good, the corresponding fault indicator light goes out, and the portable operation terminal displays "wiring is normal"; if the contact is poor (such as loose clamping or non-conductive conductive pin), the fault indicator light stays on, and the terminal prompts "clamp contact failure".

[0044] The detachable quick-connect connector 74 includes a conductive rod 41. One end of the conductive rod 41 is provided with a cross-shaped conductive head 42 that engages with the conductive ring 29, and the other end is provided with a threaded seat 44 that is threadedly connected to the guide post 25. An elastic locking rod 45 is installed on the inner end face of the threaded seat 44, and a limit ring 43 is fitted on the end of the conductive rod 41 near the threaded seat 44. The detachable quick-connect connector 74 is connected to a meter box terminal quick-connect connector via a connecting wire 75. The meter box terminal quick-connect connector is a snap-on wire clamp 76, and the snap-on wire clamp 76 includes an insulating... The insulating post 61 has a conductor 62 inside. The free end of the insulating post 61 is provided with a spring-loaded quick-release clamp 63. The spring-loaded quick-release clamp 63 has a clamping body 64 that is electrically connected to the conductor 62 inside. The free end of the clamping body 64 is provided with an outward-folding guide part 65. The inner end face of the outward-folding guide part 65 is provided with a baffle 66. The clamping body 64 is provided with a cross elastic buckle 67 near the outward-folding guide part 65. The inner side of the telescopic cross elastic buckle 67 is provided with a spring telescopic pull rod 68.

[0045] As a feasible implementation method, the quick-connect connector for the meter box terminals uses a snap-on clamp. Its working principle involves a spring-loaded spring resetting mechanism for mechanical clamping, a serrated surface and conductive silicone pad for electrical conductivity, and a wiring detection unit that monitors the contact status in real time. The specific connection process is as follows: The spring-loaded quick-release clamp has a U-shaped opening and closing design, is integrally molded from all copper, has no splicing solder points, and is suitable for wire diameters of 2.5-10mm², with a rated current carrying capacity of ≤63A, meeting the wiring requirements of single-phase / three-phase energy meters; specifically, as follows... Figure 9As shown, the clamping body has a U-shaped groove structure. The inner wall of the groove has serrated anti-slip texture (tooth depth 0.3mm, tooth pitch 0.8mm) to increase the contact area with the terminal / wire and prevent loosening after clamping. A conductive silicone pad (thickness 0.5mm, high temperature resistance 120℃) is attached to the inner side of the groove to fill the contact gap and achieve low-resistance electrical conduction, which not only improves contact conductivity but also avoids hard contact scratching the surface of the terminal / wire. The outer end face of the clamping body has an outward-folding guide part, which facilitates the terminal / wire to move inward from the opening of the clamping body, squeeze the cross elastic buckle, and enter the interior of the clamping body. The cross-elastic buckle uses a manganese steel spring (nickel-plated for rust prevention) as the opening and closing power source. The spring is movably connected to the clamping body through a spring telescopic rod. After the terminal / wire is pressed inward into the clamping body, the cross-elastic buckle automatically clamps and limits the terminal / wire located inside the clamping body. Then, the spring telescopic rod can drive the cross-elastic buckle to move towards the clamping body, causing the cross-elastic buckle to retract and the spring opening to open (maximum opening distance 15mm). After releasing, the spring returns to its original position, and the wire clamp automatically clamps with a clamping force ≥80N.

[0046] Clip-on wire clamps are universal terminal adapters, mainly compatible with threadless crimped, in-line terminals / wire terminals in meter boxes, including: ① integrated copper busbar terminals commonly found in residential meter boxes (A / B / C / N phase busbars, 1-3mm thick, 5-10mm wide); ② copper wire terminals directly led out from outdoor single meter boxes (exposed wire core after stripping, 2.5-10mm²); ③ spring-loaded terminals in small commercial meter boxes (threadless, terminal type held by spring clips).

[0047] This invention relates to an adaptive uninterrupted power meter replacement device and method applicable to single-phase / three-phase energy meters of different specifications. It enables rapid, safe, and accurate uninterrupted replacement of energy meters of different specifications, improving the efficiency and safety of meter replacement operations. In use, the invention features a rational structural design with collaborative modules, achieving adaptive adaptation to single-phase / three-phase energy meters of different specifications, rapid and accurate wiring, precise calibration of metering data, intelligent wireless operation, and comprehensive safety protection, overcoming many shortcomings of existing devices. The device has a portable, integrated structure, requiring no modification to the meter box, adapting to various operating scenarios, significantly improving the efficiency and safety of meter replacement operations, and ensuring error-free metering data. It can be widely used in the periodic replacement and fault replacement of energy meters in power systems, possessing extremely high industrial practicality and market promotion value. This invention has the advantages of a rational structure, achieving single-phase / three-phase adaptive operation, automatic wiring matching, precise metering calibration, intelligent remote operation, and comprehensive safety protection. Example 2

[0048] like Figure 1 , 10As shown in Figures -11 and 13-16, an adaptive energy meter uninterrupted replacement device is applicable to the uninterrupted replacement of single-phase / three-phase energy meters of different specifications. It includes a box 3, which consists of a core board base 4 and a box cover that is movably connected to the core board base 4 by a hydraulic rod assembly 8. A portable operating terminal 6 is detachably installed on the inner side of the box cover. The core board base 4 is equipped with an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module 7 is provided on one side of the upper surface of the core board base 4. The main control unit is electrically connected to the adaptive bypass module, the intelligent metering matching module, the safety protection module, and the multi-interface quick-connect module 7, respectively. The portable operating terminal 6 is wirelessly connected to the main control unit.

[0049] The quick-connector for the meter box terminal is a threaded crimp quick-connector 77. The threaded crimp quick-connector 77 includes an insulating housing 701. A locking nut 702 is provided at the lower end of the insulating housing 701. A sliding post 703 is provided at the upper part of the insulating housing 701. A crimping post 704 is provided at the upper end of the sliding post 703. An insulating screw handle 705 is fitted on the outside of the sliding post 703.

[0050] As another feasible implementation, this embodiment has the same structure as Embodiment 1, except that the quick-connect connector for the meter box terminal adopts a threaded crimping quick-connect connector, with a copper body and an insulated screw handle. It is compatible with standard threaded terminals of the meter box, with a total weight of ≤30g, a rated current carrying capacity of ≤80A, and is compatible with three common thread specifications: M4 / M5 / M6. Its working principle is to achieve mechanical fixation by utilizing the pre-tightening force of the threaded screw, and to achieve large-area electrical conduction by using concentric anti-slip textures. The threaded crimping increases the contact area and provides low-resistance conductivity. The wiring detection unit detects the conductivity status of the threaded crimping. The specific connection process is as follows: the crimping post is a circular copper crimping plate (12mm in diameter and 3mm in thickness). The inner side of the crimping plate has concentric anti-slip textures (to increase the contact area with the terminal), and the center is a threaded through hole (compatible with M4 / M5 / M6 threads, with a built-in elastic copper sleeve to adapt to different thread diameters); the insulated screw handle is sleeved on the outside of the crimping post and is made of flame-retardant ABS material (high temperature resistance 150℃, insulation resistance ≥1000MΩ). The surface features a grid-like anti-slip texture for easy manual tightening without tools. Tightening torque is ≥5 N·m to prevent loosening of the threads. During use, manually turn the insulated handle counter-clockwise to increase the distance between the crimping post and the handle to 8 mm (enough to accommodate the terminal / wire core). Insert the threaded through-hole of the crimping post into the inlet / outlet threaded terminal of the meter box, ensuring the concentric anti-slip texture of the crimping post is fully in contact with the terminal surface. Then, turn the insulated handle clockwise, utilizing the pre-tightening force of the threads to tighten the crimping post. Tighten the terminal in the correct direction until you feel significant resistance (torque ≥ 5 N·m). The concentric anti-slip texture prevents loosening after crimping. The elastic copper sleeve adapts to different thread specifications, ensuring the sealing and conductivity of the crimp. Connect the detachable quick connector to the wire clamp connection terminal. The wiring detection unit immediately checks the contact status. If the crimp is good, the corresponding fault indicator light goes out, and the terminal displays "Wiring normal". If the crimp is loose (e.g., insufficient tightening torque), the fault indicator light flashes, and the terminal prompts "Threaded connector not crimped tightly".

[0051] Threaded crimp quick connectors are mainly compatible with threaded crimp terminals in meter boxes. They are the most common terminal type in power systems, covering more than 80% of residential and commercial meter boxes. Specifically, they include: ① Threaded terminals for electricity meters in residential meter boxes (M4 / M5 threaded post terminals at the inlet / outlet ends of the meter box); ② Fixed threaded crimp terminals in outdoor rainproof meter boxes (copper threaded posts with nuts, used to fix conductors); ③ High-current threaded terminals in commercial three-phase meter boxes (M6 thread, compatible with conductors of 10mm² and above, with a large rated current carrying capacity). Example 3

[0052] like Figure 1 and 12As shown in Figure -16, an adaptive energy meter uninterrupted replacement device is applicable to the uninterrupted replacement of single-phase / three-phase energy meters of different specifications. It includes a box 3, which consists of a core board base 4 and a box cover that is movably connected to the core board base 4 by a hydraulic rod assembly 8. A detachable portable operating terminal 6 is installed on the inner side of the box cover. The core board base 4 is equipped with an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module 7 is provided on one side of the upper surface of the core board base 4. The main control unit is electrically connected to the adaptive bypass module, the intelligent metering matching module, the safety protection module, and the multi-interface quick-connect module 7, respectively. The portable operating terminal 6 is wirelessly connected to the main control unit.

[0053] The quick-connect connector for the meter box terminal is a plug-in connector 78. The plug-in connector 78 includes an insulating protective sleeve 81, and a pin-type mating plug body 82 is provided on the outer end of the insulating protective sleeve 81.

[0054] As another feasible implementation, this embodiment has the same structure as Embodiment 1, except that the quick-connect connector for the meter box terminal adopts a insert-type connector. The insert-type connector is a pin-type male-female quick-connect connector with an overall in-line plug-in structure. It has a copper insert + insulating sleeve, which is a standardized industrial connector structure. The total weight is ≤15g, the rated current is ≤40A, the plug-in life is ≥1000 times, it is compatible with new standardized meter boxes, and the connection time is ≤2s. The working principle is that the spring in the female terminal clamps the male insert, and the silver-plated insert achieves low-resistance electrical conduction. The wiring detection unit detects the plug-in contact status. The specific connection process is as follows: The main body of the pin-type plug is a flat copper insert (thickness 1.5mm, width 6.3mm, which is the standard specification of 6.3mm male insert), which is convenient for insertion into the female terminal. The surface of the insert is silver-plated (silver plating thickness 0.05mm) to further reduce the contact resistance (≤3mΩ). The tail of the insert is crimped to the conductive wire without solder joints, which improves the connection. Reliability: The insulating protective sleeve is made of flame-retardant PVC material and wraps around the main body of the insert (only the front insertion part is exposed). The surface of the sleeve has a textured anti-slip design for easy manual insertion and removal. The tail of the sleeve is a stress-relieving section (corrugated) to prevent internal wire breakage due to wire bending. When using, pinch the insulating protective sleeve of the connector with your thumb and forefinger, align the silver-plated copper insert with the female insert slot of the meter box, and insert it straight in until you feel a clear locking sensation (the spring clip in the female terminal clamps the insert). This completes the male-female connection. The insertion depth is ≥10mm to ensure full contact. Connect the detachable quick connector to the wire connection terminal. The wiring detection unit immediately detects the contact status. If the insertion is good, the corresponding fault indicator light goes out, and the terminal displays "Wiring normal". If the insertion is not in place (such as insufficient insertion depth), the fault indicator light stays on, and the terminal prompts "Insufficient insertion of the insert connector". When replacing / removing, simply pinch the insulating sleeve and pull it out. The spring clip in the female terminal will automatically release without residue, allowing for reuse.

[0055] Plug-in connectors are mainly compatible with quick-connect terminals with female plugs in meter boxes. They are a standardized terminal type for new meter boxes and have been widely used in smart meter boxes and integrated meter collection boxes in recent years. Specifically, they include: ① 6.3mm female plug-in terminals in smart meter boxes (female connectors pre-installed at the meter box's inlet / outlet terminals, precisely matched with 6.3mm male plugs); ② Modular plug-in terminals in integrated meter collection boxes (threadless, relying on male and female plug mating for wiring, facilitating batch meter replacement); ③ Female plug terminals at the wire end in small household meter boxes (6.3mm female plugs crimped to the end of the wire, directly mating with plug-in connectors).

[0056] Specifically, after the three types of connectors in Examples 1-3 are snapped into the insulating protective housing, they are all uniformly tested by the wiring detection unit. The detection principle is that the continuity sensor detects the circuit resistance. If the circuit resistance is ≤5mΩ, the contact is judged to be good; otherwise, the contact is judged to be faulty. The fault signal is transmitted to the main control unit in real time and is prompted by both "fault indicator light + portable operation terminal". The staff can quickly troubleshoot according to the prompts without the need for auxiliary testing tools such as multimeters, thus improving wiring efficiency and accuracy. The structure of the three quick-connect connectors is designed specifically for the mainstream types of existing meter box terminals. It is combined with the universal snap-fit ​​structure of the multi-interface quick-connect module to achieve rapid adaptation to different meter boxes and different terminal types, completely solving the problems of single wiring connector type, poor adaptability, and cumbersome operation of existing meter replacement devices. Example 4

[0057] like Figure 1-3 As shown, an adaptive energy meter uninterrupted replacement device has the same structure as Embodiments 1, 2, or 3, except that it also includes a base. The base is connected to the box using a scissor-type lifting assembly, and a sliding drawer storage box is movably installed at the bottom of the box. The base includes a bottom frame for placing the box, and a pull-out handle is movably installed on the outer side of the bottom frame. The inner end of the pull-out handle is detachably connected to the inner wall of the bottom frame using a limiting bolt. A set of wheels is provided on the other outer side of the bottom frame, and multiple through holes are provided on both short sides of the bottom frame. T-shaped positioning rods are inserted into the multi-spacing through holes; rectangular boxes are provided on both sides of the lower surface of the core plate base; the scissor-type lifting assembly includes riser guides located on the inner walls of the short sides of the bottom frame and the inner walls of the rectangular boxes; each riser guide has a guide slot inside; a perforated plate is also provided between the riser guide and the inner wall of the bottom frame; the cross-scissor telescopic bracket is composed of multiple folding rods hinged in an "X" shape, and the lower and upper ends of the cross-scissor telescopic bracket are respectively movably connected to the corresponding guide slots and the end of the riser guide away from the guide slot, such as... Figure 2-3 As shown, this allows for height adjustment of the box, making it suitable for use under different working conditions. After use, the cross-scissor telescopic bracket can be retracted, allowing the core plate to fall into the bottom frame. Then, the pull-out handle can be pulled out to move the box with the wheels, making it convenient and flexible to use. Example 5

[0058] like Figure 17 As shown, a method for using an adaptive energy meter uninterrupted replacement device is described above. Based on this device, uninterrupted replacement of multiple energy meters of different specifications is achieved. The method includes the following steps: S1: Device initialization: Select and install the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module according to the specifications of the meter box inlet / outlet terminals, turn on the device power, the main control unit completes the self-test of each module, and the portable operation terminal establishes a wireless communication connection with the main control unit. S2: Wiring and Testing: Connect the quick-connect connectors of the meter box terminals to the meter box inlet and outlet terminals respectively. The wiring test unit tests the continuity of each connector. If there is a wiring fault, the fault indicator light will light up and the portable operation terminal will prompt the operator to rewire until the test is passed. S3: Adaptive Matching: The voltage adaptation unit detects the incoming voltage type and completes 220V / 380V voltage adaptation; the current adaptive adjustment unit automatically adjusts the bypass carrying current according to the rated current of the energy meter; the phase recognition unit identifies the wiring phase of the energy meter and sends the phase information to the main control unit; the main control unit controls the bypass module to achieve precise phase matching with the energy meter. S4: Bypass Activation: Staff issue a bypass activation command through a portable operating terminal. The main control unit controls the bypass on / off control unit to close, and the device and the energy meter form a parallel bypass. The user's electricity consumption is switched to the bypass channel. The metering chip of the smart metering matching module starts to measure the bypass electricity consumption data. The power calibration unit calibrates the metering data in real time according to the accuracy of the energy meter. S5: Electricity meter replacement: The staff removes the electricity meter to be replaced, installs the new electricity meter and completes the wiring. After confirming that the wiring of the new electricity meter is correct, the staff issues a bypass disconnection command through the portable operating terminal. S6: Metering data synchronization: The main control unit sends the calibrated bypass metering data to the portable operating terminal. The staff uses this data as the initial power of the new energy meter to complete the data synchronization and achieve error-free power connection. S7: Device Removal: After the bypass is disconnected, disconnect the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module in sequence, turn off the device power supply, and complete the replacement of the energy meter without power interruption.

Claims

1. An adaptive uninterrupted power meter replacement device, suitable for uninterrupted power meter replacement of different specifications of single-phase / three-phase energy meters, comprising a housing, characterized in that: The box consists of a core board base and a cover that is movably connected to the core board base via a hydraulic rod assembly. A portable operating terminal is detachably mounted on the inner side of the cover. The core board base contains an adaptive bypass module, an intelligent metering matching module, a safety protection module, and a main control unit. A multi-interface quick-connect module is provided on one side of the upper surface of the core board base. The main control unit is electrically connected to the adaptive bypass module, the intelligent metering matching module, the safety protection module, and the multi-interface quick-connect module. The portable operating terminal is wirelessly connected to the main control unit. The adaptive bypass module includes a current adaptive adjustment unit, a voltage adaptation unit, and a bypass on / off control unit; the intelligent metering matching module includes a metering chip, a phase recognition unit, and a power calibration unit; the multi-interface quick-connect module includes an insulating protective housing, wire-clamping connection terminals, a fault indicator light, and a detachable quick-connect connector; the safety protection module includes an overcurrent protection unit, an overvoltage protection unit, a leakage protection unit, and a temperature monitoring unit.

2. The device for replacing the self-adapting electric energy meter without power cut according to claim 1, characterized in that: The current adaptive adjustment unit includes an adjustable shunt resistor, a current sensor, and an adjustment drive circuit. The current sensor detects the bypass current in real time and feeds it back to the main control unit. The main control unit adjusts the resistance value of the adjustable shunt resistor through the adjustment drive circuit to achieve current adaptive adjustment. The voltage adaptation unit includes a voltage detection module and a voltage conversion circuit. The voltage detection module detects the type of the incoming line voltage and feeds it back to the main control unit. The main control unit controls the voltage conversion circuit to achieve automatic voltage adaptation.

3. The adaptive energy meter uninterrupted replacement device as described in claim 2, characterized in that: The phase identification unit includes a phase detection chip and a terminal identification probe. The terminal identification probe is attached to the terminal of the energy meter. The phase detection chip identifies the A / B / C / N phase connection relationship and sends the phase information to the main control unit.

4. The apparatus for replacing an adaptive power meter without power interruption according to claim 3, wherein: The main control unit includes a microcontroller, a storage unit, and a wireless communication unit. The storage unit contains metering parameters and wiring phase information for different specifications of electricity meters. The wireless communication unit uses Bluetooth / 4G / 5G to achieve wireless communication with the portable operating terminal. The portable operating terminal includes a display screen, operation buttons, and an audible and visual alarm.

5. The apparatus for replacing an adaptive power meter without power interruption according to claim 1, wherein: The insulating protective housing is provided with a plurality of wire-clamping connection terminals and fault indicator lights corresponding to each wire-clamping connection terminal in sequence at intervals. The insulating protective housing is provided with a wiring detection unit. The continuity sensor built into the wiring detection unit is electrically connected to the fault indicator lights and the wire-clamping connection terminals. The detachable quick connector is detachably connected to the wire-clamping connection terminals.

6. The apparatus for replacing an adaptive power meter without power interruption according to claim 5, wherein: The wire connection terminal includes a mounting ring installed inside the insulating protective housing. A conductive post is provided at the lower part of the mounting ring, and a conductive disk is provided at the bottom end face of the conductive post. The conductive disk is electrically connected to the conduction sensor by multiple conductive rods arranged in a circular pattern. A positioning seat connected to the surface of the insulating protective housing is installed on the upper part of the mounting ring. A guide post is provided inside the positioning seat. The guide post has an internal thread. A set of slots is symmetrically arranged near the upper edge of the guide post. A conductive ring is provided on the lower surface of the conductive disk. The conductive ring is electrically connected to a detachable quick connector by multiple conductive blocks arranged in a uniform "+" circumference array inside it.

7. The apparatus of claim 6, wherein: the first and second connectors are configured to be connected to the first and second terminals of the meter, respectively, and the first and second connectors are configured to be connected to the first and second terminals of the replacement meter, respectively. 7 The detachable quick-connect connector includes a conductive rod. One end of the conductive rod is provided with a cross-shaped conductive head that engages with a conductive ring, and the other end is provided with a threaded seat that is threadedly connected to a guide post. An elastic locking rod is installed on the inner end face of the threaded seat. A limit ring is fitted on the end of the conductive rod near the threaded seat. The detachable quick-connect connector is connected to a meter box terminal quick-connect connector via a connecting wire. The meter box terminal quick-connect connector is a snap-on clamp. The snap-on clamp includes an insulating post. A conductor is provided inside the insulating post. A spring-loaded quick-release clamp is provided at the free end of the insulating post. A clamping body electrically connected to the conductor is provided inside the spring-loaded quick-release clamp. An outward-folding guide portion is provided on the outer free end of the clamping body. A baffle is provided on the inner end face of the outward-folding guide portion. A cross elastic buckle is provided inside the clamping body near the outward-folding guide portion. A spring telescopic pull rod is provided on the inner side of each telescopic cross elastic buckle.

8. The adaptive energy meter uninterrupted replacement device as described in claim 7, characterized in that: The quick-connector for the meter box terminal is a threaded crimp quick-connector. The threaded crimp quick-connector includes an insulating housing, a locking nut at the lower end of the insulating housing, a sliding post at the upper part of the insulating housing, a crimping post at the upper end of the sliding post, and an insulating screw handle fitted on the outside of the sliding post.

9. The adaptive energy meter uninterrupted replacement device as described in claim 7, characterized in that: The quick-connector for the meter box terminal is a plug-in type connector. The plug-in type connector includes an insulating protective sleeve, and a pin-type mating plug body is provided on the outer end of the insulating protective sleeve.

10. A method of using an adaptive energy meter uninterrupted replacement device, which realizes uninterrupted replacement of multiple specifications of energy meters based on the adaptive energy meter uninterrupted replacement device as described in any one of claims 1-9, characterized in that: The method includes the following steps: S1: Device initialization: Select and install the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module according to the specifications of the meter box inlet / outlet terminals, turn on the device power, the main control unit completes the self-test of each module, and the portable operation terminal establishes a wireless communication connection with the main control unit. S2: Wiring and Testing: Connect the quick-connect connectors of the meter box terminals to the meter box inlet and outlet terminals respectively. The wiring test unit tests the continuity of each connector. If there is a wiring fault, the fault indicator light will light up and the portable operation terminal will prompt the operator to rewire until the test is passed. S3: Adaptive Matching: The voltage adaptation unit detects the incoming voltage type and completes 220V / 380V voltage adaptation; the current adaptive adjustment unit automatically adjusts the bypass carrying current according to the rated current of the energy meter; the phase recognition unit identifies the wiring phase of the energy meter and sends the phase information to the main control unit; the main control unit controls the bypass module to achieve precise phase matching with the energy meter. S4: Bypass Activation: Staff issue a bypass activation command through a portable operating terminal. The main control unit controls the bypass on / off control unit to close, and the device and the energy meter form a parallel bypass. The user's electricity consumption is switched to the bypass channel. The metering chip of the smart metering matching module starts to measure the bypass electricity consumption data. The power calibration unit calibrates the metering data in real time according to the accuracy of the energy meter. S5: Electricity meter replacement: The staff removes the electricity meter to be replaced, installs the new electricity meter and completes the wiring. After confirming that the wiring of the new electricity meter is correct, the staff issues a bypass disconnection command through the portable operating terminal. S6: Metering data synchronization: The main control unit sends the calibrated bypass metering data to the portable operating terminal. The staff uses this data as the initial power of the new energy meter to complete the data synchronization and achieve error-free power connection. S7: Device Removal: After the bypass is disconnected, disconnect the quick-connect connectors of the meter box terminals of the multi-interface quick-connect module in sequence, turn off the device power supply, and complete the replacement of the energy meter without power interruption.

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