135 results about "Energy metering" patented technology

The invention discloses an electric power measurement data management system based on cloud edge collaboration and an electric quantity distributed acquisition method, and relates to the technical field of electric power information acquisition and processing. The system comprises an intelligent electric meter terminal layer, an edge computing node layer, a regional collaborative gateway layer and a cloud data center. The intelligent terminal can dynamically adjust the sampling frequency according to the load change rate and the historical volatility, and identifies abnormity through an LSTM-ATT model; the edge nodes realize prediction caching based on Kalman filtering and RMSE judgment; the regional gateway executes dynamic time warping and consistency arbitration of topological weighting; and the cloud end completes digital twinborn modeling and exception evidence storage. According to the method, the real-time performance and accuracy of electric power data acquisition are improved, the communication bandwidth occupation is reduced, the system abnormity sensing capability and the operation stability are enhanced, and the method is suitable for an intelligent power distribution network and a distributed energy metering scene.

The invention relates to an energy digital metering monitoring and tracking method and system, and relates to the technical field of energy digital management, and the method comprises the steps: deploying a plurality of energy metering terminals in a physical energy network to collect energy consumption data in real time, and executing local energy carbon emission metering through an embedded carbon emission calculation assembly; uploading a metering result to a cloud monitoring center, and constructing a virtual mapping model based on a digital twinning technology in combination with topological information of a physical energy network; synchronizing the measurement data to the virtual mapping model, and performing visual tracking on the measurement data in combination with topology analysis and a particle tracking technology to generate an energy flow dynamic visual map; carbon emission footprint traceability tracking is carried out according to the atlas, and energy digitization metering is realized based on a traceability result. According to the invention, the problems of insufficient energy metering precision and incomplete carbon footprint traceability caused by the lack of dynamic visual tracking means due to the fact that differential adaptation is not carried out in combination with metering characteristics in traditional energy metering monitoring are solved.

This invention belongs to the field of metering box technology, specifically a fireproof energy metering box. It includes a metering box body, a moisture-proof mechanism located on the upper right side wall of the metering box body, and a pressure relief mechanism located on top of the moisture-proof mechanism. The pressure relief mechanism includes a shell, with a limiting plate fixedly connected inside the shell. A ball groove with a tube groove is formed at the center of the limiting plate. A blocking ball is placed on top of the limiting plate, and the blocking ball is adapted to the ball groove. A connecting rod is fixedly connected to the top of the blocking ball, and a fixing spring is connected to the top of the connecting rod. During heat dissipation, the airflow pushes the blocking ball upwards, allowing heat to escape through the louvers. In case of fire, the blocking plate closes, and the fixing spring pushes the blocking ball downwards to block the ball groove. When the internal pressure is too high, the airflow pushes the blocking ball upwards, achieving pressure relief inside the metering box and solving the problem of increased pressure and explosion risk during a fire.

The invention relates to the technical field of detection and calibration, and particularly discloses an efficient flowmeter detection and calibration method based on gravitational potential energy, which comprises the following steps: S1, building a detection and calibration device which comprises a height-adjustable water tank, a capacitance liquid level sensing unit, a water inlet control unit, a flow regulation and calibration unit and a control and display unit; s2, liquid level signals in the height-adjustable water tank are collected in real time through a capacitance liquid level sensing unit and fed back to a control and display unit, the control and display unit regulates and controls an execution element of a water inlet control unit, and the liquid level difference in the water tank is stably controlled within a preset threshold value; and S3, the installation height of the height-adjustable water tank is adjusted to change the gravitational potential energy of the fluid. The method effectively solves the problems of poor range adaptability, insufficient precision, low efficiency and the like in the existing flowmeter calibration technology, has universality, stability, high precision and high efficiency, and is suitable for flowmeter batch calibration scenes in the fields of industrial production, energy metering and the like.

The invention provides a self-adaptive error correction method for dynamic electric energy metering, and belongs to the technical field of artificial intelligence and electric energy metering crossing. The method comprises the steps of S1, performing training, compression, deployment and drift compensation training on a created self-adaptive error prediction model; s2, the electric energy metering device collects real-time operation data and inputs the real-time operation data into the self-adaptive error prediction model to obtain an error prediction result, and self-adaptive error correction is executed based on the error prediction result to obtain a corrected metering value; s3, performing digital signature and encryption on the error prediction result and the corrected metering value to obtain a metering data packet, and transmitting the metering data packet to a server after block chain evidence storage; and S4, the server decrypts and verifies the metering data packet to obtain an error prediction result and a corrected metering value, and encrypts and stores the corrected metering value. The electric energy metering error correction method has the advantages that the accuracy, timeliness, reliability, convenience and safety of electric energy metering error correction are greatly improved.

The present application relates to the technical field of short circuit detection, and provides an alternating current charging pile charging socket short circuit detection circuit and a detection method thereof. The alternating current charging pile charging socket short circuit detection circuit comprises: a charging circuit connected to a power frequency alternating current power supply, wherein the charging circuit comprises an alternating current energy metering circuit, a relay and a power socket connected in series; a detection circuit connected in parallel to both ends of the relay; and a control circuit connected to the alternating current energy metering circuit and the relay respectively. The alternating current charging pile charging socket short circuit detection circuit provided by the present application fundamentally avoids the charging pile failure caused by the load short circuit of the power socket, and reduces the operation and maintenance cost of the product.

The application discloses a cleaning method for communication collection data of energy consumption metering instruments in a cigarette factory, which comprises the following steps: obtaining a meter code value B2 collected this time; judging whether the meter code value B2 collected this time is less than a last time archived meter code value B1; if yes, determining a meter code value B and a consumption Y in a time interval between two times of collection according to whether the metering instrument is full of a range; if no, judging whether the consumption Y in the time interval between the two times of collection is normal according to a time period in which the collected data is located, and determining the meter code value B and the consumption Y in the time interval between the two times of collection according to a judgment result of the consumption Y. The cleaning method for communication collection data of energy consumption metering instruments in a cigarette factory can automatically clean and correct when factory energy metering collection data is abnormal, and can guarantee orderly promotion of energy saving and emission reduction work.

The application discloses a heat meter online fault diagnosis method and system, and relates to the technical field of energy metering.The system runs, real-time data collection and preprocessing are realized through integrated sensor groups, key features are extracted to form a feature vector FVEC, and an online anomaly detection algorithm and a fault type judgment model are used to accurately calculate an anomaly detection index AS and a fault feature probability index TYP.These data can not only reflect the health status of the system in real time, but also further optimize the response strategy and fault judgment by executing an iteration module, so that the system has the ability of self-diagnosis and adaptive adjustment.This optimization process can effectively solve the problem that the traditional heat meter system cannot realize online real-time processing and fault detection, improve the accuracy and response speed of fault identification, avoid equipment damage or energy waste caused by delayed detection, and further ensure the continuous and stable operation of the system.

The invention discloses a tidal current direction judgment method and system, an electric energy meter, a fusion terminal and a medium, relates to the technical field of electric power metering, and effectively solves the problem of electric energy mismetering caused by the fact that a traditional metering method cannot distinguish transient fluctuation and stable steering when the tidal current direction is frequently switched by introducing a buffer mechanism and stability monitoring. According to the method, transient tidal current direction change caused by instantaneous disturbance or jitter near a critical point in a power grid can be filtered out, and it is ensured that only the tidal current direction subjected to stable judgment is used for electric energy metering, so that the accuracy and reliability of electric energy metering in a distributed power supply access scene are remarkably improved; the method is mainly a software algorithm innovation, the hardware structure of the existing electric energy meter or fusion terminal does not need to be changed, the method can be realized through firmware upgrading, the implementation cost is low, and the compatibility is high.

This invention discloses a single-phase multi-position metal energy metering box and its installation method, belonging to the field of electrical equipment technology. It includes a box body, a detachable rainproof cover fixed to the top of the box body, a rear wall with a vent, a detachable filter screen installed at the vent, a bottom plate with a drainage area, and a hinged door. The rainproof cover folds downwards around its perimeter to form an annular rainproof section, creating an annular ventilation cavity between it and the top of the box body, achieving top ventilation and rain protection. The vent on the rear wall faces the wall and is located within the projection range of the annular rainproof section. The rear wall is stamped to form an outwardly protruding flow-guiding structure, with downwardly sloping flow-guiding grooves between adjacent protrusions, forming a rear ventilation gap with the wall. The drainage area of ​​the bottom plate has a water collection trough, a drainage hole, and a water-blocking cap. The door has a sealing strip and a flow-guiding groove. This invention, through integrated innovation of the box body structure, systematically solves the problems of rainproofing, heat dissipation, drainage, and filter maintenance of outdoor metering boxes.

The invention provides a green accommodation resource management method and system based on real-time metering and abnormal behavior recognition, and relates to the technical field of energy metering. According to the invention, water consumption, electricity consumption and water temperature data of guest rooms are collected, cold and hot water flow is decomposed, heat energy consumption is calculated, and continuous water consumption abnormity identification and linkage valve control treatment are realized; accumulating energy consumption according to a statistical time period based on the check-in record, converting a guest room carbon emission index, generating guest reward information when an energy-saving standard is met, and writing the guest reward information into a check-in account during check-out settlement; and comparing the total energy consumption of the hotel with the energy consumption summary difference value of the guest room to output an energy consumption abnormity positioning result. According to the invention, room-level energy consumption real-time metering, abnormity identification and energy-saving evaluation are realized, and the performability and accounting performance of green accommodation resource management are improved.

The utility model relates to a kind of metering box mounting structure of convenient installation and disassembly, to solve the technical problem that current electric energy metering box needs to be disassembled for maintenance after installation, needs to disassemble multiple bolts, thereby increase construction difficulty, cause the increase of construction cost and time, affect construction efficiency, comprising: box, the rear end of the box is equipped with fixed plate, the front end opening of the box is equipped with box door;Mounting structure, between box and fixed plate, realize the quick disassembly of box, the utility model is longitudinally inserted and is installed by the sliding fit of inverted T type guide rail and the connecting frame of box, can quickly complete the preliminary positioning of box and fixed plate, cooperate the two support plates of box bottom and top guide rail and form "three-point type" rigid support, the horizontal installation of support plate ensures that box is not inclined when bearing, cooperate the locking effect of limiting component, so that box is stably positioned on support plate, improve the stability of box installation.

This invention discloses a photovoltaic energy storage system, including a shared energy storage module, an inverter control module, and multiple energy metering modules. The shared energy storage module includes multiple energy storage batteries for storing electrical energy or supplying power to load modules. The inverter control module is connected to each photovoltaic power generation module, each load module, the shared energy storage module, and the power grid. It controls the electrical energy generated by each photovoltaic power generation module to supply power to each load module, store it in the shared energy storage module, or connect it to the power grid; the shared energy storage module supplies power to each load module. Each energy metering module is set up for each user, located between each user's photovoltaic power generation module, load module, and inverter control module, for detecting power generation and consumption. The inverter control module is configured to calculate absolute power generation or absolute power consumption based on power generation and consumption; accumulate pre-stored power based on absolute power generation and absolute power consumption; and control the power supply to each user based on the pre-stored power. This improves fairness and efficiency.

The invention belongs to the technical field of power equipment, and discloses an electric energy metering box with a heat dissipation waterproof sealing structure, the electric energy metering box comprises a box body, a top cover mechanism and a temperature sensor, the top cover mechanism and the temperature sensor are respectively arranged on the top and inside the box body, and a rainfall sensor is arranged on the top of the top cover mechanism. According to the scheme, airflow in rainy weather penetrates through the cover body, the flow guide cover and the partition piece, the pressure intensity between the cover body and the flow guide cover is smaller than that of the bottom of the box body, hot airflow in the box body can be pumped out through the opening in the top of the cover body and the filter screen, and external air can enter the box body through the electric fan and the drying part to be supplemented; according to the outdoor electric energy metering box, the cover body is driven by the lead screw motor and the filtering ventilation mechanism is driven to be exposed outside, and at the moment, hot air in the box body can be quickly discharged outwards through the filtering ventilation mechanism. Rainwater is easily blown into the box body by wind; and the heat dissipation effect in the box body is poor in high-temperature weather.

This invention provides a phase correction circuit, an energy metering device, and a corresponding method thereof. The phase correction circuit provided in this embodiment includes: a first delay module for receiving at least two input signals with asynchronous phases, and obtaining a first delayed signal by performing a first delay of M sampling intervals on the phase-leading signal based on a first phase difference between a phase-leading signal and a phase-lag signal among the at least two input signals; and a second delay module for performing a second delay of less than one sampling interval on the first delayed signal based on a second phase difference between the first delayed signal and the phase-lag signal; wherein M is a positive integer greater than or equal to 1, and the second delayed signal is phase-synchronized with the phase-lag signal. Using this invention not only enables more accurate and faster phase correction, but also simplifies the circuit design, ensuring high phase resolution without occupying a large circuit area.

This invention discloses a method and system for correcting energy metering errors in electric vehicle charging piles. The method includes collecting energy metering error data of charging piles under three-dimensional operating conditions (different power, temperature, and humidity) and constructing a three-dimensional operating condition error database; hierarchically filtering high-confidence neighbor points to be interpolated to obtain a standardized set of high-confidence neighbor points; calculating the radial distance between the standardized point to be interpolated and each standardized high-confidence neighbor point in the standardized set to optimize the interpolation width parameter of the radial basis function and dynamically selecting the basis function type; introducing error confidence to correct the weights of the radial basis function; and weighted summing the corrected radial basis function weights and the energy metering errors of the high-confidence neighbor point set to obtain the corrected energy metering error value for the point to be interpolated. This invention aims to achieve accurate and real-time energy metering error correction under all operating conditions to improve the reliability of charging pile metering.

The invention discloses an electric power metering load analysis system and method based on intelligent prediction, and relates to the technical field of electric power systems and energy metering, and the system comprises the following modules: a data collection and preprocessing module which is used for collecting electric power parameters and executing preprocessing; the power system diagram module is used for constructing a power system diagram; the feature prediction module is used for generating a prediction feature vector by improving the MTGNN model; the exception identification module is used for calculating an exception score and identifying an exception node; the exception optimization module is used for generating an exception node power parameter optimization report; and the deployment feedback module is used for deploying the abnormal node power parameter optimization report to a power management system. According to the method, the limitation that a static model is low in data processing efficiency and poor in adaptability in traditional electric power metering load analysis is broken through, and an efficient and intelligent solution is provided for operation and management of an intelligent power grid.

This application relates to the fields of power technology and energy storage technology, and in particular to a method, apparatus, equipment, and medium for scheduling a grid-connected distributed energy system. The system includes at least one edge energy node, a distribution bus, and an energy metering device. When any edge energy node enters the current cycle, the system acquires the net external power collected by the energy metering device and compares it with the target power to obtain a power deviation value. Based on the power deviation value and the energy state information of the edge energy node, droop control calculation is performed to obtain the current energy storage output power. Based on the current energy storage output power, power output is executed and the cycle repeats. This application establishes independent control of each edge energy node in the grid-connected distributed energy system through droop control calculation. It effectively achieves coordinated control of system-level power without the need for a central controller, improving the reliability, autonomy, adaptability, and real-time performance of the grid-connected distributed energy system control.

This invention provides a method and apparatus for verifying the green electricity occupancy of smart rail shared charging stations. The method includes: acquiring time-slice energy metering data of the shared charging station; dividing smart rail vehicle charging events into time slices and calculating the total charging amount within each time slice; calculating the allocatable green electricity for a single charging event based on the time-slice energy metering data and the total charging amount within each time slice; calculating the upper limit of green electricity that a smart rail object can occupy based on the allocatable green electricity for a single charging event and the actual operational allocation of the vehicle after charging; and verifying the green electricity occupancy of the project based on the upper limit of green electricity that a smart rail object can occupy within a calculation period, based on physical metering data, charging events, and subsequent vehicle operation data, and thereby determining whether the green electricity occupancy in carbon neutrality declarations, carbon asset declarations, or carbon audits exceeds this upper limit.

1. The name of the design product: electronic single-phase AC energy meter PCB board. 2. The use of the design product: used for single-phase energy meter, PCB board with energy metering, communication and storage functions. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: front view. 5. The design product is a thin product, omitting the left view; the design product is a thin product, omitting the right view; the design product is a thin product, omitting the top view; the design product is a thin product, omitting the bottom view.

This application relates to the field of metering box anomaly detection technology, and discloses a method and system for detecting operational anomalies in intelligent metering boxes. The method includes: collecting measurement data from each sub-meter connected to the same energy metering box at predetermined time intervals; constructing a data sequence for each sub-meter based on the measurement data acquired over multiple consecutive time intervals; simultaneously collecting power data from each sub-meter while collecting its measurement data; identifying whether the power data of each sub-meter is less than a preset power threshold based on the power data; if it is lower than the power threshold, determining whether a measurement anomaly exists; if so, marking the measurement data at the corresponding acquisition time as invalid; calculating the coupling degree between any data sequence and other data sequences, setting a coupling threshold, and determining anomalies based on the calculated coupling degree and coupling threshold. This invention can improve the reliability and sensitivity of metering box anomaly detection.

The invention discloses a modern power grid efficient frequency spectrum and energy self-adaptive analysis method. The method comprises the following steps that power line signals used for electric energy metering are sampled in a power line; the method comprises the following steps: performing a series of analysis and processing on a power line signal by adopting a spectrum analysis algorithm, and decomposing the power line signal by utilizing a fast Fourier transform method, a self-adaptive dynamic iteration frequency domain analysis method and the like to obtain signal key information for power grid spectrum and power grid energy analysis and metering; a plurality of key power grid energy quality parameters are calculated by using a high-efficiency power grid energy analysis metering algorithm according to key information of a power line signal through high-efficiency power grid energy parameter detection algorithms such as a Hilbert filter method and a high-efficiency frequency domain effective value calculation and analysis method based on the Parseval theorem; the method is used for analyzing energy quality of power grid signals. According to the method, the problems of low calculation efficiency, limited calculation function and high calculation amount requirement in the existing power grid quality monitoring and energy metering technology are solved.

This invention relates to the field of power metering equipment technology, specifically an energy metering box, which includes a mounting box and a mounting back plate disposed on the inner wall of the mounting box. The mounting back plate has a mounting groove on its end face. A current transformer and a mounting base disposed at the end of the current transformer are also included. The mounting base contains an adjusting component and a locking component. The locking component cooperates with a moving block disposed inside the mounting block and is driven by the adjusting component. The moving block fixes the mounting base on the mounting back plate. An adapter clamp driven by a bidirectional screw allows for flexible adaptation to mounting base plates of different widths of current transformers, eliminating the need for customized boxes or accessories and effectively expanding the applicable scenarios of the metering box. A locking mechanism using bevel gear reversal and worm gear transmission enables convenient locking and unlocking of the installation position, avoiding locking failure and current transformer displacement caused by equipment vibration, accidental contact, or personnel, significantly improving the long-term operational stability of the equipment.

This invention discloses a solid-state transformer efficiency testing device and method, belonging to the fields of power electronics technology and power conversion testing technology. The device includes a 380V AC power supply. The output of the 380V AC power supply is connected to the input of an AC-DC module. The output of the AC-DC module is connected to a DC bus. The DC bus is connected to the power input of an inverter power supply unit array. The secondary side output of the inverter power supply unit array is connected to a high-voltage frequency converter module. The DC bus is also connected to the low-voltage DC output of the solid-state transformer under test via a feedback branch. The output of the high-voltage frequency converter module is connected to the high-voltage input of the solid-state transformer under test. An input-side energy metering device is installed between these components, and an output-side energy metering device is installed on the feedback branch. This invention eliminates the need for a high-voltage power supply and a high-power load, enabling continuous full-power operation and efficiency testing under different load rates. It offers advantages such as low cost, low power consumption, and grid friendliness.

The invention provides an electric energy metering method and device, electronic equipment and a readable storage medium, and belongs to the field of electric power grids, and the method comprises the steps: obtaining a first parameter value which comprises a first phase electric parameter value and a first electric energy value; acquiring a second parameter value; obtaining a relative error, wherein the relative error is calculated by the error unit according to the first phase electric parameter value and the second phase electric parameter value; residual errors corresponding to the first parameter value, the second parameter value and the relative error are calculated, and a plurality of residual errors are obtained; and adjusting the first parameter value and the second parameter value according to each residual error to obtain an electric energy metering value of the power grid. According to the electric energy metering method and device, the electronic equipment and the readable storage medium provided by the invention, the accuracy and reliability of electric energy metering can be improved.

This invention specifically relates to an adaptive compensation method for the wiring direction of a rail meter based on current flow direction detection, belonging to the field of energy metering technology. It includes: calculating the total energy based on the corrected active power through time integration; and converting this into a pulse output representing a fixed energy increment using a metering chip. In this invention, the original power value is low-pass filtered to remove high-frequency interference signals such as harmonics and instantaneous pulses from the power grid, ensuring the stability of the power detection value. Combined with a verification mechanism of three consecutive samples, it avoids the problem of misjudgment of flow direction caused by single instantaneous interference. Simultaneously, the meter program repeatedly executes the flow direction detection and wiring determination process at a fixed cycle, enabling timely response to mid-term changes in wiring methods during construction adjustments and other scenarios, adapting to the complexity of actual installation and usage scenarios.

The utility model relates to the technical field of energy metering, and discloses a novel Bluetooth meter reading device which comprises a main body shell, the exterior of the main body shell is connected with a Bluetooth module through a buckle assembly, an acquisition assembly is arranged in the main body shell, a flow meter is arranged in the main body shell, and a wireless communication module is arranged in the main body shell. A display module is arranged on the front side of the main body shell; and the buckle assembly comprises a square box, the square box is arranged in the square groove of the main body shell, sliding blocks are arranged in the square box in a sliding mode, springs are arranged between the sliding blocks and the inner wall of the square box, and clamping rods are arranged at the bottoms of the sliding blocks. According to the utility model, the buckle assembly and the installation structure enable parts to be connected conveniently and stably, assembly and maintenance are convenient, the parts are still stable under complex working conditions, and faults are reduced; and moreover, the photovoltaic panel is environment-friendly and cost-reducing in energy supply, and the acquisition, display and Bluetooth modules cooperate to realize remote monitoring, so that the energy and meter reading intelligence level is improved.

This invention relates to the technical field of carbon metering modules, and in particular to a high-precision carbon metering module, comprising an energy metering unit, a dynamic carbon emission factor processing unit, a microprocessor and control unit, a carbon metering algorithm module, and a display and output unit. The energy metering unit includes a sampling circuit and a digital filtering submodule. The sampling circuit adopts a multi-channel synchronous sampling architecture. The digital filtering submodule has a built-in harmonic suppression algorithm to suppress harmonic interference under nonlinear loads, ensuring metering accuracy under all operating conditions. The energy metering unit is directly connected to the AC power supply circuit under test, used to collect voltage and current signals in the circuit in real time, calculate and output instantaneous active power and cumulative energy data. It solves the problem from three dimensions: improving the accuracy of front-end energy metering, adapting the core dynamic carbon emission factor, and optimizing the carbon metering algorithm, to achieve real-time, high-precision, and traceable metering of carbon emissions on the electricity consumption side, while improving environmental adaptability and functional expandability.

This application relates to an energy metering box with automatic sealing compensation function, belonging to the field of electrical equipment technology. It includes a box body with a door frame, a door hinged to the front of the box body, and a multi-stage sealing compensation system integrated within the door frame. The multi-stage sealing compensation system includes a sealing execution module and a power control module that work in tandem. The sealing execution module includes a floating pressure plate, a sealing strip, and a pressure plate guide pin, used to form a sealing interface and transmit sealing pressure. The power control module includes a multi-stage stepped wedge slider, a self-locking stop surface, an energy storage drive element, a pressure sensing unit, a trigger limit rod, and a threshold adjustment screw, used to sense changes in sealing pressure and trigger automatic compensation and one-way self-locking. This invention can compensate for the sealing pressure attenuation caused by the aging of the sealing strip in real time, effectively solving the problem of sealing failure in existing outdoor metering boxes, significantly improving the sealing reliability and maintenance-free period of the energy metering box, reducing operation and maintenance costs, and adapting to harsh outdoor operating environments.

The application provides a kind of ultra-low power consumption single-phase meter power-off theft-preventing electric energy metering method and system, comprising: statistical theft-preventing electric monitoring MCU history wake-up duration information, and establish single-phase table connection electric equipment regular power consumption law;According to the history wake-up duration information and the regular power consumption law of electric equipment, set the precision level of theft-preventing electric monitoring;According to the precision level of theft-preventing electric monitoring, intelligent balance analysis between the precision level of theft-preventing electric monitoring and the power consumption of theft-preventing electric monitoring MCU is carried out, and the best wake-up duration information of theft-preventing electric monitoring MCU when stealing behavior occurs is analyzed;According to the best wake-up duration information, the low-power wake-up metering time granularity is intelligently configured, the low-power single-phase meter power-off theft-preventing electric energy metering is carried out, and the theft-preventing electric monitoring MCU is kept stable.