Method and device for monitoring state of electric energy meter, terminal and storage medium

Abstract

The present application relates to the technical field of electric power metering, and especially relates to a kind of electric energy meter state in network monitoring method, device, terminal and storage medium, the electric energy meter state in network monitoring method disclosed by the present application is loaded harmonic through trunk line, harmonic and the waveform of the current of trunk line and branch line line have obvious difference, by opening the band-stop filter in each branch line line, so that the harmonic current of trunk line only passes through the electric energy meter for detection, then by comparing the data of the electric energy meter to be detected with the data of total meter, whether the electric energy meter to be detected meets the precision requirement can be obtained, therefore, after applying the method of the present application, the electric energy meter can be completed online detection without disassembly, equipment resources and human resources are saved, and the reliable operation and measurement accuracy of the electric energy meter are also guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electric power metering, and in particular to an electric energy meter state on-grid monitoring method and device, a terminal and a storage medium. BACKGROUND

[0002] An electric energy meter is an instrument for measuring electric energy, also known as an electric meter, a fire meter or a kilowatt-hour meter, which refers to an instrument for measuring various electrical quantities.

[0003] An electric energy meter should be periodically calibrated, and the electric energy meters at some key nodes also need to be replaced on time to avoid inaccurate metering data due to aging, which causes losses to power supply enterprises or users.

[0004] In order to ensure that the electric energy meter is in normal operation, avoid waste of manpower and resources caused by "replacement on time", and select the operation and maintenance method of the electric power metering device, a good operation and maintenance strategy can reduce the waste of resources and promote the sustainable development of energy.

[0005] Therefore, it is necessary to develop an electric energy meter state on-grid monitoring method. SUMMARY

[0006] The embodiments of the present application provide an electric energy meter state on-grid monitoring method, device, terminal and storage medium, which are used to solve the problem of resource waste caused by replacement on time in the prior art.

[0007] In a first aspect, the embodiments of the present application provide an electric energy meter state on-grid monitoring method, comprising:

[0008] selecting a to-be-tested electric energy meter from each electric energy meter, wherein the electric energy meter is an electric energy meter of a branch line, and the branch line is a line connected to a trunk line;

[0009] turning on a band-stop filter of each electric energy meter except the to-be-tested electric energy meter, wherein the band-stop filter is used to prevent harmonic current from flowing through the electric energy meter;

[0010] loading a harmonic to the trunk line;

[0011] acquiring metering data of a total meter and metering data of the to-be-tested electric energy meter, respectively, wherein the total meter is an electric energy meter of the trunk line, and the metering data includes power consumption data of the same number of times as the harmonic;

[0012] determining whether the to-be-tested electric energy meter is abnormal according to the metering data of the total meter, the metering data of the to-be-tested electric energy meter and a preset condition.

[0013] In a possible implementation manner, the selecting a to-be-tested electric energy meter from each electric energy meter comprises:

[0014] acquire an identity of each of the electric energy meters;

[0015] acquire a profile of each of the electric energy meters according to the identity;

[0016] select the to-be-inspected electric energy meter according to the profile of each of the electric energy meters.

[0017] In a possible implementation, the harmonic frequency is a non-integer multiple of the mains voltage frequency, and the harmonic current randomly varies.

[0018] In a possible implementation, the acquiring the metering data of the total meter and the metering data of the to-be-inspected electric energy meter respectively includes:

[0019] acquiring a current time, a data collection start time, and a data collection duration;

[0020] calibrating the clock of the total meter and the to-be-inspected electric energy meter according to the current time;

[0021] acquiring the metering data of the total meter and the metering data of the to-be-inspected electric energy meter respectively according to the data collection start time and the data collection duration.

[0022] In a possible implementation, the metering accuracy of the total meter and the metering accuracy of the to-be-inspected electric energy meter are acquired.

[0023] determining the preset condition according to the metering accuracy of the total meter and the metering accuracy of the to-be-inspected electric energy meter.

[0024] In a possible implementation, after the determining whether the to-be-inspected electric energy meter is abnormal according to the metering data of the total meter and the metering data of the to-be-inspected electric energy meter, the method further includes:

[0025] storing the metering data of the total meter and the metering data of the to-be-inspected electric energy meter into the profile of the to-be-inspected electric energy meter.

[0026] In a second aspect, an embodiment of the present application provides an electric energy meter state on-grid monitoring, including:

[0027] a to-be-inspected meter selection module, configured to select a to-be-inspected electric energy meter from each of the electric energy meters, wherein the electric energy meters are electric energy meters of branch lines, and the branch lines are lines connected with a main line;

[0028] a band-stop filter opening module, configured to open a band-stop filter of each of the electric energy meters except the to-be-inspected electric energy meter, wherein the band-stop filter is used to prevent a harmonic current from flowing through the electric energy meter;

[0029] a harmonic loading module, configured to load a harmonic to the main line.

[0030] a data acquisition module configured to acquire metering data of a total meter and metering data of the to-be-inspected meter, wherein the total meter is a meter of the main line, and the metering data comprises power consumption data of the same order of harmonics; and

[0031] a conclusion issuing module configured to determine whether the to-be-inspected meter is abnormal according to the metering data of the total meter, the metering data of the to-be-inspected meter, and a preset condition.

[0032] In a third aspect, an embodiment of the present application provides an in-network electric meter state monitoring terminal, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method according to the first aspect or any possible implementation manner of the first aspect.

[0033] In a fourth aspect, the in-network electric meter state monitoring terminal according to the third aspect further comprises a harmonic generator and a band-stop filter, and the harmonic generator is connected to the in-network electric meter state monitoring terminal.

[0034] The harmonic generator is configured to load harmonic current to the main line according to the signal output by the in-network electric meter state monitoring terminal.

[0035] The band-stop filter is provided with an input end, an output end, and a control end, the input end is connected to the main line, the output end is configured to connect to the current input end of the electric meter, and the control end is configured to start or stop filtering of the current of the input end according to an on-off signal, and the in-network electric meter state monitoring terminal or the electric meter outputs the on-off signal.

[0036] In a fifth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the computer program is executable by a processor to implement the steps of the method according to the first aspect or any possible implementation manner of the first aspect.

[0037] Compared with the prior art, the embodiment of the present application has the following beneficial effects:

[0038] The electric energy meter state on-line monitoring method provided by the embodiment of the present application has obvious differences between the harmonic current of the main line and the current waveforms of the branch lines, the harmonic current of the main line only passes through the band detection electric energy meter by opening the band-stop filter in each branch line, and then the data of the to-be-detected electric energy meter state on-line monitoring and the data of the total meter are compared, so that it can be known whether the to-be-detected electric energy meter meets the precision requirement, therefore, after the method is applied, the electric energy meter can be detected on-line without disassembly, equipment resources and human resources are saved, and the reliable operation and the measurement precision of the electric energy meter are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0040] Figure 1 is a flow chart of the electric energy meter state on-line monitoring method provided by the embodiment of the present application;

[0041] Figure 2 is a function block diagram of the electric energy meter state on-line monitoring device provided by the embodiment of the present application;

[0042] Figure 3 is a function block diagram of the electric energy meter state on-line monitoring terminal provided by the embodiment of the present application;

[0043] Figure 4 is a function block diagram of the electric energy meter state on-line monitoring system provided by the embodiment of the present application. DETAILED DESCRIPTION

[0044] In the following description, specific details are set forth in order to provide a thorough understanding of the embodiments of the present application, but the present application can be practiced without these specific details. In other instances, well-known systems, methods, procedures, components, and circuits have not been described in detail so as not to unnecessarily obscure aspects of the present application.

[0045] In order to make the objectives, technical solutions, and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the drawings.

[0046] The embodiments of the present application will be described in detail below, the present example is implemented on the premise of the technical solutions of the present application, and detailed embodiments and specific operation processes are given, but the protection scope of the present application is not limited to the following embodiments.

[0047] Figure 1 The flow chart of the power meter state on-line monitoring method provided by the embodiment of the present application.

[0048] As shown in Figure 1 The implementation flow chart of the power meter state on-line monitoring method provided by the embodiment of the present application is shown, and the details are as follows:

[0049] In step 101, a to-be-inspected power meter is selected from each power meter, wherein the power meter is a power meter of a branch line, and the branch line is a line connected with a trunk line.

[0050] In some embodiments, the step 101 comprises:

[0051] The identification of each power meter is obtained.

[0052] The profile of each power meter is obtained according to each identification.

[0053] The to-be-inspected power meter is selected according to the profile of each power meter.

[0054] Exemplarily, each power meter in a power supply line should be inspected periodically, and the period is usually one year. The profiles of the power meters of each branch line in the power supply line are queried, and the power meters that are about to expire can be known, and the power meters that are about to expire are determined as the to-be-inspected power meters.

[0055] In some cases, the line loss is abnormal, and generally, the reason for the line loss abnormality is that the power meter of the branch line is out of line metering deviation. At this time, the power meters that are more suspicious can be analyzed through the profile, such as the power meters that have been repaired and replaced are found through the profile as the to-be-inspected power meters, and therefore, the profile provides necessary basis for quickly locating the faulty power meter.

[0056] In step 102, a band-stop filter of each power meter except the to-be-inspected power meter is turned on, wherein the band-stop filter is used to prevent the harmonic current from flowing through the power meter.

[0057] Exemplarily, the band-stop filter is adapted to the loaded harmonic, such as the loaded harmonic frequency is k, and the corresponding band-stop filter can prevent the harmonic with the frequency of k from passing through, so that the harmonic current passes through the power meter with the turned-on band-stop filter, that is, the to-be-inspected power meter.

[0058] In step 103, a harmonic is loaded to the trunk line.

[0059] In some embodiments, the harmonic frequency is a non-integer multiple of the trunk line voltage frequency, and the current of the harmonic randomly changes.

[0060] Exemplarily, as we know, the current frequency of the trunk line has a fundamental wave of voltage frequency, and high-order harmonics are integer multiples of the trunk current frequency, so the loaded harmonics are obviously different from the current of the trunk line and branch line, so that the loaded harmonics have obvious characteristics, and the band-stop filter can be targetedly filtered, and the data analysis system can achieve the purpose of rapid identification.

[0061] In step 104, the metering data of the total meter and the metering data of the to-be-inspected electric energy meter are respectively acquired, wherein the total meter is an electric energy meter of the trunk line, and the metering data includes power consumption data of the same order of harmonics.

[0062] In some embodiments, step 104 includes:

[0063] The current time, the data acquisition start time and the data acquisition duration are acquired.

[0064] The clocks of the total meter and the to-be-inspected electric energy meter are calibrated according to the current time.

[0065] The metering data of the total meter and the metering data of the to-be-inspected electric energy meter are respectively acquired according to the data acquisition start time and the data acquisition duration.

[0066] Exemplarily, for the total meter and the branch meter, a band-pass filter is arranged, the harmonic signal of the same frequency as the aforementioned loaded harmonic signal is acquired through the band-pass filter, and the voltage of the harmonic, the harmonic current, the active power of the harmonic, the electric energy consumption of the harmonic in a period of time and the like data can be obtained through signal analysis, and by comparing the above data, whether the to-be-inspected electric energy meter meets the accuracy requirement can be known.

[0067] In step 105, whether the to-be-inspected electric energy meter is abnormal is determined according to the metering data of the total meter, the metering data of the to-be-inspected electric energy meter and a preset condition.

[0068] In some possible implementation embodiments, in step 105, the metering accuracy of the total meter and the metering accuracy of the to-be-inspected electric energy meter are acquired.

[0069] The preset condition is determined according to the metering accuracy of the total meter and the metering accuracy of the to-be-inspected electric energy meter.

[0070] In some possible implementation embodiments, step 106 is further included:

[0071] The metering data of the total meter and the metering data of the to-be-inspected electric energy meter are stored into the archive of the to-be-inspected electric energy meter.

[0072] The embodiment of the method for monitoring the state of an electric energy meter in a network loads a harmonic wave on a trunk line, the harmonic wave is obviously different from the waveforms of the current of the trunk line and branch line, the band-stop filter in each branch line is opened, so that the harmonic current of the trunk line only passes through the electric energy meter for detection, and then the data of the electric energy meter for detection in the network is compared with the data of the total meter, so that whether the electric energy meter for detection meets the precision requirement is known.

[0073] It should be understood that the size of the serial number of each step in the above embodiment does not mean the order of execution, and the execution order of each process should be determined according to its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0074] The following is the device embodiment of the present application, and for details not described in detail, reference can be made to the corresponding method embodiments described above.

[0075] Figure 2 is the functional block diagram of the electric energy meter state in network monitoring device provided by the embodiment of the present application, referring to Figure 2 , the electric energy meter state in network monitoring device 2 includes: a meter for detection selection module, a band-stop filter opening module, a harmonic loading module, a data acquisition module and a conclusion issuing module.

[0076] The meter for detection selection module is used for selecting a meter for detection from each electric energy meter, wherein the electric energy meter is an electric energy meter of a branch line, and the branch line is a line connected with a trunk line.

[0077] The band-stop filter opening module is used for opening the band-stop filter of each electric energy meter except the meter for detection, wherein the band-stop filter is used for preventing the harmonic current from flowing through the electric energy meter.

[0078] The harmonic loading module is used for loading a harmonic wave on the trunk line.

[0079] The data acquisition module is used for respectively acquiring the metering data of a total meter and the metering data of the meter for detection, wherein the total meter is an electric energy meter of the trunk line, and the metering data includes the power consumption data of the same number of times as the harmonic wave.

[0080] The conclusion issuing module is used for determining whether the meter for detection is abnormal according to the metering data of the total meter, the metering data of the meter for detection and a preset condition.

[0081] Figure 3 is the functional block diagram of the electric energy meter state in network monitoring terminal provided by the embodiment of the present application. As Figure 3As shown, the terminal 3 of the embodiment comprises a processor 300, a memory 301, and a computer program 302 stored in the memory 301 and executable on the processor 300. The processor 300 implements the steps in the power meter state monitoring method and the embodiments when executing the computer program 302, for example Figure 1 The steps 101 to 105 are shown.

[0082] For example, the computer program 302 can be divided into one or more modules / units, which are stored in the memory 301 and executed by the processor 300 to complete the present application.

[0083] The terminal 3 can be a desktop computer, a notebook computer, a palm computer, a cloud server, and the like. The terminal 3 can include, but is not limited to, the processor 300 and the memory 301. Those skilled in the art can understand that Figure 3 The terminal 3 is only an example and does not constitute a limitation on the terminal 3, which can include more or fewer components than shown, or combine certain components, or different components, for example, the terminal can also include an input / output device, a network access device, a bus, and the like.

[0084] The processor 300 can be a central processing unit (CPU), and can also be other general-purpose processors, digital signal processors (DSP), application specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and the like. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor.

[0085] The memory 301 can be an internal storage unit of the terminal 3, such as a hard disk or a memory of the terminal 3. The memory 301 can also be an external storage device of the terminal 3, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, and the like equipped on the terminal 3. Further, the memory 301 can also include both the internal storage unit and the external storage device of the terminal 3. The memory 301 is used to store the computer program and other programs and data required by the terminal. The memory 301 can also be used to temporarily store data that has been output or is to be output.

[0086] It can be clearly understood by those skilled in the art that, for the convenience and brevity of description, only the division of the above functional units and modules is taken as an example for description, and in actual application, the above functions can be completed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiments can be integrated in one processing unit, or each unit can exist physically independently, or two or more units can be integrated in one unit, and the integrated unit can be realized in the form of hardware or in the form of software functional unit. In addition, the specific names of the functional units and modules are only for the convenience of mutual distinction, and do not limit the protection scope of the present application. The specific working process of the units and modules in the system can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0087] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can refer to the relevant description of other embodiments.

[0088] Those of ordinary skill in the art can appreciate that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized in electronic hardware or in a combination of computer software and electronic hardware. Whether the functions are executed in hardware or software depends on the specific application and design constraints of the technical solution. A person skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0089] In the embodiments of the present application, it should be understood that the disclosed apparatus / terminal and method can be implemented in other manners. For example, the apparatus / terminal embodiments described above are merely schematic, and the division of the modules or units is merely logical function division, and there can be another division manner in actual implementation. For example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some interfaces, devices or units, and can be electric, mechanical or in other forms.

[0090] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiments.

[0091] In addition, each functional unit in the various embodiments of the present application can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit. The integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

[0092] The integrated module / unit, if realized in the form of a software function unit and sold or used as an independent product, can be stored in a computer-readable storage medium. Based on such understanding, all or part of the processes in the above-mentioned embodiments can also be completed by a computer program instructing related hardware, and the computer program can be stored in a computer-readable storage medium. The computer program can implement the steps of the above-mentioned various power meter state on-grid monitoring method and power meter state on-grid monitoring device embodiments when executed by a processor. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or some intermediate forms, etc. The computer-readable medium can include any entity or device capable of carrying the computer program code, recording medium, U disk, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium, etc. It should be noted that the contents included in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable medium does not include electrical carrier signals and telecommunication signals.

[0093] Figure 4 is a functional block diagram of the power meter state on-grid monitoring system provided by the embodiments of the present application.

[0094] Reference Figure 4 will be described in detail. A power meter state on-grid monitoring system includes a power meter state on-grid monitoring terminal 3 as described above, and further includes a harmonic generator 401 and a band-stop filter 402. The harmonic generator 401 is in signal connection with the power meter state on-grid monitoring terminal 3.

[0095] The harmonic generator 401 is configured to load harmonic current to the main line according to the signal output by the power meter state on-grid monitoring terminal 3.

[0096] The band-stop filter 402 is provided with an input end, an output end, and a control end. The input end is connected with the main line. The output end is configured to connect the current input end of the power meter. The control end is configured to start or stop filtering of the current at the input end according to an on-off signal. The power meter state on-grid monitoring terminal 3 or the power meter outputs the on-off signal.

[0097] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent replacements; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A method for monitoring the state of an electric energy meter on a network, characterized in that, The method comprises the following steps: selecting a to-be-inspected electric energy meter from each electric energy meter, wherein the electric energy meter is an electric energy meter of a branch line, and the branch line is a line connected with a trunk line; turning on a band-stop filter of each electric energy meter except the to-be-inspected electric energy meter, wherein the band-stop filter is used to prevent harmonic current from flowing through the electric energy meter; loading a harmonic to the trunk line; obtaining metering data of a total meter and metering data of the to-be-inspected electric energy meter respectively, wherein the total meter is an electric energy meter of the trunk line, and the metering data comprises power consumption data of the same frequency as the harmonic; and determining whether the to-be-inspected electric energy meter is abnormal according to the metering data of the total meter, the metering data of the to-be-inspected electric energy meter and a preset condition. The harmonic frequency is a non-integer multiple of the voltage frequency of the trunk line, and the harmonic current randomly changes.

2. The method of claim 1, wherein the method further comprises: The selecting a to-be-inspected electric energy meter from each electric energy meter comprises the following steps: obtaining an identifier of each electric energy meter; obtaining an archive of each electric energy meter according to each identifier; selecting the to-be-inspected electric energy meter according to the archive of each electric energy meter.

3. The method of claim 1, wherein the method further comprises: The obtaining metering data of a total meter and metering data of the to-be-inspected electric energy meter respectively comprises the following steps: obtaining a current time, a data collection start time and a data collection duration; calibrating a clock of the total meter and the to-be-inspected electric energy meter according to the current time; obtaining metering data of a total meter and metering data of the to-be-inspected electric energy meter respectively according to the data collection start time and the data collection duration.

4. The method of claim 1, wherein the method further comprises: The method comprises the following steps: obtaining metering precision of the total meter and metering precision of the to-be-inspected electric energy meter; determining the preset condition according to the metering precision of the total meter and the metering precision of the to-be-inspected electric energy meter.

5. The method of monitoring the status of an electric energy meter over a network according to any one of claims 1 to 4, characterized in that, After determining whether the to-be-inspected electric energy meter is abnormal according to the metering data of the total meter and the metering data of the to-be-inspected electric energy meter, the method comprises the following step: storing the metering data of the total meter and the metering data of the to-be-inspected electric energy meter into the archive of the to-be-inspected electric energy meter.

6. An apparatus for monitoring the state of an electric energy meter over a network, characterized by The device for implementing the method for monitoring the state of an electric energy meter on a network as claimed in any one of claims 1 to 5 comprises: a to-be-inspected meter selection module, configured to select a to-be-inspected electric energy meter from each electric energy meter, wherein the electric energy meter is an electric energy meter of a branch line, and the branch line is a line connected with a trunk line; a band-stop filter turning-on module, configured to turn on a band-stop filter of each electric energy meter except the to-be-inspected electric energy meter, wherein the band-stop filter is used to prevent harmonic current from flowing through the electric energy meter; a harmonic loading module, configured to load a harmonic to the trunk line; a data obtaining module, configured to obtain metering data of a total meter and metering data of the to-be-inspected electric energy meter respectively, wherein the total meter is an electric energy meter of the trunk line, and the metering data comprises power consumption data of the same frequency as the harmonic; and a conclusion issuing module, configured to determine whether the to-be-inspected electric energy meter is abnormal according to the metering data of the total meter, the metering data of the to-be-inspected electric energy meter and a preset condition.

7. An in-network monitoring terminal for the state of an electric energy meter, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor executes the computer program to implement the steps of the method as claimed in any one of claims 1 to 5.

8. An on-grid monitoring system for the state of an electric energy meter, characterized in that, The electric energy meter state on-grid monitoring terminal as claimed in claim 7 further comprises a harmonic generator and a band-stop filter, the harmonic generator being in signal connection with the electric energy meter state on-grid monitoring terminal; the harmonic generator is configured to load harmonic current to the main line according to the signal output by the electric energy meter state on-grid monitoring terminal; the band-stop filter is provided with an input end, an output end and a control end, the input end being connected with the main line, the output end being configured to connect the current input end of the electric energy meter, and the control end being configured to start or stop filtering of the current at the input end according to an on-off signal, the electric energy meter state on-grid monitoring terminal or the electric energy meter outputting the on-off signal.

9. A computer-readable storage medium storing a computer program, the computer program comprising instructions that, when executed by a computer, cause the computer to perform the method of any one of claims 1 to 8. The computer program, when executed by a processor, implements the steps of the method of any one of claims 1 to 5.

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