CN114636963A - Electric energy meter state on-line monitoring method and device, terminal and storage medium - Google Patents
Electric energy meter state on-line monitoring method and device, terminal and storage medium Download PDFInfo
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- CN114636963A CN114636963A CN202111518294.3A CN202111518294A CN114636963A CN 114636963 A CN114636963 A CN 114636963A CN 202111518294 A CN202111518294 A CN 202111518294A CN 114636963 A CN114636963 A CN 114636963A
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Abstract
The invention relates to the technical field of electric power metering, in particular to an electric energy meter state on-line monitoring method, a device, a terminal and a storage medium.
Description
Technical Field
The invention relates to the technical field of electric power metering, in particular to an on-line monitoring method, device, terminal and storage medium for states of an electric energy meter.
Background
An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, gas meter, kilowatt-hour meter, and refers to an instrument for measuring various electric quantities.
The electric energy meters should be checked regularly, and the electric energy meters of some key nodes need to be rotated due to expiration so as to avoid the problem that metering data is inaccurate after aging and loss is brought to power supply enterprises or users.
In order to avoid waste of products and manpower caused by 'due rotation' on the premise of ensuring normal operation of the electric energy meter, the method is very important for selecting an operation and maintenance method of the electric power metering equipment. The good operation and maintenance strategy can reduce the waste of resources and promote the sustainable development of energy.
Based on the above, it is necessary to develop and design an on-grid monitoring method for the state of the electric energy meter.
Disclosure of Invention
The embodiment of the invention provides an on-line monitoring method, device, terminal and storage medium for states of an electric energy meter, which are used for solving the problem that due rotation is adopted in the prior art, so that resource waste is easily caused.
In a first aspect, an embodiment of the present invention provides an on-grid monitoring method for states of an electric energy meter, including:
selecting electric energy meters to be detected from the electric energy meters, wherein the electric energy meters are branch line electric energy meters, and the branch line is a line connected with a trunk line;
turning on band elimination filters of the electric energy meters except the electric energy meter to be detected, wherein the band elimination filters are used for preventing harmonic current from flowing through the electric energy meters;
loading harmonics to the main line;
respectively acquiring metering data of a general meter and metering data of the electric energy meter to be detected, wherein the general meter is the electric energy meter of the trunk line, and the metering data comprises electricity utilization data with the same frequency as harmonic waves;
and determining whether the electric energy meter to be detected is abnormal or not according to the metering data of the general meter, the metering data of the electric energy meter to be detected and a preset condition.
In a possible implementation manner, the selecting the electric energy meter to be checked from the electric energy meters includes:
acquiring the identification of each electric energy meter;
acquiring a file of each electric energy meter according to each identifier;
and selecting the electric energy meter to be detected according to the archives of the electric energy meters.
In one possible implementation, the harmonic frequency is a non-integer multiple of the mains voltage frequency, and the current of the harmonic varies randomly.
In a possible implementation manner, the respectively obtaining the metering data of the summary meter and the metering data of the electric energy meter to be checked includes:
acquiring current time, data acquisition starting time and data acquisition duration;
calibrating the clock of the general meter and the electric energy meter to be detected according to the current time;
and acquiring metering data of a general meter and metering data of the electric energy meter to be detected according to the data acquisition starting time and the data acquisition duration.
In a possible implementation mode, acquiring the metering precision of the general meter and the metering precision of the electric energy meter to be detected;
and determining the preset condition according to the metering precision of the general meter and the metering precision of the electric energy meter to be detected.
In a possible implementation manner, after determining whether the electric energy meter to be checked is abnormal according to the metering data of the general meter and the metering data of the electric energy meter to be checked, the method includes:
and storing the metering data of the general meter and the metering data of the electric energy meter to be detected into the file of the electric energy meter to be detected.
In a second aspect, an embodiment of the present invention provides an on-grid monitoring method for status of an electric energy meter, including:
the system comprises a to-be-detected meter selection module, a to-be-detected meter selection module and a to-be-detected meter selection module, wherein the to-be-detected meter selection module is used for selecting the to-be-detected meters from the electric meters, the electric meters are branch line electric meters, and the branch line is a line connected with a trunk line;
the band-stop filter starting module is used for starting band-stop filters of all the electric energy meters except the electric energy meter to be detected, wherein the band-stop filters are used for preventing harmonic current from flowing through the electric energy meters;
the harmonic loading module is used for loading harmonic to the trunk line;
the data acquisition module is used for respectively acquiring metering data of a general meter and metering data of the electric energy meter to be detected, wherein the general meter is the electric energy meter of the trunk line, and the metering data comprises electricity utilization data with the same frequency as harmonic waves; and the number of the first and second groups,
and the conclusion issuing module is used for determining whether the electric energy meter to be detected is abnormal or not according to the metering data of the general meter, the metering data of the electric energy meter to be detected and preset conditions.
In a third aspect, an embodiment of the present invention provides an electric energy meter state on-grid monitoring terminal, including a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the method according to the first aspect or any possible implementation manner of the first aspect when executing the computer program.
A fourth aspect includes the electric energy meter state on-grid monitoring terminal according to the third aspect, further including: the harmonic generator is in signal connection with the electric energy meter state on-grid monitoring terminal;
the harmonic generator is used for loading harmonic current to the trunk line according to a signal output by the electric energy meter state on a network monitoring terminal;
the band elimination filter is provided with: the input end is connected with the trunk line, the output end is used for being connected with a current input end of the electric energy meter, the control end is used for starting or stopping filtering of current of the input end according to the switching signal, and the state of the electric energy meter outputs the switching signal at a network monitoring terminal or the electric energy meter.
In a fifth aspect, the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the steps of the method according to the first aspect or any one of the possible implementation manners of the first aspect.
Compared with the prior art, the implementation mode of the invention has the following beneficial effects:
the embodiment of the invention discloses an on-line monitoring method for the state of an electric energy meter, which is characterized in that harmonic waves are loaded on a trunk line, the harmonic waves are obviously different from the current waveforms of the trunk line and branch lines, the harmonic wave current of the trunk line is only detected by a band by starting a band-stop filter in each branch line, and whether the electric energy meter to be detected meets the precision requirement can be known by comparing the data monitored by the on-line monitoring method for the state of the electric energy meter to be detected with the data of a general meter.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a flowchart of a method for monitoring states of an electric energy meter on a grid according to an embodiment of the present invention;
FIG. 2 is a functional block diagram of an on-grid monitoring device for the state of an electric energy meter provided by the embodiment of the invention;
FIG. 3 is a functional block diagram of a power meter state on-grid monitoring terminal provided by the embodiment of the invention;
fig. 4 is a functional block diagram of an on-grid monitoring system for the state of an electric energy meter according to an embodiment of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
To make the objects, technical solutions and advantages of the present invention more apparent, the following description is given by way of embodiments with reference to the accompanying drawings.
The following is a detailed description of the embodiments of the present invention, which is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Fig. 1 is a flowchart of a method for monitoring states of an electric energy meter on a grid according to an embodiment of the present invention.
As shown in fig. 1, it shows a flowchart of an implementation of a method for monitoring states of an electric energy meter on a grid according to an embodiment of the present invention, which is detailed as follows:
in step 101, electric energy meters to be tested are selected from the electric energy meters, wherein the electric energy meters are branch line electric energy meters, and the branch line is a line connected with a trunk line.
In some embodiments, the step 101 comprises:
and acquiring the identifier of each electric energy meter.
And acquiring the file of each electric energy meter according to each identification.
And selecting the electric energy meter to be detected according to the archives of the electric energy meters.
Illustratively, for each energy meter in the power supply line, it should be detected regularly, usually with a specified period of one year. And inquiring the electric energy meter files of each branch line in the power supply line to obtain the temporary electric energy meter, wherein the temporary electric energy meter is determined as the electric energy meter to be detected.
In some cases, the line loss is abnormal, generally speaking, the reason of the line loss is the deviation of the electric energy meter outlet metering of the branch line, at this time, the suspected electric energy meter can be analyzed through the file, for example, the electric energy meter which is maintained and replaced once is searched through the file to be used as the electric energy meter to be detected, so that the file is used for supporting, and necessary basis is provided for rapidly positioning the electric energy meter with the fault. .
In step 102, a band-stop filter of each electric energy meter except the electric energy meter to be detected is turned on, wherein the band-stop filter is used for preventing harmonic current from flowing through the electric energy meter.
Illustratively, the band-stop filter is adapted to the loaded harmonic, for example, the loaded harmonic has a frequency k, and the corresponding band-stop filter can prevent the harmonic having the frequency k from passing through, so that the harmonic current can completely pass through the electric energy meter for turning on the band-stop filter, that is, the electric energy meter to be detected.
In step 103, harmonics are loaded to the mains.
In some embodiments, the harmonic frequency is a non-integer multiple of the mains voltage frequency, the current of the harmonic varying randomly.
Illustratively, as known, the fundamental wave of the current frequency of a trunk line is the voltage frequency, and the higher harmonic is an integral multiple of the current frequency of the trunk line, so that the loaded harmonic is obviously different from the currents of the trunk line and the branch line, the loaded harmonic has obvious characteristics, the band-stop filter can carry out targeted filtering, and the aim of quick identification can be achieved for a data analysis system.
In step 104, metering data of a summary meter and metering data of the electric energy meter to be detected are respectively obtained, wherein the summary meter is the electric energy meter of the trunk line, and the metering data comprises electricity utilization data with the same frequency as the harmonic waves.
In some embodiments, step 104 comprises:
and acquiring the current time, the data acquisition starting time and the data acquisition duration.
And calibrating the clock of the general meter and the electric energy meter to be detected according to the current time.
And acquiring metering data of a general meter and metering data of the electric energy meter to be detected according to the data acquisition starting time and the data acquisition duration.
Illustratively, the general meter and the sub-meter are both provided with band-pass filters, harmonic signals with the same frequency as the loaded harmonic signals are obtained through the band-pass filters, data such as voltage of the harmonic, harmonic current, active power of the harmonic, electric energy consumption of the harmonic within a period of time and the like can be obtained through signal analysis, and whether the electric energy meter to be detected meets the precision requirement can be obtained through comparison of the data.
In step 105, determining whether the electric energy meter to be detected is abnormal according to the metering data of the general meter, the metering data of the electric energy meter to be detected and preset conditions.
In some possible implementation embodiments, in step 105, the metering accuracy of the total meter and the metering accuracy of the electric energy meter to be checked are obtained.
And determining the preset condition according to the metering precision of the general meter and the metering precision of the electric energy meter to be detected.
In some possible implementation embodiments, the method further includes step 106:
and storing the metering data of the general meter and the metering data of the electric energy meter to be detected into the file of the electric energy meter to be detected.
The embodiment of the electric energy meter state on-line monitoring method loads harmonic waves on a main line, the harmonic waves are obviously different from the current waveforms of the main line and branch lines, the harmonic wave current of the main line can only pass through a band detection electric energy meter by starting a band elimination filter in each branch line, and whether the electric energy meter to be detected meets the precision requirement can be obtained by comparing the data of the electric energy meter state on-line monitoring with the data of a master meter.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply any order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.
The following are embodiments of the apparatus of the invention, and for details not described in detail therein, reference may be made to the corresponding method embodiments described above.
Fig. 2 is a functional block diagram of an electric energy meter state on-grid monitoring device according to an embodiment of the present invention, and referring to fig. 2, the electric energy meter state on-grid monitoring device 2 includes: the device comprises a table to be checked selecting module, a band elimination filter starting module, a harmonic loading module, a data obtaining module and a conclusion issuing module.
The electric energy meter to be detected is selected from the electric energy meters, wherein the electric energy meters are branch line electric energy meters, and the branch line is a line connected with a trunk line.
And the band elimination filter starting module is used for starting the band elimination filters of the electric energy meters except the electric energy meter to be detected, wherein the band elimination filters are used for preventing harmonic current from flowing through the electric energy meters.
And the harmonic loading module is used for loading the harmonic to the main line.
And the data acquisition module is used for respectively acquiring the metering data of a general meter and the metering data of the electric energy meter to be detected, wherein the general meter is the electric energy meter of the trunk line, and the metering data comprises the electricity utilization data with the same frequency as the harmonic wave.
And the conclusion issuing module is used for determining whether the electric energy meter to be detected is abnormal or not according to the metering data of the general meter, the metering data of the electric energy meter to be detected and preset conditions.
Fig. 3 is a functional block diagram of an on-grid monitoring terminal for the state of an electric energy meter according to an embodiment of the present invention. As shown in fig. 3, the terminal 3 of this embodiment includes: a processor 300, a memory 301 and a computer program 302 stored in said memory 301 and executable on said processor 300. The processor 300, when executing the computer program 302, implements the above-mentioned steps of the grid monitoring method and embodiment of the status of each electric energy meter, such as the steps 101 to 105 shown in fig. 1.
Illustratively, the computer program 302 may be partitioned into one or more modules/units that are stored in the memory 301 and executed by the processor 300 to implement the present invention.
The terminal 3 may be a desktop computer, a notebook, a palm computer, a cloud server, or other computing devices. The terminal 3 may include, but is not limited to, a processor 300, a memory 301. It will be appreciated by those skilled in the art that fig. 3 is only an example of a terminal 3 and does not constitute a limitation of the terminal 3 and may comprise more or less components than those shown, or some components may be combined, or different components, e.g. the terminal may further comprise input output devices, network access devices, buses, etc.
The Processor 300 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 301 may be an internal storage unit of the terminal 3, such as a hard disk or a memory of the terminal 3. The memory 301 may 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 memory Card (Flash Card) and the like provided on the terminal 3. Further, the memory 301 may also include both an internal storage unit and an external storage device of the terminal 3. The memory 301 is used for storing the computer program and other programs and data required by the terminal. The memory 301 may also be used to temporarily store data that has been output or is to be output.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed 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 perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit, and the integrated unit may be implemented in a form of hardware, or may be implemented in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the above embodiments, the description of each embodiment is focused on, and for parts that are not described or illustrated in detail in a certain embodiment, reference may be made to the description of other embodiments.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus/terminal and method may be implemented in other manners. For example, the above-described apparatus/terminal embodiments are merely illustrative, and for example, the division of the modules or units is only one logical division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method according to the above embodiment may be implemented by a computer program, which may be stored in a computer readable storage medium, and when the computer program is executed by a processor, the steps of the method for monitoring the state of the electric energy meter on the grid and the method for monitoring the state of the electric energy meter on the grid may be implemented. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
Fig. 4 is a functional block diagram of an on-grid monitoring system for the state of an electric energy meter according to an embodiment of the present invention.
Referring to fig. 4 for details, a power meter state on-grid monitoring system includes the power meter state on-grid monitoring terminal 3 as described above, and further includes: the harmonic generator 401 is in signal connection with the electric energy meter state on-grid monitoring terminal 3;
the harmonic generator 401 is configured to load a harmonic current to the main line according to a signal output by the electric energy meter at the grid monitoring terminal 3;
the band-stop filter 402 is provided with: the input end is connected with the trunk line, the output end is used for being connected with a current input end of the electric energy meter, the control end is used for starting or stopping filtering of current of the input end according to the switching signal, and the state of the electric energy meter outputs the switching signal at the network monitoring terminal 3 or the electric energy meter.
The above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A method for monitoring the state of an electric energy meter on the network is characterized by comprising the following steps:
selecting electric energy meters to be detected from the electric energy meters, wherein the electric energy meters are branch line electric energy meters, and the branch line is a line connected with a trunk line;
turning on band elimination filters of the electric energy meters except the electric energy meter to be detected, wherein the band elimination filters are used for preventing harmonic current from flowing through the electric energy meters;
loading harmonics to the main line;
respectively acquiring metering data of a general meter and metering data of the electric energy meter to be detected, wherein the general meter is the electric energy meter of the trunk line, and the metering data comprises electricity utilization data with the same frequency as harmonic waves;
and determining whether the electric energy meter to be detected is abnormal or not according to the metering data of the general meter, the metering data of the electric energy meter to be detected and a preset condition.
2. The method for monitoring the state of the electric energy meters on the grid according to claim 1, wherein the step of selecting the electric energy meter to be detected from the electric energy meters comprises the following steps:
acquiring the identification of each electric energy meter;
acquiring a file of each electric energy meter according to each identifier;
and selecting the electric energy meter to be detected according to the archives of the electric energy meters.
3. The method of claim 1, wherein the harmonic frequency is a non-integer multiple of the mains voltage frequency, and the current of the harmonic varies randomly.
4. The method for monitoring the state of the electric energy meter on the grid according to claim 1, wherein the step of respectively acquiring the metering data of the general meter and the metering data of the electric energy meter to be detected comprises the following steps:
acquiring current time, data acquisition starting time and data acquisition duration;
calibrating the clock of the general meter and the electric energy meter to be detected according to the current time;
and acquiring metering data of a general meter and metering data of the electric energy meter to be detected according to the data acquisition starting time and the data acquisition duration.
5. The method for monitoring the state of the electric energy meter on the grid according to claim 1, characterized by comprising the following steps:
acquiring the metering precision of the general meter and the metering precision of the electric energy meter to be detected;
and determining the preset condition according to the metering precision of the general meter and the metering precision of the electric energy meter to be detected.
6. The electric energy meter state on-grid monitoring method as claimed in any one of claims 1 to 5, characterized in that after determining whether the electric energy meter to be detected is abnormal according to the metering data of the general meter and the metering data of the electric energy meter to be detected, the method comprises the following steps:
and storing the metering data of the general meter and the metering data of the electric energy meter to be detected into the file of the electric energy meter to be detected.
7. An electric energy meter state on-grid monitoring device, comprising:
the system comprises a to-be-detected meter selection module, a to-be-detected meter selection module and a to-be-detected meter selection module, wherein the to-be-detected meter selection module is used for selecting to-be-detected electric energy meters from all the electric energy meters, the electric energy meters are branch line electric energy meters, and the branch line is a line connected with a trunk line;
the band-elimination filter starting module is used for starting band-elimination filters of the electric energy meters except the electric energy meter to be detected, wherein the band-elimination filters are used for preventing harmonic current from flowing through the electric energy meters;
the harmonic loading module is used for loading harmonic waves to the trunk line;
the data acquisition module is used for respectively acquiring metering data of a general meter and metering data of the electric energy meter to be detected, wherein the general meter is the electric energy meter of the trunk line, and the metering data comprises electricity utilization data with the same frequency as harmonic waves; and (c) a second step of,
and the conclusion issuing module is used for determining whether the electric energy meter to be detected is abnormal or not according to the metering data of the general meter, the metering data of the electric energy meter to be detected and preset conditions.
8. An electric energy meter condition on-grid monitoring terminal comprising a memory, a processor and a computer program stored in said memory and executable on said processor, wherein said processor when executing said computer program implements the steps of the method according to any of the preceding claims 1 to 6.
9. An electric energy meter state on-grid monitoring system, characterized by comprising the electric energy meter state on-grid monitoring terminal according to claim 8, and further comprising: the harmonic generator is in signal connection with the electric energy meter state on-grid monitoring terminal;
the harmonic generator is used for loading harmonic current to the trunk line according to a signal output by the electric energy meter state on a network monitoring terminal;
the band elimination filter is provided with: the input end is connected with the trunk line, the output end is used for being connected with a current input end of the electric energy meter, the control end is used for starting or stopping filtering of current of the input end according to the switching signal, and the state of the electric energy meter outputs the switching signal at a network monitoring terminal or the electric energy meter.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518294.3A CN114636963A (en) | 2021-12-13 | 2021-12-13 | Electric energy meter state on-line monitoring method and device, terminal and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111518294.3A CN114636963A (en) | 2021-12-13 | 2021-12-13 | Electric energy meter state on-line monitoring method and device, terminal and storage medium |
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| CN114636963A true CN114636963A (en) | 2022-06-17 |
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| CN202111518294.3A Pending CN114636963A (en) | 2021-12-13 | 2021-12-13 | Electric energy meter state on-line monitoring method and device, terminal and storage medium |
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| CN (1) | CN114636963A (en) |
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