CN109407043A - Electric energy meter calibration method, device and equipment - Google Patents
Electric energy meter calibration method, device and equipment Download PDFInfo
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- CN109407043A CN109407043A CN201811653542.3A CN201811653542A CN109407043A CN 109407043 A CN109407043 A CN 109407043A CN 201811653542 A CN201811653542 A CN 201811653542A CN 109407043 A CN109407043 A CN 109407043A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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Abstract
The present invention provides a kind of electric energy meter calibration method, device and equipment, comprising: obtains the initial effective current value of electric energy meter to be calibrated, and initial effective current value is carried out a square calculating, obtain induced current calibration value；Using the operating circuit connecting with electric energy meter to be calibrated, the actually active current value of electric energy meter to be calibrated is obtained；A square calculating is carried out to actually active current value, obtains effective current square value；Effective current square value is subtracted into induced current calibration value, is subtracted each other as a result, obtaining calibration current value to result progress square root calculating is subtracted each other；If calibrating current value is greater than zero, the fundamental current virtual value of electric energy meter to be detected is obtained；Judge whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected；If it is, determining that calibration current value is zero, solves the technical problem of existing electric energy meter calibration inaccuracy, improve the accuracy of the calibration of electric energy meter, improve the Experience Degree of user.
Description
Technical field
The present invention relates to instrument technical fields, more particularly, to a kind of electric energy meter calibration method, device and equipment.
Background technique
For user in the case where not using power device, will often find that will appear display current value on electric energy meter, and this
Current value used in a current value and non-user, but the electric energy meter due to caused by electric energy meter internal interference or alien crosstalk is adopted
Sample is abnormal.
The prior art is that the school to electric energy meter is realized by the offset register of calibration measurement chip in production
Standard, usual electric energy meter have 2 chips, and one is metering chip, and one is main process task chip, and metering chip is responsible for voltage and current and is adopted
Sample, main process task chip are responsible for obtaining data from metering chip and carry out secondary treatment, and processing result, but the place of this mode are obtained
Reason effect is bad, and there are still deviations for the current value and actual current value that the electric energy meter after calibration is shown, therefore, existing electric energy meter school
Quasi- accuracy is lower.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of electric energy meter calibration method, device and equipment, it is existing to solve
The technical problem for having the accuracy of existing electric energy meter calibration present in technology lower.
In a first aspect, the embodiment of the invention provides a kind of electric energy meter calibration methods, comprising: obtain electric energy meter to be calibrated
Initial effective current value, and initial effective current value is subjected to a square calculating, obtain induced current calibration value；Using with it is to be calibrated
The operating circuit of electric energy meter connection, obtains the actually active current value of electric energy meter to be calibrated；Actually active current value is carried out flat
Side calculates, and obtains effective current square value；Effective current square value is subtracted into induced current calibration value, is subtracted each other as a result, right
Subtract each other result and carry out square root calculating, obtains calibration current value；If calibrating current value is greater than zero, electric energy meter to be detected is obtained
Fundamental current virtual value；Judge whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected；If it is, really
Surely calibration current value is zero.
With reference to first aspect, the embodiment of the invention provides the first possible embodiments of first aspect, wherein obtains
Take the initial effective current value of electric energy meter to be calibrated, comprising: provide voltage to electric energy meter to be calibrated using detection device of electric energy meter；
The initial effective current value for the metering chip being arranged in electric energy meter to be calibrated is read by calibration tool, and will be initially effectively electric
Initial effective current value of the flow valuve as electric energy meter to be calibrated.
With reference to first aspect, the embodiment of the invention provides second of possible embodiments of first aspect, wherein work
Making circuit is alternating current circuit.
The possible embodiment of second with reference to first aspect, the embodiment of the invention provides the third of first aspect
Possible embodiment, wherein the power device in alternating current circuit is in non-working condition.
With reference to first aspect, the embodiment of the invention provides the 4th kind of possible embodiments of first aspect, wherein will
Effective current square value subtracts induced current calibration value, is subtracted each other as a result, obtaining school to result progress square root calculating is subtracted each other
After quasi- current value, further includes: if calibration current value is equal to zero, it is determined that calibration current value is correct.
With reference to first aspect, the embodiment of the invention provides the 5th kind of possible embodiments of first aspect, wherein sentences
Whether disconnected fundamental current virtual value is less than after the starting current value of electric energy meter to be detected, further includes: if it is not, then determining calibration
Current value is correct.
Second aspect, the embodiment of the present invention also provide a kind of electric power meter calibration device, comprising: the first computing module is used for
The initial effective current value of electric energy meter to be calibrated is obtained, and initial effective current value is subjected to a square calculating, obtains induced current
Calibration value；First obtains module, for obtaining the reality of electric energy meter to be calibrated using the operating circuit connecting with electric energy meter to be calibrated
Border effective current value；Second computing module obtains effective current square for carrying out a square calculating to actually active current value
Value；Third computing module is subtracted each other for effective current square value to be subtracted induced current calibration value as a result, to knot is subtracted each other
Fruit carries out square root calculating, obtains calibration current value；Second obtain module, if for calibrate current value be greater than zero, obtain to
Detect the fundamental current virtual value of electric energy meter；Judgment module, for judging whether fundamental current virtual value is less than electric energy to be detected
The starting current value of table；Determining module, for if it is, determining that calibration current value is zero.
In conjunction with second aspect, the embodiment of the invention provides the first possible embodiments of second aspect, wherein the
One computing module, is also used to: providing voltage to electric energy meter to be calibrated using detection device of electric energy meter；It is set by the reading of calibration tool
The initial effective current value of the metering chip in electric energy meter to be calibrated is set, and using initial effective current value as electric energy to be calibrated
The initial effective current value of table.
The third aspect, the embodiment of the present invention also provides a kind of electric energy meter calibrator (-ter) unit, including memory, processor, described
The computer program that can be run on the processor is stored in memory, when the processor executes the computer program
The step of realizing above-mentioned method as described in relation to the first aspect.
Fourth aspect, the embodiment of the present invention also provide a kind of meter of non-volatile program code that can be performed with processor
Calculation machine readable medium, said program code make the method for the processor execution as described in relation to the first aspect.
Technical solution provided in an embodiment of the present invention bring it is following the utility model has the advantages that
Electric energy meter calibration method, device and equipment provided in an embodiment of the present invention, comprising: obtain electric energy to be calibrated first
The initial effective current value of table, and initial effective current value is subjected to a square calculating, induced current calibration value is obtained, is then utilized
The operating circuit connecting with electric energy meter to be calibrated obtains the actually active current value of electric energy meter to be calibrated, later to actually active
Current value carries out square calculating to obtain effective current square value, furthermore, effective current square value is subtracted into induced current school
Quasi- value is to be subtracted each other as a result, square root calculating is carried out to result is subtracted each other to obtain calibration current value, if last calibration is electric
Flow valuve is greater than zero, then obtains the fundamental current virtual value of electric energy meter to be detected；It is to be checked to judge whether fundamental current virtual value is less than
Survey the starting current value of electric energy meter；If it is, determining that calibration current value is zero, therefore, by applying induced current and base
Wave correcting current electric energy meter, improves the accuracy of the calibration of electric energy meter, to solve electric energy meter existing in the prior art
The technical issues of accuracy of calibration low technical problem.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification and attached drawing
Specifically noted structure is achieved and obtained.
To enable the above objects, features and advantages of the present invention to be clearer and more comprehensible, preferred embodiment is cited below particularly, and cooperate
Appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of flow chart of electric energy meter calibration method provided by the embodiment of the present invention；
Fig. 2 is the flow chart of another kind electric energy meter calibration method provided by the embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of electric power meter calibration device provided by the embodiment of the present invention；
Fig. 4 provides a kind of structural schematic diagram of electric energy meter calibrator (-ter) unit by the embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with attached drawing to the present invention
Technical solution be clearly and completely described, it is clear that described embodiments are some of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Currently, existing electric energy meter is to realize by adjusting the bias device of electric energy meter computation chip to electric energy meter current
Calibration, calibration effect is bad, and there are still deviations for actual current value, and the Experience Degree of user is poor, therefore, existing electric energy meter school
Standard is inaccurate, and is based on this, and a kind of electric energy meter calibration method, device and equipment provided in an embodiment of the present invention can solve
The technical issues of technical problem of electric energy meter calibration inaccuracy existing in the prior art.
For convenient for understanding the present embodiment, first to a kind of electric energy meter calibration side disclosed in the embodiment of the present invention
Method, device and system describe in detail.
Embodiment one:
The embodiment of the present invention provides a kind of electric energy meter calibration method, as shown in Figure 1, this method comprises:
Step S102, obtains the initial effective current value of electric energy meter to be calibrated, and initial effective current value is carried out square
It calculates, obtains induced current calibration value.
Specifically, the initial current virtual value of electric energy meter to be measured is read by electric energy meter upper computer software, wherein to
The initial current virtual value for surveying electric energy meter is electric energy meter computation chip metering to be measured, and the current effective value of metering chip is to pass through
What following formula measured,
Wherein, inFor the sampled value of metering chip；N is sampling number；IrmsFor metering chip current effective value.Then will
Initial current virtual value carries out a square calculating, induced electricity flow valuve is obtained, to calibrate electric energy meter.
Step S104 obtains the actually active of electric energy meter to be calibrated using the operating circuit connecting with electric energy meter to be calibrated
Current value.Wherein, operating circuit is alternating current circuit, and the power device in alternating current circuit is in non-working condition.
Specifically, when electric energy meter comes into operation again, it can be by the power circuit of electric energy meter accessing user, to detect user
The current value used, still, for user in the case where no use with device, electric energy meter can may also show current value, because
This, needs to calibrate the effective current value of electric energy meter, to reduce the loss of user.Operating current be alternating current circuit be in order to
Adapt to Chinese residents life and set, since China Power Grids system is the alternating voltage that the voltage that user provides is 220V.With
Electric installation includes: electric light, TV, washing machine and other electrical equipments.By the way that in detection operating circuit, electric energy meter actually has
Imitate current value, calibration electric energy meter that can be more accurate.
Step S106 carries out a square calculating to actually active current value, obtains effective current square value.It wherein, will be practical
It is to calculate the data basis that calibration current value is done that effective current value, which carries out square calculating,.
Effective current square value is subtracted induced current calibration value by step S108, subtracted each other as a result, to subtract each other result into
Row square root calculates, and obtains calibration current value.The main process task chip of electric energy meter obtain electric energy meter actual current virtual value and
After the induced current calibration value of electric energy meter, calibration current value is obtained by calculation.
Step S110 obtains the fundamental current virtual value of electric energy meter to be detected if calibration current value is greater than zero.Due to warp
After crossing faradic calibration, it is likely present certain error, furthermore the internal interference or alien crosstalk of electric energy meter are basic
It is caused to be all that harmonic value changes, therefore can introduce fundamental current when calibration and carry out secondary calibration.Wherein,
The current value that electric energy meter is shown is full-wave electric current value, includes: that fundamental current virtual value and harmonic current have in full-wave electric current value
Valid value, and fundamental current virtual value and harmonic current virtual value can be directly read from the metering chip of electric energy meter.
Step S112, judges whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected.Wherein, different
Electric energy meter to be measured correspond to different starting current values and can compare the starting current value such as electric energy meter in the following table 1, wherein Ib is
The load current value of electric energy meter.
Table 1
Step S114, if it is, determining that calibration current value is zero.If fundamental current virtual value is less than electric energy to be detected
Calibration current value is assigned a value of 0 by the starting value of table.
Electric energy meter calibration method provided in an embodiment of the present invention, comprising: obtain the initial effective current of electric energy meter to be calibrated
Value, and initial effective current value is subjected to a square calculating, obtain induced current calibration value；Utilize what is connect with electric energy meter to be calibrated
Operating circuit obtains the actually active current value of electric energy meter to be calibrated, carries out a square calculating to actually active current value later, obtains
To effective current square value；Effective current square value is subtracted into induced current calibration value, subtracted each other as a result, to subtract each other result into
Row square root calculates, and obtains calibration current value；If calibrating current value is greater than zero, the fundamental current for obtaining electric energy meter to be detected has
Valid value；Judge whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected；If it is, determining calibration electric current
Value is zero, and which improves the accuracy of the calibration of electric energy meter, brings good experience to user.
Embodiment two:
The embodiment of the present invention provides another electric energy meter calibration method, as shown in Fig. 2, this method comprises:
Step S202 provides voltage to electric energy meter to be calibrated using detection device of electric energy meter.Detection device of electric energy meter is only
Electric energy meter to be detected provides voltage and does not provide electric current, is subject to and guarantees to detect the initial effective current value in electric energy meter to be detected
Really value, wherein the voltage value that detection device of electric energy meter provides is 220V.
Step S204 reads the initial effective current for the metering chip being arranged in electric energy meter to be calibrated by calibration tool
Value, and using initial effective current value as the initial effective current value of electric energy meter to be calibrated.Wherein, calibration tool is on electric energy meter
Position machine calibration software.
Initial effective current value is carried out a square calculating, obtains induced current calibration value by step S206.
Step S208 obtains the actually active of electric energy meter to be calibrated using the operating circuit connecting with electric energy meter to be calibrated
Current value.
Step S210 carries out a square calculating to actually active current value, obtains effective current square value.
Effective current square value is subtracted induced current calibration value by step S212, subtracted each other as a result, to subtract each other result into
Row square root calculates, and obtains calibration current value.
Step S214 judges to calibrate whether current value is equal to zero.If calibrating current value is greater than zero, step S216 is executed,
If calibrating current value is equal to zero, step S218 is executed.
Step S216 obtains the fundamental current virtual value of electric energy meter to be detected.
Step S218 determines that calibration current value is correct.It does not need then to carry out step S220.
Step S220, judges whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected, if so, holding
Row step S222, if not, executing step S224.
Step S222 determines that calibration current value is zero.
Step S224 determines that calibration current value is correct.If it is not, then thinking that the current value of step S214 alignment is correct.
The embodiment of the present invention improves the calibration of electric energy meter by calibrating electric energy meter using induced current and fundamental current
Accuracy, bring good experience to user.
Embodiment three:
The embodiment of the present invention provides a kind of electric power meter calibration device, as shown in figure 3, the device includes: the first computing module
31, first obtain module 32, the second computing module 33, third computing module 34, second obtain module 35, judgment module 36 and
Determining module 37.
Specifically, the first computing module 31 is used to obtain the initial effective current value of electric energy meter to be calibrated, and will initially have
It imitates current value and carries out a square calculating, obtain induced current calibration value.Wherein, the first computing module is also used to: being examined using electric energy meter
It surveys device and provides voltage to electric energy meter to be calibrated；The metering chip being arranged in electric energy meter to be calibrated is read by calibration tool
Initial effective current value, and using initial effective current value as the initial effective current value of electric energy meter to be calibrated.
First acquisition module 32 is used to obtain electric energy meter to be calibrated using the operating circuit connecting with electric energy meter to be calibrated
Actually active current value；Second computing module 33 is used to carry out actually active current value a square calculating, and it is flat to obtain effective current
Side's value；Third computing module 34 is used to effective current square value subtracting induced current calibration value, is subtracted each other as a result, to subtracting each other
As a result square root calculating is carried out, calibration current value is obtained；If second, which obtains module 35, is greater than zero for calibrating current value, obtain
The fundamental current virtual value of electric energy meter to be detected；Judgment module 36 is for judging whether fundamental current virtual value is less than electricity to be detected
The starting current value of energy table；Determining module 37 is used for if it is, determining that calibration current value is zero.
Embodiment provided by the invention, by obtaining the initial effective current value of electric energy meter to be calibrated, and will be initially effective
Current value carries out a square calculating, after obtaining induced current calibration value, utilizes the operating circuit connecting with electric energy meter to be calibrated, obtains
After the actually active current value of electric energy meter to be calibrated, a square calculating is carried out to actually active current value, it is flat to obtain effective current
Side's value, subtracts induced current calibration value for effective current square value, is subtracted each other as a result, carrying out square root meter to result is subtracted each other
It calculates, obtains calibration current value, if calibration current value is greater than zero, obtains the fundamental current virtual value of electric energy meter to be detected, pass through
Judge whether fundamental current virtual value is less than the starting current value of electric energy meter to be detected, if it is, determining that calibration current value is
Zero improves the accuracy of the calibration of electric energy meter, brings good experience to user.
Example IV:
A kind of electric energy meter calibrator (-ter) unit provided in an embodiment of the present invention, as shown in figure 4, electric energy meter calibrator (-ter) unit 4 includes depositing
Reservoir 41, processor 42 are stored with the computer program that can be run on the processor, the processor in the memory
The step of method that above-described embodiment one or embodiment two provide is realized when executing the computer program.
Referring to fig. 4, electric energy meter calibrator (-ter) unit 4 further include: bus 43 and communication interface 44, processor 42, communication interface 44
It is connected with memory 41 by bus 43；Processor 42 is used to execute the executable module stored in memory 41, such as calculates
Machine program.
Wherein, memory 41 may include high-speed random access memory (RAM, Random AccessMemory), can also
It can further include nonvolatile memory (non-volatile memory), for example, at least a magnetic disk storage.Pass through at least one
A communication interface 44 (can be wired or wireless) realizes the communication link between the system network element and at least one other network element
It connects, internet, wide area network, local network, Metropolitan Area Network (MAN) etc. can be used.
Bus 43 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data
Bus, control bus etc..Only to be indicated with a four-headed arrow convenient for indicating, in Fig. 4, it is not intended that an only bus or
A type of bus.
Wherein, memory 41 is for storing program, and the processor 42 executes the journey after receiving and executing instruction
Sequence, method performed by the device that the stream process that aforementioned any embodiment of the present invention discloses defines can be applied to processor 42
In, or realized by processor 42.
Processor 42 may be a kind of IC chip, the processing capacity with signal.During realization, above-mentioned side
Each step of method can be completed by the integrated logic circuit of the hardware in processor 42 or the instruction of software form.Above-mentioned
Processor 42 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network
Processor (Network Processor, abbreviation NP) etc.；It can also be digital signal processor (Digital Signal
Processing, abbreviation DSP), specific integrated circuit (Application Specific Integrated Circuit, referred to as
ASIC), ready-made programmable gate array (Field-Programmable Gate Array, abbreviation FPGA) or other are programmable
Logical device, discrete gate or transistor logic, discrete hardware components.It may be implemented or execute in the embodiment of the present invention
Disclosed each method, step and logic diagram.General processor can be microprocessor or the processor is also possible to appoint
What conventional processor etc..The step of method in conjunction with disclosed in the embodiment of the present invention, can be embodied directly in hardware decoding processing
Device executes completion, or in decoding processor hardware and software module combination execute completion.Software module can be located at
Machine memory, flash memory, read-only memory, programmable read only memory or electrically erasable programmable memory, register etc. are originally
In the storage medium of field maturation.The storage medium is located at memory 41, and processor 42 reads the information in memory 41, in conjunction with
Its hardware completes the step of above method.
Embodiment five:
It is provided in an embodiment of the present invention it is a kind of with processor can be performed non-volatile program code it is computer-readable
Medium, said program code make the method that the processor executes above-described embodiment one or embodiment two provides.
The computer-readable medium of the non-volatile program code provided in an embodiment of the present invention that can be performed with processor,
With electric energy meter calibration method provided by the above embodiment, device and equipment technical characteristic having the same, so also can solve
Identical technical problem reaches identical technical effect.
The computer program product of electric energy meter calibration method, device and equipment is carried out provided by the embodiment of the present invention,
Computer readable storage medium including storing the executable non-volatile program code of processor, said program code include
Instruction can be used for executing previous methods method as described in the examples, specific implementation can be found in embodiment of the method, herein no longer
It repeats.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer readable storage medium.Based on this understanding, technical solution of the present invention is substantially in other words
The part of the part that contributes to existing technology or the technical solution can be embodied in the form of software products, the meter
Calculation machine software product is stored in a storage medium, including some instructions are used so that a computer equipment (can be a
People's computer, server or network equipment etc.) it performs all or part of the steps of the method described in the various embodiments of the present invention.
And storage medium above-mentioned includes: that USB flash disk, mobile hard disk, read-only memory (ROM, Read-OnlyMemory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic or disk.
Finally, it should be noted that embodiment described above, only a specific embodiment of the invention, to illustrate the present invention
Technical solution, rather than its limitations, scope of protection of the present invention is not limited thereto, although with reference to the foregoing embodiments to this hair
It is bright to be described in detail, those skilled in the art should understand that: anyone skilled in the art
In the technical scope disclosed by the present invention, it can still modify to technical solution documented by previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement of some of the technical features；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of technical solution of the embodiment of the present invention, should all cover in protection of the invention
Within the scope of.Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. a kind of electric energy meter calibration method characterized by comprising
The initial effective current value of electric energy meter to be calibrated is obtained, and the initial effective current value is subjected to a square calculating, is obtained
Induced current calibration value；
Using the operating circuit connecting with the electric energy meter to be calibrated, the actually active electric current of the electric energy meter to be calibrated is obtained
Value；
A square calculating is carried out to the actually active current value, obtains effective current square value；
The effective current square value is subtracted into the induced current calibration value, subtracted each other as a result, to it is described subtract each other result into
Row square root calculates, and obtains calibration current value；
If the calibration current value is greater than zero, the fundamental current virtual value of electric energy meter to be detected is obtained；
Judge whether the fundamental current virtual value is less than the starting current value of electric energy meter to be detected；
If it is, determining that the calibration current value is zero.
2. electric energy meter calibration method according to claim 1, which is characterized in that described to obtain the initial of electric energy meter to be calibrated
Effective current value, comprising:
Voltage is provided to the electric energy meter to be calibrated using detection device of electric energy meter；
The initial effective current value of metering chip being arranged in the electric energy meter to be calibrated is read by calibration tool, and by institute
State initial effective current value of the initial effective current value as the electric energy meter to be calibrated.
3. electric energy meter calibration method according to claim 1, which is characterized in that the operating circuit is alternating current circuit.
4. electric energy meter calibration method according to claim 3, which is characterized in that at the power device in the alternating current circuit
In non-working condition.
5. electric energy meter calibration method according to claim 1, which is characterized in that described to subtract the effective current square value
Remove the induced current calibration value, subtracted each other as a result, to it is described subtract each other result carry out square root calculating, obtain calibration current value
Later, further includes:
If the calibration current value is equal to zero, it is determined that the calibration current value is correct.
6. electric energy meter calibration method according to claim 1, which is characterized in that the judgement fundamental current virtual value
Whether it is less than after the starting current value of electric energy meter to be detected, further includes:
If it is not, then determining that the calibration current value is correct.
7. a kind of electric power meter calibration device characterized by comprising
First computing module, for obtaining the initial effective current value of electric energy meter to be calibrated, and by the initial effective current value
A square calculating is carried out, induced current calibration value is obtained；
First obtains module, for obtaining the electric energy to be calibrated using the operating circuit connecting with the electric energy meter to be calibrated
The actually active current value of table；
Second computing module obtains effective current square value for carrying out a square calculating to the actually active current value；
Third computing module, for the effective current square value to be subtracted the induced current calibration value, subtracted each other as a result,
Square root calculating is carried out to the result of subtracting each other, obtains calibration current value；
Second obtains module, if being greater than zero for the calibration current value, the fundamental current for obtaining electric energy meter to be detected is effective
Value；
Judgment module, for judging whether the fundamental current virtual value is less than the starting current value of electric energy meter to be detected；
Determining module, for if it is, determining that the calibration current value is zero.
8. electric power meter calibration device according to claim 7, which is characterized in that first computing module is also used to:
Voltage is provided to the electric energy meter to be calibrated using detection device of electric energy meter；
The initial effective current value of metering chip being arranged in the electric energy meter to be calibrated is read by calibration tool, and by institute
State initial effective current value of the initial effective current value as the electric energy meter to be calibrated.
9. a kind of electric energy meter calibrator (-ter) unit, including memory, processor, being stored in the memory can be on the processor
The computer program of operation, which is characterized in that the processor realized when executing the computer program the claims 1 to
The step of 6 described in any item methods.
10. a kind of computer-readable medium for the non-volatile program code that can be performed with processor, which is characterized in that described
Program code makes the processor execute described any the method for claim 1 to 6.
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| CN113030835A (en) * | 2021-02-05 | 2021-06-25 | 宁波三星医疗电气股份有限公司 | Electric energy meter metering method |
| CN115587287A (en) * | 2022-11-24 | 2023-01-10 | 石家庄科林电气股份有限公司 | Hidden danger checking method and device for electric energy meter and electric energy meter |
| CN116223903A (en) * | 2023-05-06 | 2023-06-06 | 烟台东方威思顿电气有限公司 | Anti-interference circuit and method for three-phase three-wire electric energy meter under alternating current magnetic field |
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| CN117724031A (en) * | 2024-02-07 | 2024-03-19 | 天津瑞芯源智能科技有限责任公司 | High-efficiency calibration method for measuring precision of electronic electric energy meter |
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