CN207037064U - Ammeter falls zero line error calibration and detecting system - Google Patents
Ammeter falls zero line error calibration and detecting system Download PDFInfo
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Abstract
The utility model provides a kind of ammeter and falls zero line error calibration and detecting system, including host computer, detection platform, calibration power table and Duo Tai intelligent electric meters to be detected；The host computer is connected with the detection platform, for reading the current effective value of more intelligent electric meters, generates the calibration coefficient of every intelligent electric meter；The calibration order for including calibration coefficient is sent to more intelligent electric meters；For any intelligent electric meter, when the current effective value is more than default decision threshold, determine that intelligent electric meter detection is qualified；The detection platform is connected with intelligent electric meter described in the calibration power table and Duo Tai respectively, for reading the current effective value of more intelligent electric meters；The calibration power table, for providing voltage x current for the detection platform；The intelligent electric meter, for storing the calibration coefficient, and then realize that ammeter falls the calibration of zero line error.The utility model can reach the technique effect of quick calibration and inspection table.
Description
Technical field
The utility model is related to intelligent electric meter detection technique field, more particularly, to a kind of ammeter fall zero line error calibration and
Detecting system.
Background technology
Intelligent electric meter is the intelligent terminal of intelligent grid, and its basic function is metering user power consumption.In order to ensure user
Electricity consumption is trusted, it is necessary to which intelligent electric meter is capable of the power consumption of accurate metering user, therefore, in factory mass production of intelligent ammeter
Afterwards, it is necessary to be calibrated to the parameters of ammeter.
At present, in order to improve the accuracy of intelligent electric meter metering, before intelligent electric meter dispatches from the factory, typically using pulse detection
The error of ammeter is detected, then intelligent electric meter is calibrated further according to the error of detection, but is detected using pulse detection
Error, go out the time length of pulse, cause the prover time needed for each intelligent electric meter to be grown, calibration efficiency is low, in high-volume intelligence
When ammeter needs calibration, the time of consuming will more lengthen, and be delayed the time of making the product of intelligent electric meter.
Utility model content
In view of this, the purpose of this utility model is that providing ammeter falls zero line error calibration and detecting system, to alleviate
Prover time length present in prior art needed for each intelligent electric meter, calibration efficiency is low, is needed in high-volume intelligent electric meter
During calibration, the time of consuming will more lengthen, and be delayed the technical problem at the time of making the product of intelligent electric meter.
In a first aspect, the utility model embodiment, which provides a kind of ammeter, falls zero line error calibration and detecting system, including：
Host computer, detection platform, calibration power table and Duo Tai intelligent electric meters to be detected；
The host computer is connected with the detection platform, for reading the electricity of more intelligent electric meters by the detection platform
Virtual value is flowed, determines that function generates the calibration system of every intelligent electric meter according to the current effective value and default calibration coefficient
Number；The calibration order for including calibration coefficient is sent to by more intelligent electric meters by the detection platform；For any institute
Intelligent electric meter is stated, when the current effective value is more than default decision threshold, determines that intelligent electric meter detection is qualified；
The detection platform is connected with intelligent electric meter described in the calibration power table and Duo Tai respectively, for reading more intelligence
The current effective value of energy ammeter；
The calibration power table, for during falling zero line and calibrating for error, read more intelligent electric meters electric current it is effective
Before value, single-phase output no-voltage, the electric current of single-phase output first, single-phase output first phase are provided for the detection platform；
Fall zero line calibrate for error during, the calibration order for including calibration coefficient is sent to more intelligent electric meters before, for detection
Platform is provided as single-phase output first voltage, the electric current of single-phase output first, single-phase output first phase；During table is examined, read
Before the current effective value for taking more intelligent electric meters, single-phase output first voltage is provided for detection platform, single-phase zero current is single-phase
Export first phase；；
The intelligent electric meter, for storing the calibration coefficient, and then realize that ammeter falls the calibration of zero line error.
With reference in a first aspect, the utility model embodiment provides the first possible embodiment of first aspect, its
In, when detection platform is configured into single-phase output first voltage, the electric current of single-phase output first, during single-phase output second phase, institute
Host computer is stated to be additionally operable to：
By the detection platform to the more intelligent electric meter sending mode control instructions, so that the more intelligence electricity
Table enters factory mode；Calibration parameter initialization is sent by the detection platform to the more intelligent electric meters to instruct, so that
The more intelligent electric meters are initialized the calibration parameter wherein stored；With more institutes are read by the detection platform
State the data parameters of intelligent electric meter.
With reference in a first aspect, the utility model embodiment provides second of possible embodiment of first aspect, its
In, the host computer is additionally operable to：
The detection platform is obtained to the platform output parameter of the more intelligent electric meter output；Pass through the detection platform
Read the ammeter measurement parameter of every intelligent electric meter measurement；According to the platform output parameter and the ammeter measurement parameter
Determine the angular correction values and power gain corrected value of each phase of every intelligent electric meter；With pass through the detection platform
The angular correction values of each phase and the power gain corrected value are respectively written into corresponding intelligent electric meter.
With reference in a first aspect, the utility model embodiment provides the third possible embodiment of first aspect, its
In, the host computer is additionally operable to：
The instantaneous measure of more intelligent electric meters is read by the detection platform, the instantaneous measure includes instantaneous survey
Measure voltage and the transient measurement electric current of each phase；For every intelligent electric meter, by the first voltage and transient measurement electricity
Pressure ratio is compared with obtaining instantaneous voltage calibration value；By first electric current of each phase and the transient measurement electric current of corresponding phase
Compare, obtain the transient current calibration value of each phase；With by the detection platform by the instantaneous voltage calibration value and each phase
The transient current calibration value of position is respectively written into corresponding intelligent electric meter.
With reference in a first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect, its
In, when detection platform is configured as single-phase output first voltage, the electric current of single-phase output second, during single-phase output first phase, institute
Host computer is stated to be additionally operable to：
Each active power mutually actually measured of every intelligent electric meter is repeatedly read by the detection platform；Determine every intelligence
The average active power of energy each phase of ammeter；The detection platform is obtained to each phase wattful power of the more intelligent electric meter output
Rate；It is true using each phase active power of intelligent electric meter output, the average active power of each phase of intelligent electric meter and default offset
Determine function, calculate the small signal power offset of each phase of every intelligent electric meter；With by the detection platform by described in each phase
Small signal power offset is written in corresponding intelligent electric meter.
With reference in a first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect, its
In, the detection platform includes：Multiple first serial communication modules being used for intelligent electric meter communication.
With reference in a first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect, its
In, the intelligent electric meter includes being used for the second serial communication module with detection platform communication.
With reference in a first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect, its
In, the host computer is connected with the detection platform by serial ports.
With reference in a first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect, its
In, the detection platform is connected with intelligent electric meter described in the calibration power table and Duo Tai by serial ports respectively.
With reference in a first aspect, the utility model embodiment provides the 9th kind of possible embodiment of first aspect, its
In, the calibration power table is additionally operable to analog AC voltage, to provide electric energy for the flashlight that is connected with the calibration power table.
The utility model embodiment brings following beneficial effect：A kind of ammeter that the utility model embodiment provides falls zero
Line error calibration and detection method and system, it can be calibrated to falling zero line error due to only needing to configure detection platform items
Output parameter, transmit the current effective value of intelligent electric meter, generation and the time for transmitting calibration order, generally 12 seconds with
It is interior, only need to configure detection platform items output parameter, reading current effective value and host computer internal arithmetic during inspection table
Time, therefore fall that zero line calibrates for error and the speed of inspection watch is very fast, calibration and inspection table efficiency high can be to high-volume intelligence electricity
Table carries out zero line and calibrated for error and inspection table simultaneously, saves before intelligent electric meter dispatches from the factory calibration and inspection table time.
Other feature and advantage of the present utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and obtained in book, claims and accompanying drawing.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, describe below
In accompanying drawing be some embodiments of the present utility model, for those of ordinary skill in the art, do not paying creativeness
On the premise of work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of structure that a kind of ammeter that the utility model embodiment provides falls zero line error calibration and detection means
Schematic diagram；
Fig. 2 is a kind of structural representation for the detection platform that the utility model embodiment provides；
Fig. 3 is a kind of structural representation for the intelligent electric meter that the utility model embodiment provides；
Fig. 4 is another knot that a kind of ammeter that the utility model embodiment provides falls zero line error calibration and detection means
Structure schematic diagram.
Icon：11- host computers；12- detection platforms；13- calibration power tables；More intelligent electric meters to be detected of 14-.
Embodiment
To make the purpose, technical scheme and advantage of the utility model embodiment clearer, below in conjunction with accompanying drawing to this
The technical scheme of utility model is clearly and completely described, it is clear that described embodiment is that the utility model part is real
Apply example, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, belong to the scope of the utility model protection.
Pulse detection detection error is used at present, goes out the time length of pulse, causes the calibration needed for each intelligent electric meter
Time is grown, and calibration efficiency is low, and when high-volume intelligent electric meter needs calibration, the time of consuming will more lengthen, and be delayed intelligence electricity
The time of making the product of table, based on this, the utility model embodiment provide a kind of ammeter fall zero line error calibration and detection method and
System, it can be calibrated to falling zero line error due to only needing to configure detection platform items output parameter, transmission intelligent electric meter
Current effective value, generation and transmit calibration order time, generally within 12 seconds, only need to match somebody with somebody during inspection table
Put detection platform items output parameter, read the time of current effective value and host computer internal arithmetic, therefore fall zero line error school
Accurate and inspection watch speed is very fast, calibration and inspection table efficiency high, can carry out zero line error simultaneously to high-volume intelligent electric meter
Calibration and inspection table, save before intelligent electric meter dispatches from the factory calibration and inspection table time.
Fall zero line error：Error caused by referring to ammeter when no voltage only has electric current (when falling zero line),
In practical application, it is desirable to which intelligent electric meter still can be measured normally when falling zero line, and error in dipping needs to be located at error
In allowed band.
For ease of understanding the present embodiment, zero line is fallen to a kind of ammeter disclosed in the utility model embodiment first
Error calibration and detecting system describe in detail, and methods described can apply in host computer, in the utility model embodiment
Host computer can be connected by serial ports with detection platform, detection platform further through serial ports respectively with standard scale and more intelligence
Ammeter connects, and intelligent electric meter refers to the intelligent electric meter for carrying zero line function, as shown in figure 1, the system includes：Host computer 11,
Detection platform 12, calibration power table 13 and Duo Tai intelligent electric meters 14 to be detected；
The host computer 11 is connected with the detection platform 12, for reading more intelligence electricity by the detection platform 12
The current effective value of table, determine that function generates the school of every intelligent electric meter according to the current effective value and default calibration coefficient
Table coefficient；The calibration order for including calibration coefficient is sent to by more intelligent electric meters by the detection platform；For any
Intelligent electric meter described in platform, when the current effective value is more than default decision threshold, determine that intelligent electric meter detection is qualified；
The detection platform 12 is connected with intelligent electric meter 14 described in the calibration power table 13 and Duo Tai respectively, for reading
The current effective value of more intelligent electric meters；
The calibration power table 13, for during falling zero line and calibrating for error, read more intelligent electric meters electric current have
Before valid value, single-phase output no-voltage, the electric current of single-phase output first, single-phase output first phase are provided for the detection platform；
In the utility model embodiment, host computer can instruct to detection platform send configuration, so that detection platform single-phase output zero
Voltage is Un=0, and the electric current of single-phase output first is I=Ib, and single-phase output first phase is 1.0L, waits detection platform to keep
After (the only not upper voltage status of upper electric current) 8s, more intelligent electric meters are read by the detection platform and read ammeter L roads and N roads
Current effective value.
Be sent to during falling zero line and calibrating for error, by the calibration order for including calibration coefficient more intelligent electric meters it
Before, it is provided as single-phase output first voltage, the electric current of single-phase output first, single-phase output first phase for detection platform；In this reality
With in new embodiment, host computer can instruct to detection platform send configuration, so that detection platform single-phase output no-voltage is U
=Un, the electric current of single-phase output first are I=Ib, and single-phase output first phase is 1.0L, can be according to when sending calibration order
Communications protocol and data format for pre-setting etc. are sent.
During examining table, before the current effective value of more intelligent electric meters of reading, single-phase output is provided for detection platform
First voltage, single-phase zero current, single-phase output first phase；In the utility model embodiment, it is determined that during default decision threshold,
Average value of the current effective value of multiple intelligent electric meters etc. can be counted beforehand through the mode of big data statistical analysis.Institute
When stating current effective value less than default decision threshold, it may be determined that intelligent electric meter detection is unqualified.
The intelligent electric meter 14, for storing the calibration coefficient, and then realize that ammeter falls the calibration of zero line error.
In the utility model embodiment, as shown in Fig. 2 the detection platform includes：It is multiple to be used to lead to intelligent electric meter
The first serial communication module of news.As shown in figure 3, the intelligent electric meter includes being used for second with detection platform communication
Serial communication module.The host computer is connected with the detection platform by serial ports.The detection platform respectively with the standard
Power meter is connected with intelligent electric meter described in Duo Tai by serial ports.The calibration power table is additionally operable to analog AC voltage, think with
The flashlight (such as Fig. 4) of the calibration power table connection provides electric energy.
The utility model embodiment is calibrated due to only needing to configure the every output ginseng of detection platform to falling zero line error
Number, the current effective value of transmission intelligent electric meter, generation and the time for transmitting calibration order, generally within 12 seconds,
Only need to configure detection platform items output parameter during inspection table, read the time of current effective value and host computer internal arithmetic,
Therefore fall that zero line calibrates for error and the speed of inspection watch is very fast, calibration and inspection table efficiency high can be same to high-volume intelligent electric meter
Shi Jinhang falls zero line and calibrated for error and inspection table, saves before intelligent electric meter dispatches from the factory calibration and inspection table time.
It is single-phase defeated when detection platform is configured into single-phase output first voltage in another embodiment of the present utility model
Go out the first electric current, during single-phase output second phase, in the utility model embodiment, can refer to detection platform send configuration
Order, so that detection platform single-phase output first voltage is U=Un, the electric current of single-phase output first is I=Ib, the phase of single-phase output second
Position is 0.5L, and the host computer is additionally operable to：
By the detection platform to the more intelligent electric meter sending mode control instructions, so that the more intelligence electricity
Table enters factory mode；
After intelligent electric meter enters factory mode, intelligent electric meter liquid crystal region designator prev flickers, when communicating successfully,
Ammeter, which can return, presets successfully return value, such as 0x06, and communication is unsuccessful, and intelligent electric meter returns to default failure return value, such as
0x15 etc..
Calibration parameter initialization is sent by the detection platform to the more intelligent electric meters to instruct, so that described in more
Intelligent electric meter is initialized the calibration parameter wherein stored；Intelligent electric meter is initialized the calibration parameter wherein stored
Refer to that original calibration parameter is formatted by intelligent electric meter.
With the data parameters of the more intelligent electric meters are read by the detection platform.
In the utility model embodiment, data parameters can refer to electric meter constant EC (3 bytes, binary-coded decimal), HFconst
(2 bytes, hex codes), meter voltage is shown, ammeter A phase currents show that B phase currents are shown, ammeter A phase active power is shown
Average value and B phases active power show average value；Ammeter A phases reactive power shows that average value and B phase reactive powers are shown averagely
Value；Ammeter A phase active power register values and B phase active power power register values；Ammeter A phase reactive power register values and
B phase reactive power register values.
It is U=Un in detection platform single-phase output first voltage, single-phase output first is electric on the basis of previous embodiment
Stream is I=Ib, and when single-phase output second phase is 0.5L, in another embodiment of the present utility model, the host computer is also used
In：
The detection platform is obtained to the platform output parameter of the more intelligent electric meter output；Implement in the utility model
Example in, platform output parameter can include detection platform output active power (TPA, TPB), actual reactive power (TQA,
TQB)。
The ammeter measurement parameter of every intelligent electric meter measurement is read by the detection platform；Ammeter measurement parameter can
With the active power (MPA, MPB), meter reactive power (MQA, MQB) etc. measured including intelligent electric meter.
Each phase of every intelligent electric meter is determined according to the platform output parameter and the ammeter measurement parameter
Angular correction values and power gain corrected value；Calculate angular correction values and may be referred in the following manner：
θ A=(TPA × MQA-MPA × TQA)/(MPA × TPA+MQA × TQA)；
θ B=(TPB × MQB-MPB × TQB)/(MPB × TPB+MQB × TQB)；
If θ A>=0, A phase angular correction values Gphs_A=INT [θ A × 2^15]；
Otherwise θ A<0, A phase angular correction values Gphs_A=INT [2^16+ θ A × 2^15]；
Similarly calculate B phase angular correction values Gphs_B.
Calculate power gain corrected value and may be referred in the following manner：
MPA '=MPA+MQA × θ A；
PA '=MPA ' × 2.304 × 10^10/ (HFconst × EC × 2^31)；
Pgain_A=TPA/PA ' -1；
If Pgain_A>=0 A phase power gain corrected value GPA=INT [Pgain_A × 2^15]；
Otherwise Pgain_A<0 A phase power gain corrected value GPA=INT [2^16+Pgain_A × 2^15]；
Similarly calculate B phase power gain corrected values GPB.
The angular correction values of each phase and the power gain corrected value are respectively written into by the detection platform
Into corresponding intelligent electric meter.
Following form is may be referred to when angular correction values are written in intelligent electric meter：
A phase phasings：Form (01NNNN), data HEX codes, 3 bytes, 01 represents A phases.
B phase phasings：Form (02NNNN), data HEX codes, 3 bytes, 02 represents B phases.
Following form is may be referred to when power gain corrected value is written in intelligent electric meter：
A phase capability corrections：Form (01NNNN), data HEX codes, 3 bytes, 01 represents A phases.
B phase capability corrections：Form (02NNNN), data HEX codes, 3 bytes, 02 represents B phases.
It is U=Un in detection platform single-phase output first voltage in another embodiment of the present utility model, single-phase output
First electric current is I=Ib, and when single-phase output second phase is 0.5L, the host computer is additionally operable to：
The instantaneous measure of more intelligent electric meters is read by the detection platform, the instantaneous measure includes instantaneous survey
Measure voltage and the transient measurement electric current of each phase；For every intelligent electric meter, by the first voltage and transient measurement electricity
Pressure ratio is compared with obtaining instantaneous voltage calibration value；By first electric current of each phase and the transient measurement electric current of corresponding phase
Compare, obtain the transient current calibration value of each phase；With by the detection platform by the instantaneous voltage calibration value and each phase
The transient current calibration value of position is respectively written into corresponding intelligent electric meter.
It is single-phase defeated when detection platform is configured as single-phase output first voltage in another embodiment of the present utility model
Go out the second electric current, it is during single-phase output first phase, i.e., single when detection platform is configured as single-phase output first voltage i.e. U=Un
Mutually the second electric current of output is I=5%Ib, and when single-phase output first phase is 1.0L, the host computer is additionally operable to：
Each active power mutually actually measured of every intelligent electric meter is repeatedly read by the detection platform；It is for example, upper
Machine communicates 10 reading actual active power measured of intelligent electric meter AB phases.
The average active power of each phase of every intelligent electric meter is determined, is designated as A_PowerS, B_PowerS.
The detection platform is obtained to each phase active power of the more intelligent electric meter output；, i.e. detection platform output
AB phase active power be respectively A_PrealS, B_PrealS.
Utilize each phase active power of intelligent electric meter output, the average active power of each phase of intelligent electric meter and default compensation
Value determines function, calculates the small signal power offset of each phase of every intelligent electric meter.
In the utility model embodiment, PoffsetA=A_PrealS/ (2.304 × 10^10/ (HFconst × EC × 2
^31))-A_PowerS；
If PoffsetA is more than 0, PoffsetA=PoffsetA is calculated to obtain.
If PoffsetA is less than 0, Poffset A=2^8+PoffsetA are calculated to obtain.
B phase PoffsetB values are calculated in same method.
The small signal power offset of each phase is written in corresponding intelligent electric meter by the detection platform.
In the utility model embodiment, gained small-signal offset PoffsetA value communication write-in intelligent electric meters will be calculated
Computation chip, form (01NNNN), data HEX codes, 3 bytes, 01 represent A phases.
The computation chip of gained small-signal offset B phase PoffsetB value write-in intelligent electric meters, form will be calculated
(02NNNN), data HEX codes, 3 bytes, 02 represents B phases.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description
With the specific work process of device, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In addition, in the description of the utility model embodiment, unless otherwise clearly defined and limited, term " installation ",
" connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or integratedly be connected
Connect；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, can
To be the connection of two element internals.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the utility model.
If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical solution of the utility model substantially or
Person says that the part of the part to be contributed to prior art or the technical scheme can be embodied in the form of software product,
The computer software product is stored in a storage medium, including some instructions are causing a computer equipment (can be with
Personal computer, server, or network equipment etc.) perform each embodiment methods described of the utility model whole or portion
Step by step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), with
Machine access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with Jie of store program codes
Matter.
, it is necessary to explanation in description of the present utility model, term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instruction such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
Described for the ease of description the utility model and simplifying, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore it is not intended that to limitation of the present utility model.In addition, term " the
One ", " second ", " the 3rd " are only used for describing purpose, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical scheme of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to foregoing
The utility model is described in detail embodiment, it will be understood by those within the art that：It is any to be familiar with this skill
For the technical staff in art field in the technical scope that the utility model discloses, it still can be to the skill described in previous embodiment
Art scheme is modified or can readily occurred in change, or carries out equivalent substitution to which part technical characteristic；And these modifications,
Change is replaced, and the essence of appropriate technical solution is departed from the spirit and model of the utility model embodiment technical scheme
Enclose, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model described should be wanted with right
The protection domain asked is defined.
Claims (10)
1. a kind of ammeter falls zero line error calibration and detecting system, it is characterised in that including：Host computer, detection platform, standard work(
Rate table and Duo Tai intelligent electric meters to be detected；
The host computer is connected with the detection platform, and the electric current for reading more intelligent electric meters by the detection platform has
Valid value, determine that function generates the calibration coefficient of every intelligent electric meter according to the current effective value and default calibration coefficient；It is logical
Cross the detection platform and the calibration order for including calibration coefficient is sent to more intelligent electric meters；For any intelligence
Ammeter, when the current effective value is more than default decision threshold, determine that intelligent electric meter detection is qualified；
The detection platform is connected with intelligent electric meter described in the calibration power table and Duo Tai respectively, for reading more intelligence electricity
The current effective value of table；
The calibration power table, for during falling zero line and calibrating for error, read more intelligent electric meters current effective value it
Before, provide single-phase output no-voltage, the electric current of single-phase output first, single-phase output first phase for the detection platform；Falling zero
Line calibrate for error during, the calibration order for including calibration coefficient is sent to more intelligent electric meters before, be detection platform
It is provided as single-phase output first voltage, the electric current of single-phase output first, single-phase output first phase；During table is examined, read it is more
Before the current effective value of platform intelligent electric meter, single-phase output first voltage, single-phase zero current, single-phase output are provided for detection platform
First phase；
The intelligent electric meter, for storing the calibration coefficient, and then realize that ammeter falls the calibration of zero line error.
2. ammeter according to claim 1 falls zero line error calibration and detecting system, it is characterised in that when by detection platform
It is configured to single-phase output first voltage, the electric current of single-phase output first, during single-phase output second phase, the host computer is additionally operable to：
By the detection platform to the more intelligent electric meter sending mode control instructions, so that the more intelligent electric meters enter
Enter factory mode；Calibration parameter initialization is sent by the detection platform to the more intelligent electric meters to instruct, so that more
The intelligent electric meter is initialized the calibration parameter wherein stored；With the more intelligence are read by the detection platform
The data parameters of energy ammeter.
3. ammeter according to claim 2 falls zero line error calibration and detecting system, it is characterised in that the host computer is also
For：
The detection platform is obtained to the platform output parameter of the more intelligent electric meter output；Read by the detection platform
The ammeter measurement parameter of every intelligent electric meter measurement；Determined according to the platform output parameter and the ammeter measurement parameter
The angular correction values and power gain corrected value of each phase of every intelligent electric meter；With will be each by the detection platform
The angular correction values of phase and the power gain corrected value are respectively written into corresponding intelligent electric meter.
4. ammeter according to claim 3 falls zero line error calibration and detecting system, it is characterised in that the host computer is also
For：
The instantaneous measure of more intelligent electric meters is read by the detection platform, the instantaneous measure includes transient measurement electricity
The transient measurement electric current of pressure and each phase；For every intelligent electric meter, by the first voltage and the transient measurement voltage ratio
Compared with obtaining instantaneous voltage calibration value；The transient measurement electric current of first electric current of each phase and corresponding phase is compared,
Obtain the transient current calibration value of each phase；With by the detection platform by the instantaneous voltage calibration value and each phase
The transient current calibration value is respectively written into corresponding intelligent electric meter.
5. ammeter according to claim 4 falls zero line error calibration and detecting system, it is characterised in that when detection platform quilt
It is configured to single-phase output first voltage, the electric current of single-phase output second, during single-phase output first phase, the host computer is additionally operable to：
Each active power mutually actually measured of every intelligent electric meter is repeatedly read by the detection platform；Determine every intelligence electricity
The average active power of each phase of table；The detection platform is obtained to each phase active power of the more intelligent electric meter output；Profit
Each phase active power, the average active power of each phase of intelligent electric meter and the default offset exported with intelligent electric meter determines letter
Number, calculate the small signal power offset of each phase of every intelligent electric meter；With by the detection platform by the small letter of each phase
Number power compensating value be written to corresponding in intelligent electric meter.
6. ammeter according to claim 2 falls zero line error calibration and detecting system, it is characterised in that the detection platform
Including：Multiple first serial communication modules being used for intelligent electric meter communication.
7. ammeter according to claim 6 falls zero line error calibration and detecting system, it is characterised in that the intelligent electric meter
Include being used for the second serial communication module with detection platform communication.
8. ammeter according to claim 7 falls zero line error calibration and detecting system, it is characterised in that the host computer with
The detection platform is connected by serial ports.
9. ammeter according to claim 8 falls zero line error calibration and detecting system, it is characterised in that the detection platform
It is connected respectively with intelligent electric meter described in the calibration power table and Duo Tai by serial ports.
10. ammeter according to claim 9 falls zero line error calibration and detecting system, it is characterised in that the standard work(
Rate table is additionally operable to analog AC voltage, to provide electric energy for the flashlight that is connected with the calibration power table.
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| CN201721086146.8U CN207037064U (en) | 2017-08-28 | 2017-08-28 | Ammeter falls zero line error calibration and detecting system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329107A (en) * | 2017-08-28 | 2017-11-07 | 华立科技股份有限公司 | Ammeter falls zero line error calibration and detection method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107329107A (en) * | 2017-08-28 | 2017-11-07 | 华立科技股份有限公司 | Ammeter falls zero line error calibration and detection method and system |
| CN107329107B (en) * | 2017-08-28 | 2023-11-10 | 华立科技股份有限公司 | Method and system for correcting and detecting zero line error of ammeter |
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