CN108008341A - A kind of adjusting process of electric energy meter - Google Patents
A kind of adjusting process of electric energy meter Download PDFInfo
- Publication number
- CN108008341A CN108008341A CN201711424001.9A CN201711424001A CN108008341A CN 108008341 A CN108008341 A CN 108008341A CN 201711424001 A CN201711424001 A CN 201711424001A CN 108008341 A CN108008341 A CN 108008341A
- Authority
- CN
- China
- Prior art keywords
- meter
- base table
- value
- current
- calibrated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of adjusting process of electric energy meter, which includes the steps：Step 1, a base table is selected, connection will be carried out between signal source, calibrated meter and base table；Step 2, start calibration procedures, initialization operation is carried out to the meter inside calibrated meter and computation chip, adjusts the high frequency constant of calibrated meter；Step 3, calibrated meter noise is calculated；Step 4, calibrated meter apparent energy error is adjusted；Step 5, adjustment phase place error.Relative to the prior art, the present invention need not detect the electric energy power pulse of calibrated meter, it can adjust all coefficients and offset needed for computation chip under fixed signal source, without the voltage and current signal of frequently lifting signal source, so as to eliminate the computer-aided equipment of the standard electric energy meter equipment of costliness and load, it can be used on assembly line, the simple cost of plant maintenance is low and can be with batch making.The present invention also have the advantages that quickly, it is specification, accurate.
Description
Technical field
The present invention relates to electric energy meter technical field, specifically for, the present invention is a kind of adjusting process of electric energy meter.
Background technology
At present, in the production process of electric energy meter, for ensure electric energy meter can normal use, it is exactly to electricity to have a procedure
Can table progress precision adjustment.
The adjusting process of conventional electric energy meter is：Pulse adjustment method；Specifically, pulse adjustment method is one kind according to by school
The method that the continuous pulse signal of table calculates calibrated meter error, the calibrated meter error that this method obtains must be based on the company of collection
Continuous pulse signal and a series of process flows to the pulse signal.Although this method can be relatively accurately to electric energy meter
Carry out adjustment, but often every time can only one electric energy meter of adjustment, but also there are it is complicated, cumbersome, be not easy specification, time
The long, problem such as efficiency is low, so as to cause the production efficiency of electric energy meter relatively low, it is also possible to calibration procedures draw other it is secondary therefore
Barrier.
Therefore, how effectively to solve influence of the electric energy meter calibration procedures to electric energy meter production efficiency, improve the tune of electric energy meter
School efficiency, avoid issuable secondary failure in electric energy meter calibration procedures, and it is urgently to be resolved hurrily to become those skilled in the art
Technical problem and the emphasis studied all the time.
The content of the invention
For solve the problems, such as existing for existing electric energy meter adjusting process it is complicated, cumbersome, efficiency is low etc., the present invention is innovatively
A kind of adjusting process of electric energy meter is proposed, which is based on Standardized Design flow, is realized using base table and signal source
Reliable, efficient adjustment to calibrated meter, and multiple calibrated meters can be calibrated at the same time at the same time by a base table, there is adjustment effect
The advantages that rate is high, the degree of automation is high, reliability is stronger, and efficiently solve that other are easily drawn in existing calibration procedures is secondary
The problem of failure.
To realize above-mentioned technical purpose, the invention discloses a kind of adjusting process of electric energy meter, which includes
Following steps,
Step 1, a base table is selected, will be electrically connected and communicate to connect between calibrated meter and base table；By signal source with
It is electrically connected between calibrated meter, so that signal source provides voltage source and current source, signal source, quilt for calibrated meter and base table at the same time
Calibration and base table form current loop；Wherein, the base table for by success adjustment after electric energy meter and with calibrated meter model phase
Together；
Step 2, start calibration procedures, initialization operation is carried out to the meter inside calibrated meter and computation chip, is made by school
Table enters normal operating condition；Base table reads itself meter constant and high frequency constant, and obtains the meter constant of calibrated meter, so
The high frequency constant of calibrated meter is calculated using rule of three afterwards, and the high frequency constant is write in calibrated meter；
Step 3, the current loop is disconnected, the current signal for making calibrated meter is zero；Meter is sent to calibrated meter by base table
Current noise order is calculated, calibrated meter voluntarily calculates the electric current register value and active power register value as noise, and by electricity
In stream registers value and active power register value write-in calibrated meter；
Step 4, the current loop is connected, the electric current of signal source is flowed completely through the calibrated meter and the base table, base
Table calculates apparent energy theoretical value according to current voltage value and current value, and base table obtains calibrated meter current voltage value and current value
Afterwards, apparent energy actual value is calculated；Base table is according to the apparent energy theoretical value and the apparent energy calculated with actual values apparent
Power error, then again returns to the apparent energy error in calibrated meter, write-in calibrated meter；
Step 5, base table reads the active power theoretical value of itself, and obtains the active power actual value of calibrated meter, base table
Further according to the active power theoretical value and the active power calculated with actual values phase error, then again by the phase error
Return in calibrated meter, write-in calibrated meter.
Based on above-mentioned technical solution, the present invention can preferably realize the adjustment to electric energy meter, have operating process letter
List, the degree of automation height, high safety, it is of good reliability outstanding advantages of, suitable for promoting the use of a large area.
Further, which further includes following steps,
Step 6, base table reads the standard voltage value of itself, current standard value and power standard value, and obtains calibrated meter
Voltage effective value, current effective value and power virtual value, are then calculated using the standard voltage value and the voltage effective value
Voltage conversion coefficient, using the current standard value and the current effective value calculating current conversion coefficient, utilize the power
Standard value and the power virtual value calculate power conversion coefficient；Again by the voltage conversion coefficient, the electric current conversion coefficient
And the power conversion coefficient is returned in calibrated meter, write-in calibrated meter.
Based on above-mentioned improved technical solution, the present invention can also effectively calibrate electric parameter show value, ensure
The accuracy of electric energy meter registration of dispatching from the factory, so that extreme enrichment adjusting function of the present invention to electric energy meter.
Further, in step 1, multiple calibrated meters are accessed, so that all calibrated meters of access subsequently pass through base at the same time
Table adjustment, and it is parallel with one another between different calibrated meters.
Based on above-mentioned improved technical solution, the present invention at the same time can effectively be adjusted multiple calibrated meters, so that greatly
Ground improves adjustment efficiency of the present invention to electric energy meter, it is possible to achieve the adjustment to a large amount of electric energy meters is completed in the short time.
Further, in step 1, the first relay is provided with the current loop, institute is controlled by the base table
Being switched on or switched off for the first relay is stated, the original state of first relay is connection；
In step 3, the electric current time is disconnected by way of base table sends disconnection control command to first relay
Road.
Based on above-mentioned improved technical solution, after adjustment flow starts, the present invention can complete automation adjustment by base table,
User only needs to close starting switch, and remaining adjustment flow, which can be realized, to be automatically performed, and has been simplified user's operation, has greatly been subtracted
The possibility of small user's operation error, so as to greatly increase the adjustment speed of the present invention.
Further, in step 1, further include and inputted by the current output terminal and electric current of the second relay connecting signal source
The step of end, being switched on or switched off for second relay, the original state of second relay are controlled by the base table
To disconnect；
Step 3, before the current loop is disconnected, connection control command is sent to second relay by base table
Mode signal source itself is formed current protection circuit；
In step 4, connect after the current loop and disconnection control command is sent to second relay by base table.
Based on above-mentioned improved technical solution, the present invention is cleverly set by list-directed second relay of base, is kept away
The problem of exempting from current signal source open circuit, plays the purpose in effective protection signal source, realizes recycling for signal source.
Further, in step 1, an independent double-pole single throw, the double-pole list are drawn from base table fastener switch
Throw switch has two contacts, and a contact is used to control base table to start adjustment work, another contact for controlling compression
Device action, the pressing device are used for the position for locking calibrated meter；
In step 2, start calibration procedures by way of closing the double-pole single throw, close the double-pole single-throw (D.P.S.T.)
During switch, the base table receives adjustment enabling signal, control calibration procedures start, while calibrated meter is compacted device locking.
Further, it is guarantee adjusting accuracy, in step 1 of the present invention, at rated loads and power factor is respectively
In the case of 1.0L and 0.5L, following condition is met by the base table after success adjustment：Base table error within ± 0.1%,
And voltage show value, electric current show value and active power show value are within ± 0.05%.
Further, in step 2, after calibration procedures startup, whether sensed signal sources meet specified criteria：It is if full
Foot, then carry out follow-up calibration procedures；If conditions are not met, then adjust signal source, re-execute step 2 again；Wherein, it is described given
Condition is：Voltage is within rated voltage ± 5%, and electric current is within rated current ± 0.25A, and power factor 0.5L ±
Within 0.05, and active power is forward direction.
Further, in step 1, complete enabling signal source after wiring, further include to the base table and the signal source into
The step of row preheating.
Based on above-mentioned improved technical solution, the present invention can make base table and signal source reach stable state, so as to ensure
Adjustment accuracy and adjusting accuracy.
Further, in step 2, base table detects address by way of bus communication to default each epitope：For visiting
The epitope measured, then carry out follow-up alignment step；For unresponsive epitope, then ignore the table in follow-up calibration procedures
Position, in the liquid crystal screen display error code of base table, it is bug list to illustrate the table, and is ignored in epicycle adjustment；Wherein, the quilt
Communication connection mode between calibration and the base table is RS485 buses.
Beneficial effects of the present invention are：Relative to the prior art, the present invention need not detect the electric energy power arteries and veins of calibrated meter
Punching, all coefficients and offset needed for calibrated meter computation chip is can adjust in the case where power factor is 0.5L loads point, without frequency
The voltage and current signal of numerous lifting signal source；Its significance lies in that eliminate the standard electric energy meter equipment of costliness and the computer of load
Ancillary equipment, can be used, the simple cost of plant maintenance is low and can be with batch making on assembly line.The present invention also has fast
Speed, specification, it is accurate the advantages that.
Brief description of the drawings
Fig. 1 is a kind of flow diagram of the adjusting process of electric energy meter of the present invention.
Wiring relation schematic diagrams of the Fig. 2 between calibrated meter, base table and signal source.
Embodiment
Detailed explanation and illustration is carried out to a kind of adjusting process of electric energy meter of the present invention with reference to Figure of description.
As shown in Figure 1, 2, the invention particularly discloses a kind of adjusting process of electric energy meter, what although the present embodiment provided is
Adjustment to single-phase electric energy meter, but on the basis of the disclosure of invention, this programme can be diverted to three-phase electric energy meter
Adjustment；Specifically, which includes the following steps.
Step 1, a base table with calibrated meter with money is selected, carrying out adjustment to base table with standard device (can use existing
Base table of the other methods adjustment as basis of the invention, such as by standard device and computer-assisted device to target electric energy
Table carries out adjustment, and the target electric energy meter after adjustment success can be used as base table), it will be electrically connected between calibrated meter and base table
And communication connection, in the present embodiment, multiple calibrated meters (for example 1 to 8 epitope for being used to install electric energy meter is set) are accessed, from
And make all calibrated meters of access follow-up at the same time by base table adjustment, and it is parallel with one another between different calibrated meters；By signal source
It is electrically connected between calibrated meter, so that signal source provides voltage source and current source for calibrated meter and base table at the same time, signal source,
Calibrated meter and base table form current loop, as shown in Figure 2；In the present embodiment, signal source is higher than 0.05 electricity for stability grade
Current voltage source；Wherein, base table is by the electric energy meter and identical with calibrated meter model after success adjustment；In the present embodiment, in volume
Under fixed load and in the case that power factor is respectively 1.0L and 0.5L, following bar is met by the base table after success adjustment
Part：Base table error is within ± 0.1%, and voltage show value, electric current show value and active power show value are ± 0.05%
Within (only herein load promise this precision), carrier of the base table as the present invention be of the invention for further optimization
Adjusting process, all adjustment action in calibration procedures are automatically controlled by base table, base table after various signal wires are connected just no longer
It is mobile.Moreover, preferably controlling adjustment work to start, the present invention draws an independent double-pole single-throw (D.P.S.T.) from base table fastener switch
Switch, double-pole single throw has two contacts, and a contact is used to control base table to start adjustment work, another contact use
In control pressing device action, and pressing device is used for the position for locking calibrated meter, and double-pole single throw closure then starts adjustment
Process, while also start pressing device and compress calibrated meter, calibrated meter is locked, is difficult to remove at this time, avoids calibrated meter in adjustment
During the problem of adjustment fails produced due to disengaging；Switch, which is opened, then terminates mileometer adjustment, can remove calibrated meter easily.Separately
Outside, in the present embodiment, the first relay is provided with current loop, on-off is connect by base table the first relay of control
Open, the original state of the first relay is connection；Further include the current output terminal and electricity by the second relay connecting signal source
The step of flowing input terminal, controls being switched on or switched off for the second relay, the original state of the second relay is disconnection by base table；
The automation adjustment flow of the present invention is completed by the break-make of base table first, second relay of control.
In addition, in step 1, enabling signal source after wiring is completed, further includes the step preheated to base table and signal source
Preheat 10 minutes, base table and signal source is reached stable state.
Step 2, the present invention starts calibration procedures by way of closing double-pole single throw, in closure double-pole single throw
When (starting switch is triggered), base table receives adjustment enabling signal, control calibration procedures start, while calibrated meter is compacted device
Lock, in the present embodiment, in order to improve the accuracy of adjustment and ensure the reliability of adjustment, after calibration procedures startup, inspection
Survey whether signal source meets specified criteria：If it is satisfied, then carry out follow-up calibration procedures；If conditions are not met, then adjust signal
Source, re-execute step 2 again；Wherein, specified criteria is：Voltage within rated voltage ± 5%, and electric current rated current ±
Within 0.25A, and power factor is within 0.5L ± 0.05, and active power is forward direction；Based on technical side provided by the invention
Case, the input voltage range of signal source can be very wide in range, and therefore, the present invention significantly reduces the requirement to signal source.Base table
By way of bus communication address is detected to default each epitope：Base table actively initiates the data communication of RS485 buses, for
The epitope detected, then carry out follow-up alignment step；For unresponsive epitope, then ignore the table in follow-up calibration procedures
Position, in the liquid crystal screen display error code of base table, it is bug list to illustrate the table, and is ignored in epicycle adjustment；Wherein, calibrated meter
Communication connection mode between base table is RS485 buses；As shown in Figure 1, in the present embodiment, base table detects 4 epitopes successively.
Initialization operation, specification meter and all kinds of operating parameters of computation chip are carried out by silent to the meter inside calibrated meter and computation chip
Recognize value operation, calibrated meter is entered normal operating condition；Base table reads the meter constant and high frequency constant of itself, and obtains by school
The meter constant of table, then calculates the high frequency constant of calibrated meter, specifically, high frequency constant=base of calibrated meter using rule of three
The meter constant of table high frequency constant * base tables meter constant/calibrated meter, such as, base table high frequency constant is 0x0B9A, which turns to
The decimal system is 2970, and base table meter constant is 1200imp, and calibrated meter meter constant is the high frequency constant of 2400imp, then calibrated meter
=2970*1200/2400=1485；Then base table writes high frequency constant in calibrated meter.Present invention only requires a step ratio meter
The high frequency constant that can determine that calibrated meter is calculated, is had the advantages that succinct and efficient.
Step 3, as shown in Figure 1, 2, signal source is made by way of base table sends connection control command to the second relay
Itself forms current protection circuit, then the turn-off current by way of base table sends to the first relay and to disconnect control command again
Circuit, the current signal for making calibrated meter are zero；Calculating current noise order is sent to calibrated meter by base table, calibrated meter is voluntarily counted
(existing intelligent electric energy meter has possessed automatic calculates noise work(to the electric current register value and active power register value that can be regarded as noise
Can), and by the noise register of electric current register value and active power register value write-in calibrated meter, then make in calibrated meter
Used time, removes noise in measurement process, so as to ensure the measuring accuracy of low current.Noise is exactly the survey when input signal is zero
Value, for specific a certain electric energy meter, noise is basically unchanged, it can be superimposed upon in the measurement of gamut always,
During full scale signal, the ratio very little of noise and signal, can be ignored, and when inputting low current signal, signal may be only
There is an one thousandth of full scale, the ratio value of noise and signal can be exaggerated nearly thousands of times, such as current specification 5 (60) A mono-
Phase table maximum current has 60A, and electric current is 50mA when minimum calibrating current point is 1%Ib, and signal-to-noise ratio differs 1200 times, it is sufficient to influences
To the accuracy of low current metering, so having to eliminate noise.
Step 4, turn-on current circuit, then disconnection control command is sent to the second relay by base table, circuit will be protected
Release, the electric current of signal source is flowed completely through calibrated meter and base table, base table calculates apparent work(according to current voltage value and current value
Rate theory value, apparent energy theoretical value=base table current voltage value * base table present current values, base table obtain calibrated meter current voltage
After value and current value, apparent energy actual value is calculated, apparent energy actual value=calibrated meter current voltage value * calibrated meters are currently electric
Flow valuve；Using the apparent energy theoretical value of base table as standard value, base table is according to apparent energy theoretical value and apparent energy actual value
Apparent energy error is calculated, in the present embodiment, is calculated especially by following manner：Apparent energy error=(apparent energy is actual
Value-apparent energy theoretical value)/apparent energy theoretical value, apparent energy error is then returned into calibrated meter, write-in calibrated meter again
In error correction power register.
Step 5, the present invention remains that signal source output power factor is 0.5L, and base table reads the active power reason of itself
By value, and the active power actual value of calibrated meter is obtained, because compensating already for the linearity error of power, this step in step 4
The deviation calculated is error caused by phase, and base table is further according to active power theoretical value and active power calculated with actual values phase
Error, in the present embodiment, phase error=(active power actual value-active power theoretical value)/active power theoretical value, then
The phase error is returned in calibrated meter, write-in calibrated meter register again.
Step 6, to correct each electric parameter show value, voltage, electric current, power conversion coefficient are determined.Base table reads itself
Standard voltage value, current standard value and power standard value, and obtain the voltage effective value, current effective value and power of calibrated meter
Virtual value, then calculates voltage conversion coefficient using standard voltage value and voltage effective value, has using current standard value and electric current
Valid value calculating current conversion coefficient, utilize power standard value and power virtual value calculating power conversion coefficient；Wherein, voltage conversion
Coefficient=standard voltage value/voltage effective value, electric current conversion coefficient=current standard value/current effective value, power conversion coefficient
=power standard value/power virtual value, then converts the voltage into coefficient, electric current conversion coefficient and power conversion coefficient and returns to again
In calibrated meter, write-in calibrated meter.
In specific implementation process, after above-mentioned calibration procedures, then base table sends connection control to the second relay
System order, connects protective loop, current signal source is not opened a way, with protective current signal source.The offer of the horn of plenty present invention
Technical solution, the present embodiment can also indicate adjustment as a result, for example by base table acousto-optic, when all correct adjustment of all calibrated meters
By when, base table buzzer ring a long sound, about 2 seconds, while base table liquid crystal display show 55.55.55.55,55 represent corresponding tables
Position adjustment success；Otherwise 3 short sound are rung, that is, rings 0.6 second and stops 0.6 second, 3 times in this way, the successful epitope of adjustment shows 55, other epitopes
Show other count values, wait the electric energy meter to be removed by adjustment, liquid crystal display is always maintained at starting switch reset.
In addition, term " first ", " second " are only used for description purpose, and it is not intended that instruction or hint relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, " multiple " are meant that at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integrally；Can be that machinery connects
Connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, can be in two elements
The connection in portion or the interaction relationship of two elements, unless otherwise restricted clearly.For those of ordinary skill in the art
For, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the description of this specification, reference term " the present embodiment ", " one embodiment ", " some embodiments ", " show
The description of example ", " specific example " or " some examples " etc. mean to combine the specific features of the embodiment or example description, structure,
Material or feature are contained at least one embodiment of the present invention or example.In the present specification, above-mentioned term is shown
The statement of meaning property is necessarily directed to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other,
Those skilled in the art can be by the different embodiments or example described in this specification and different embodiments or exemplary
Feature is combined and combines.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Any modification, equivalent substitution and simple modifications for being made in content etc., should all be included in the protection scope of the present invention.
Claims (10)
- A kind of 1. adjusting process of electric energy meter, it is characterised in that：The adjusting process includes the following steps,Step 1, a base table is selected, will be electrically connected and communicate to connect between calibrated meter and base table；By signal source and by school It is electrically connected between table, so that signal source provides voltage source and current source, signal source, calibrated meter for calibrated meter and base table at the same time And base table forms current loop；Wherein, the base table is by the electric energy meter and identical with calibrated meter model after success adjustment；Step 2, start calibration procedures, initialization operation carried out to the meter inside calibrated meter and computation chip, make calibrated meter into Enter normal operating condition；Base table reads itself meter constant and high frequency constant, and obtains the meter constant of calibrated meter, then adopts The high frequency constant of calibrated meter is calculated with rule of three, and the high frequency constant is write in calibrated meter；Step 3, the current loop is disconnected, the current signal for making calibrated meter is zero；Calculating electricity is sent to calibrated meter by base table Flow noise order, calibrated meter voluntarily calculates the electric current register value and active power register value as noise, and electric current is posted In storage value and active power register value write-in calibrated meter；Step 4, the current loop is connected, the electric current of signal source is flowed completely through the calibrated meter and the base table, base table root According to current voltage value and current value calculating apparent energy theoretical value, after base table acquisition calibrated meter current voltage value and current value, count Calculate apparent energy actual value；Base table is missed according to the apparent energy theoretical value and the apparent energy calculated with actual values apparent energy Difference, then again returns to the apparent energy error in calibrated meter, write-in calibrated meter；Step 5, base table reads the active power theoretical value of itself, and obtains the active power actual value of calibrated meter, base table root again According to the active power theoretical value and the active power calculated with actual values phase error, then the phase error is returned again To in calibrated meter, write-in calibrated meter.
- 2. the adjusting process of electric energy meter according to claim 1, it is characterised in that：The adjusting process further includes following step Suddenly,Step 6, base table reads the standard voltage value of itself, current standard value and power standard value, and obtains the voltage of calibrated meter Virtual value, current effective value and power virtual value, then calculate voltage using the standard voltage value and the voltage effective value Conversion coefficient, using the current standard value and the current effective value calculating current conversion coefficient, utilize the power standard Value and the power virtual value calculate power conversion coefficient；Again by the voltage conversion coefficient, the electric current conversion coefficient and institute Power conversion coefficient is stated to return in calibrated meter, write-in calibrated meter.
- 3. the adjusting process of electric energy meter according to claim 2, it is characterised in that：In step 1, multiple calibrated meters are accessed, so that all calibrated meters of access are follow-up at the same time by base table adjustment, and it is different Calibrated meter between it is parallel with one another.
- 4. the adjusting process of the electric energy meter according to any claim in claims 1 to 3, it is characterised in that：In step 1, the first relay is provided with the current loop, first relay is controlled by the base table It is switched on or switched off, the original state of first relay is connection；In step 3, the current loop is disconnected by way of base table sends disconnection control command to first relay.
- 5. the adjusting process of electric energy meter according to claim 4, it is characterised in that：In step 1, the step of further including the current output terminal and current input terminal by the second relay connecting signal source, pass through The base table controls being switched on or switched off for second relay, and the original state of second relay is disconnection；Step 3, before the current loop is disconnected, the side for connecting control command is sent to second relay by base table Formula makes signal source itself form current protection circuit；In step 4, connect after the current loop and disconnection control command is sent to second relay by base table.
- 6. the adjusting process of electric energy meter according to claim 5, it is characterised in that：In step 1, an independent double-pole single throw is drawn from base table fastener switch, the double-pole single throw has two Contact, and a contact is used to control base table to start adjustment work, another contact for controlling pressing device to act, the pressure Tight device is used for the position for locking calibrated meter；In step 2, start calibration procedures by way of closing the double-pole single throw, close the double-pole single throw When, the base table receives adjustment enabling signal, control calibration procedures start, while calibrated meter is compacted device locking.
- 7. the adjusting process of electric energy meter according to claim 6, it is characterised in that：In step 1, at rated loads and in the case that power factor is respectively 1.0L and 0.5L, by the base after success adjustment Table meets following condition：Base table error is within ± 0.1%, and voltage show value, electric current show value and active power are shown Value is within ± 0.05%.
- 8. the adjusting process of electric energy meter according to claim 7, it is characterised in that：In step 2, after calibration procedures startup, whether sensed signal sources meet specified criteria：If it is satisfied, then carry out follow-up Calibration procedures；If conditions are not met, then adjust signal source, re-execute step 2 again；Wherein, the specified criteria is：Voltage is in volume Within constant voltage ± 5%, and electric current is within rated current ± 0.25A, and power factor is within 0.5L ± 0.05, and active Power is forward direction.
- 9. the adjusting process of electric energy meter according to claim 8, it is characterised in that：In step 1, enabling signal source after wiring is completed, further includes the step of being preheated to the base table and the signal source.
- 10. the adjusting process of the electric energy meter according to claim 3 or 9, it is characterised in that：In step 2, base table detects address by way of bus communication to default each epitope：For the epitope detected, then Carry out follow-up alignment step；For unresponsive epitope, then ignore the epitope in follow-up calibration procedures, in the liquid crystal of base table Screen display error code, it is bug list to illustrate the table, and is ignored in epicycle adjustment；Wherein, the calibrated meter and the base table Between communication connection mode be RS485 buses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424001.9A CN108008341A (en) | 2017-12-25 | 2017-12-25 | A kind of adjusting process of electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711424001.9A CN108008341A (en) | 2017-12-25 | 2017-12-25 | A kind of adjusting process of electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108008341A true CN108008341A (en) | 2018-05-08 |
Family
ID=62061291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711424001.9A Pending CN108008341A (en) | 2017-12-25 | 2017-12-25 | A kind of adjusting process of electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108008341A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061546A (en) * | 2018-09-28 | 2018-12-21 | 广东雅达电子股份有限公司 | A kind of auto-adjustment device and method for electronic electric energy meter |
| CN110398710A (en) * | 2019-07-30 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of electric energy gauging method and system based on error self diagnosis |
| CN110471021A (en) * | 2018-05-10 | 2019-11-19 | 宁夏隆基宁光仪表股份有限公司 | A kind of electric energy meter calibrating apparatus and method with built-in monitoring base table |
| CN110488217A (en) * | 2019-08-23 | 2019-11-22 | 宁波迦南智能电气股份有限公司 | A kind of mutual detecting method of multilist of electric energy meter measuring accuracy |
| CN111175575A (en) * | 2020-01-07 | 2020-05-19 | 宁波市计量测试研究院（宁波市衡器管理所、宁波新材料检验检测中心） | Method for improving power factor angle measurement precision of standard electric energy meter |
| CN111596252A (en) * | 2019-08-02 | 2020-08-28 | 杭州尚能科技有限公司 | Error calibration method for multi-phase far infrared electric energy meter |
| CN112098923A (en) * | 2020-09-28 | 2020-12-18 | 怀化建南机器厂有限公司 | Smart electric meter calibration method and device |
| CN112213684A (en) * | 2020-06-02 | 2021-01-12 | 青岛鼎信通讯股份有限公司 | Power compensation mechanism based on voltage influence for electric energy meter |
| CN112230179A (en) * | 2020-05-06 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | MSP430F 47187-based calibration method |
| CN112782470A (en) * | 2020-12-14 | 2021-05-11 | 浙江恒业电子有限公司 | Method and system for improving metering precision of three-phase cost control intelligent electric meter based on MCU |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087352A (en) * | 2011-01-31 | 2011-06-08 | 浙江省电力公司 | Three-phase intelligent watt-hour meter inspection device and method |
| CN102590784A (en) * | 2012-03-14 | 2012-07-18 | 沈阳时尚实业有限公司 | Single-phase intelligent energy meter distributed correction method |
| CN104035062A (en) * | 2014-07-03 | 2014-09-10 | 国家电网公司 | High-precision calibration method based on ATT7022E metering chip |
| CN104215931A (en) * | 2014-10-10 | 2014-12-17 | 国家电网公司 | Automatic electric energy meter calibrating device period investigation method |
| CN105242233A (en) * | 2015-10-21 | 2016-01-13 | 宁波三星医疗电气股份有限公司 | Fast calibration method of single-phase electric energy meter |
| CN105425194A (en) * | 2014-09-09 | 2016-03-23 | 浙江万胜电力仪表有限公司 | Method of setting pulse constant of electric instrument |
| CN106501759A (en) * | 2016-12-08 | 2017-03-15 | 浙江晨泰科技股份有限公司 | A kind of single-phase electric energy meter production line automation correction method |
-
2017
- 2017-12-25 CN CN201711424001.9A patent/CN108008341A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102087352A (en) * | 2011-01-31 | 2011-06-08 | 浙江省电力公司 | Three-phase intelligent watt-hour meter inspection device and method |
| CN102590784A (en) * | 2012-03-14 | 2012-07-18 | 沈阳时尚实业有限公司 | Single-phase intelligent energy meter distributed correction method |
| CN104035062A (en) * | 2014-07-03 | 2014-09-10 | 国家电网公司 | High-precision calibration method based on ATT7022E metering chip |
| CN105425194A (en) * | 2014-09-09 | 2016-03-23 | 浙江万胜电力仪表有限公司 | Method of setting pulse constant of electric instrument |
| CN104215931A (en) * | 2014-10-10 | 2014-12-17 | 国家电网公司 | Automatic electric energy meter calibrating device period investigation method |
| CN105242233A (en) * | 2015-10-21 | 2016-01-13 | 宁波三星医疗电气股份有限公司 | Fast calibration method of single-phase electric energy meter |
| CN106501759A (en) * | 2016-12-08 | 2017-03-15 | 浙江晨泰科技股份有限公司 | A kind of single-phase electric energy meter production line automation correction method |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110471021A (en) * | 2018-05-10 | 2019-11-19 | 宁夏隆基宁光仪表股份有限公司 | A kind of electric energy meter calibrating apparatus and method with built-in monitoring base table |
| CN109061546A (en) * | 2018-09-28 | 2018-12-21 | 广东雅达电子股份有限公司 | A kind of auto-adjustment device and method for electronic electric energy meter |
| CN110398710A (en) * | 2019-07-30 | 2019-11-01 | 中国电力科学研究院有限公司 | A kind of electric energy gauging method and system based on error self diagnosis |
| CN110398710B (en) * | 2019-07-30 | 2022-12-13 | 中国电力科学研究院有限公司 | Electric energy metering method and system based on error self-diagnosis |
| CN111596252A (en) * | 2019-08-02 | 2020-08-28 | 杭州尚能科技有限公司 | Error calibration method for multi-phase far infrared electric energy meter |
| CN110488217A (en) * | 2019-08-23 | 2019-11-22 | 宁波迦南智能电气股份有限公司 | A kind of mutual detecting method of multilist of electric energy meter measuring accuracy |
| CN110488217B (en) * | 2019-08-23 | 2021-06-22 | 宁波迦南智能电气股份有限公司 | Multi-meter mutual detection method for metering accuracy of electric energy meter |
| CN111175575A (en) * | 2020-01-07 | 2020-05-19 | 宁波市计量测试研究院（宁波市衡器管理所、宁波新材料检验检测中心） | Method for improving power factor angle measurement precision of standard electric energy meter |
| CN112230179A (en) * | 2020-05-06 | 2021-01-15 | 青岛鼎信通讯股份有限公司 | MSP430F 47187-based calibration method |
| CN112213684A (en) * | 2020-06-02 | 2021-01-12 | 青岛鼎信通讯股份有限公司 | Power compensation mechanism based on voltage influence for electric energy meter |
| CN112098923A (en) * | 2020-09-28 | 2020-12-18 | 怀化建南机器厂有限公司 | Smart electric meter calibration method and device |
| CN112782470A (en) * | 2020-12-14 | 2021-05-11 | 浙江恒业电子有限公司 | Method and system for improving metering precision of three-phase cost control intelligent electric meter based on MCU |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108008341A (en) | A kind of adjusting process of electric energy meter | |
| CN102967742B (en) | The electric mutual inductor of wide current detection range | |
| WO2020133796A1 (en) | Plc control-based full-automatic batch current transformer verification device | |
| US5737730A (en) | Measuring process for measuring chargeable electrical consumption from an electrical network and electronic electricity meter | |
| CN101141134A (en) | Software compensation method of radio frequency module performance and improved radio frequency module | |
| US8321162B2 (en) | Minimizing circulating current using time-aligned data | |
| CN104569897B (en) | A kind of electronic current mutual inductor check system based on standard Rogowski coil | |
| Sreedevi et al. | Development of indigenous smart energy meter adhering Indian standards for smart grid | |
| CN102170091A (en) | Laser power correcting method | |
| US11515711B2 (en) | Grid interconnection device and server | |
| CN105911501A (en) | 220kV voltage transformer intelligence error verification system | |
| US9459596B2 (en) | Fault tolerant service switch operation in a utility meter | |
| CN103809010A (en) | Device and method for determining voltage and power of each phase of medium-voltage network | |
| CN103728493A (en) | Multi-path single-phase and three-phase mixed electric energy metering device and method | |
| KR100652240B1 (en) | Apparatus for automatically controlling a power factor | |
| CN109001580A (en) | A kind of generator intelligent electric amount pick-up device | |
| CN102411134B (en) | Variable frequency calibration device for load box of mutual inductor | |
| CN205826850U (en) | A kind of 220KV voltage transformer intellectuality error testing system | |
| CN102129032B (en) | Transformer on-load tapping switch tester | |
| CN105068033B (en) | The calibration equipment and its method of a kind of The Rogowski Optical Current Transformer | |
| CN101350643A (en) | Method for compensating RF module performance and improved RF module | |
| CN113506710A (en) | Intelligent circuit breaker body and intelligent circuit breaker device | |
| CN111045369A (en) | Auxiliary control circuit of power amplifier module, power amplifier module and communication equipment | |
| CN203025313U (en) | High-voltage variable-frequency series resonance test power supply | |
| CN110471017A (en) | Power standard source, metering chip and metering device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180508 |
|
| RJ01 | Rejection of invention patent application after publication |