CN109239640A - Ammeter clock correction method based on mean difference - Google Patents
Ammeter clock correction method based on mean difference Download PDFInfo
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- CN109239640A CN109239640A CN201810723413.0A CN201810723413A CN109239640A CN 109239640 A CN109239640 A CN 109239640A CN 201810723413 A CN201810723413 A CN 201810723413A CN 109239640 A CN109239640 A CN 109239640A
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- 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
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R40/00—Correcting the clock frequency
- G04R40/06—Correcting the clock frequency by computing the time value implied by the radio signal
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- Engineering & Computer Science (AREA)
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- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The present invention provides the ammeter clock correction methods based on mean difference, belong to time calibration field, including carrying out networking to the ammeter group including target ammeter, obtain network when ammeter school；Ammeter error amount when timing extraction ammeter school in network seeks the mean difference of whole ammeter error amounts；When obtaining ammeter school in network whole ammeter types factory error mean, obtain calibration mean value in conjunction with mean difference；Calibration mean value is broadcasted in network at ammeter school.By carrying out average value solutions based on ammeter error currents whole in network, in the hope of average value the ammeter in the whole network is calibrated as calibrator quantity.Since the step of extracting ammeter error amount is clocked flip, therefore it can be effectively reduced the error of ammeter in the whole network by successive ignition operation, error after reduction is calibrated to the whole network ammeter, the ammeter in the whole network can be enabled to be in the lesser state of error, the accuracy of clock in ammeter of effectively deducting a percentage.
Description
Technical field
The invention belongs to time calibration fields, in particular to the ammeter clock correction method based on mean difference.
Background technique
Real-time clock (Real-Time Clock, RTC) plays an important role in intelligent electric meter, be remote centralized meter-reading,
The business such as expense keyholed back plate reason, line loss detection provide accurately time guarantee.According to the skill of the intelligent electric energy meter of State Grid Corporation of China
Art code requirement, for clock accuracy within ± 0.5s/d, error is less than 5ppm, the daily timing error in temperature range of operation
Less than 1s.If error is greater than this value, block meter rate or the exceeded electricity data generated in the process to electric energy will be inaccurate, by
This bring error all may cause biggish loss to user or power supply unit,
Common clock synchronization mode has IRIG-B code clock synchronization, IEEE1588 Precision Time Protocol and SNIP simple in current electric grid
Network Time Protocol.IRIG-B code clock synchronization needs independent setting network, and IEEE1588 clock synchronization requires equipment Ethernet chip hardware
The generation that can support timestamp needs to purchase or extend existing functions of the equipments again.The above scheme requires separately
Outer configuration hardware device, cost is excessively high, is not suitable for the transformation to current electric grid.
Summary of the invention
In order to solve shortcoming and defect existing in the prior art, the present invention provides the ammeter clocks based on mean difference
Bearing calibration, for improving the accuracy of ammeter internal clock.
It is described the present invention provides the ammeter clock correction method based on mean difference in order to reach above-mentioned technical purpose
Ammeter clock correction method, comprising:
Networking is carried out to the ammeter group including target ammeter, obtains network when ammeter school；
Ammeter error amount when timing extraction ammeter school in network seeks the mean difference of whole ammeter error amounts；
When obtaining ammeter school in network whole ammeter types factory error mean, it is equal to obtain calibration in conjunction with mean difference
Value；
Calibration mean value is broadcasted in network at ammeter school, enables the ammeter that receives based on calibration mean value to itself clock
It is calibrated.
Optionally, the described couple of ammeter group including target ammeter carries out networking, obtains network when ammeter school, comprising:
Target ammeter is enabled wirelessly to broadcast target device coding；
Ammeter in broadcast radiation region stores the target device received coding, and broadcast is compiled comprising target device
Replying message including code, equipment of itself coding and current time；
Target ammeter and the ammeter that replies message of transmission is enabled to be constructed as network when ammeter school, it is every in network when ammeter school
Communication connection is established between a ammeter.
Optionally, the ammeter error amount when timing extraction ammeter school in network seeks the flat of whole ammeter error amounts
Equal difference, comprising:
On the basis of the current time of target ammeter, according to receive reply message in current time determine each sample
The ammeter error amount of this ammeter；
Based on the whole ammeter error amounts received, the mean difference for representing ammeter clock mean error is sought.
Optionally, in network when obtaining ammeter school whole ammeter types factory error mean, in conjunction with mean difference
Obtain calibration mean value, comprising:
From each ammeter equipment of itself coding of middle reading is replied message, corresponding ammeter type is determined based on equipment of itself coding
Number；
The factory error mean for obtaining each ammeter model is chosen minimum value from factory error mean and is asked with mean difference
With, obtain calibration mean value.
Optionally, the factory error mean for obtaining each ammeter model, comprising:
Factory error mean is read from the specification or exfactory inspection list of ammeter.
Technical solution provided by the invention has the benefit that
By carrying out average value solutions based on ammeter error currents whole in network, in the hope of average value as calibrator quantity
Ammeter in the whole network is calibrated.Since the step of extracting ammeter error amount is clocked flip, grasped by successive ignition
The error that can be effectively reduced ammeter in the whole network, the error after reduction are calibrated to the whole network ammeter, can be enabled in the whole network
Ammeter be in the lesser state of error, effectively deduct a percentage ammeter in clock accuracy.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical solution of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of the ammeter clock correction method provided by the invention based on mean difference.
Specific embodiment
To keep structure and advantage of the invention clearer, structure of the invention is made further below in conjunction with attached drawing
Description.
Embodiment one
The present invention provides the ammeter clock correction methods based on mean difference, as shown in Figure 1, the ammeter clock correction
Method, comprising:
11, networking is carried out to the ammeter group including target ammeter, obtains network when ammeter school；
12, ammeter error amount when timing extraction ammeter school in network seeks the mean difference of whole ammeter error amounts；
13, when obtaining ammeter school in network whole ammeter types factory error mean, calibrated in conjunction with mean difference
Mean value；
14, calibration mean value is broadcasted in network at ammeter school, enable the ammeter that receives based on calibration mean value to itself
Clock is calibrated.
In an implementation, in order to realize the calibration to ammeter internal clock, the present embodiment proposes a kind of based on to ammeter progress
Networking, and then the method for carrying out the whole network meter calibration based on ammeter average error whole in power grid, due to after networking in network
Ammeter is large number of, therefore carries out average value solutions based on ammeter error currents whole in network, in the hope of average value conduct
Calibrator quantity calibrates the ammeter in the whole network.Since the step of extracting ammeter error amount is clocked flip, by multiple
Iterative operation can be effectively reduced the error of ammeter in the whole network, and the error after reduction is calibrated to the whole network ammeter, Neng Gouling
Ammeter in the whole network is in the lesser state of error, the accuracy of clock in ammeter of effectively deducting a percentage.
Specifically, networking step of the step 11 for network when executing ammeter school, specifically:
111, target ammeter is enabled wirelessly to broadcast target device coding；
112, the ammeter in broadcast radiation region stores the target device received coding, and broadcast is set comprising target
Replying message including standby coding, equipment of itself coding and current time；
113, target ammeter and the ammeter that replies message of transmission is enabled to be constructed as network when ammeter school, when ammeter school in network
Each ammeter between establish communication connection.
In an implementation, network when why establishing ammeter school, in order to large number of ammeter is obtained as far as possible, into
And it is chosen from these ammeters and needs most the ammeter being calibrated.
Mean difference when specific step 12 is used to obtain ammeter school in network, specifically:
121, on the basis of the current time of target ammeter, according to receive reply message in current time determine it is every
The ammeter error amount of a sample ammeter；
122, based on the whole ammeter error amounts received, the mean difference for representing ammeter clock mean error is sought
Value.
Network when in an implementation, based on the ammeter school constructed in abovementioned steps 11, after success networking, target ammeter can
It is collected into the current time of remaining ammeter in network.Intrinsic transmission on the basis of the time, when being superimposed ammeter school in network
It is poor that result and target ammeter after delay are made at the time of receiving return information, can obtain ammeter existing for each sample ammeter
Error amount.
Then the average of whole ammeter error amounts is sought based on ammeter error amount corresponding with each sample ammeter,
Obtain representing the mean difference of ammeter clock mean error.
Specific step 13 calibrates mean value for obtaining, specifically:
131, from each ammeter equipment of itself coding of middle reading is replied message, corresponding electricity is determined based on equipment of itself coding
Phenotype number；
132, the factory error mean for obtaining each ammeter model chooses minimum value and mean difference from factory error mean
Value summation obtains calibration mean value.
In an implementation, in order to improve the accuracy to ammeter clock alignment, mean difference is being determined according to return information
On the basis of also according to ammeter school when network in each ammeter model different the step of obtaining ammeters factory error mean.
The acquisition of factory error mean is according to itself setting in the return information in the meter calibration network hereinbefore referred to
Standby coding, encodes to obtain the corresponding factory error mean of each ammeter with reference to the equipment of itself of each ammeter.
In view of under prior art standard, the factory error of the even ammeter of different model is not much different, therefore is
Promotion calibration efficiency, directly choose in whole error means of acquisition minimum value, and by minimum value with hereinbefore propose
Mean difference summation, obtains the calibration mean value for calibration.
At the ammeter school set up in network, by target ammeter broadcast calibration mean value, so that other ammeters are according to reception
To calibration mean value itself is calibrated, complete reduce itself clocking error effect.
Optionally, the factory error mean for obtaining each ammeter model, comprising:
Factory error mean is read from the specification or exfactory inspection list of ammeter.
The present invention provides the ammeter clock correction methods based on mean difference, including to the electricity including target ammeter
Table group carries out networking, obtains network when ammeter school；Ammeter error amount when timing extraction ammeter school in network, seeks whole ammeters
The mean difference of error amount；When obtaining ammeter school in network whole ammeter types factory error mean, obtained in conjunction with mean difference
To calibration mean value；Calibration mean value is broadcasted in network at ammeter school, enable the ammeter that receives based on calibration mean value to itself
Clock is calibrated.By carrying out average value solutions based on ammeter error currents whole in network, in the hope of average value conduct
Calibrator quantity calibrates the ammeter in the whole network.Since the step of extracting ammeter error amount is clocked flip, by multiple
Iterative operation can be effectively reduced the error of ammeter in the whole network, and the error after reduction is calibrated to the whole network ammeter, Neng Gouling
Ammeter in the whole network is in the lesser state of error, the accuracy of clock in ammeter of effectively deducting a percentage.
Each serial number in above-described embodiment is for illustration only, the assembling for not representing each component or the elder generation in use process
Sequence afterwards.
The above description is only an embodiment of the present invention, is not intended to limit the invention, all in the spirit and principles in the present invention
Within, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (5)
1. the ammeter clock correction method based on mean difference, which is characterized in that the ammeter clock correction method, comprising:
Networking is carried out to the ammeter group including target ammeter, obtains network when ammeter school；
Ammeter error amount when timing extraction ammeter school in network seeks the mean difference of whole ammeter error amounts；
When obtaining ammeter school in network whole ammeter types factory error mean, obtain calibration mean value in conjunction with mean difference；
Calibration mean value is broadcasted in network at ammeter school, the ammeter received is enabled to carry out based on clock of the calibration mean value to itself
Calibration.
2. the ammeter clock correction method according to claim 1 based on mean difference, which is characterized in that described pair includes
Ammeter group including target ammeter carries out networking, obtains network when ammeter school, comprising:
Target ammeter is enabled wirelessly to broadcast target device coding；
Ammeter in broadcast radiation region stores the target device received coding, broadcast comprising target device coding,
Replying message including equipment of itself coding and current time；
Target ammeter and the ammeter that replies message of transmission is enabled to be constructed as network when ammeter school, each electricity when ammeter school in network
Communication connection is established between table.
3. the ammeter clock correction method according to claim 1 based on mean difference, which is characterized in that the timing mentions
Ammeter error amount when taking ammeter school in network seeks the mean difference of whole ammeter error amounts, comprising:
On the basis of the current time of target ammeter, according to receive reply message in current time determine each sample electricity
The ammeter error amount of table；
Based on the whole ammeter error amounts received, the mean difference for representing ammeter clock mean error is sought.
4. the ammeter clock correction method according to claim 2 based on mean difference, which is characterized in that the acquisition electricity
When table school in network whole ammeter types factory error mean, obtain calibration mean value in conjunction with mean difference, comprising:
From each ammeter equipment of itself coding of middle reading is replied message, corresponding ammeter model is determined based on equipment of itself coding；
The factory error mean for obtaining each ammeter model, chooses minimum value from factory error mean and mean difference is summed,
Obtain calibration mean value.
5. the ammeter clock correction method according to claim 4 based on mean difference, which is characterized in that described to obtain often
The factory error mean of a ammeter model, comprising:
Factory error mean is read from the specification or exfactory inspection list of ammeter.
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| CN201810723413.0A CN109239640B (en) | 2018-07-04 | 2018-07-04 | Electric meter clock correction method based on average difference value |
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|---|---|---|---|
| CN201810723413.0A CN109239640B (en) | 2018-07-04 | 2018-07-04 | Electric meter clock correction method based on average difference value |
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| CN109239640B CN109239640B (en) | 2021-12-10 |
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Cited By (5)
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| CN111289943A (en) * | 2020-02-28 | 2020-06-16 | 深圳市科陆精密仪器有限公司 | Electric energy meter calibration method and system |
| CN111796235A (en) * | 2020-06-28 | 2020-10-20 | 司浩天 | Assessment method for gateway table with high utilization rate |
| CN113093510A (en) * | 2021-02-26 | 2021-07-09 | 山东师范大学 | Clock frequency signal error measuring instrument and method |
| CN113108825A (en) * | 2021-03-26 | 2021-07-13 | 山东师范大学 | Atomic clock error measurement and correction method and error measurement and correction instrument |
| CN113271171A (en) * | 2021-05-14 | 2021-08-17 | 四川虹美智能科技有限公司 | Time calibration method, device and computer readable medium |
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| CN111796235A (en) * | 2020-06-28 | 2020-10-20 | 司浩天 | Assessment method for gateway table with high utilization rate |
| CN111796235B (en) * | 2020-06-28 | 2022-10-14 | 司浩天 | Assessment method for gateway table with high utilization rate |
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| CN113271171A (en) * | 2021-05-14 | 2021-08-17 | 四川虹美智能科技有限公司 | Time calibration method, device and computer readable medium |
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Effective date of registration: 20230710 Address after: No. 8, Guangji Road, Jinping Street, Fenghua District, Ningbo City, Zhejiang Province 315500 Patentee after: State Grid Zhejiang Electric Power Co., Ltd. Ningbo Fenghua district power supply Co. Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. NINGBO POWER SUPPLY Co. Address before: 315500 Guangji Road, Jinping street, Fenghua District, Ningbo City, Zhejiang Province Patentee before: STATE GRID ZHEJIANG NINGBO FENGHUA POWER SUPPLY Co.,Ltd. Patentee before: STATE GRID ZHEJIANG ELECTRIC POWER CO., LTD. NINGBO POWER SUPPLY Co. |
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