CN102455420A - Method for correcting electric energy meter on site - Google Patents
Method for correcting electric energy meter on site Download PDFInfo
- Publication number
- CN102455420A CN102455420A CN2010105274601A CN201010527460A CN102455420A CN 102455420 A CN102455420 A CN 102455420A CN 2010105274601 A CN2010105274601 A CN 2010105274601A CN 201010527460 A CN201010527460 A CN 201010527460A CN 102455420 A CN102455420 A CN 102455420A
- Authority
- CN
- China
- Prior art keywords
- error
- watch
- counting
- meter
- corrected
- 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
Images
Abstract
The invention relates to a method for correcting an electric energy meter on site. The scheme is as follows: a digital watch, two counter accessories, an isolated transformer and a current booster are selected, and the digital watch is a standard watch after being verified to be qualified; a standard watch is connected in series with a corrected watch, and the standard watch and the corrected watch get the same voltage and the same current; two counters are used for recording the number of pulses or dial plate revolution; and through the line connection, the counter counts normally so as to carry out error calculation; according to the operating principle of an electric meter, under the normal condition, the counting of the two counters is uniform, if the counting is different, the difference is the error of two counters; and the error can be calculated through the following formulas: the digital watch error={(counting2*6400/counting1*corrected watch pulse)-1}*100%+basic error, the mechanical watch error={(recording circles*6400/counting1*corrected watch dial plate revolution)-1}*100%+basic error, wherein the counting 1 indicates the standard watch and the counting 2 indicates the corrected watch. The watch counting error is judged through the measures.
Description
Technical field
The present invention relates to a kind of electric energy meter field proofreading method.
Background technology
Through after the upgrading of rural power grids, the 0.4kv line loss obviously descends, but sees that from ruuning situation in recent years line loss rebounds to some extent.By analysis, we think that low-voltage customer table meter has surpassed the wheel school time limit after the upgrading of rural power grids, and without the third wheel school, the table meter is inaccurate, are one of reasons of raising of line loss.If will show the meter complete removal to my First Astronautic Research Institute for Measurement and Test of company wheel school, the wheel gyp that nearly 200,000 tables in the whole county are counted does, and workload will be very big, and the wheel school cycle is long, and influences user's power supply reliability, and we determine a kind of electric energy meter field correction instrument of exploitation through research for this reason.
We investigate two public districts of certain power supply station, and 1-3 month line loss per unit was following with table meter wheel school qualification rate in 2006:
1-3 month line loss counting rate meter meter sampling observation qualification rate
Unit platform realm name is claimed
(％) (％)
Certain power supply station Xiao Zhuan platform district 14.65 82
Certain power supply station Yan South Platform district 15.6 88
The line loss that can find out two platform districts from last table is higher, and table meter wheel school qualification rate is low.Though more than two platform districts through the upgrading of rural power gridss, the table meter had not been taken turns the school.Table meter error is one of major reason that influences line loss.
Summary of the invention
If we think that table meter qualification rate problem does not solve by inquiry, are to influence the key factor that our full company management target is accomplished.For convenient, accomplish table meter wheel school accurately and rapidly, and the purpose of the saving cost that plays, we are with the exploitation of the electric energy meter field correction instrument target as us.
This scheme comprises: select an electronic watch, two cover counter accessories, isolating transformer and current lifting device for use, it is qualified in standard scale that electronic watch will pass through verification.A standard scale and calibrated meter are serially connected, get identical voltage, same current.Adopt two counters to note down umber of pulse or dish revolution respectively.Connect through circuit, realize the normal counting statistics of counter, so that carry out Error Calculation.Based on the kilowatt-hour meter operation principle, under the normal condition, having good luck of two table meters should be consistent.If inconsistent, promptly be the error of two tables.Error can be passed through computes: electronic watch error={ (counting 2*6400/ counting 1* calibrated meter umber of pulse)-1}*100%+ fundamental error.Stem-winder error={ (meter record number of turns * 6400/ counting 1* calibrated meter dish revolution)-1}*100%+ fundamental error.Wherein count 1 and refer to standard scale, counting 2 refers to calibrated meter.Judge table meter error through above measure.
The target feasibility analysis is following: I adopt the comparison of sampling of a standard scale meter and two counters (1).In environment of the same race, carry out data acquisition, can guarantee that the result is accurate, and safe and convenient to use.(2) this product development cost is cheap.Can produce about 500 yuan of every cost in a large number.(3) company leader's support and playing an active part in of the personnel of group are arranged, our target can realize fully.
Description of drawings
Fig. 1 is table meter source of error analysis chart
Embodiment
Purchase an electronic watch, two cover counter accessories, isolating transformer and current lifting device, it is qualified in standard scale that electronic watch will pass through verification.A standard scale and calibrated meter are serially connected, get identical voltage, same current.Adopt two counters to note down umber of pulse or dish revolution respectively.Connect through circuit, realize the normal counting statistics of counter, so that carry out Error Calculation.Based on the kilowatt-hour meter operation principle, under the normal condition, having good luck of two table meters should be consistent.If inconsistent, promptly be the error of two tables.Error can be passed through computes: electronic watch error={ (counting 2*6400/ counting 1* calibrated meter umber of pulse)-1}*100%+ fundamental error.Stem-winder error={ (meter record number of turns * 6400/ counting 1* calibrated meter dish revolution)-1}*100%+ fundamental error.Wherein count 1 and refer to standard scale, counting 2 refers to calibrated meter.Judge table meter error through above measure.
The effect inspection
We have developed five electric energy meter field correction instruments according to above-mentioned principle, and certain district's low-voltage customer table meter is carried out field-checking, send the defective table meter of field-checking back to the First Astronautic Research Institute for Measurement and Test and heavily examine, and Error Calculation is basically identical as a result.Error result contrasts as follows:
Table meter error result contrast table
| Table meter sequence number | On-the-spot correction instrument error result % | The collation % of the First Astronautic Research Institute for Measurement and Test |
| 1 | 43.0 | 42.6 |
| 2 | 5.0 | 4.8 |
| 3 | 8.0 | 7.6 |
| 4 | 4.0 | 4.3 |
| 5 | 25.0 | 25.4 |
| 6 | 38.0 | 37.7 |
| 7 | 3.0 | 2.5 |
6, consolidate measure and next step plan
The high line loss platform of part becomes after the table meter is taken turns the school after a while, and line loss per unit obviously descends.We determine to continue to produce this product.Reach two electric energy meter correction instruments of each power supply station, the final wheel school low-pressure meter meter comprehensively of realizing is for company realizes that operations objective lay the foundation.
The problem that the low-pressure meter meter exists can be fully found through the utilization of this product, and the stealing of table meter can be effectively prevented.This product is safe in utilization, convenient, with low cost, can promote the use of on a large scale.
Although the present invention here specifically describes in conjunction with the specific embodiments; But it is understandable that this is illustration rather than restriction; Under the prerequisite of the spirit of the present invention that does not break away from accessory claim and limited; In the scope of and accompanying drawing disclosed at preamble, it all is possible reasonably changing and revising.
Claims (1)
1. electric energy meter field proofreading method, this method comprises: select an electronic watch, two cover counter accessories, isolating transformer and current lifting device for use, it is qualified in standard scale that electronic watch will pass through verification; A standard scale and calibrated meter are serially connected, get identical voltage, same current; Adopt two counters to note down umber of pulse or dish revolution respectively.Connect through circuit, realize the normal counting statistics of counter, so that carry out Error Calculation; According to the watt-hour meter principle of work, under the normal condition, having good luck of two table meters should be consistent; If inconsistent, promptly be the error of two tables;
Error can be passed through computes:
Electronic watch error={ (counting 2*6400/ counting 1* calibrated meter umber of pulse)-1}*100%+ fundamental error;
Stem-winder error={ (meter record number of turns * 6400/ counting 1* calibrated meter dish revolution)-1}*100%+ fundamental error;
Wherein count 1 and refer to standard scale, counting 2 refers to calibrated meter;
Thereby judge table meter error through above measure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105274601A CN102455420A (en) | 2010-11-02 | 2010-11-02 | Method for correcting electric energy meter on site |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105274601A CN102455420A (en) | 2010-11-02 | 2010-11-02 | Method for correcting electric energy meter on site |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102455420A true CN102455420A (en) | 2012-05-16 |
Family
ID=46038829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105274601A Pending CN102455420A (en) | 2010-11-02 | 2010-11-02 | Method for correcting electric energy meter on site |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102455420A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459600A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Portable intelligent electronic energy meter field calibration device |
| CN105353337A (en) * | 2015-11-09 | 2016-02-24 | 深圳市海亿达能源科技股份有限公司 | Calibration method and device based on cloud computing |
| CN105372621A (en) * | 2015-11-09 | 2016-03-02 | 深圳市海亿达能源科技股份有限公司 | Device calibration method, mobile correction device and field measurement equipment |
| CN110888100A (en) * | 2019-11-29 | 2020-03-17 | 国网重庆市电力公司电力科学研究院 | Single-phase intelligent electric energy meter online on-load detection system and method |
-
2010
- 2010-11-02 CN CN2010105274601A patent/CN102455420A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459600A (en) * | 2014-12-05 | 2015-03-25 | 国家电网公司 | Portable intelligent electronic energy meter field calibration device |
| CN105353337A (en) * | 2015-11-09 | 2016-02-24 | 深圳市海亿达能源科技股份有限公司 | Calibration method and device based on cloud computing |
| CN105372621A (en) * | 2015-11-09 | 2016-03-02 | 深圳市海亿达能源科技股份有限公司 | Device calibration method, mobile correction device and field measurement equipment |
| CN110888100A (en) * | 2019-11-29 | 2020-03-17 | 国网重庆市电力公司电力科学研究院 | Single-phase intelligent electric energy meter online on-load detection system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201867490U (en) | Calibration device for multiepitope standard electric energy meters | |
| CN103018680B (en) | Metering method and metering device of battery level and battery supply set | |
| CN102087352A (en) | Three-phase intelligent watt-hour meter inspection device and method | |
| CN101363906A (en) | GPS time service and clock calibrating device for electric power measurement | |
| CN101477185A (en) | Evaluation method for measuring accuracy of electric energy meter | |
| CN102455420A (en) | Method for correcting electric energy meter on site | |
| CN111007450A (en) | Method for detecting result reliability of load identification equipment | |
| CN104317683A (en) | Method for testing power consumption of memory | |
| CN107505588A (en) | A kind of electric energy meter combines error testing method and system | |
| CN103645457A (en) | On-site inspection device for electric energy meter | |
| CN103424734A (en) | On-line calibration method of electronic watt-hour meter | |
| CN101556325B (en) | Method for quickly verifying electric energy error | |
| CN201757779U (en) | Electronic transformer calibrator | |
| CN201654223U (en) | Verification device for electric energy meters | |
| CN103091657A (en) | Calibration method of traveling-wave fault location system | |
| CN203259595U (en) | Full-automatic digital megohmmeter | |
| CN112526433A (en) | Lightning protection element tester calibration method based on timing voltage measurement method | |
| CN104101856A (en) | Method and device for detecting error of electronic measurement unit of zero-flux DC (Direct Current) current transformer | |
| CN101980030A (en) | Serial zero load current phase measuring instrument | |
| CN105093011B (en) | A kind of electric vehicle alternating current-direct current charging pile calibrating conversion equipment | |
| CN205581288U (en) | High accuracy direct current electric energy meter | |
| CN204925379U (en) | Digital electric energy meter pulse signal's integrated test system | |
| CN102323514B (en) | Intelligent detection method of motor winding magnetic potential | |
| CN203012009U (en) | Instrument current recorder | |
| CN114236455B (en) | Error calculation device and method for electric energy meter verification for processing missing pulse |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120516 |