Title:
DYNAMIC-ERROR MEASUREMENT APPARATUS, SYSTEM AND METHOD FOR ELECTRIC ENERGY METER
Document Type and Number:
WIPO Patent Application WO/2023/173658
Kind Code:
A1
Abstract:
A dynamic-error measurement apparatus (100), system and method for an electric energy meter. The measurement apparatus (100) comprises a test signal generation unit (101), which is used for generating a voltage test signal and a second current test signal, outputting the voltage test signal to a measurement unit (102), and outputting the second current test signal to the measurement unit (102) and a current adding unit (103), wherein the measurement unit (102) is used for determining a second electric energy value according to the voltage test signal and the second current test signal, and outputting the second electric energy value to a calculation control unit (104); the current adding unit (103) is used for determining a combined current signal according to the second current test signal; and the calculation control unit (104) is used for determining a total electric energy value according to the second electric energy value. The measurement system comprises a standard meter (300) and the measurement apparatus (100). A dynamic error of the measurement apparatus (100) is calibrated by using the measurement system, so as to realize a theoretical shortest time, and the problem of the lack of a standard meter with high dynamic accuracy is solved. The measurement system further comprises a detected meter (600), and a dynamic error of the detected meter (600) is measured by using the measurement system, thereby greatly reducing uncertainty factors that affect a test result.
Inventors:
MA JIAN (CN)
HU TAO (CN)
WANG XUEWEI (CN)
CHEN KEXU (CN)
WU DI (CN)
ZHAO YAN (CN)
DENG GAOFENG (CN)
LIU QIANG (CN)
YANG AICHAO (CN)
HUANG YANLINZI (CN)
HU TAO (CN)
WANG XUEWEI (CN)
CHEN KEXU (CN)
WU DI (CN)
ZHAO YAN (CN)
DENG GAOFENG (CN)
LIU QIANG (CN)
YANG AICHAO (CN)
HUANG YANLINZI (CN)
Application Number:
PCT/CN2022/110229
Publication Date:
September 21, 2023
Filing Date:
August 04, 2022
Export Citation:
Assignee:
POWER SUPPLY SERVICE AND MAN CENTER STATE GRID JIANGXI ELECTRIC POWER CO LTD (CN)
UNIV BEIJING CHEM TECH (CN)
UNIV BEIJING CHEM TECH (CN)
International Classes:
G01R35/04
Foreign References:
| CN114779155A | 2022-07-22 | |||
| CN104569900A | 2015-04-29 | |||
| CN111562537A | 2020-08-21 | |||
| CN101718853A | 2010-06-02 | |||
| CN103913716A | 2014-07-09 | |||
| CN212646969U | 2021-03-02 | |||
| JPH0367182A | 1991-03-22 |
Attorney, Agent or Firm:
SCIHEAD IP LAW FIRM (CN)
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