US 12,248,050 B2
Dynamic error measurement apparatus, system, method for electricity meter
Jian Ma, Jiangxi (CN); Tao Hu, Jiangxi (CN); Xuewei Wang, Beijing (CN); Kexu Chen, Jiangxi (CN); Di Wu, Anhui (CN); Yan Zhao, Jiangxi (CN); Gaofeng Deng, Jiangxi (CN); Qiang Liu, Jiangxi (CN); Aichao Yang, Jiangxi (CN); and Yanlinzi Huang, Jiangxi (CN)
Assigned to Power Supply Service and Management Center, State Grid Jiangxi Electric Power Co., Ltd., Nanchang (CN); and Beijing University of Chemical Technology, Beijing (CN)
Filed by Power Supply Service and Management Center, State Grid Jiangxi Electric Power Co., Ltd., Jiangxi (CN); and Beijing University of Chemical Technology, Beijing (CN)
Filed on Nov. 4, 2022, as Appl. No. 18/052,580.
Application 18/052,580 is a continuation of application No. PCT/CN2022/110229, filed on Aug. 4, 2022.
Claims priority of application No. 202210263818.7 (CN), filed on Mar. 15, 2022.
Prior Publication US 2024/0085510 A1, Mar. 14, 2024
Int. Cl. G01R 35/00 (2006.01); G01R 19/10 (2006.01)
CPC G01R 35/00 (2013.01) [G01R 19/10 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A dynamic error measurement apparatus for an electricity meter, comprising a test signal generation unit, a measurement unit, a current summation unit, and a calculation control unit, wherein
the test signal generation unit is configured to generate a voltage test signal and two-circuit current test signals under the control of the calculation control unit, output the voltage test signal to the measurement unit, and output the two-circuit current test signals to the current summation unit and the measurement unit;
the measurement unit is configured to determine two-circuit electric energy values based on the received voltage test signal and the received two-circuit current test signals, and output the two-circuit electric energy values to the calculation control unit;
the current summation unit is configured to determine a combined current signal based on the two-circuit current test signals; and
the calculation control unit is configured to determine a total electric energy value based on the two-circuit electric energy values.