This guide provides calculation and evaluation methods for standard uncertainty components, combined standard uncertainty, and overall extended uncertainty, as well as determination methods for allowable comprehensive error limits, and optimal combination methods for energy meters, voltage transformers and current transformers of various phases for electric energy metering devices. These methods are based on the analysis of the sources of uncertainty of electric energy metering devices, including the error of the energy meter, transformer and the error of the secondary circuit voltage drop. The effects of load balancing characteristics, power factor and other measurement conditions are also considered. Therefore, the allowable comprehensive error limit and the optimal combination selection method of electric energy metering devices are given. This guide provides technical basis and scientific methods for the evaluation and control of the overall metering performance of electric energy metering devices, improving the accuracy and fairness of electric energy metering and trade settlement, and supporting the safe, economic and reliable operation of power grids. This guide is applicable to the evaluation and control of the overall metering performance for electric energy metering devices during their design, configuration, acceptance and operation.
- Sponsor Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Status
- Active PAR
- PAR Approval
- 2024-02-15
Working Group Details
- Society
- IEEE Power and Energy Society
Learn More About IEEE Power and Energy Society - Sponsor Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Working Group
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PE/PSIM/OMUEEMD - Guide for Evaluation and Application of Overall Measurement Uncertainty of Electrical Energy Metering Devices
- IEEE Program Manager
- Jiajia Liu
Contact Jiajia Liu - Working Group Chair
- PeiDong He
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