This guide provides methods for evaluating and expressing the standard uncertainty, combined standard uncertainty, and extended uncertainty of the overall electric energy metering device used in the power grid. Furthermore, the guide provides methods for determining the allowable comprehensive error limit of the overall electric energy metering device. Additionally, the guide provides methods for configuring an optimal combination of energy meters, voltage transformers, and current transformers in electric energy metering devices. These methods are based on the analysis of the sources of uncertainty of the overall electric energy metering device, including measurement errors of energy meters, transformers, and because of secondary circuit voltage drop. The effects of load balancing characteristics, power factor, and other measurement conditions are also considered. This guide provides technical a basis and scientific methods for the evaluation and control of the overall metering performance of electric energy metering devices used in a power grid, improving the accuracy and fairness of electric energy metering and trade settlement, and supporting the safe, economic, and reliable operation of a power grid. This guide is applicable to the evaluation and control of the overall metering performance of electric energy metering devices used in a power grid during their design, configuration, acceptance, and operation. The guide is not applicable to DC electric energy devices and digital electric energy devices.
- Sponsor Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Status
- Active PAR
- PAR Approval
- 2024-09-26
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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