In the modern epoch, phasor measurement units (PMUs) are deployed within the power grids for real-time supervision of the grids’ static and dynamic behavior as the complexity of power grids has increased manifold due to the integration of extensively different generating resources. This paper presents a stability study of measurement class for reference phasor measurement unit for 1 year using the traceable PMU Calibration System at CSIR-National Physical Laboratory, New Delhi with ± 50 ppm to ± 100 ppm uncertainty. The PMU under test is evaluated for measurement class (M class) critical parameters for steady as well as dynamic performance analysis at 50 frames per second (fps) reporting rate with nominal frequency of 50 Hertz (Hz). The performance of PMU is evaluated and tested in conformance with IEC/IEEE 60255-118-1:2018 standard. A very stable reference PMU has been demonstrated for the transformation and enrichment of the power sector enabling an adaptive, reliable, sustainable, and digitally robust ecosystem.

在现代时代，相量测量单元 (PMU) 部署在电网内，用于实时监控电网的静态和动态行为，因为由于集成了广泛不同的发电资源，电网的复杂性增加了很多。本文介绍了使用新德里 CSIR 国家物理实验室的可追溯 PMU 校准系统对参考相量测量单元的测量等级进行 1 年的稳定性研究，不确定度为 ± 50 ppm 至 ± 100 ppm。对被测 PMU 的测量等级（M 等级）关键参数进行评估，以在 50 帧每秒 (fps) 的报告速率和 50 赫兹 (Hz) 的标称频率下进行稳定和动态性能分析。PMU 的性能根据 IEC/IEEE 60255-118-1:2018 标准进行评估和测试。