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Long-Term Stability Analysis for Measurement Class of Phasor Measurement Unit at CSIR-NPL

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Abstract

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.

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Abbreviations

PMU:

Phasor measurement unit

PMU CAL System:

Phasor Measurement Unit Calibration System

BU:

Billion unit

GPS:

Global positioning system

UTC:

Coordinated universal time

IEC:

International Electrotechnical Commission

IEEE:

Institute of Electrical and Electronics Engineers

WG:

Working group

TVE:

Total vector error

FE:

Frequency error

ROCOF:

Rate of change of frequency

RFE:

Rate of change of frequency error

CSIR:

Council of Scientific and Industrial Research

NPL:

National Physical Laboratory

NMI:

National Measurement Institute

PJVS:

Programmable Josephson Voltage Standard

QHR:

Quantum Hall Resistance

MJTC:

Multi junction thermal converter

PTS:

Pulsar-calibrated timing source

LF:

Low frequency

SI units:

The International System of Units

M class:

Measurement class

PPS:

Pulse per second

Hz:

Hertz

fps:

Frames per second

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Authors and Affiliations

  1. CSIR-National Physical Laboratory, New Delhi, 110012, India

    Avni Khatkar, Swati Kumari, Archana Sahu, Sunidhi Luthra & Saood Ahmad

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  1. Avni Khatkar
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  2. Swati Kumari
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  3. Archana Sahu
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  4. Sunidhi Luthra
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  5. Saood Ahmad
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Correspondence to Avni Khatkar.

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Khatkar, A., Kumari, S., Sahu, A. et al. Long-Term Stability Analysis for Measurement Class of Phasor Measurement Unit at CSIR-NPL. MAPAN 38, 281–293 (2023). https://doi.org/10.1007/s12647-022-00580-3

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