Abstract
Power Quality (PQ) measurements and auditing play a vital role for smart grid applications, industrial safety and reliability. The major electrical PQ characteristics and parameters, like Voltage Sags/Swells, Harmonic Distortion, Voltage Unbalance, Voltage Variation & Flicker, and Supply Interruptions, are studied with the aim of maintaining the international or national standards. The electrical characteristics are studied and analyzed for single-phase and poly-phase systems in this IEEE 1159 recommended practice. The significant PQ constraints and parameters, like electromagnetic interference phenomenon deviation from the regular operation due to load equipment or source to load interaction, are described. Further, it is discussed PQ different monitoring devices, roles, and applications. In this paper, power quality monitoring of the equipment using FLUKE instrument and accessories to identify the equipment performance, audit, PQ issues are discussed practically for a two-panel boards switchgear equipment as a case study in Malaysia. Here, trends in voltage and current changes with current imbalances were observed on 1st May 2019 morning 8'o clock and on 7th May 2019 evening at 9'0 clock.
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