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Type: Artigo de periódico
Title: Utility Harmonic Impedance Measurement Based on Data Selection
Author: Hui, Jin
Freitas, Walmir
Vieira, Jose C. M.
Yang, Honggeng
Liu, Yamei
Abstract: Determination of the utility harmonic impedance based on measurements is a significant task for utility power-quality improvement and management. Compared to those well-established, accurate invasive methods, the noninvasive methods are more desirable since they work with natural variations of the loads connected to the point of common coupling (PCC), so that no intentional disturbance is needed. However, the accuracy of these methods has to be improved. In this context, this paper first points out that the critical problem of the noninvasive methods is how to select the measurements that can be used with confidence for utility harmonic impedance calculation. Then, this paper presents a new measurement technique which is based on the complex data-based least-square regression, combined with two techniques of data selection. Simulation and field test results show that the proposed noninvasive method is practical and robust so that it can be used with confidence to determine the utility harmonic impedances.
Subject: Harmonic impedance
noninvasive method
power quality (PQ)
Editor: IEEE-Inst Electrical Electronics Engineers Inc
Rights: fechado
Identifier DOI: 10.1109/TPWRD.2012.2207969
Date Issue: 2012
Appears in Collections:FEEC - Artigos e Outros Documentos

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