Harmonic and Applied Analysis (original) (raw)

Harmonics-understanding-thefacts

Understanding what is important to know about harmonics can be challenging for those without extensive electrical engineering backgrounds. In this two part series of articles, the first article will help to clarify what those important facts are, and the second will help tell when to raise the flag.

Applied and Computational Harmonic Analysis

1996

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Introspection into Domestic & Industrial Harmonic Analysis

This paper presents the survey and introduction of a harmonic reduction module for domestic consumers as well as a study on the harmonic analysis in the industrial sector. As the non-linear loads are increasing day by day such a system should be able to reduce problems associated with nonlinear loads in power grid. In this paper we focus on studying harmonic contents injected by various loads available at domestic consumer end. It is also intended to give an overview of power system harmonics in the industrial sectors and study the basic methods used to reduce the problems caused by it

HARMONICS AND POWER SYSTEMS

International Standard Book Number-10: 0-8493-3016-5 (Hardcover) International Standard Book Number-13: 978-0-8493-3016-2 (Hardcover) Library of Congress Card Number 2005046730

Harmonic Analysis in Frequency and Time Domain

IEEE Transactions on Power Delivery, 2013

This paper presents a review with a concise description and analysis of the fundamentals, characteristics, analytical details, merits, and drawbacks associated with existing methods in frequency and time domain for harmonic analysis in practical power networks. The description and analysis are centered on methods developed in the harmonic domain, hybrid frequency-time domain, and time domain, respectively. Validation of the reviewed methods for harmonic analysis, against one of the widely accepted digital simulators, such as EMTP, EMTDC, or MATLAB/SIMULINK, is reported in the cited individual contributions. Index Terms-Harmonic domain, Hartley transform, hybrid frequency-time domain, nonlinear elements, time varying. I. INTRODUCTION A POWER system, operating under ideal conditions, is expected to be perfectly balanced, of a single frequency, and with sinusoidal current and voltage waveforms of constant amplitude. However, in practical power systems, this ideal operational mode is not encountered, since the network components, at a lesser or greater extent, have the undesirable effect of distorting the original sinusoidal waveforms. Nonlinear components and loads, such as power converters, flexible ac transmission systems (FACTS) devices, nonlinear saturation and hysteresis in components with magnetic cores, fluorescent lamps and arc furnaces, among others, represent the main contribution to this effect, known as harmonic distortion. Adverse quality of power effects due to harmonic distortion are, for instance, interference with communication, control and protection systems, reduction of the equipment's life span, and additional losses in the power system. Diverse harmonic distortion issues, such as its causes, effect on quality of power, standards and mitigation techniques, are described in literature [1], [2]. Digital harmonic analysis relies on harmonic detection and prediction, respectively. The first processes in real-time data of the monitored harmonic content in the network, while the last Manuscript

Harmonics from Today's Emergent Technology

2019 IEEE 7th International Conference on Smart Energy Grid Engineering (SEGE), 2019

The IEEE STD 519 was first introduced in 1981, revised in 1992, and most recently updated in 2014 to provide direction on dealing with harmonics introduced by static power converters and other nonlinear loads so that power quality problems could be averted. However, it is time to update and reflect today’s growing technology because harmonic emissions emanating from renewable energy generation such as wind turbines, solar photovoltaic panel, energy cost-saving products such as LED lighting, home appliances, and electric vehicle chargers fail to adhere to the IEEE STD 519. This was based on real-time measurements and analyses. Without a very strong standard, backed up by rigid enforcement measures, it is likely that harmonic pollution will continue to increase. Power quality would trigger “power quality” problems under certain operating conditions.