Results 31 to 40 of about 1,701,822 (335)
Methodology for Determination of the Number of Equipment Malfunctions Due to Voltage Sags
Energies, 2017 This article deals with the assessment of the reliability of sensitive equipment due to voltage sags. The most frequent problems of power quality are voltage sags.
Alena Otcenasova +4 more
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A transformerless active voltage quality regulator with the novel three‐leg circuit
IET Power Electronics, 2021 Voltage sags and momentary interruptions of power are the most severe voltage disturbances. Here, a tansformerless active voltage quality regulator with the novel three‐leg circuit is proposed to mitigate long duration and deep voltage sags.
Sen Wang +5 more
doaj +1 more source
, 2020 Power quality problems are becoming a major issue. Every utility company consumer desires to receive steady-state voltage, i.e. a sinusoidal waveform of constant frequency as generated at power stations, but the influence of disturbances in the shape of ...
A. Soomro +4 more
semanticscholar +1 more source
Journal of Energy in Southern Africa, 2016 Power system faults can cause voltage sags that, if they are less than voltage sensitivity threshold of equipment, can lead to interruption of supply and lead to incurring of financial losses.
N Mbuli, R Xezile, JHC Pretorius, P Sowa
doaj +1 more source
Energies, 2022 The doubly fed induction generator (DFIG) and back-to-back converter are very sensitive to power quality disturbances in grid-connected wind energy conversion systems (WECSs).
Igor Rodrigues de Oliveira +2 more
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Voltage sag assessment using an extended fault positions method and Monte Carlo simulation
Dyna, 2016 In this article, we propose an extended fault positions method combined with the Monte Carlo method to evaluate voltage sags. The distribution function SARFI is obtained by taking into account the randomness of (i) location of faults in lines, (ii ...
Jorge Washington Sagre +2 more
doaj +1 more source
Engineering Proceedings, 2023 This research paper addresses the issue of enhancing the operational availability of NPC three-level converter-based high-voltage direct current (HVDC) transport systems during alternating current (AC) grid fault conditions.
Ilyass El Myasse +3 more
doaj +1 more source
PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]
, 2018 This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio +4 more
core +2 more sources
Test and study on sensitivity of electronic circuit in low‐voltage release to voltage sags
IET Circuits, Devices and Systems, 2017 This study focuses on sensitivity of electronic circuit in low‐voltage release to voltage sags based on a large‐scale test results. Although studies about ride‐through capability of some electronic devices during voltage sags have been carried out, there
Sen Ouyang, Liyuan Liu
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Voltage sags: energy and severity index assessment
Revista UIS Ingenierías, 2019 An estimate of the energy not supplied by the network operator is made to quantify users affected by voltage sags. The calculation method imposed by the normative to evaluate the effect of voltage sags does not contemplate the dynamic behavior of this ...
Andres Felipe Guerrero-Guerrero +7 more
doaj +1 more source