Results 11 to 20 of about 1,060 (162)
Applied Sciences, 2023 Nowadays, voltage sag continues to remain a critical PQ issue in the industry. Since it is not possible to install a voltage analyzer on every node, optimal monitoring locations must be determined.
Vladislav Liubčuk +3 more
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A Three Phase Voltage Restorer Based on Bipolar Direct AC/AC Converters
IEEE Access, 2023 A new topology is proposed to regulate voltage sags/swells in the distribution network in this paper. Voltage sags and swells are a serious power quality problem faced by the power industry.
Wang Yibo +6 more
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Voltage Sag Detection Based on Rectified Voltage Processing [PDF]
IEEE Transactions on Power Delivery, 2004 An algorithm for voltage sag detection based on rectified voltage processing is presented and its performances are evaluated by means of simulated and real voltage waveforms (recorded at some low-voltage busbars and measured on a scaled prototype of a voltage support system). The algorithm is intended to detect voltage sag occurrence and to trigger the
A. FLORIO +2 more
openaire +1 more source
Analysis and Investigation on Causes of Voltage Sag Based on A Novel Apriori Algorithm [PDF]
E3S Web of Conferences, 2020 As more and more power users are increasingly demanding the quality of electricity, the losses caused by voltage sags are becoming more and more serious.
Liu Hao +5 more
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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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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
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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
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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
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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 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
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