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Implementation of a non-conventional method to characterize voltage sags and swells [PDF]
Dyna, 2016 Voltage sags and swells are among the power quality disturbances that represent the biggest economic losses for affected users. It is therefore necessary to undertake a suitable characterization of those events to conduct studies that permit the causes ...
Jorge Enrique Celis-Montero +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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The influence of motor reacceleration on voltage sags [PDF]
IEEE Transactions on Industry Applications, 1995 The assumption that a voltage sag is rectangular is not correct in a power system with large induction motor loads. The motors decelerate during the short circuit. After fault-clearing, they will accelerate again, drawing a high reactive current from the supply, causing a prolonged postfault voltage sag. This is aggravated by the removal of branches by
Bollen, M.H.J., Bollen, MHJ Math
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Ingeniería e Investigación, 2011 This paper proposes k-means clustering algorithm to identify voltage sags patterns and group fault zones with similar impact in high and medium voltage electric. The proposed methodology comprises three stages.
Miguel Romero +2 more
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Advanced Control of the Dynamic Voltage Restorer for Mitigating Voltage Sags in Power Systems
Advances in Electrical and Electronic Engineering, 2018 The paper presents a vector control with two cascaded loops to improve the properties of Dynamic Voltage Restorer (DVR) to minimize Voltage Sags on the grid.
Dung Vo Tien +4 more
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Finite Element Analysis of Permanent Magnet Synchronous Motors Subjected to Symmetrical Voltage Sags
Iranian Journal of Electrical and Electronic Engineering, 2014 This paper studies the effects of symmetrical voltage sags on the operational characteristics of a Permanent Magnet Synchronous Motor (PMSM) by Finite Element Method (FEM).
H. Fallah khoshkar +2 more
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Self-learning estimation method for the severity of voltage sags caused by lightning
电力工程技术, 2023 Lightning is one of the main causes of voltage sags in power grid. Accurate estimation of the severity of voltage sags caused by lightning can provide a basis for developing optimal management plans and siting sensitive users.
WANG Yi +4 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
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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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