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Mitigation of Voltage Sags and Swells by Dynamic Voltage Restorer
Advanced Materials Research, 2013This paper presents the modelling and simulation of Dynamic Voltage Restorer (DVR) for mitigation of voltage sags and swells which are the major problems and issues on non linear loads.The Dynamic Voltage Restore (DVR) has become popular as a cost effective solutions for the protection of sensitive loads from voltage sags and swells..
Shakti Prasad Mishra +3 more
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Series Voltage Regulator for a Distribution Transformer to Compensate Voltage Sag/Swell
IEEE Transactions on Industrial Electronics, 2017This paper presents a series voltage regulator for a distribution transformer which addresses power quality issues in the electrical power distribution system. The proposed system is comprised of a line frequency transformer connected to a power electronic converter which is autoconnected on the secondary side. This autoconnection is facilitated by use
Taeyong Kang +3 more
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About voltage sags and swells analysis
10th International Conference on Harmonics and Quality of Power. Proceedings (Cat. No.02EX630), 2004Time at level analysis of discrete events is proposed to characterize voltage sags and swells instead of the simple magnitude vs duration characteristics presently used. Although requiring a little more computer memory and digital processing, the proposed methodology constitutes a significant improvement for the characterization of unpredictable ...
S.M. Deckmann, A.A. Ferrira
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Detecting Voltage Swell, Interruption and Sag
2018 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM), 2018Quality control of electrical energy and timely detection of interference and distortion of supply voltage is a very important task. This is necessary both to find the source of distortion, and to compensate for distortion. In this review, we consider the problem of detecting random events: voltage swell, interruption, and voltage sag in the power ...
Vladimir A. Skolota, Gennady S. Zinovev
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Mitigation of voltage sag and swell using dynamic voltage restorer
2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD), 2014The fast developments in power electronic technology have made it possible to mitigate voltage disturbances in power system. Among the voltage disturbances challenging the industry, the voltage sags are considered the most important problem to the sensitive loads.
Deepa Francis, Tomson Thomas
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Voltage sag/swell compensation in an interline Dynamic Voltage Restorer
2011 International Conference on Emerging Trends in Electrical and Computer Technology, 2011The Dynamic Voltage Restorer (DVR) provides an advanced and economical solution for both voltage sag and swell problems. The voltage-restoration process involves real-power injection into the distribution system. The Interline DVR (IDVR) proposed in this paper provides a way to compensate the voltage deviation caused in a feeder.
Rani P. Usha, R. Sudha, S. Rama Reddy
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Characterizing voltage sags and swells using three-phase voltage ellipse parameters
2014 IEEE Industry Application Society Annual Meeting, 2014This paper presents an algorithm for detection, classification, and characterization of voltage sags and swells in electricity networks using three-phase voltage ellipse parameters. The proposed method employs the instantaneous magnitude of three-phase voltage signals in three axes, which are separated from each other by 120..
Mollah R. Alam +2 more
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Extended Voltage Swell Ride-Through Capability for PWM Voltage-Source Rectifiers
IEEE Transactions on Industrial Electronics, 2002Voltage swells are one of the most harmful voltage disturbances for static power converters. A supply voltage increase may severely damage or trip converters, causing production and revenue losses. In the case of the PWM voltage source rectifier, a swell causes saturation of its control system, followed by a transition to 6-pulse operation that leaves ...
Rolando Burgos, Eduardo P. Wiechmann
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Voltage-Induced Swelling and Deswelling of Weak Polybase Brushes
Langmuir, 2011We have investigated a novel method of remotely switching the conformation of a weak polybase brush using an applied voltage. Surface-grafted polyelectrolyte brushes exhibit rich responsive behavior and show great promise as "smart surfaces", but existing switching methods involve physically or chemically changing the solution in contact with the brush.
Weir, MP +6 more
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Dynamic Control Strategy in Medium Voltage DVR for Mitigating Voltage Sags/Swells
2006 International Conference on Power System Technology, 2006This paper presents control algorithm for dynamic voltage restorer (DVR) to improve voltage quality problems such as voltage sags/swells in distribution systems. When voltage sags/swells occur, possibly, due to faults and some load switching, DVR has to detect the problem and inject appropriate voltage component as soon as possible.
Boonchiam, P., Mithulananthan, Nadarajah
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