Results 271 to 280 of about 3,922 (300)

Distributed generation based dynamic voltage restorer

IET-UK International Conference on Information and Communication Technology in Electrical Sciences (ICTES 2007), 2007
Dynamic voltage restorer (DVR), either battery or rectifier supported, is proposed for compensation of voltage sag in the literature. The drawback of battery fed DVR is limited capacity. Rectifier supported DVR may not be limited, from the capacity point-of-view. But, the operation of DVR may become impractical, when the source is remotely located. One
G.S. Reddy, R.K. Singh
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A new type dynamic voltage restorer

2006 China International Conference on Electricity Distribution (CICED 2006), 2006
Dynamic voltage restorer(DVR) based on power electronic technology have been developed and made an important role to provide protection against power quality problems. This paper proposes a new technique to inject energy during DVR compensation. There are two inverters in the DVR.
null Yanjie Wang, null Baoshu Li
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Project Study of Dynamic Voltage Restorer

2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005
The paper studies a practical project of 2 MVA dynamic voltage restorer on the basis of transformer-less cascade multilevel topology, it discusses each part working principle of DVR, but also provides a practical voltage sag problem solving scheme for a 6 kV feed line based on proposed cascade structure.
null Zhongdong Yin, null Minxiao Han, null Lixia Zhou, null Kunshan yU   +3 more
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Fault current interruption by the dynamic voltage restorer

2013 IEEE Power & Energy Society General Meeting, 2013
This paper introduces and evaluates an auxiliary control strategy for downstream fault current interruption in a radial distribution line by means of a dynamic voltage restorer (DVR). The proposed controller supplements the voltage-sag compensation control of the DVR.
Firouz Badrkhani Ajaei, Shahrokh Farhangi, Reza Iravani   +2 more
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A new voltage reference generator for dynamic voltage restorer

2015 IEEE 24th International Symposium on Industrial Electronics (ISIE), 2015
Dynamic voltage restore (DVR) is a well established power device able to compensate voltage disturbances, in especial voltage sags and swells, in the power system. Its main goal is to protect sensitive loads against these disturbances. For this purpose, the precise computation of the DVR compensation voltage reference is a important issue.
Gustavo M. S. Azevedo, Francisco A. S. Neves, Valeria S. Santos, Marcelo C. Cavalcanti   +3 more
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Necessity of DC Voltage Storage for Dynamic Voltage Restorer

Asian Journal of Electrical Sciences, 2012
Problems of voltage sags and swells and its severe impact on sensitive load is well known. To solve the problems custom power devices are used, one of those devices is DVR which is most efficient and effective modern custom power device used in power distribution network.
Swapnil R. Borakhade, U. Anjali
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SMES Based Dynamic Voltage Restorer for Voltage Fluctuations Compensation

IEEE Transactions on Applied Superconductivity, 2010
This paper presents a superconducting magnetic energy storage (SMES) based dynamic voltage restorer (DVR) to protect consumers from the grid voltage fluctuations. Due to the characteristic of high energy density and quick response, a superconducting magnet is selected as the energy storage unit to improve the compensation capability of DVR.
null Jing Shi, null Yuejin Tang, null Kai Yang, null Lei Chen, null Li Ren, null Jingdong Li, null Shijie Cheng   +6 more
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Photovoltaic Based Dynamic Voltage Restorer For Voltage Sag Mitigation

2007 5th Student Conference on Research and Development, 2007
Dynamic voltage restorer (DVR) is a custom power device used for mitigating voltage sags in power distribution systems. This paper presents a simulation model of a 12-pulse DVR using photovoltaic as a means of providing an alternative energy source for the DVR. For the development of DVR model, two models were considered by using user-defined model and
Ali O Al-Mathnani, Azah Mohamed, Mohd Alauddin Mohd Ali   +2 more
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Optimal dynamic voltage restorer controller for voltage sag compensation

2015 23rd Iranian Conference on Electrical Engineering, 2015
This paper proposes an optimal fuzzy logic controller for dynamic voltage restorer (DVR). The DVR is modeled by three phase voltage source inverter (VSI). Simulation is based on zero-order Sugeno fuzzy logic controller and particle swarm optimization (PSO) technique is used to optimally adjust its parameters.
Faranak Farhadi, Sajjad Solat, Seyyed Hamed Mahdioun   +2 more
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Dynamic voltage restorer: the customers's perspective

IEE Half Day Colloquium on Dynamic Voltage Restorers - Replacing those Missing Cycles, 1998
Paper mill variable speed drives are vulnerable to power dips because of control of thyristor firing. Firing angle control has difficulty following the voltage change, with possible consequent damage to the thyristors. To prevent damage, it is common for drives to be equipped with protection that trips the drive, with settings dependent on sensitivity ...
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