Results 1 to 10 of about 7,084 (263)
Some of the next articles are maybe not open access.
Improved Premium Model of Voltage Sag Insurance Based on Voltage Sag Risk
IEEE Transactions on Power Delivery, 2022Voltage sag insurance (VSI) is an effective measure to reduce the voltage sag loss and risk for enterprises with insufficient mitigation confidence or economic ability. However, due to the lack of understanding of voltage sag risk (VSR), it is difficult for power utilities to identify the enterprises with VSI demands, and it is also unable to realize ...
Yun-Zhu Chen +5 more
openaire +1 more source
Voltage sags and their characterization
2010 International Conference on Power, Control and Embedded Systems, 2010Voltage sags are short duration reductions in rms voltage caused by short circuits, overloads and starting of large motors. Voltage sag is much more of a global problem. For proper analysis and mitigation of voltage sag, their characterization is important. The magnitude and durations are main characteristics of voltage sag.
Surya Prakash Singh, R. K. Tripathi
openaire +1 more source
Voltage Sag Studies in Distribution Networks—Part II: Voltage Sag Assessment
IEEE Transactions on Power Delivery, 2006This paper is the second part of a joint paper aimed at predicting the voltage sag performance of distribution networks by estimating voltage sag indices. This part explores the characteristics of voltage sags caused by faults in a distribution network considering the effect of the protective devices installed in the network.
J.A. Martinez, J. Martin-Arnedo
openaire +1 more source
Impact of Voltage Sags on Electric-Vehicle Charger and Critical Voltage Sag Determination
IEEE Transactions on Power Delivery, 2016This letter investigates the impact of voltage sags on electric-vehicle chargers and presents a method to determine the minimum symmetrical voltage sag during and after which chargers can both be kept stable. The proposed method is based on the constraints of pulse-width modulation (PWM), electric circuits, and small-signal stability.
Zhijun Wang +3 more
openaire +1 more source
International Coordination for Voltage Sag Indices
2005/2006 PES TD, 2005This paper proposes a general five-step framework for obtaining system indices for voltage dip performance. The framework is used to describe existing standards and ongoing work in standard-setting organizations (IEC, IEEE, CIGRE). Using the framework it becomes clear where the missing links are towards system-wide performance indices for voltage dips.
M.H.J. Bollen, D.D. Sabin
openaire +1 more source
Load modeling for voltage sag studies
2003 IEEE Power Engineering Society General Meeting (IEEE Cat. No.03CH37491), 2004This paper investigates the influence of load modeling on voltage sag characteristics and compares the results of voltage sag calculation with different load models. It is shown that some voltage sag characteristics are strongly influenced by the models chosen for representing power system loads.
Martinez, Juan A. +2 more
openaire +1 more source
Voltage sag analysis with distributed generation
Proceedings of the International Conference & Workshop on Emerging Trends in Technology, 2011Distributed Generation (DG) generally refers to small scale generation located near the source of the load which it serves. Distributed generation have impacts on the performance system to which it is connected. DG can also provide power supply to the customers during the scheduled interruption.
Jitha Varghese, M. Venmathi, L. Ramesh
openaire +1 more source
Voltage Sag Detection Technique for a Dynamic Voltage Restorer
IEEE Transactions on Industry Applications, 2003Dynamic voltage restorers (DVRs) are used to protect sensitive loads from the effects of voltage sags on the distribution feeder. This paper presents and verifies a novel voltage sag detection technique for use in conjunction with the main control system of a DVR.
Fitzer, Chris +2 more
openaire +2 more sources
Voltage Sag in Highly Automated Factories
2008 IEEE Industry Applications Society Annual Meeting, 2008This paper presents results from a power quality audit conducted at a highly automated plant over last year. It was found that the main problems for the equipment installed were voltage sags. Voltage sag analysis is a complex stochastic issue, since it involves a large variety of random factors, such as: type of short-circuits in the power system ...
Antonio Moreno-Muñoz +1 more
openaire +1 more source
2017
Performance of Matrix converter as a voltage sag compensator for linear loads has been described in this chapter. In power quality (PQ) parlance, the term voltage sag is used to designate a dip in the supply voltage magnitude over a small time duration which can extend over few cycles [48, 49].
Anindya Dasgupta, Parthasarathi Sensarma
openaire +1 more source
Performance of Matrix converter as a voltage sag compensator for linear loads has been described in this chapter. In power quality (PQ) parlance, the term voltage sag is used to designate a dip in the supply voltage magnitude over a small time duration which can extend over few cycles [48, 49].
Anindya Dasgupta, Parthasarathi Sensarma
openaire +1 more source