Results 21 to 30 of about 758,847 (249)

A Non-invasive Identification Method for Sensitive Load Based on Voltage Sag Monitoring Data

open access: yesZhongguo dianli, 2021
For the problem that it is difficult to accurately obtain the user's sensitive equipment parameters and the production process structure in voltage sag mitigation, a method is proposed for identifying sensitive loads based on available voltage sag ...
Chong HU   +5 more
doaj   +1 more source

Voltage dip generator for testing wind turbines connected to electrical networks [PDF]

open access: yes, 2011
This paper describes a new voltage dip generator that allows the shape of the time profile of the voltage generated to be configured. The use of this device as a tool to test the fault ride-through capability of wind turbines connected to the electricity
N. Herrero   +28 more
core   +1 more source

A System Assessment Method for Voltage Sag Severity Based on Average Point-To-Line Distance Index

open access: yesZhongguo dianli, 2020
In order to systematically compare the voltage sag severity of different regions, a system method is proposed to assess grid voltage sag severity. The method obtains the time duration intervals through cluster analysis, and gets the medians of residual ...
Qing ZHONG   +4 more
doaj   +1 more source

An effective control algorithm for dynamic voltage restorer under symmetrical and asymmetrical grid voltage conditions

open access: yesElectrical engineering & Electromechanics, 2021
Introduction. Voltage sag, which is associated to a transitory drop in the root mean square voltage characterizing an electrical source network. During these perturbations, the corresponding electronic customers and devices will suffer from serious ...
A. Boussaid   +3 more
doaj   +1 more source

Evaluation Method and Probabilistic Index of Voltage Sag Severity Considering Point-on-wave

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
The impact of voltage sag on sensitive devices is related to the time when the sag occurs. However, the point-on-wave of a sag is uncertain. Therefore, this paper presents a novel approach to evaluate the voltage sag severity considering a random point ...
Guopei Wu   +3 more
doaj   +1 more source

Research of optimized compensation strategy for mine-used dynamic voltage restorer

open access: yesGong-kuang zidonghua, 2016
To solve low utilization of DC-link capacitor of mine-used dynamic voltage restorer under long voltage sag, an optimized compensation strategy was proposed, namely a smooth transition between pre-sag compensation and in-phase compensation, so as to ...
LI Zhankai, WANG Jingqin, ZHANG Fumi
doaj   +1 more source

Voltage Sag Assessment, Detection, and Classification in Distribution Systems Embedded With Fast Charging Stations

open access: yesIEEE Access, 2023
A fast charging station (FCS), which consists of eight fast and extreme chargers that operate individually and simultaneously, is considered in this research work. The FCS is supplied from the main grid as well as a Photovoltaic (PV) Farm that includes a
Sami M. Alshareef
doaj   +1 more source

Voltage Sag Mitigation Effect Considering Failure Probability According to the Types of SFCL

open access: yesEnergies, 2023
The development of industrial technology is based on electronic devices that are sensitive to power quality. Thus, the demand for high-quality and reliable power supplies is increasing.
Joong-Woo Shin   +2 more
doaj   +1 more source

Voltage sags in power distribution networks [PDF]

open access: yes, 2005
Voltage sags have become increasingly important when considering the various power quality issues that cause inconvenience to customers. For some customers voltage sags cause especially high costs. Thus, power distribution companies should understand the
Heine, Pirjo
core   +1 more source

Analysis of Voltage Sag Due to Short Circuit on the Sub System in Central Sumatera

open access: yesInternational Journal of Electrical, Energy and Power System Engineering, 2018
Power quality is closely related to electrical energy which is directly related to voltage and current interference. Electrical equipment used daily requires good power quality. The thing that affects the quality of the power is the voltage dip. Based on
Hamzah Eteruddin   +2 more
doaj   +1 more source

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