Results 21 to 30 of about 1,701,822 (335)
Sensitivity of Voltage Sags Estimation to Uncertainties
IEEE Access, 2023 Voltage sags are power quality disturbances mainly caused by faults with a highly random nature. For this reason, the severity and frequency of occurrence of voltage sags is typically analyzed by means of probabilistic methods, such as Monte Carlo ...
Xavier Zambrano +4 more
doaj +1 more source
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
openaire +1 more source
A novel voltage sag approach during unintentional islanding scenarios: A survey from real recorded events [PDF]
, 2019 In this paper, a new voltage sag approach is analytically modelled and validated using both simulation and field measurements. The main aspect of this approach is to propose a new voltage sag feature which appears during unintentional islanding ...
Bosch Tous, Ricardo +2 more
core +3 more sources
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
doaj +1 more source
Applied Sciences, 2023 Nowadays, voltage sag continues to remain a critical PQ issue in the industry. Since it is not possible to install a voltage analyzer on every node, optimal monitoring locations must be determined.
Vladislav Liubčuk +3 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
A multifunctional dynamic voltage restorer for power quality improvement [PDF]
, 2018 Power quality is a major concern in electrical power systems. The power quality disturbances such as sags, swells, harmonic distortion and other interruptions have an impact on the electrical devices and machines and in severe cases can cause serious ...
Dung, Vo Tien +2 more
core +1 more source
IEEE transactions on industry applications, 2020 This article proposes a coordinated optimal feedback control approach to mitigate the induction motor starting voltage sag and support the transient restoration in distribution networks.
Sumaiya Hasan +4 more
semanticscholar +1 more source
Power quality disturbances assessment during unintentional islanding scenarios. A contribution to voltage sag studies [PDF]
, 2019 This paper presents a novel voltage sag topology that occurs during an unintentional islanding operation (IO) within a distribution network (DN) due to large induction motors (IMs).
Bosch Tous, Ricardo +2 more
core +2 more sources