Results 21 to 30 of about 7,084 (263)
Mathematics, 2022 One of the common power quality (PQ) problems in transmission and distribution systems is the voltage sag that affects the sensitive loads. Losses and problems caused by the voltage sag in the power system can be reduced by correctly determining the ...
Yunus Yalman +6 more
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Energies, 2021 Considering the influence of user equipment voltage tolerance characteristics and sag types on the evaluation results, this paper proposes a voltage sag severity evaluation method for the system side which considers the influence of the voltage tolerance
Yonghai Xu +3 more
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Macroeconomic Assessment of Voltage Sags [PDF]
Sustainability, 2016 The electric power sector has changed dramatically since the 1980s. Electricity customers are now demanding uninterrupted and high quality service from both utilities and authorities. By becoming more and more dependent on the voltage sensitive electronic equipment, the industry sector is the one which is affected the most by voltage disturbances ...
Lehtonen, Matti, Küfeoğlu, Sinan
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Benchmarking of Voltage Sag Generators [PDF]
IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society, 2012 The increased penetration of renewable energy systems, like photovoltaic and wind power systems, rises the concern about the power quality and stability of the utility grid. Some regulations for Low Voltage Ride-Through (LVRT) for medium voltage or high voltage applications, are coming into force to guide these grid-connected distributed power ...
Yongheng Yang +2 more
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Homology detection method for voltage sags based on space vector and maximum mean discrepancy
Energy Reports, 2022 A single voltage sag source may trigger multiple power quality monitors to record waveforms resulting in the redundancy of voltage sag monitoring data.
Wei Wang +5 more
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IEEE Access, 2022 The classification of voltage sag sources is essential for the establishment of controlling scheme and reasonable division of responsibilities in voltage sag-associated accidents.
Zhang Yikun +5 more
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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
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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
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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 simulations, where different probability distributions are selected to model the uncertain inputs (e.g ...
Zambrano, Xavier +4 more
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Optimal configuration of voltage sag monitors considering sensitive areas
电力工程技术, 2022 Voltage sags are unavoidable and seriously harmful to sensitive loads. Reasonable configuration of limited monitors can reduce monitoring costs,provide data support for voltage sag management and reduction of voltage sag hazards.
LIU Haiyong +4 more
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