Results 11 to 20 of about 2,543,553 (287)
A topology-based scheme for adaptive underfrequency load shedding [PDF]
2017 IEEE Manchester PowerTech, 2017 This paper presents a topology-based scheme for adaptive underfrequency load shedding (UFLS). By tracking changes of power system topology and information about power flow, the proposed method is able to identify islanded conditions, the number of islands and their deficits of active power, which are fundamental parameters for the adaptive UFLS scheme.
Duong, Dinh Thuc, Uhlen, Kjetil
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Adaptive Load Shedding Analysis in Power Systems by Using Artificial Neural Network [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2010 The stability of frequency and voltage is one of the basic principles in the power systems. One of the latest control measures for power system frequency control and stability is load shedding.
Rahmatolah Hooshmand, Majid Moazzami
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Multiagent-Based Distributed Load Shedding for Islanded Microgrids
Energies, 2014 This paper addresses a multiagent-based distributed load shedding scheme to restore frequency for the microgrids during islanded operation. The objective of the proposed scheme is to realize a distributed load shedding considering its associated cost and
Xi Wu, Ping Jiang, Jing Lu
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Adaptive Time Delay Strategy for Reliable Load Shedding in the Direct-Current Microgrid
IEEE Access, 2020 This paper proposes a practical and reliable decentralized load shedding strategy to protect the integrity of the direct-current (DC) microgrid. The proposed strategy utilizes time delays that automatically adapt to the DC microgrid operating conditions ...
Jafar Mohammadi, Firouz Badrkhani Ajaei
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Under voltage load shedding using hybrid ABC-PSO algorithm for voltage stability enhancement
Heliyon, 2021 Voltage collapse tends to occur due to the voltage instability created during large faults. As a last resort, under-voltage load shedding (UVLS) is performed after all the available power operation and control mechanisms have been exhausted.
Susan Mumbi Kisengeu +2 more
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A Novel Decentralized Approach for Leveraging EVs in DC Microgrid Load Shedding [PDF]
, 2022 The load shedding would be the last option for maintaining the integrity of isolated microgrids in the event of an insufficient generation. In this paper, a novel decentralized adaptive timer-based approach is proposed to facilitate electric vehicles ...
Sanjari, Mohammad +11 more
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Adaptive under-frequency load shedding
Tsinghua Science and Technology, 2008 Abstracts Under-frequency load shedding (UFLS) is used in the power industry to rescue systems facing extreme disturbances to avoid system collapse. Traditionally, many computations are repeated to seek the proper power system settings such that the UFLS provides the desired good performance for selected scenarios.
Mingchui Dong +2 more
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Frontiers in Energy Research, 2022 Represented by wind turbines and ultra high-voltage DC (UHVDC), the power-electronic interfaced power sources participate in fast frequency control, which has a significant impact on the power system frequency.
Xingyang Wu +3 more
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Enhanced inflammation and suppressed adaptive immunity in COVID-19 with prolonged RNA shedding
Cell Discovery, 2022 Little is known regarding why a subset of COVID-19 patients exhibited prolonged positivity of SARS-CoV-2 infection. Here, we found that patients with long viral RNA course (LC) exhibited prolonged high-level IgG antibodies and higher regulatory T (Treg ...
Xiaohua Tang +31 more
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PLoS ONE, 2021 With the construction and development of ultra-high voltage (UHV) power grids, large-scale, long-distance power transmission has become common. A failure of the connecting line between the sending-end power grid and the receiving-end power grid will ...
Wentao Huang +5 more
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