Results 91 to 100 of about 46,083 (304)

A load-shedding preplan strategy for unplanned microgrid islanding considering frequency security constraints

open access: yesInternational Journal of Electrical Power & Energy Systems
Due to the limited inertial support capability and insufficient dispatchable generation resources (such as energy storage and backup units), microgrids struggle to quickly balance power during unexpected unplanned islanding events, leading to severe ...
Jie Liu   +4 more
doaj   +1 more source

Counterion Dependent Side‐Chain Relaxation Stiffens a Chemically Doped Thienothiophene Copolymer

open access: yesAdvanced Functional Materials, EarlyView.
Oxidation of a thienothiophene copolymer, p(g3TT‐T2), via different doping strategies and dopant molecules resulted in materials with similar oxidation levels and a high electrical conductivity of ≈100 S cm−1. However, mechanical properties varied significantly, with sub‐glass transition temperatures and elastic moduli spanning from –44°C to –3°C and ...
Mariavittoria Craighero   +12 more
wiley   +1 more source

Adaptive and optimal under frequency load shedding

open access: yes, 2008
Power systems in many countries are stressed towards their stability limit. If these stable systems experience any unexpected serious contingencies, or disturbances, there is a significant risk of instability, which may lead to wide-spread blackout ...
Zhang, Jing   +4 more
core  

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

open access: yesAdvanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo   +7 more
wiley   +1 more source

Principle of the under-frequency load shedding.

open access: yes, 2021
Principle of the under-frequency load shedding.
Zhijun Yuan (11820044)   +5 more
core   +1 more source

Swelling‐Programmed Topographical Guidance for Dynamic Spheroid Self‐Assembly via a Mechanochemical Hydrogel Niche

open access: yesAdvanced Functional Materials, EarlyView.
A swelling‐programmed micropatterned hydrogel guides adherent cells through a controlled transition from cell–matrix anchoring to cadherin‐mediated cell–cell compaction, enabling rapid assembly of high‐viability spheroids with defined size and morphology.
Han Gyeol Nam   +8 more
wiley   +1 more source

Ajuste de carga para a restauração das soluções do fluxo de potência via métodos baseados em região de confiança [PDF]

open access: yes, 2012
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico. Programa de Pós-Graduação em Engenharia Elétrica.Este trabalho aborda o estudo e o desenvolvimento de metodologias para a obtenção de soluções corretivas para a ...
Rheinheimer, Caroline
core  

Minimal Load Shedding Using the Swing Equation

open access: yes, 2016
Load shedding constitutes the very last resort for preventing total blackouts and cascading events. Conventional load shedding schemes, which are massively applied in industrial practice, adopt a step-wise approach that usually causes overshedding or ...
Tofis Yiannis   +2 more
core   +1 more source

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