Results 41 to 50 of about 27,245 (281)

Stochastic Model for Power Grid Dynamics [PDF]

open access: yes, 2006
We introduce a stochastic model that describes the quasi-static dynamics of an electric transmission network under perturbations introduced by random load fluctuations, random removing of system components from service, random repair times for the failed
Anghel, Marian   +2 more
core   +2 more sources

Optimal Energy Dispatch of Distributed PVs for the Next Generation of Distribution Management Systems

open access: yesIEEE Open Access Journal of Power and Energy, 2020
Advanced Distribution Management Systems (ADMS) are being widely adopted by electric utilities for managing and optimizing the operations of their distribution systems.
Fei Ding   +4 more
doaj   +1 more source

Optimal Reactive Power Dispatch Considering Power Loss of Transformer [PDF]

open access: yesProceedings of the 2015 International Forum on Energy, Environment Science and Materials, 2015
A large proportion of power loss in distribution system is from transformer, which is not considered in the traditional Distribution network Reactive Power Optimization (DRPO). This paper proposes a DRPO model considering the power loss of transformer.
Chang min Shi   +3 more
openaire   +1 more source

Patterns of Postictal Abnormalities in Relation to Status Epilepticus in Adults

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Abnormalities on peri‐ictal diffusion‐weighted magnetic resonance imaging (DWI‐PMAs) are well‐established for patients with status epilepticus (SE), but knowledge on patterns of DWI‐PMAs and their prognostic impact is sparse. Methods This systematic review and individual participant data meta‐analysis included observational studies ...
Andrea Enerstad Bolle   +11 more
wiley   +1 more source

Coordinated Volt/Var Control in Distribution Systems with Distributed Generations Based on Joint Active and Reactive Powers Dispatch

open access: yesApplied Sciences, 2016
One of the most significant control schemes in optimal operation of distribution networks is Volt/Var control (VVC). Owing to the radial structure of distribution systems and distribution lines with a small X/R ratio, the active power scheduling affects ...
Abouzar Samimi, Ahad Kazemi
doaj   +1 more source

An Improved Heap-Based Optimizer for Optimal Reactive Power Dispatch

open access: yesIEEE Access, 2021
Optimal reactive power dispatch (ORPD) in a typical power system is a complicated multi-objective optimization problem. The proper modeling of the multi-objective optimization problem has a significant impact on system operation and control.
Salah K. Elsayed   +3 more
doaj   +1 more source

Diagnostic Use of Testing for Novel Murine Autoantibodies for Sjögren Disease in the Rheumatology Outpatient Setting

open access: yesArthritis Care &Research, EarlyView.
Objective The goal was to assess the diagnostic performance of three novel autoantibodies (NA) for Sjögren disease (SjD) by comparing NA prevalence in patients with SjD, other autoimmune rheumatic diseases (ARDs), nonspecific chronic sialadenitis (CS), and controls.
Chadwick R. Johr   +5 more
wiley   +1 more source

Safety of Prescription Nonsteroidal Anti‐inflammatory Drugs in Adults With Inflammatory Bowel Disease: Data From a Large Administrative Claims Cohort

open access: yesArthritis Care &Research, EarlyView.
Objective The concern that nonsteroidal anti‐inflammatory drugs (NSAIDs) may precipitate flares of inflammatory bowel disease (IBD) has limited their use in managing musculoskeletal symptoms in those with IBD, but safety data are mixed. Methods This retrospective cohort study included patients with IBD aged at least 18 years from Optum's deidentified ...
Adam S. Mayer   +4 more
wiley   +1 more source

Optimal Dispatch of Residential Photovoltaic Inverters Under Forecasting Uncertainties

open access: yes, 2014
Efforts to ensure reliable operation of existing low-voltage distribution systems with high photovoltaic (PV) generation have focused on the possibility of inverters providing ancillary services such as active power curtailment and reactive power ...
Dall'Anese, Emiliano   +3 more
core   +1 more source

Investigation of Laser Ablation and Brush Pre‐Treatments for AlCu Cold Roll Bonding in Oxygen‐Free Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
It is shown that laser ablation pretreatment under oxygen‐free conditions enables copper–aluminium bonding at significantly lower deformation degrees and improved properties compared to mechanical brushing. Laser ablation further increases interface contact area and induces favourable residual stress states and microstructural compatibility ...
Khemais Barienti   +11 more
wiley   +1 more source

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