Results 61 to 70 of about 28,439 (245)
An Improved Algorithm for Optimal Load Shedding in Power Systems
Energies, 2018 A blackout is usually the result of load increasing beyond the transmission capacity of the power system. A collapsing system enters a contingency state before the blackout.
Raja Masood Larik +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.This study elucidates the mechanism of compressible flow exfoliation for producing 2D hexagonal boron nitride (h‐BN). Fluid dynamics analysis reveals that acceleration‐driven aerodynamic shear forces, rather than shock waves alone, drive effective layer separation.
Md Farhadul Islam +3 more
wiley +1 more source
Heat-pump performance: voltage dip/sag, under-voltage and over-voltage
The Journal of Engineering, 2014 Reverse cycle air-source heat-pumps are an increasingly significant load in New Zealand and in many other countries. This has raised concern over the impact wide-spread use of heat-pumps may have on the grid. The characteristics of the loads connected to
William J.B. Heffernan +2 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel +6 more
wiley +1 more source
GECM-Based Voltage Stability Assessment Using Wide-Area Synchrophasors
Energies, 2017 Voltage instability is a crucial issue in the secure operation of power grids. Several methods for voltage stability assessment were presented. Some of them are highly computationally intensive, while others are reported not to work properly under all ...
Heng-Yi Su, Tzu-Yi Liu
doaj +1 more source
Advanced Engineering Materials, EarlyView.Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann +4 more
wiley +1 more source
A Recap of Voltage Stability Indices in the Past Three Decades
Energies, 2019 Increasing demand for electricity and the modernization of power systems within competitive markets has induced power systems to operate close to their stability limits.
Mir Sayed Shah Danish +5 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.Phase‐changing liquids enable untethered pneumatic actuation in soft robotics but suffer from volatility and storage challenges. This work reports a simple method to encapsulate Novec 7000 within micron‐thin alginate shells via in situ injection and ionic crosslinking.
Rayan A. M. Basodan +3 more
wiley +1 more source
Static Voltage Stability Assessment of Electricity Networks Using an Enhanced Line-Based Index
EnergiesHigh penetration of renewable energy sources complicates static voltage stability assessment, as conventional line-based indices are typically derived under restrictive assumptions, such as neglecting voltage-angle differences or decoupling active and ...
Zhiquan Zhou +2 more
doaj +1 more source