Results 81 to 90 of about 120,545 (279)
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
Static Voltage Stability Analysis by Using SVM and Neural Network [PDF]
Journal of Intelligent Procedures in Electrical Technology, 2013 Voltage stability is an important problem in power system networks. In this paper, in terms of static voltage stability, and application of Neural Networks (NN) and Supported Vector Machine (SVM) for estimating of voltage stability margin (VSM) and ...
Mehdi Hajian +2 more
doaj
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
Special protection scheme against voltage collapse
IET Generation, Transmission & Distribution, 2016 The safe and continuous operation of power systems necessitates the implementation of special protection schemes (SPSs) against severe disturbances that may lead to a system breakdown. This study proposes a new SPS to mitigate voltage collapse against predetermined contingencies that can significantly lessen the voltage stability margin (VSM) of the ...
Mehdi Derafshian +2 more
openaire +1 more source
Advanced Engineering Materials, EarlyView.The results demonstrate a simulation‐driven workflow that applies LSB topology optimization with additive manufacturing constraints to mission‐specific load cases, integrating European Cooperation for Space Standardization compliant verification and manufacturability to develop structurally efficient rover suspension components.
Stelios K. Georgantzinos +11 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
Decentralized power system voltage stability proximity indicator based on local bus information [PDF]
, 2001 In this paper, a decentralized power system voltage stability proximity indicator is presented. This indicator can consider the occurrence of not only the saddle node bifurcation but also the Hopf bifurcation, while only local bus information is needed ...
Dai, H, Ni, Y, Wang, C, Wu, FF, Yu, Y
core
, 2012 A phenomenon of a periodic staircase of macroscopic jumps in the admitted magnetic field has been observed, as the magnitude of an externally applied magnetic field is smoothly increased or decreased upon a superconducting (SC) loop of type II niobium ...
Blatt F J +8 more
core +1 more source
Advanced Engineering Materials, EarlyView.A wood‐based magnetic and conductive material called Magwood (MW), capable of blocking almost 99.99% of electromagnetic waves (in the X‐band frequency range), is synthesized using a simple, solvent‐free process. MW is lightweight, resists water, and is flame‐retardant, making it a promising alternative for shielding electronics. The rapid proliferation
Akash Madhav Gondaliya +3 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