Results 51 to 60 of about 90,461 (171)

Electrowetting-Induced Oil Film Entrapment and Instability [PDF]

, 2006
We investigate the spreading at variable rate of a water drop on a smooth hydrophobic substrate in an ambient oil bath driven by electrowetting. We find that a thin film of oil is entrapped under the drop.
Mugele, Frieder, Staicu, Adrian
core   +4 more sources

State-of-the-Art Methods for Electric Power Systems Voltage Stability Analysis

Sultan Qaboos University Journal for Science, 2000
This paper presents a literature survey on the subject of voltage stability analysis of power systems. The survey describes several published methods and techniques used to determine voltage stability indices.
T.M. Al-Khusaibi, K. A. Ellithy, M.R. Irving   +2 more
doaj   +1 more source

A Framework for Qualitative Analysis of Voltage Stability Indices (VSIs)

IEEE Access
Voltage stability assessment (VSA) is invariably an essential step in the satisfactory operation of power system. For this, several Voltage Stability Indices (VSIs) based on 1) Existence of solution for voltage equations, 2) Maximum power transfer (MPT ...
Lokesh Kumar Yadav, Mitresh Kumar Verma, Puneet Joshi, Sanjay Agrawal, Majed A. Alotaibi, Hasmat Malik, Fausto Pedro Garcia Marquez, Mohammad Asef Hossaini   +7 more
doaj   +1 more source

Observation of Supershell Structure in Alkali Metal Nanowires [PDF]

, 2000
Nanowires are formed by indenting and subsequently retracting two pieces of sodium metal. Their cross-section gradually reduces upon retraction and the diameters can be obtained from the conductance.
A. I. Yanson, A. I. Yanson, B. Ludoph, B. Ludoph, C. A. Stafford, C. Bréchignac, C. Höppler, C. J. Muller, C. Yannouleas, C. Yannouleas, E. Scheer, E. Scheer, F. Kassubek, H. E. van den Brom, H. Nishioka, I. K. Yanson, J. A. Torres, J. C. Cuevas, J. M. Krans, J. M. van Ruitenbeek, J. M. van Ruitenbeek, J. Pedersen, M. Brack, M. Brack, M. Brandbyge, M. Pellarin, R. Balian, S. Bjornholm, W. A. de Heer   +28 more
core   +3 more sources

New Performance Indices for Voltage Stability Analysis in a Power System

Energies, 2017
The frequent occurrence of voltage instability in a modern power system is alarming and thus, has been of great concern to power system utilities. In this paper, a new performance index based on the power flow solutions for voltage stability assessment ...
Isaiah Adebayo, Yanxia Sun
doaj   +1 more source

A New Global Index for Short Term Voltage Stability Assessment

IEEE Access, 2021
The utility scale of non-conventional generators (NCGs), such as wind and photovoltaic (PV) plants, are competitive alternatives to synchronous machines (SMs) for power generation.
Abdulrhman Alshareef, Rakibuzzaman Shah, N. Mithulananthan, S. Alzahrani   +3 more
doaj   +1 more source

Impact of integrating large-scale DFIG-based wind energy conversion system on the voltage stability of weak national grids: A case study of the Nigerian power grid

Energy Reports, 2021
This paper investigates the impact of integrating large-scale Doubly-Fed Induction Generator (DFIG)-based wind energy conversion system (WECS) on the voltage stability of the 52-bus, 330 kV Nigerian power grid.
Bukola Babatunde Adetokun, Christopher Maina Muriithi   +1 more
doaj   +1 more source

Using Support Vector Machine for Prediction Dynamic Voltage Collapse in an Actual Power System [PDF]

, 2008
—This paper presents dynamic voltage collapse prediction on an actual power system using support vector machines. Dynamic voltage collapse prediction is first determined based on the PTSI calculated from information in dynamic simulation
Hussain, Aini, Mohamed , Azah, Nizam , Muhammad   +2 more
core  

Stability of a horizontal viscous fluid layer in a vertical time periodic electric field

, 2017
The stability of a horizontal interface between two viscous fluids, one of which is conducting and the other is dielectric, acted upon by a vertical time-periodic electric field is considered.
Aditya Bandopadhyay, Kundu P., Leal L. G., Melcher J., Steffen Hardt   +4 more
core   +1 more source

Optimal Placement and Sizing of Distributed Generators Based on a Novel MPSI Index [PDF]

, 2014
The Objective: This paper presents a method to identify the optimal location and size of DGs based on the power stability index and particle swarm optimization (PSO) algorithm.Materials and methods: First, a novel maximum power stability index (MPSI) is ...
Abdalla, Ahmed N., Azah, Mohamed, Mohd Zamri, Che Wanik, Ruhaizad, Ishak   +3 more
core   +1 more source