Results 41 to 50 of about 913,242 (189)

Risk assessment of demand response considering wind power generation

open access: yesThe Journal of Engineering, 2018
Demand response can reduce peak load, transfer part of peak load to valley load, and reduce system risk at peak time. In this study, a calculation model of power grid loss risk is proposed, which is suitable for evaluating the risk changes caused by the ...
Min Lei   +4 more
doaj   +1 more source

Predictive Reliability Assessment of Generation System

open access: yesEnergies, 2020
Due to increasing load and characteristic stagnation and fluctuations of existing generation systems capacity, the reliability assessment of generation systems is crucial to system adequacy. Furthermore, a rapid load increase could amount to a consequent
Martin Onyeka Okoye   +8 more
doaj   +1 more source

Nonlinear Buckling of Fixed Functionally Graded Material Arches Under a Locally Uniformly Distributed Radial Load

open access: yesFrontiers in Materials, 2021
Functionally graded material (FGM) arches may be subjected to a locally radial load and have different material distributions leading to different nonlinear in-plane buckling behavior.
Hanwen Lu   +4 more
doaj   +1 more source

A Generalized Index for Static Voltage Stability of Unbalanced Polyphase Power Systems including Th\'evenin Equivalents and Polynomial Models [PDF]

open access: yes, 2019
This paper proposes a Voltage Stability Index (VSI) suitable for unbalanced polyphase power systems. To this end, the grid is represented by a polyphase multiport network model (i.e., compound hybrid parameters), and the aggregate behavior of the devices
Kettner, Andreas Martin, Paolone, Mario
core   +2 more sources

Correlation between uniaxial compression strength and point load index for Irish Caledonian granites

open access: yes, 2022
While the Uniaxial Compression Strength (UCS) test is the gold standard for determining the UCS of rock for geotechnical and mining applications, empirical correlations between UCS and other test measurements are useful in situations where intact cores are difficult to retrieve and/or the scope of UCS testing is constrained by budget.
McCabe, Bryan A.   +2 more
openaire   +2 more sources

An Advanced Three-Level Active Neutral-Point-Clamped Converter With Improved Fault-Tolerant Capabilities [PDF]

open access: yes, 2017
A resilient fault-tolerant silicon carbide (SiC) three-level power converter topology is introduced based on the traditional active neutral-point-clamped converter.
He, Jiangbiao   +2 more
core   +1 more source

The creep behavior of simple structures with a stress range-dependent constitutive model [PDF]

open access: yes, 2012
High temperature design remains an issue for many components in a variety of industries. Although finite element analysis for creep is now an accessible tool, most analyses outside the research domain use long standing and very simple constitutive models
Boyle, James
core   +1 more source

OPTIMAL LOAD SHEDDING BASED ON LINE VOLTAGE STABILITY INDEX USING HARMONY SEARCH ALGORITHM [PDF]

open access: yesJournal of Engineering Science and Technology, 2015
Modern power systems have been operated close to their limits for reasons of economic viability. Consequently, a small increase in the load may lead to the Maximum Loading Point (MLP) of the system resulting in voltage collapse. Under such circumstances,
R. MAGESHVARAN, T. JAYABARATHI
doaj  

Load transfer Ubistar(U**) calculation in structures under dynamic loading

open access: yesNihon Kikai Gakkai ronbunshu, 2021
Owing to environmental concerns, fuel conservation and weight reduction are considered to be crucial problems in the automobile industry. Moreover, safety is an important issue, and thus studies on reducing injuries to vehicle occupants are very ...
Masaki OMIYA, Kunihiro TAKAHASHI
doaj   +1 more source

Point load index' users guide: computer calculation of point load indices and rock strengths using an IBM-PC/AT

open access: yes, 1986
Le présent rapport donne une description du programme "POINT LOAD INDEX" (indice de charge ponctuelle) qui permet de calculer l'indice de charge ponctuelle, l'indice normalisé (Is - NX équivalent à la dimension de l'échantillon) ainsi que la résistance à la compression et à la traction uniaxiales.
M Issard, T R C Aston
openaire   +1 more source

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