Results 21 to 30 of about 107,579 (316)

Electrical resistivity‐temperature characteristics enhancement of insulating cross‐linked polyethylene composites by incorporating positive temperature coefficient particles with different Curie temperatures

open access: yesHigh Voltage, 2023
Incorporating positive temperature coefficient (PTC) ceramic particles into polymers provides a prospective alternative solution for suppressing severe electric field distortions caused by negative temperature coefficient (NTC) of electrical resistivity ...
Guimin Jiang   +6 more
doaj   +1 more source

Generation of a mountain-valley wind in an atmospheric boundary wind tunnel: a gust-wind generator study

open access: yesAdvances in Bridge Engineering, 2023
AbstractAppropriate modeling of an experimental technology is necessary in order to estimate the aerodynamic characteristic of railway trains and infrastructure (e.g., bridges). Simulation of the earth’s wind characteristics of nature is a well-established practice by using an atmospheric boundary wind tunnel. However, in the mountainous area, the wind
Simin Zou, Xuhui He
openaire   +2 more sources

A low leakage current (Co, Mn, Ta)-SnO2 varistor tailored by doping with chromium for power grids

open access: yesResults in Physics, 2020
A SnO2 varistor which was prospected to be used in ultra-high voltages grids as an overvoltage protection element was developed. The SnO2 varistor was doped with Cr to improve the comprehensive electrical properties. The optimal electrical parameters are
Hongfeng Zhao   +4 more
doaj   +1 more source

Changes of cross-linked network and DC electrical properties of nanocomposite silicone rubber under thermal aging

open access: yesEnergy Reports, 2022
Nano dielectrics have brought hope for solving the problem of cable insulation at high voltage levels. In this paper, nano Al2O3 and MgO are doped to silicone rubber and the nanocomposites are aged at 200 °C for 0-80 days. The electrical conductivity and
Yunxiao Zhang   +3 more
doaj   +1 more source

No-load cutting-in control of the doubly fed induction generator based on grey prediction PI control

open access: yesEnergy Reports, 2021
The traditional method of stator flux oriented PI control of the doubly fed induction wind generator (DFIG) no-load cutting-in is easy to implement under ideal conditions, but in the actual project with high frequency of wind speed change, the feedback ...
Ping Jiang, Yanjun Xing, Peiguang Wang
doaj   +1 more source

Probabilistic evaluation of renewable energy curtailment under forward electricity market [PDF]

open access: yesE3S Web of Conferences, 2020
Forward electricity market has emerged as a pivotal section for the electricity transaction to keep stakeholders away from price risk and electricity shortage.
Jiang Jiheng   +6 more
doaj   +1 more source

An assessment of principles of access for wind generation curtailment in active network management schemes [PDF]

open access: yes, 2013
The growth of wind generation embedded in distribution networks is leading to the development and implementation of Active Network Management (ANM) strategies.
Kane, Laura   +5 more
core   +1 more source

Advanced Wind Turbine Program Next Generation Turbine Development Project: June 17, 1997--April 30, 2005 [PDF]

open access: yes, 2006
This document reports the technical results of the Next Generation Turbine Development Project conducted by GE Wind Energy LLC. This project is jointly funded by GE and the U.S. Department of Energy's National Renewable Energy Laboratory.The goal of this
GE Wind Energy, LLC
core   +1 more source

WIND-GENERATED LONGSHORE CURRENTS

open access: yesCoastal Engineering Proceedings, 1978
This paper evaluates, through the use of a stepwise multiple regression procedure, whether parameters descriptive of the surf-zone wave field adequately explain the variability in longshore current velocities, or if the inclusion of additional physical environmental parameters could significantly improve the ability to predict such currents.
Dag Nummedal, Robert J. Finley
openaire   +2 more sources

A quantitative analysis of the net benefits of grid integrated wind [PDF]

open access: yes, 2006
Paper presented at the IEEE PES General Meeting 2006, Montreal, Quebec, Canada, 18-22 June 2006Throughout the world significant development is being encouraged in wind energy for electricity generation.
G. Bryans   +7 more
core   +1 more source

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