Results 31 to 40 of about 916,477 (341)

The Benefits of Hydrogen Energy Transmission and Conversion Systems to the Renewable Power Grids: Day-ahead Unit Commitment [PDF]

open access: yesarXiv, 2022
The curtailment of renewable energy is more frequently observed as the renewable penetration levels are rising rapidly in modern power systems. It is a waste of free and green renewable energy and implies current power grids are unable to accommodate more renewable sources.
arxiv  

An Insurance Contract Design to Boost Storage Participation in the Electricity Market [PDF]

open access: yes, 2020
Energy storage technologies are key to improving grid flexibility in the presence of increasing amounts of intermittent renewable generation. We propose an insurance contract that suitably compensates energy storage systems for providing flexibility.
arxiv   +1 more source

Towards Low-carbon Power Networks: Optimal Integration of Renewable Energy Sources and Hydrogen Storage [PDF]

open access: yesarXiv, 2022
This paper proposes a new optimization model and solution method for determining optimal locations and sizing of renewable energy sources and hydrogen storage in a power network. We obtain these strategic decisions based on the multi-period alternating current optimal power (AC OPF) flow problem that considers the uncertainty of renewable output ...
arxiv  

Review of the DC voltage coordinated control strategies for multi-terminal VSC-MVDC distribution network

open access: yesThe Journal of Engineering, 2019
The multi-terminal voltage sourced converter medium-voltage DC (VSC-MVDC) distribution network has high prospects for future development, hence the proposed alternative for the AC distribution in commercial and industrial applications.
Patrobers Simiyu   +6 more
doaj   +1 more source

An optimal phase control method for the suppression of phase sequence exchange impulse current and voltage

open access: yesIET Power Electronics, 2022
Phase sequence exchange (PSE) is an emerging emergency control method for power systems. However, PSE will generate impulse current and voltage. In this research, to suppress the impulse of PSE, a phase control method for zero‐current opening and equal ...
Yifan Li   +4 more
doaj   +1 more source

KSEMAW: an open source software for the analysis of spectrophotometric, ellipsometric and photothermal deflection spectroscopy measurements [version 2; peer review: 2 approved]

open access: yesOpen Research Europe, 2023
The optical behavior of devices based on thin films is determined by complex refractive index and thickness of each slab composing the stack; these important parameters are usually evaluated from photometric and/or ellipsometric spectral measurements ...
Alberto Mittiga   +3 more
doaj  

Quantifying the multi-scale and multi-resource impacts of large-scale adoption of renewable energy sources [PDF]

open access: yesarXiv, 2023
The variability and intermittency of renewable energy sources pose several challenges for power systems operations, including energy curtailment and price volatility. In power systems with considerable renewable sources, co-variability in renewable energy supply and electricity load can intensify these outcomes. In this study, we examine the impacts of
arxiv  

The use of geoinformation technologies for renewable energy and regional aspects of developing renewable energy in Russia

open access: yesEPJ Web of Conferences, 2014
The work presents the results of development of the geoinformation system “Renewable Energy Sources of Russia”. Regional maps of installations and resources are presented.
Rafikova Y.Y.   +3 more
doaj   +1 more source

Examination on the parameter stability region of the VSC control system in VSC-HVDC transmission systems

open access: yesThe Journal of Engineering, 2019
Nowadays, the voltage source converter (VSC)-based high-voltage direct current (HVDC) transmission technology is widely adopted for the integration of renewable power generations.
Long Xu   +5 more
doaj   +1 more source

Influence of N2 pressure on surface discharge characteristics of PEEK under positive repetitive square voltage

open access: yesHigh Voltage, 2021
PEEK (polyetheretherketone) and N2 are used in the packaging of high‐voltage power electronics as the frame material and insulation gas, respectively. The surface discharge behaviours of PEEK in N2 under positive repetitive square voltage are the main ...
Ye Li   +4 more
doaj   +1 more source

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