Results 91 to 100 of about 665,210 (344)

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

open access: yesAdvanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou   +8 more
wiley   +1 more source

Linear Optimal Power Flow Using Cycle Flows

open access: yes, 2018
Linear optimal power flow (LOPF) algorithms use a linearization of the alternating current (AC) load flow equations to optimize generator dispatch in a network subject to the loading constraints of the network branches.
Brown, Tom   +3 more
core   +1 more source

Achieving AC Power Flow Convergence Through Generator Active Power Re-Dispatch

open access: yesRE&PQJ
The importance of a converged AC power flow (ACPF) case cannot be overstated, as it forms the foundation of other power systems studies. However, achieving a converged power flow model can be particularly difficult due to the nonlinear nature of the power flow equations.
null Samuel N Okhuegbe   +3 more
openaire   +1 more source

Solar Heating Enhanced Selective Recovery of Metal Ions Through Flowing Electrodes Enabled by Hybrid Carbon Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
A new electrochemical system based on a microporous hybrid of carbon nanoplatelets and nanotubes to selectively capture Ni2+ from wastewater is constructed. The system temperature rises rapidly when irradiated with sunlight, which enhances the Ni2+ removal rate by 250% and the selectivity by 53%, and the energy consumption is also reduced by 51 ...
Ziquan Wang   +11 more
wiley   +1 more source

Inter-Provincial Tie-Line Power Assessment Mechanism and Model for Spot Market

open access: yesShanghai Jiaotong Daxue xuebao
Multiple regional power grids in China have adopted the control performance standard (CPS) to assess the performance of inter-provincial tie-line operations, which has played a significant role in the reduction of both power deviation on inter-provincial
CHEN Zijie, SONG Bingbing, LI Yutong, WANG Lifeng, TENG Xiaobi, YAN Zheng, CHEN Sijie
doaj   +1 more source

Impact of Forecast Errors on Expansion Planning of Power Systems with a Renewables Target

open access: yes, 2014
This paper analyzes the impact of production forecast errors on the expansion planning of a power system and investigates the influence of market design to facilitate the integration of renewable generation.
Boomsma, Trine Krogh   +2 more
core   +1 more source

Power Dispatching Considering Copula Correlation of Multiple Wind Farms Generation

open access: yesIOP Conference Series: Earth and Environmental Science, 2020
Abstract The dynamic economic dispatching of power system connected with multiple wind farms is a typical stochastic programming problem. How to model the randomness of wind power and how to solve this complex stochastic optimization problem are the key points.
Lu Yao   +5 more
openaire   +1 more source

Melt Grafting of Geometry‐Tailored Voltage Stabilizers for High‐Performance Polypropylene Insulation

open access: yesAdvanced Functional Materials, EarlyView.
A scalable one‐step melt grafting strategy is developed to enhance the dielectric properties of isotactic polypropylene by covalently incorporating thermally stable aromatic voltage stabilizers. This solvent‐free approach improves volume resistivity and DC breakdown strength through deep trap formation and charge localization, offering a sustainable ...
Nazirul Mubin bin Normansah   +9 more
wiley   +1 more source

Multilayer Soft Photonic Arrays Inspired by Cephalopod Skin for High‐Density, Independent, and Multimodal Actuation

open access: yesAdvanced Functional Materials, EarlyView.
A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim   +11 more
wiley   +1 more source

Improved generation dispatch in power systems

open access: yes, 1990
Imperial Users ...
McNamara, Fergal, McNamara, Fergal
openaire   +1 more source

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