Results 61 to 70 of about 11,966 (258)

Optimum Location and Parameter Setting of STATCOM Based on Improved Differential Evolution Harmony Search Algorithm

open access: yesIEEE Access, 2020
Identification of the optimum location and capacity of Static Synchronous Compensator (STATCOM) in power grids has been given much attention to maximize its technical performance while minimizing operational cost.
Tao Zhang   +4 more
doaj   +1 more source

Adsorption‐Engineered Hydrocarbon Ionomers for Durable Proton‐Exchange Membrane Fuel Cells

open access: yesAdvanced Materials, EarlyView.
Hydrocarbon ionomers suffer from oxidation‐driven interfacial degradation in PEM fuel cell cathodes, leading to catalyst instability. Here, adsorption‐engineered poly(fluorene) ionomers decouple interfacial anchoring from oxidative degradation, enabling strong catalyst–ionomer interactions while resisting electrochemical oxidation.
Heemin Park   +14 more
wiley   +1 more source

A novel particle movement bee colony algorithm with Dynaflow controller for line loadability enhancement

open access: yesEngineering Science and Technology, an International Journal, 2020
The extended utilization of sustainable power sources leads to significantly impulsive and erratic power streams in the transmission networks. By executing power stream controlling devices, it is possible to extend transmission limit. This paper displays
Ragaleela Dalapati Rao   +1 more
doaj   +1 more source

Flexible AC transmission system devices: allocation and transmission pricing

open access: yesInternational Journal of Electrical Power & Energy Systems, 1999
The transmission of electricity differs from transportation of any typical commodity by some inherent aspects such as: the production needs to match the consumption at the same time; system control is not an easy task; the electricity flows do not usually follow the economic law.
E.J. de Oliveira   +2 more
openaire   +1 more source

Confinement‐Induced Donnan Potential Enables Sealed Hydrovoltaic Power From Microliter Water

open access: yesAdvanced Materials, EarlyView.
An ultrathin MXene/cellulose nanofiber (CNF) nanochannel‐based hydrovoltaic generator produces sustained direct current (DC) from a single microliter droplet under sealed operation. Asymmetric nanochannel confinement establishes a persistent ion gradient and a confinement‐induced Donnan potential, harvesting the interfacial free energy released upon ...
Sangyun Na   +10 more
wiley   +1 more source

Probabilistic Evaluation of Transient Stability of a Power System Incorporating a Unified Power Flow Controller

open access: yesJournal of King Saud University: Engineering Sciences, 2003
This paper presents a probabilistic based approach to evaluate transient stability of power systems incorporating a Unified Power Flow Controller (UPFC).
Saleh Aboreshaid
doaj   +1 more source

A Universal van der Waals Tunneling Injector for Monolayer CMOS

open access: yesAdvanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho   +17 more
wiley   +1 more source

Adaptability analysis of typical grounding fault detection methods in non-isolated flexible interconnected distribution networks

open access: yes电力工程技术
Non-isolated flexible interconnected distribution networks as the research object are explored, focusing on the adaptability issue of typical grounding fault detection methods when single-phase grounding faults occur in AC systems due to zero-sequence ...
Heming ZHANG   +5 more
doaj   +1 more source

2D Abrupt Nano‐Junctions Blending sp–sp2 Bonds on Atomically Precise Heterostructures

open access: yesAdvanced Materials, EarlyView.
A lateral heterostructure between atomically precise sp–sp2$^2$ metalated graphdiyne and sp2$^2$ graphene nanoribbons is realized by on‐surface synthesis and investigated by STM and DFT. The impact of on‐surface synthesis byproducts on covalent junction formation yield is unveiled.
Alice Cartoceti   +10 more
wiley   +1 more source

IMPROVING POWER SYSTEM QUALITY USING FLEXIBLE AC TRANSMISSION SYSTEMS [PDF]

open access: yesThe Egyptian International Journal of Engineering Sciences and Technology, 2011
M AbdulAal, A Mohamed
doaj   +1 more source

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