Results 31 to 40 of about 7,698,340 (303)

Study on Leveraging Wind Farm Reactive Power Potential for Uncertain Power System Reactive Power Optimization

open access: yesCoRR, 2020
This paper suggests leveraging reactive power potential (RPP) embedded in wind farms to improve power system operational safety and optimality. First, three typical RPP provision approaches are analyzed and a two-stage robust linear optimization based RPP evaluation method is proposed. This approach yields an RPP range that ensures the security of wind
Yu Zhou, Zhengshuo Li
openaire   +3 more sources

Research on Multi-Objective Reactive Power Optimization of Power Grid With High Proportion of New Energy

open access: yesIEEE Access, 2022
The integration of large-scale wind power and photovoltaics into the power system will aggravate the voltage fluctuation of grid nodes, while when the reactive power of new energy units participates in the optimization of reactive power and voltage of ...
Yu Linlin   +4 more
doaj   +1 more source

Comparative Evaluation of Hemodiafiltration, Hemoperfusion, and Standard Hemodialysis on Efficacy, Inflammatory Control, Dialysis Adequacy, and Safety in End‐Stage Renal Disease: A Prospective Observational Study

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Chronic micro‐inflammation in patients with end‐stage renal disease (ESRD) is a significant driver of cardiovascular complications and diminished quality of life. While standard hemodialysis (SHD) effectively manages small‐molecule clearance, its ability to remove medium‐to‐large uremic toxins—the primary catalysts of systemic ...
Hongwei Zuo   +5 more
wiley   +1 more source

Security constrained reactive power dispatch in electrical power systems [PDF]

open access: yes, 1990
With the increased loading and exploitation of the power transmission system and also due to improved optimised operation, the problem of voltage stability and voltage collapse attracts more and more attention .
Chebbo, Ahmad Mustapha
core  

The ping-pang variable amplitude limiter used in the coordinated controller of a hybrid reactive power compensation system

open access: yesEnergy Reports, 2023
The hybrid reactive power compensation system, which connects different reactive power compensation devices to the same bus, will be essential equipment for future power systems.
Yuwei Peng
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Efficient State Estimation in Power Networks for Reactive Power Losses Compensation [PDF]

open access: yes, 2013
We consider the problem of optimal reactive power compensation for the minimization of power distribution losses in a smart microgrid with raw measurements. We provide two distributed estimation algorithms, one ADMM-based and one JACOBI-like, in order to
Di Vittorio, Alberto
core  

Transmission congestion management by optimal placement of FACTS devices [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University, 13/09/2010.This thesis describes the implementation of the Flexible AC Transmission Systems (FACTS) devices to develop a market-based approach to the ...
Zeraatzade, Mahbube
core   +7 more sources

An optimal reactive power pre-dispatch approach for minimizing active power losses

open access: yesFrontiers in Energy Research
Renewable energy sources (RES) depend on location and weather conditions, which can negatively impact the transmission system operator’s active power losses.
Daniel Baltensperger   +4 more
doaj   +1 more source

Dimensioning of Reactive Power Compensation in an Autonomous Island System

open access: yesApplied Sciences, 2022
In this paper, a method for sizing the reactive power compensation in a non-interconnected island power system is presented and applied to determine the necessary inductive reactive power compensation for the autonomous power system of Rhodes Island ...
Georgios N. Psarros   +2 more
doaj   +1 more source

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