Results 61 to 70 of about 2,466 (210)

Low Frequency Oscillations Suppression via CPSO based Damping Controller [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2007
In this paper, the Unified Power Flow Controller (UPFC) is enhanced with a Chaotic Particle Swarm Optimization (CPSO) Damping Controller in order to mitigate the Low Frequency Oscillations (LFO) in a Single Machine Infinite Bus (SMIB) power system.
N. Bigdeli, E. Ghanbaryan, K. Afshar
doaj  

Evaluation of optimal UPFC allocation for improving transmission capacity

open access: yesGlobal Energy Interconnection, 2020
A unified power flow controller (UPFC) combines the advantages of various flexible alternating current transmission system (FACTS) devices into a powerful format.
Xuhui Shen   +4 more
doaj   +1 more source

Optimal Location and Sizing of Static Var Compensator (SVC) to Improve Voltage Profile in Distribution Network

open access: yesEngineering Reports, Volume 7, Issue 10, October 2025.
Optimized placement of SVC in a 33‐bus distribution system improves voltage profile, increasing the voltage profile from 94.69% to 97.90%, ensuring voltages remain within acceptable limits (0.95–1.05 p.u.) using optimal capacitor sizing and location, enhancing system reliability and power quality.
Abere Takele Alemu   +1 more
wiley   +1 more source

Analysis of application effect of 220 kV UPFC demonstration project in Shanghai grid

open access: yesThe Journal of Engineering, 2019
The feasibility study of unified power flow controller (UPFC) application in 220 kV Shanghai Grid is conducted based on the analysis of the practical operation of the grid.
Yong Cui   +6 more
doaj   +1 more source

Matrix Converter-Based Unified Power-Flow Controllers: Advanced Direct Power Control Method [PDF]

open access: yes, 2011
This paper presents a direct power control (DPC) for three-phase matrix converters operating as unified power flow controllers (UPFCs). Matrix converters (MCs) allow the direct ac/ac power conversion without dc energy storage links; therefore, the MC ...
Monteiro, Joaquim   +3 more
core   +1 more source

Optimal Reactive Power Planning Using FACTS Devices for Voltage Stability Enhancement in Power Transmission Systems

open access: yesEnergy Science &Engineering, Volume 13, Issue 6, Page 2720-2756, June 2025.
Series and Shunt Reactive compensation can be used to improve voltage stability. The L‐index and Fast Voltage Stability Index are used to evaluate stability. Cost of reactive compensation is included directly in the optimization process. Multi‐objective optimization determines the optimal sizing of FACTS devices.
Rawan Abu Zeitawyeh, Ayman Faza
wiley   +1 more source

Application of UPFC in Fujian 500 kV power grid

open access: yesThe Journal of Engineering, 2019
In order to release the capability restriction of the North–South transmission channels in the 500 kV power grid of Fujian Province, this article studies the application of unified power flow controller (UPFC) to improve the transmission capability under
Meng Li   +7 more
doaj   +1 more source

MSTMM‐Validated Machining Efficiency and Surface Roughness Improvement Using Evolutionary Optimization Algorithm

open access: yesInternational Journal of Mechanical System Dynamics, Volume 5, Issue 2, Page 354-371, June 2025.
ABSTRACT Ultra‐precision machining (UPM) has been extensively employed for the production of high‐end precision components. The process is highly precise, and the associated cost of production is also high. Optimization of machining parameters in UPM can significantly improve machining efficiency and surface roughness. This study proposes an innovative
Adeel Shehzad   +5 more
wiley   +1 more source

Power Loss Reductions and Voltage profile improvement through Fuzzy and AO algorithm for effective system operation by optimal placement of UPFC [PDF]

open access: yesE3S Web of Conferences
This project's primary goal is to reduce power losses and improve voltage profiles in power networks by strategically using unified power flow controllers, or UPFCs.
Suryanarayana Reddy V.   +4 more
doaj   +1 more source

Full body harness [PDF]

open access: yes, 2020
The full body safety harness is a key part of an active fall arrest system. The harness serves two purposes, first, distributing fall forces safely across a worker's body in the event of a free fall, and second, providing freedom of movement sufficient ...
Che Senu, Nur Syazana   +2 more
core  

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