Results 31 to 40 of about 852,682 (330)

Effect of Individual Volt/var Control Strategies in LINK-Based Smart Grids with a High Photovoltaic Share

open access: yesEnergies, 2021
The increasing share of distributed energy resources aggravates voltage limit compliance within the electric power system. Nowadays, various inverter-based Volt/var control strategies, such as cosφ(P) and Q(U), for low voltage feeder connected L(U) local
Daniel-Leon Schultis, Albana Ilo
doaj   +1 more source

Automatic Self-Adaptive Local Voltage Control Under Limited Reactive Power

open access: yesIEEE Transactions on Smart Grid, 2023
The increasing proliferation of distributed energy resources has posed new challenges to Volt/VAr control problems in distribution networks. To this end, this paper proposes an automatic self-adaptive local voltage control (ASALVC) by locally controlling VAr outputs of distributed energy resources.
Rui Cheng   +3 more
openaire   +2 more sources

PI-based controller for low-power distributed inverters to maximise reactive current injection while avoiding over voltage during voltage sags [PDF]

open access: yes, 2018
This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright.
Camacho Santiago, Antonio   +4 more
core   +2 more sources

Reactive power limit of wind farm with doubly-fed induction generators and its asymmetric P-Q dependence

open access: yesInternational Journal of Electrical Power & Energy Systems
The existing reactive power limit models of doubly-fed induction generators ignore the relation among wind speed, rotor speed, and active power output.
Shenghu Li
doaj   +1 more source

Optimal Location and Sizing of a D-STATCOM in Electrical Distribution Systems to Improve the Voltage Profile Considering the Restriction of Harmonic Injection through the JAYA Algorithm

open access: yesEnergies, 2023
This study focuses on the application of the JAYA algorithm to optimize the implementation and sizing of a distribution static synchronous compensator (DSTATCOM) in distribution systems to reduce power losses and enhance voltage profiles, ensuring a ...
Rony Alvaro   +2 more
doaj   +1 more source

Exact Results for Kinetics of Catalytic Reactions

open access: yes, 1995
The kinetics of an irreversible catalytic reaction on substrate of arbitrary dimension is examined. In the limit of infinitesimal reaction rate (reaction-controlled limit), we solve the dimer-dimer surface reaction model (or voter model) exactly in ...
B. U. Felderhof   +30 more
core   +1 more source

ADMM-based distributed optimal reactive power control for loss minimization of DFIG-based wind farms

open access: yesInternational Journal of Electrical Power & Energy Systems, 2020
In this paper, a distributed optimal reactive power control (DORPC) scheme is proposed for minimizing the total losses of doubly fed induction generator (DFIG)-based wind farms (WFs), including the losses of generators, converters, filters, and networks.
Sheng Huang   +4 more
semanticscholar   +1 more source

Behaviour of Distribution Grids with the Highest PV Share Using the Volt/Var Control Chain Strategy

open access: yesEnergies, 2019
The large-scale integration of rooftop PVs stalls due to the voltage limit violations they provoke, the uncontrolled reactive power flow in the superordinate grids and the information and communications technology (ICT) related challenges that arise in ...
Daniel-Leon Schultis, Albana Ilo
doaj   +1 more source

Optimized Hierarchical Power Oscillations Control for Distributed Generation Under Unbalanced Conditions

open access: yes, 2017
Control structures have critical influences on converter-interfaced distributed generations (DG) under unbalanced conditions. Most of previous works focus on suppressing active power oscillations and ripples of DC bus voltage.
Chen, Zhe   +4 more
core   +1 more source

Raise Voltage Stability Limit of a Power System using Reactive Power Compensation Technique

open access: yesInternational Journal of Innovative Technology and Exploring Engineering, 2019
In recent years, voltage stability problems have been increasing since power systems operate close to stability limits. The voltage stability problem of a power system is associated with a rapid voltage drop due to heavy system load and it occurs because of inadequate reactive power support at some critical bus.
V. Sundaravazhuthi*   +2 more
openaire   +2 more sources

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