Results 31 to 40 of about 19,719,110 (337)

Model Predictive Integrated Voltage and Frequency Support in Microgrids.

open access: yesProposed for presentation at the The 52nd North American Power Symposium held April 11-14, 2021., 2021
For the optimal performance of a microgrid where line resistance to reactance (R/X) ratio is high, one must consider the coupling between voltage and frequency. Furthermore, microgrid operational costs are time-varying. Thus, the voltage and frequency support controller must be flexible enough to handle technical and economic constraints. In this paper,
Niranjan Bhujel   +4 more
openaire   +2 more sources

A converter-assisting flexible switch topology and its control strategy

open access: yes电力工程技术, 2023
The rapid development of new energy in the distribution network increases its flexibility while making it more complicated to operate and manage the network.
FANG Rengcun   +5 more
doaj   +1 more source

Evaluation of the voltage support strategies for the low voltage grid connected PV generators

open access: yes2010 IEEE Energy Conversion Congress and Exposition, 2010
Peer ...
Demirok, Erhan   +4 more
openaire   +4 more sources

An Overview of Flexible Current Control Strategies Applied to LVRT Capability for Grid-Connected Inverters

open access: yesEnergies, 2023
Distributed power generation plays a critical role in the stability and reliability of modern power systems. Due to the rapid growth of renewable energy generation, the requirements of the transmission and distribution system operators are becoming more ...
David J. Rincon   +4 more
doaj   +1 more source

Active Distribution Grids Providing Voltage Support: The Swiss Case [PDF]

open access: yesIEEE Transactions on Smart Grid, 2020
The increasing installation of controllable Distributed Energy Resources (DERs) in Distribution Networks (DNs) opens up new opportunities for the provision of ancillary services to the Transmission Network (TN) level.
Stavros Karagiannopoulos   +3 more
semanticscholar   +1 more source

Cooperative Control Strategy for Power Quality Based on Heterogeneous Inverter Parallel System

open access: yesEnergies
Multi-functional grid-connected inverters (MFGCIs) have attracted much attention for their auxiliary services to improve power quality in microgrids and new energy generation systems.
Qing Wang   +4 more
doaj   +1 more source

Development of a Novel Control Scheme for Grid-Following Converter under Asymmetrical Faults

open access: yesEnergies, 2023
With the increasing penetration of converter-based power sources into the power system, the performance of the converter has become a key factor for enhancing grid reliability, especially during asymmetrical faults.
Muhammad Abubakar   +2 more
doaj   +1 more source

A voltage sag supporter utilizing a PWM-switched autotransformer [PDF]

open access: yes2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551), 2004
This paper describes a novel distribution-level voltage control scheme that can compensate voltage sag and swell conditions in three-phase power systems. Faults occurring in power distribution systems or facilities in plants generally cause the voltage sag or swell. Sensitivity to voltage sags and swells varies within different applications.
Dong-Myung Lee   +4 more
openaire   +2 more sources

Coordination Strategy of Large-Scale DFIG-Based Wind Farm for Voltage Support With High Converter Capacity Utilization

open access: yesIEEE Transactions on Sustainable Energy, 2021
Due to the long-distance transmission, external grid cannot effectively support the access point voltage (APV) of the large-scale wind farm (WF), which thus entails DFIG-based WF to provide its ancillary services on reactive power generation. Considering
Zhen Dong   +4 more
semanticscholar   +1 more source

Analysis of voltage support by electric vehicles and photovoltaic in a real Danish low voltage network [PDF]

open access: yes2014 49th International Universities Power Engineering Conference (UPEC), 2014
With conventional generating units being replaced by renewable sources which are not required to provide same high level of ancillary services, there is an increasing need for additional resources to achieve certain standards regarding frequency and voltage. This paper investigates the potential of incorporating electric vehicles (EVs) in a low voltage
Knezovic, Katarina   +5 more
openaire   +2 more sources

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