Results 31 to 40 of about 44,928 (304)

Energy Production Analysis and Optimization of Mini-Grid in Remote Areas: The Case Study of Habaswein, Kenya [PDF]

open access: yes, 2017
Rural electrification in remote areas of developing countries has several challenges which hinder energy access to the population. For instance, the extension of the national grid to provide electricity in these areas is largely not viable.
DEL CITTO, Riccardo   +8 more
core   +2 more sources

Reconceptualizing the Transmission Line Protection From the Perspective of IBR-Dominated Grid

open access: yesIEEE Access
This study evaluates the performance of distance relay in the presence of inverter-based resources. In particular, it investigated the dynamic response of an inverter-based resource that is endowed with low voltage ride through capability and the ...
Nikhil M Varghese, Manas Kumar Jena
doaj   +1 more source

Pseudo-gradient Based Local Voltage Control in Distribution Networks

open access: yes, 2015
Voltage regulation is critical for power grids. However, it has become a much more challenging problem as distributed energy resources (DERs) such as photovoltaic and wind generators are increasingly deployed, causing rapid voltage fluctuations beyond ...
Chen, Lijun   +2 more
core   +1 more source

Power Quality Enhancement in Electricity Grids with Wind Energy Using Multicell Converters and Energy Storage [PDF]

open access: yes, 2019
In recent years, the wind power industry is experiencing a rapid growth and more wind farms with larger size wind turbines are being connected to the power system.
Allali, Ahmed   +5 more
core   +2 more sources

Transient Stability Improvement of Large-Scale Photovoltaic Grid Using a Flywheel as a Synchronous Machine

open access: yesEnergies, 2023
The global climate protection policy aimed at achieving a zero greenhouse gas emissions target has led to the fast incorporation of large-scale photovoltaics into the power network.
Masilu Marupi   +3 more
doaj   +1 more source

Local Control of Reactive Power by Distributed Photovoltaic Generators [PDF]

open access: yes, 2010
High penetration levels of distributed photovoltaic (PV) generation on an electrical distribution circuit may severely degrade power quality due to voltage sags and swells caused by rapidly varying PV generation during cloud transients coupled with the ...
Backhaus, Scott   +3 more
core   +1 more source

Optimal protection coordination for directional overcurrent relays in radial distribution networks with inverter-based distributed energy resources

open access: yesInternational Journal of Electrical Power & Energy Systems
The optimal setting of directional overcurrent relays ensures the reliable protection and fast fault clearance of radial distribution networks. However, the increasing proliferation of inverter-based distributed energy resources can result in protection ...
Jie Li   +4 more
doaj   +1 more source

Multi-frequency coupled mechanism and propagation characteristics of subsynchronous oscillations induced by IBRs in power systems

open access: yesInternational Journal of Electrical Power & Energy Systems
Subsynchronous oscillations induced by inverter-based resources pose a significant threat to power system stability due to their wide propagation. This paper reveals a new propagation phenomenon of subsynchronous oscillations induced by inverter-based ...
Yanhui Xu, Yundan Cheng, Le Zheng
doaj   +1 more source

An Alternative Control Structure for Grid-Following Converters of Inverter-Based Resources

open access: yesIEEE Open Access Journal of Power and Energy, 2023
In this paper, an alternative control structure of grid-following control is proposed and applied in inverter-based resources (IBRs). An IBR’s grid-following control normally employs Power/Voltage (P/V) control strategy to control the output real ...
Zhixin Miao   +3 more
doaj   +1 more source

A voltage-source inverter for microgrid applications with an inner current control loop and an outer voltage control loop [PDF]

open access: yes, 2009
Distributed generation (DG) units are commonly inter-faced to the grid by using voltage-source inverters (VSI’s). Extension of the control of these inverters allows to improve the power quality if the main power grid is disturbed or disconnected. In this
De Belie, Frederik   +4 more
core   +1 more source

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