Results 51 to 60 of about 26,369 (176)

Power System Frequency Response Enhancement Using Optimal Placement and Sizing of Battery Energy Storage Systems

Energies
The increasing penetration of converter-interfaced renewable energy sources has led to reduced system inertia and increased frequency stability challenges in modern power systems.
Louwrance Ngoma, Josiah Munda, Yskandar Hamam   +2 more
doaj   +1 more source

Flexible Frequency Response Strategy with Smooth Rotor Speed Recovery of a DFIG-Based Wind Turbine [PDF]

, 2023
Grid frequency must be regulated in its nominal range to guarantee the stable operation of an electric power grid. Excessive grid frequency excursions result in load shedding, grid frequency instability, or even synchronous generator damage.
Jiejie Huang, Xiaocen Xue, Shun Sang
core   +1 more source

Determination of the Required Power Response of Inverters to Provide Fast Frequency Support in Power Systems with Low Synchronous Inertia

Energies, 2020
The decommissioning of conventional power plants and the installation of inverter-based renewable energy technologies decrease the overall power system inertia, increasing the rate of change of frequency of a system (RoCoF). These expected high values of
Alejandro Rubio, Holger Behrends, Stefan Geißendörfer, Karsten von Maydell, Carsten Agert   +4 more
doaj   +1 more source

A generalized piecewise linear time‐variable droop frequency controller with adaptive parameters for de‐loaded wind turbine generators

IET Renewable Power Generation, 2022
This paper proposes a generalized piecewise linear time‐variable droop frequency controller with a ramp‐up period for a de‐loaded wind turbine generator.
You‐Ning Xu, Yu‐Chen Huang, Yi‐Wei Chen, Cheng‐Han Chuang, Yuan‐Yih Hsu   +4 more
doaj   +1 more source

2022 IEEE Power and Energy Society General Meeting (PESGM) [PDF]

, 2022
Frequency stability assessment is one critical aspect of power system security assessment. Traditional N-1 screening method is based on the simulations of a few typical daily and seasonal operation scenarios.
Jiang, Huaiguang, Zhu, Lin, Liu, Yilu, Mandich, Mirka, Yuan, Haoyu, Zeng, Chujie, Li, Hongyu, Xiao, Huangqing, Tan, Jin, Fabus, Summer, Zhang, Yingchen, You, Shutang, Zhao, Yinfeng, Cui, Yi   +13 more
core   +1 more source

Modal-based prediction of power system frequency response and frequency nadir

This paper introduces a novel approach for predicting system frequency response (SFR) and frequency nadir based on modal analysis. By decomposing the full system dynamic response, the method identifies dominant modes based on their participation in frequency behavior and derives a closed-form expression for the frequency trajectory.
Zelaya-Arrazabal, Francisco, Martinez-Lizana, Sebastian, Pulgar-Painemal, Héctor   +2 more
openaire   +2 more sources

Hybridization of battery with pico hydel for frequency regulation of microgrids using synchronverter control

IET Renewable Power Generation, 2022
Frequency regulation of autonomous microgrids with intermittent renewables is a tedious task, which requires additional support from energy storage systems (ESS).
Krishnakumar R. Vasudevan, Vigna K. Ramachandaramurthy, Gomathi Venugopal, Josep M. Guerrero   +3 more
doaj   +1 more source

PENINGKATAN FREKUENSI PENCITRAAN KAMERA MULTISPEKTRAL SATELIT LAPAN-A3/IPB MENGGUNAKAN MANUVER PENGAMATAN OFF-NADIR IMAGING FREQUENCY = IMPROVEMENT OF LAPAN-A3/IPB SATELLITE MULTISPECTRAL IMAGER USING OFF-NADIR OBSERVATION MANEUVER [PDF]

, 2017
Abstrak Satelit LAPAN-A3/IPB memiliki sebuah kamera multispektral untuk melakukan pemantauan wilayah Indonesia. Dengan ketinggian satelit 510 kilometer dan dengan lebar sapuan kamera sebesar 120 kilometer, secara teoritis kamera multispektral satelit ...
Satriya Utama, Patria Rachman Hakim
core  

The lodgepole × jack pine hybrid zone in Alberta, Canada: a stepping stone for the mountain pine beetle on its journey east across the boreal forest? [PDF]

Historical data show that outbreaks of the tree killing mountain pine beetle are often preceded by periods of drought. Global climate change impacts drought frequency and severity and is implicated in the range expansion of the mountain pine beetle into ...
Lusebrink, Inka, Evenden, Maya L., Erbilgin, Nadir   +2 more
core   +1 more source

Peakedness Effects in Near-Nadir Radar Observations of the Sea Surface [PDF]

, 2012
The simulation and interpretation of microwave sea radar return in the near-nadir region is still an issue in view of the limitations of the Geometrical Optics approximation and the multi-scale and non-Gaussian nature of the surface.
Bringer, Alexandra, Guérin, Charles-Antoine, Chapron, Bertrand, Mouche, Alexis   +3 more
core   +1 more source