Results 1 to 10 of about 3,143,983 (204)

A Configurable Real-Time Event Detection Framework for Power Systems Using Swarm Intelligence Optimization

IEEE Access
Power system balancing authorities are routinely affected by sudden frequency fluctuations. These frequency events can take the form of negligible frequency deviations or more severe emergencies that can precipitate cascading outages, depending on the ...
Umar Farooq, Midrar Adham, Mohammed Alsaid, Robert B. Bass   +3 more
doaj   +1 more source

On equilibrium tides in fully convective planets and stars

, 2003
We consider the tidal interaction of a fully convective primary star and a point mass. Using a normal mode decomposition we calculate the evolution of the primary angular velocity and orbit for arbitrary eccentricity e.
Alexander, Chandrasekhar, Christensen-Dalsgaard, Darwin, Eggleton, Friedman, Giuricin, Giuricin, Goldman, Goldreich, Goldreich, Hurley, Hut, Ivanov, J. C. B. Papaloizou, Kumar, Lai, Lynden-Bell, Marcy, Mardling, Mardling, Ogilvie, P. B. Ivanov, Papaloizou, Papaloizou, Press, Tassoul, Vorontsov, Zahn, Zahn   +29 more
core   +1 more source

Forced response analysis of high-mode vibrations for mistuned bladed discs with effective reduced-order models [PDF]

, 2015
This paper is focused on the analysis of effects of mistuning on the forced response of gas-turbine bladed discs vibrating in the frequency ranges corresponding to higher modes.
Duan, Yongliang, Petrov, Yevgen, Zang, Chaoping   +2 more
core   +1 more source

Battery Energy Storage Systems: Energy Market Review, Challenges, and Opportunities in Frequency Control Ancillary Services

Energies
Battery energy storage systems (BESS) are considered a good energy source to maintain supply and demand, mitigate intermittency, and ensure grid stability.
Gian Garttan, Sanath Alahakoon, Kianoush Emami, Shantha Gamini Jayasinghe   +3 more
doaj   +1 more source

Primary frequency response for wind turbines

, 2021
This document aims to provide basic knowledge on wind turbine generation system modelling, including mechanical and electrical systems. The documents explain the principles of aerodynamics and mechanics taken place in wind turbines, how operation and control of wind generation systems commonly used using pitch angle controller and angular speed ...
openaire   +1 more source

Seismic response of nonstructural components in case of nonlinear structures based on floor response spectra method [PDF]

, 2018
This paper investigates the response of nonstructural components in the presence of nonlinear behavior of the primary structure using floor response spectra method (FRS).
Favez, Pascale, Lestuzzi, Pierino, Oropeza, Marcelo   +2 more
core  

A unified framework for co-optimization of PFR and FFR reserves using linearized tri-criteria frequency constraints

International Journal of Electrical Power & Energy Systems
The increasing penetration of inverter-based resources reduces system inertia and heightens concerns about frequency stability. This paper proposes a systematic methodology for jointly optimizing primary frequency response (PFR) and fast frequency ...
Jongin Kim, Jae Woong Shim, Hunyoung Shin   +2 more
doaj   +1 more source

Effects of motor–generator pair system on improving inertial response and primary frequency regulation capability of renewable energy

IET Renewable Power Generation, 2021
The increasing penetration of renewable energy leads to the decrease of inertia and damping for replacing conventional power plants. The motor–generator pair (MGP) is proposed to improve inertial response and frequency regulation capability for the ...
Yujun Gu, Yongzhang Huang, Chenyang Li, Fei Guan, Wenqi Fu, Yang Zhan, Haisen Zhao   +6 more
doaj   +1 more source

New frequency stability assessment based on contribution rates of wind power plants

International Journal of Electrical Power & Energy Systems
In future power systems, various generation units are expected to contribute to frequency stability. Depending on their characteristics, these units will support the frequency stability in diverse ways.
SungHoon Lim, KangWon Seo, Jung-Wook Park, Kwang Y. Lee   +3 more
doaj   +1 more source

Characterization of a Fast Battery Energy Storage System for Primary Frequency Response

Energies, 2018
In response to increasing integration of renewable energy sources on electric grid systems, battery energy storage systems (BESSs) are being deployed world-wide to provide grid services, including fast frequency regulation.
Karl Stein, Moe Tun, Marc Matsuura, Richard Rocheleau   +3 more
doaj   +1 more source