Results 31 to 40 of about 1,382,969 (293)

Comparison of the dynamic response of wind turbine primary frequency controllers [PDF]

open access: yes2017 IEEE Power & Energy Society General Meeting, 2017
This paper presents a comparison of a variety of control strategies for the primary frequency control of wind power plants. These strategies include inertial as well as pitch angle regulators. The inertial control is sensitive to both the frequency variation through a standard droop control, and the rate of change of frequency.
João José Cerqueira   +4 more
openaire   +1 more source

The phase response of primary auditory afferents in a songbird (Sturnus vulgaris L.) [PDF]

open access: yes, 1988
The effects of stimulus frequency and intensity on phase-locking characteristics of cochlear ganglion cells were studied in the starling. All cells showed phase-locking to tone stimuli within their response area. Phase-locking at CF is found on average 9
Gleich, Otto, Narins, P. M.
core   +1 more source

System-wide inertial response from fixed speed and variable speed wind turbines [PDF]

open access: yes, 2011
IEEE PES 2011 General Meeting, Detroit, Michigan, USA, July 24-28, 2011As wind penetration levels on power systems increase worldwide, the dynamic characteristics of these systems are changing due to the displacement of synchronous generation. One issue,
Lisa Ruttledge   +3 more
core   +2 more sources

An extended modeling of frequency security constraints for unit commitment model

open access: yesEnergy Reports, 2023
Under the background of high proportion of renewable energy, the frequency security of the power system is facing challenges, which makes it necessary to consider and respond in the optimal dispatching. In this paper, the frequency security constraint is
Yao Wang   +5 more
doaj   +1 more source

Repetition enhancement for frequency-modulated but not unmodulated sounds: a human MEG study [PDF]

open access: yes, 2010
Background: Decoding of frequency-modulated (FM) sounds is essential for phoneme identification. This study investigates selectivity to FM direction in the human auditory system.
Christian F. Altmann   +17 more
core   +1 more source

Cyberattacks on Primary Frequency Response Mechanisms in Power Grids

open access: yesComputer, 2018
Primary frequency response (PFR) is an important mechanism for making power grids resilient to faults that could lead to outages. We present the first study of cyberattacks that could cause power outages by infiltrating operational technology networks in generation control systems to inhibit the PFR.
Varun Badrinath Krishna   +4 more
openaire   +1 more source

Using electric vehicle fleet as responsive demand for power system frequency support [PDF]

open access: yes, 2013
Based on conventional car driving patterns, it has been recognized that typically a car remains stationary for 95% of the time, only being driven on the road for the remaining 5% of that time on average.
Lei Wu   +7 more
core   +1 more source

Quantitative Frequency Security Assessment of Modern Power System Considering All the Three Indicators in Primary Frequency Response [PDF]

open access: yes, 2023
The primary frequency response scale is deteriorating in the modern power system due to the high penetration of different power devices. Frequency security assessments are essential for the operation or stability-checking of the power system.
Fei Tang   +4 more
core   +1 more source

Primary frequency response based rescheduling for enhancing microgrid resilience

open access: yesJournal of Modern Power Systems and Clean Energy, 2019
The existing microgrid operation schemes do not consider the dynamic performance of frequency in the islanded operation of microgrids. When an islanded microgrid encounters a disturbance, the sudden power mismatch could impose security risks or even a ...
Liang Che   +2 more
doaj   +1 more source

Influence of wind turbine inertia support on frequency drop characteristics of power grid

open access: yesZhejiang dianli, 2023
With the increasing penetration of new energy sources in large synchronous grids, renewable generator units that do not have inertial response capability may undermine the inertia of the system.
CHEN Longxiang   +5 more
doaj   +1 more source

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