Results 61 to 70 of about 3,509,685 (196)

Theoretical Integrated Electric Quantity of Primary Frequency Control

open access: yesJournal of Physics: Conference Series, 2022
Abstract At present, the qualification rate of primary frequency control of hydropower units in the southwest power grid is low. The current grid has defects in the calculation method of the theoretical integral power of primary frequency control of hydropower units.
openaire   +1 more source

A Comprehensive Approach to Evaluate Frequency Control Strength of Power Systems

open access: yesIEEE Open Access Journal of Power and Energy
This industry-oriented paper introduces the concept of ‘frequency control strength’ as a novel approach to understand how different real-world power systems compare to each other in terms of effectiveness and performance of system-wide ...
Taulant Kerci, Federico Milano
doaj   +1 more source

Application of a LiFePO4 Battery Energy Storage System to Primary Frequency Control: Simulations and Experimental Results

open access: yesEnergies, 2016
This paper presents an experimental application of LiFePO4 battery energy storage systems (BESSs) to primary frequency control, currently being performed by Terna, the Italian transmission system operator (TSO).
Fabio Massimo Gatta   +7 more
doaj   +1 more source

Fast Frequency Support From Wind Turbine Systems by Arresting Frequency Nadir Close to Settling Frequency

open access: yesIEEE Open Access Journal of Power and Energy, 2020
The recent power cut incident in the UK on 9th August 2019 indicated that frequency control to raise frequency nadir and eliminate frequency second dip is highly desirable for power grids with high penetration of wind energy.
Xianxian Zhao, Ying Xue, Xiao-Ping Zhang
doaj   +1 more source

Decentralized Demand Side Participation in Primary Frequency Control: Assessing the Impact of Response Rates

open access: yesIEEE Access, 2023
Increasing renewable energy generation is leading to reduced inertia in electric power systems. This challenges conventional frequency control methods, as frequency deviations become faster and more pronounced. One possible approach to maintaining system
Leo Casasola-Aignesberger   +1 more
doaj   +1 more source

Understanding Pound-Drever-Hall locking using voltage controlled radio-frequency oscillators: An undergraduate experiment

open access: yes, 2011
We have developed a senior undergraduate experiment that illustrates frequency stabilization techniques using radio-frequency electronics. The primary objective is to frequency stabilize a voltage controlled oscillator to a cavity resonance at 800 MHz ...
Arfken G.   +9 more
core   +1 more source

Spatial and seasonal patterns of FMD primary outbreaks in cattle in Zimbabwe between 1931 and 2016 [PDF]

open access: yes, 2019
Foot and mouth disease (FMD) is an important livestock disease impacting mainly intensive production systems. In southern Africa, the FMD virus is maintained in wildlife and its control is therefore complicated.
Bourgarel, Mathieu   +10 more
core   +3 more sources

Decentralized Primary Frequency Control in Power Networks

open access: yes, 2014
We augment existing generator-side primary frequency control with load-side control that are local, ubiquitous, and continuous. The mechanisms on both the generator and the load sides are decentralized in that their control decisions are functions of locally measurable frequency deviations.
Zhao, Changhong, Low, Steven
openaire   +2 more sources

Wind Turbines Emulating Inertia and Supporting Primary Frequency Control

open access: yesIEEE Transactions on Power Systems, 2006
The increasing penetration of variable-speed wind turbines in the electricity grid will result in a reduction of the number of connected conventional power plants. This will require changes in the way the grid frequency is controlled. In this letter, a method is proposed to let variable-speed wind turbines emulate inertia and support primary frequency ...
Morren, J. (author)   +3 more
openaire   +3 more sources

Performance enhancement and optimization of primary frequency regulation of coal‐fired units under boundary conditions

open access: yesEnergy Science & Engineering
Under the dual‐carbon goal, due to the long‐term operation of thermal power units under wide load and frequent fluctuating load after heat supply transformation, the dynamic process of subcritical units is modeled, and a frequency modulation optimization
Jingqiu Kang   +8 more
doaj   +1 more source

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