Results 11 to 20 of about 14,764,212 (352)

Stabilization of grid frequency through dynamic demand control [PDF]

open access: yes, 2007
Frequency stability in electricity networks is essential to the maintenance of supply quality and security. This paper investigates whether a degree of built-in frequency stability could be provided by incorporating dynamic demand control into certain ...
Freris, Leon L.   +2 more
core   +4 more sources

A New Fractional-Order Virtual Inertia Support Based on Battery Energy Storage for Enhancing Microgrid Frequency Stability

open access: yesFractal and Fractional, 2023
Microgrids have a low inertia constant due to the high penetration of renewable energy sources and the limited penetration of conventional generation with rotating mass. This makes microgrids more susceptible to frequency stability challenges.
Morsy Nour   +6 more
semanticscholar   +1 more source

Conditions for Regional Frequency Stability in Power System Scheduling—Part I: Theory

open access: yesIEEE Transactions on Power Systems, 2021
This paper considers the phenomenon of distinct regional frequencies recently observed in some power systems. First, a reduced-order mathematical model describing this behaviour is developed.
Luis Badesa, Fei Teng, G. Strbac
semanticscholar   +1 more source

Primary Frequency Stability Support of a DFIG in Association With Pitch Angle Control

open access: yesFrontiers in Energy Research, 2022
For an electric power grid that has large penetration levels of variable renewable energy including wind generation and photovoltaics, the system frequency stability is jeopardized, which is manifest in lowering frequency nadir and settling frequency ...
Xiuli Si   +5 more
doaj   +1 more source

Characterization of frequency stability in precision frequency sources [PDF]

open access: yesProceedings of the IEEE, 1991
The authors present a short review of the progress that has occurred during years 1955-91 in both the theoretical and practical characterization of frequency stability of precision frequency sources. The emphasis is on the evolution of ideas and concepts for the characterization of random noise processes in such standards in the time domain and the ...
Rutman, Jacques, Walls, F. L.
openaire   +2 more sources

The infrastructure quality of GPS measurements [PDF]

open access: yesTehnika, 2015
The aim of this paper is to present and show the role of the law mentioned in GPS products as well as product quality verification by accredited metrology laboratory.
Ristić Kornelija T.   +2 more
doaj   +1 more source

Optimized Tilt Fractional Order Cooperative Controllers for Preserving Frequency Stability in Renewable Energy-Based Power Systems

open access: yesIEEE Access, 2021
The low system inertia and the high sensitivity to load and generation fluctuations represent the main challenges for future ambitious plans of modern power systems accompanied by high penetrations levels of the renewable energy sources (RESs). Therefore,
A. Elmelegi   +5 more
semanticscholar   +1 more source

Frequency Response in the Presence of Renewable Generation: Challenges and Opportunities

open access: yesIEEE Open Access Journal of Power and Energy, 2021
Due to their many advantages, renewable energy resources (RERs) are proliferating rapidly to satisfy a significant portion of the global energy demand. It is predicted that the importance of RER generation will continue to increase in the future of the ...
Nga Nguyen   +3 more
doaj   +1 more source

QUASI-DYNAMIC MODEL OF THE INTERCONNECTED POWER SYSTEM OF UKRAINE FOR A FREQUENCY STABILITY STUDY

open access: yesПраці Інституту електродинаміки Національної академії наук України, 2022
Significant integration of renewables into Ukraine's interconnected power system (IPS) requires developing the appro-priate quasi-dynamic (QD) model to study power system operation in such conditions.
V.V. Pavlovsky   +3 more
doaj   +1 more source

Frequency Stability Issues and Research Opportunities in Converter Dominated Power System

open access: yesEnergies, 2021
Stable power supply has become a crucial thing in the current era of technology and automation. Although the power system has multiple stability issues and causes, frequency fluctuation plays a vital role in normal operation, whereby a system with ...
A. Shrestha, F. Gonzalez-Longatt
semanticscholar   +1 more source

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