Results 21 to 30 of about 14,764,212 (352)

Planar-Waveguide External Cavity Laser Stabilization for an Optical Link with 1E-19 Frequency Stability [PDF]

open access: yes, 2011
We stabilized the frequency of a compact planar-waveguide external cavity laser (ECL) on a Fabry-P\'erot cavity (FPC) through a Pound-Drever-Hall scheme.
Davide Calonico   +23 more
core   +1 more source

Conditions for Regional Frequency Stability in Power System Scheduling—Part II: Application to Unit Commitment

open access: yesIEEE Transactions on Power Systems, 2021
In Part I of this paper we have introduced the closed-form conditions for guaranteeing regional frequency stability in a power system. Here we propose a methodology to represent these conditions in the form of linear constraints and demonstrate their ...
Luis Badesa, Fei Teng, G. Strbac
semanticscholar   +1 more source

Enabling Technologies for Enhancing Power System Stability in the Presence of Converter-Interfaced Generators

open access: yesEnergies, 2022
The growing attention to environmental issues is leading to an increasing integration of renewable energy sources into electrical grids. This integration process could contribute to power system decarbonization, supporting the diversification of primary ...
Giorgio M. Giannuzzi   +4 more
doaj   +1 more source

Frequency Stability Assessment of Grid-Forming VSG in Framework of MPME With Feedforward Decoupling Control Strategy

open access: yesIEEE transactions on industrial electronics (1982. Print), 2021
Virtual synchronous generator (VSG), recognized as a grid-friendly control technique, contributes to providing inertia and damping support from the grid-tied power electronic systems. However, similar to the conventional synchronous generator, the VSG is
Chang Li   +3 more
semanticscholar   +1 more source

Frequency Trajectory Planning Based Strategy for Improving Frequency Stability of Droop-Controlled Inverter Based Standalone Power Systems

open access: yesIEEE Journal on Emerging and Selected Topics in Circuits and Systems, 2021
Inverter-based standalone power systems (ISPSs), with limited inertia/damping, are prone to significant changes in frequency indicators encompassing frequency deviation and rate of change of frequency (RoCoF), which can easily exceed the pertinent relay ...
L. Xiong   +3 more
semanticscholar   +1 more source

The Role of Fast Frequency Response of Energy Storage Systems and Renewables for Ensuring Frequency Stability in Future Low-Inertia Power Systems

open access: yesSustainability, 2021
Renewable generation technologies are rapidly penetrating electrical power systems, which challenge frequency stability, especially in power systems with low inertia. To prevent future instabilities, this issue should already be addressed in the planning
Pablo González-Inostroza   +5 more
semanticscholar   +1 more source

Multi-Timescale Control of Variable-Speed Wind Turbine for Inertia Provision

open access: yesApplied Sciences, 2022
The increasing deployment of power converters has led to a significant reduction in the power system inertia and consequently resulted in frequency stability issues.
Zixiao Xu   +3 more
doaj   +1 more source

ALADIN laser frequency stability and its impact on the Aeolus wind error

open access: yesAtmospheric Measurement Techniques, 2021
. The acquisition of atmospheric wind profiles on a global scale was realized by the launch of the Aeolus satellite, carrying the unique Atmospheric LAser Doppler INstrument (ALADIN), the first Doppler wind lidar in space.
O. Lux   +12 more
semanticscholar   +1 more source

Frequency stability in resonator-stabilized oscillators [PDF]

open access: yesIEEE Transactions on Circuits and Systems, 1990
A simplified stability analysis of resonator-stabilized oscillators is carried out by using the describing function approach. On this basis a criterion for the evaluation and optimization of the frequency stabilization introduction in an oscillator by a resonating element with a large quality factor is proposed. In particular, a frequency-stabilization
Filicori F., Vannini G.
openaire   +2 more sources

Sufficient Conditions for Robust Frequency Stability of AC Power Systems

open access: yesIEEE Transactions on Power Systems, 2021
This paper analyses the frequency stability of ac grids in the presence of non-dispatchable generation and stochastic loads. Its main goal is to evaluate conditions in which the system is robust to large, persistent active power disturbances without ...
E. Alves   +3 more
semanticscholar   +1 more source

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