Results 41 to 50 of about 2,208,266 (201)
EnergiesAC/DC parallel transmission is a critical approach for large-scale centralized transmission. Existing assessments of power transfer capability in AC/DC corridors rarely incorporate comprehensive security and stability constraints, potentially leading to ...
Zhengnan Gao +7 more
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Robust Scale-Free Synthesis for Frequency Control in Power Systems
, 2019 The AC frequency in electrical power systems is conventionally regulated by synchronous machines. The gradual replacement of these machines by asynchronous renewable-based generation, which provides little or no frequency control, increases system ...
Mallada, Enrique, Pates, Richard
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Two-Way Optical Frequency Comparisons Over 100km Telecommunication Network Fibers [PDF]
, 2014 By using two-way frequency transfer, we demonstrate ultra-high resolution comparison of optical frequencies over a telecommunication fiber link of 100 km operating simultaneously digital data transfer.
Amy-Klein, Anne +5 more
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Island Partitioning of Smart Distribution Systems in Emergencies Considering Voltage and Frequency Stability [PDF]
مجله مدل سازی در مهندسیIsland partitioning is an attractive solution to restore service in a smart distribution system that becomes islanded unintentionally. Immediately after the disconnection of the main grid due to a fault, the island subsystem experiences intense voltage ...
Zahra Hosseini Najafabadi +1 more
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Applied Sciences, 2020 In this paper, a polarization-insensitive metasurface, harvesting electromagnetic (EM) energy with high efficiency and frequency stability over a wide range of incidence angles, is proposed.
Fan Yu +4 more
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Development of optical fiber frequency and time distribution systems [PDF]
, 1982 The development of ultra stable optical fiber distribution systems for the dissemination of frequency and timing references is reported. The ultimate design goals for these systems are a frequency stability of 10 to the -17 power for tau or = 100 sec ...
Lutes, G.
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Laser frequency stabilization to a single ion
, 2005 A fundamental limit to the stability of a single-ion optical frequency standard is set by quantum noise in the measurement of the internal state of the ion.
Bergquist J C +13 more
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Brownian motion-induced amplitude noise in vapor-cell frequency standards
New Journal of Physics, 2020 We demonstrate that the Brownian motion of alkali metal atoms in buffer gas gives rise to a significant source of frequency instability in vapor cell clocks.
S Micalizio +3 more
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Frequency stability review [PDF]
Certain aspects of the description and measurement of oscillator stability are treated. Topics covered are time and frequency deviations, Allan variance, the zero-crossing counter measurement technique, frequency drift removal, and the three-cornered ...
Greenhall, C. A.
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