Results 71 to 80 of about 2,208,266 (201)

Preliminary Exploration of 2025 Iberian Peninsula Widespread Power Outage and Its Implications for Power Equipment Suppliers

Kongzhi Yu Xinxi Jishu
On April 28, 2025, a large-scale power outage occurred across the Iberian Peninsula and parts of southern France, seriously affecting local social production and people's normal lives.
ZHANG Wuqi, ZHANG Zhixue, HU Liang, LI Hongbo, XU Huating   +4 more
doaj  

Joint Time and Frequency Dissemination Network Over Delay-Stabilized Fiber Optic Links

IEEE Photonics Journal, 2015
A precise fiber-based time and frequency dissemination scheme for multiple users with a tree-like branching topology is proposed. Through this scheme, ultrastable signals can be easily accessed online without affecting other sites.
Wei Chen, Qin Liu, Nan Cheng, Dan Xu, Fei Yang, Youzhen Gui, Haiwen Cai   +6 more
doaj   +1 more source

Frequency stability of maser oscillators operated with cavity Q [PDF]

, 1982
The short term frequency stability of masers equipped with an external feedback loop to increase the cavity quality factor was studied. The frequency stability of a hydrogen and a rubidium maser were measured and compared with theoretical evaluation.
Audoin, C., Lesage, P., Petit, P., Tetu, M., Tremblay, P.   +4 more
core   +1 more source

Effect of laser frequency noise on fiber-optic frequency reference distribution [PDF]

The effect of the linewidth of a single longitude-mode laser on the frequency stability of a frequency reference transmitted over a single-mode optical fiber is analyzed. The interaction of the random laser frequency deviations with the dispersion of the
Logan, R. T., Jr., Lutes, G. F., Maleki, L.   +2 more
core   +1 more source

Temperature-stable Gunn-diode oscillator [PDF]

, 1975
Oscillator consisting of Gunn diode embedded in coaxial circuit has excellent temperature stability and low fabrication costs as compared with automatic-frequency-control crystal ...
Dengenford, J. E., Dickens, L. E., Maki, D. W., Newman, B. A.   +3 more
core   +1 more source

Realization of a pulsed optically pumped Rb clock with a frequency stability below [Formula: see text]. [PDF]

Sci Rep, 2023
Gozzelino M, Micalizio S, Calosso CE, Belfi J, Sapia A, Gioia M, Levi F.   +6 more
europepmc   +1 more source

DSS-13 beam waveguide antenna frequency stability [PDF]

Measurements made on the frequency stability of the DSS-13 34-m diameter Beam Waveguide (BWG) antenna showed that at 46.5 and 37 deg elevation angles, the BWG antenna stability at 12.2 GHz was between 1.3 and 2.2 x 10(exp -15) for tau = 1024 sec and good
Franco, M. M., Otoshi, T. Y.
core   +1 more source

Gradient descent based dynamic optimization for VSG dominated microgrid

The Journal of Engineering
As the integration of distributed generation units into the power grid continues to grow, the system becomes increasingly vulnerable to power fluctuations and potential failures, which significantly challenge grid stability.
Yan Li, Decheng Wang, Qun Zhang, Jian Du, Qinshan Wang, Qiong Wang   +5 more
doaj   +1 more source

Characterizing Periodic Variations of Atomic Frequency Standards via Their Frequency Stability Estimates. [PDF]

Sensors (Basel), 2023
Cheng W, Nie G, Zhu J.
europepmc   +1 more source

Low‐head pumped hydro storage: An evaluation of energy balancing and frequency support

IET Renewable Power Generation
Large‐scale energy storage solutions are crucial to ensure grid stability and reliability in the ongoing energy transition towards a low‐carbon, renewable energy based electricity supply.
Justus Peter Hoffstaedt, Daan Truijen, Antonio Jarquin Laguna, Jeroen De Kooning, Kurt Stockman, Jonathan Fahlbeck, Hakan Nilsson   +6 more
doaj   +1 more source