Results 81 to 90 of about 3,143,983 (204)

Response time for primary frequency control of hydroelectric generating unit

International Journal of Electrical Power & Energy Systems, 2016
For evaluating the power quality in primary frequency control for hydroelectric generating units, the power response time is an indicator which is of main concern to the power grid.
Yang, Weijia, Yang, Jiandong, Guo, Wencheng, Norrlund, Per   +3 more
openaire   +3 more sources

A new perspective on frequency control in conventional and future interconnected power systems

International Journal of Electrical Power & Energy Systems
In the interconnected power systems, the frequency change during disturbances may manifest differently in certain areas in the initial moments after the disturbance. Due to wave propagation, generating units located in distant areas contribute to primary
Tomislav Baškarad, Ninoslav Holjevac, Igor Kuzle   +2 more
doaj   +1 more source

The matrix exponential in transient structural analysis [PDF]

The primary usefulness of the presented theory is in the ability to represent the effects of high frequency linear response with accuracy, without requiring very small time steps in the analysis of dynamic response.
Minnetyan, Levon
core   +1 more source

Frequency measurement point selection and regional primary frequency regulation capability assessment in high-penetration renewable energy power systems

Zhejiang dianli
The increasing integration of renewable energy sources replacing conventional synchronous generators in power systems has led to weakened system inertia support and reduced primary frequency regulation capability， with growing spatiotemporal dispersion ...
LI Dongdong, YAO Zhenfei, YAO Yin, XU Bo, YANG Fan, ZHAI Haibao, GAO Wenzhong   +6 more
doaj   +1 more source

Vibration Identification of Folded-MEMS Comb Drive Resonators

Micromachines, 2018
Natural frequency and frequency response are two important indicators for the performances of resonant microelectromechanical systems (MEMS) devices.
Jianxin Han, Lei Li, Gang Jin, Jingjing Feng, Baizhou Li, Haili Jia, Wenkui Ma   +6 more
doaj   +1 more source

Adaptive Filtering Enhances Information Transmission in Visual Cortex

, 2006
Sensory neuroscience seeks to understand how the brain encodes natural environments. However, neural coding has largely been studied using simplified stimuli.
A Kohn, AA Emondi, AB Saul, AL Fairhall, Andrei V. Kurgansky, BC Skottun, C Blakemore, D Chander, D Smyth, DG Albrecht, DJ Field, DJ Field, DL Ringach, DL Ruderman, DW Dong, EP Simoncelli, F Rieke, FE Theunissen, FE Theunissen, G Felsen, Hiroki Sugihara, I Ohzawa, JA Movshon, JD Victor, JJ Atick, Kenneth D. Miller, L Maffei, Michael P. Stryker, MJ Nolt, MJ Wainwright, MN Kvale, MP Sceniak, N Brenner, N Brenner, NC Rust, R Baddeley, R de Boer, R Shapley, RM Shapley, SA Baccus, Sergei P. Rebrik, SG Solomon, SM Smirnakis, SP Brown, SV David, T Hosoya, T Sharpee, Tatyana O. Sharpee, V Dragoi, Y Dan   +49 more
core   +1 more source

Attitude control compensator for flexible spacecraft [PDF]

, 1991
An attitude control loop for a spacecraft uses a proportional-integral-derivative (PID) controller for control about an axis. The spacecraft body has at least a primary mechanical resonance.
Goodzeit, Neil E., Linder, David M.
core   +1 more source

Optimization of Reserve Capacity for New Energy Participating in Primary Frequency Regulation of the Power System

Energies
The frequency regulation problem of the power system under the scenario of a high proportion of new energy access has attracted attention. It has become an important technical means for new energy to reserve a certain amount to participate in system ...
Yichao Jia, Ning Chen, Lei Zhang, Minhui Qian, Bingjie Tang, Yanzhang Liu, Chang Zhou, Peipei Peng   +7 more
doaj   +1 more source

Evaluation of the Autoparametric Pendulum Vibration Absorber for a Duffing System

Shock and Vibration, 2008
In this work we study the frequency and dynamic response of a damped Duffing system attached to a parametrically excited pendulum vibration absorber. The multiple scales method is applied to get the autoparametric resonance conditions and the results are
Benjamın Vazquez-Gonzalez, Gerardo Silva-Navarro   +1 more
doaj   +1 more source

Air gap influence on the vibro-acoustic response of Solar Arrays during launch [PDF]

, 2010
One of the primary elements on the space missions is the electrical power subsystem, for which the critical component is the solar array. The behaviour of these elements during the ascent phase of the launch is critical for avoiding damages on the ...
Chimeno Manguan, Marcos, Fernandez, M.J., García Echebarria, J., López Díez, Jesús, Santiago Prowald, Julián B., Simon, F., Wijker, J.J.   +6 more
core   +1 more source