Results 31 to 40 of about 3,505,439 (294)

Research on primary frequency control optimization technology based on overload valve

Zhejiang dianli, 2022
In view of the insufficient primary frequency control of a 1050 MW ultra-supercritical unit equipped with No.0 high-pressure heater and overload valve under some working conditions， the primary frequency control function of the unit is analyzed and ...
JIN Hongwei, SONG Jiahui, ZHANG Xinsheng, XIE Haomin, DING Ning   +4 more
doaj   +1 more source

Primary frequency control of DFIG‐WTs using bang‐bang phase angle controller [PDF]

IET Generation, Transmission & Distribution, 2018
A bang‐bang phase angle controller (BPAC) was proposed in this study for the primary frequency control of doubly‐fed induction generator‐based wind turbines (DFIG‐WTs). Dynamics of the internal voltage of a synchronous generator (SG) and that of a DFIG‐WT were investigated in frequency deviation events.
Liu, Yang, Jiang, Lin, Smith, Jeremy S, Wu, QH   +3 more
openaire   +1 more source

Profit Maximizing Planning and Control of Battery Energy Storage Systems for Primary Frequency Control [PDF]

, 2018
We consider a two-level profit-maximizing strategy, including planning and control, for battery energy storage system (BESS) owners that participate in the primary frequency control (PFC) market.
Low, Steven H., Tang, Wanrong, Zhang, Ying Jun, Zhao, Changhong   +3 more
core   +4 more sources

Primary frequency response based rescheduling for enhancing microgrid resilience

Journal of Modern Power Systems and Clean Energy, 2019
The existing microgrid operation schemes do not consider the dynamic performance of frequency in the islanded operation of microgrids. When an islanded microgrid encounters a disturbance, the sudden power mismatch could impose security risks or even a ...
Liang Che, Xinwei Shen, Mohammad Shahidehpour   +2 more
doaj   +1 more source

Combined Primary Frequency and Virtual Inertia Response Control Scheme of a Variable-Speed Dish-Stirling System

IEEE Access, 2020
The potential of variable-speed dish-Stirling (VSDS) solar-thermal generating plant in providing grid frequency support is investigated. In the proposed VSDS frequency support control scheme, the reference speed of the Stirling engine is regulated to ...
Yang Li, San Shing Choi, D. Mahinda Vilathgamuwa, Binyu Xiong, Jinrui Tang   +4 more
doaj   +1 more source

Enhancing Optical Up-Conversion Through Electrodynamic Coupling with Ancillary Chromophores [PDF]

, 2014
In lanthanide-based optical materials, control over the relevant operating characteristics–for example transmission wavelength, phase and quantum efficiency–is generally achieved through the modification of parameters such as dopant/host combination ...
Andrews D. L., Andrews D. L., Andrews D. L., Andrews D. L., Boivin D., Cao B. S., Chatterjee D. K., Chen G., Chen J., Cheng Y. Y., Craig D. P., Daniels G. J., David L. Andrews, Desirena H., Diaz-Torres L. A., Dong H., Dávila Romero L. C., Ford J. S., Fujii M., Grynberg G., Guo H., Haase M., Herter B., Huang X., Jamie M. Leeder, Jenkins R. D., Jiang T., Kim J. W., Krämer K. W., Li C., Li C., Lin M., Lock M. P. E., Lupei A., Luu Q., Mai H.-X., Salam A., Salam A., Salam A., Scholes G. D., Sun Q.-C., Sun Y., Suyver J. F., Wagnière G., Wang F., Wang F., Wang H., Wang J., Xu Y., Zhang C., Zhang W.   +50 more
core   +1 more source

Inertia Dependent Droop Based Frequency Containment Process

Energies, 2019
Presently, there is a large need for a better understanding and extensive quantification of grid stability for different grid conditions and controller settings. This article therefore proposes and develops a novel mathematical model to study and perform
Kaushik Das, Müfit Altin, Anca D. Hansen, Poul E. Sørensen   +3 more
doaj   +1 more source

Granulocytic myeloid-derived suppressor cells increased in early phases of primary HIV infection depending on TRAIL plasma level [PDF]

, 2017
Background It has been demonstrated that Myeloid Derived Suppressor Cells (MDSC) are expanded in HIV-1 infected individuals and correlated with disease progression.
Abbate, Isabella, Agrati, Chiara, Ammassari, Adriana, Antinori, Andrea, BILOTTA, MARIA TERESA, Bordoni, Veronica, CAPOBIANCHI, Maria Rosaria, Casetti, Rita, Cimini, Eleonora, Martini, Federico, Pinnetti, Carmela, Sacchi, Alessandra, Tumino, Nicola, Turchi, Federica   +13 more
core   +1 more source

Assessment of primary frequency control through battery energy storage systems [PDF]

International Journal of Electrical Power & Energy Systems, 2020
Abstract This article focuses on the impact of the primary frequency control that can be provided by Battery Energy Storage Systems (BESSs) on the transient response of electric grids. A procedure based on the Fourier transform is used for synthesizing a realistic frequency signal based on the variations of load consumption and generation. The impact
F. Arrigo, E. Bompard, M. Merlo, F. Milano   +3 more
openaire   +2 more sources

An Improved Frequency Dead Zone with Feed-Forward Control for Hydropower Units: Performance Evaluation of Primary Frequency Control

Energies, 2019
Due to the integration of more intermittent renewable energy into the power grid, the demand for frequency control in power systems has been on the rise, and primary frequency control of hydropower units plays an increasingly important role.
Hao An, Jiandong Yang, Weijia Yang, Yuanchu Cheng, Yumin Peng   +4 more
doaj   +1 more source