Results 31 to 40 of about 9,973,806 (349)

Low-Frequency Stability Analysis of Inverter-Based Islanded Multiple-Bus AC Microgrids Based on Terminal Characteristics

IEEE Transactions on Smart Grid, 2020
For system planning of three-phase inverter-based islanded ac microgrids, the low frequency instability issue caused by interactions of inverter droop controllers is a major concern.
Wenchao Cao, Yiwei Ma, F. Wang, L. Tolbert, Yaosuo Xue   +4 more
semanticscholar   +1 more source

A Comparative Analysis of Prominent Virtual Synchronous Generator Strategies Under Different Network Conditions

IEEE Open Access Journal of Power and Energy
The virtual synchronous generator (VSG) is the most widely used grid-forming inverter (GFMI) control technique. The VSG can provide enhanced ancillary services and improved dynamic response compared to conventional synchronous generators and grid ...
Chalitha Liyanage, Inam Nutkani, Lasantha Meegahapola   +2 more
doaj   +1 more source

An overview of the optically detected magnetic-state-selected cesium beam clock

Frontiers in Physics, 2022
Among all kinds of compact cesium beam clocks, the optically detected magnetic-state-selected cesium beam clock (OMCC) combines the advantages of the magnetic state selecting scheme and fluorescence detecting method.
Sifei Chen, Chang Liu, Lifeng Fan, Chen Liu, Yuanhao Li, Shaohang Xu, Chaojie Li, Yanhui Wang   +7 more
doaj   +1 more source

Stability and Frequency Regulation of Inverters with Capacitive Inertia [PDF]

, 2017
In this paper, we address the problem of stability and frequency regulation of a recently proposed inverter. In this type of inverter, the DC-side capacitor emulates the inertia of a synchronous generator.
De Persis, Claudio, Monshizadeh, Nima, Monshizadeh, Pooya, Stegink, Tjerk, van der Schaft, Arjan   +4 more
core   +3 more sources

Realization of Robust Frequency Stability in Low-Inertia Islanded Microgrids With Optimized Virtual Inertia Control

IEEE Access
The increase in renewable energy resources penetration into microgrids weakens the inertia of microgrids and negatively affects their frequency stability.
Walid M. Hamanah, M. Shafiullah, L. Alhems, Md. Shafiul Alam, M. Abido   +4 more
semanticscholar   +1 more source

Practical Framework for Frequency Stability Studies in Power Systems With Renewable Energy Sources

IEEE Access, 2020
The transition from power systems dominated by synchronous machines to systems based on converter-based generation technologies (CGTs), is weakening currently robust power systems by reducing system inertia with the replacement of synchronous generators ...
D. Ortiz-Villalba, C. Rahmann, R. Alvarez, C. Cañizares, Christoph Strunck   +4 more
semanticscholar   +1 more source

An Online Estimation Method for the Equivalent Inertia Time Constant of Power Equipment Based on Node Power Flow Equations

Energies
As renewable energy integration scales up, power systems increasingly depend on sources interfaced through power electronic converters, which lack rotating mass and substantially diminish system inertia.
Zhenghui Zhao, Xianan Wang, Jinhui Sun, Yubo Sun, Qian Zhang, Yang Wang   +5 more
doaj   +1 more source

Fast frequency response for effective frequency control in power systems with low inertia

The Journal of Engineering, 2019
The increasing penetration of renewable generation has led to the decrease of power systems’ overall inertia, which introduces significant challenges to frequency stability.
Qiteng Hong, Marcel Nedd, Seán Norris, Ibrahim Abdulhadi, Mazaher Karimi, Vladimir Terzija, Benjamin Marshall, Keith Bell, Campbell Booth   +8 more
doaj   +1 more source

Mechanism Analysis of the Effect of the Equivalent Proportional Coefficient of Inertia Control for a Doubly Fed Wind Generator on Frequency Stability in Extreme Environments

Sustainability
With the large-scale access of a doubly fed wind generator (DFWG) with inertia adjustment capability to the polar microgrid, the frequency stability characteristics of the polar microgrid become more complicated.
Haopeng Zhang, Xiangyu Zhai, Jiahui Zhang, Xiang Bai, Zening Li   +4 more
semanticscholar   +1 more source

Unit commitment of power systems considering system inertia constraints and uncertainties

IET Renewable Power Generation
Large‐scale integration of renewable energy into the power grid results in a lack of system inertia, posing challenges to the optimal operation and scheduling of systems considering frequency stability.
Yuxin Weng, Guangchao Geng, Quanyuan Jiang   +2 more
doaj   +1 more source