Results 21 to 30 of about 179,209 (263)

Field PMU Test and Calibration Method—Part II: Test Signal Identification Methods and Field Test Applications

Journal of Modern Power Systems and Clean Energy, 2023
Synchrophasor measurement units (PMUs) provide synchronized measurement data for wide-area applications. To improve the effectiveness of synchrophasor-based applications, field PMUs must be tested to ensure their performance and data quality.
Sudi Xu, Hao Liu, Tianshu Bi
doaj   +1 more source

Investigation of Quantitative Assessment Techniques for Supply-Regulation Capability in Multi-Scenario New-Type Power Systems

EAI Endorsed Transactions on Energy Web
This paper offers an in-depth investigation into various quantitative assessment methods used to quantify the supply regulation capacity in new types of power systems under different conditions.
Miao Liu, Zesen Wang, Guangming Xin, Qi Li, Shuaihao Kong   +4 more
doaj   +1 more source

Subsynchronous oscillation monitoring and alarm method based on phasor measurements

Global Energy Interconnection, 2020
Owing to the large-scale grid connection of new energy sources, several installed power electronic devices introduce sub-/supersynchronous inter-harmonics into power signals, resulting in the frequent occurrence of subsynchronous oscillations (SSOs). The
Yuan Qi, Jiaxian Li, Hao Liu, Tianshu Bi
doaj   +1 more source

Extreme Operation Mode Extraction Method Based on Convex Hull Algorithm

Zhongguo dianli
In the context of safety and stability calculation in power system planning and operation, the operation mode that is the most unfavorable to safety and stability is generally selected for verification.
Yanping XU, Jie BAI, Haobo SHI, Xiaohui QIN, Yantao ZHANG   +4 more
doaj   +1 more source

Examination on the parameter stability region of the VSC control system in VSC-HVDC transmission systems

The Journal of Engineering, 2019
Nowadays, the voltage source converter (VSC)-based high-voltage direct current (HVDC) transmission technology is widely adopted for the integration of renewable power generations.
Long Xu, Guoyun Su, Wenjuan Du, Chen Chen, Bixing Ren, Haifeng Wang   +5 more
doaj   +1 more source

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source

A pilot protection method for the transmission line of wind farm-flexible DC system based on high-frequency inductance difference coefficients

International Journal of Electrical Power & Energy Systems
Conventional protection schemes for wind farm-flexible flexible direct current (DC) system transmission lines are susceptible to malfunctions in external fault scenarios and exhibit limited immunity to fault resistance in internal fault scenarios. In the
Jing Ma, Zhuoer Gao, Guojie Xu, Jie Li, Kun Qian, Yufeng Zhao   +5 more
doaj   +1 more source

Single‐molecule DNA flow‐stretch assays for high‐throughput DNA–protein interaction studies

FEBS Open Bio, EarlyView.
We describe an optimised single‐molecule DNA flow‐stretch assay that visualises DNA–protein interactions in real time. Linear DNA fragments are tethered to a surface and stretched by buffer flow for fluorescence imaging. Using λ and φX174 DNA, this protocol enhances reproducibility and accessibility, providing a versatile approach for studying diverse ...
Ayush Kumar Ganguli, Mohammad Nour Alsamsam, Ugnė Bagdonaitė, Van Truc Vu, Chun‐Jen Huang, Polina Kuzhir, Mindaugas Zaremba, Aurimas Kopūstas, Marijonas Tutkus   +8 more
wiley   +1 more source

Functional Connectivity Linked to Cognitive Recovery After Minor Stroke

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Patients with minor stroke exhibit slowed processing speed and generalized alterations in functional connectivity involving frontoparietal cortex (FPC). The pattern of connectivity evolves over time. In this study, we examine the relationship of functional connectivity patterns to cognitive performance, to determine ...
Vrishab Commuri, Isabella Dallasta, Ciaran Stone, Sophia Girgenti, Neda Gould, Rafael H. Llinas, Jonathan Z. Simon, Elisabeth Breese Marsh   +7 more
wiley   +1 more source

Performance evaluation of oscillation stability analysis method for direct-drive wind power grid connected system considering control strategy switching

International Journal of Electrical Power & Energy Systems
In view of the difficulty in evaluating the oscillation stability of direct-drive wind farm integrated power system during fault recovery, this paper proposed an oscillation stability analysis method based on dynamic energy.
Jing Ma, Ningsai Su, Yufeng Zhao, Xi Shi, Chenzhao Han, Yaqi Shen   +5 more
doaj   +1 more source