Results 41 to 50 of about 29,133 (164)

Time-varying harmonic impedance estimation based on locally-geographically weighted regression

电力工程技术
In existing estimation methods for utility harmonic impedance, it is commonly assumed that the harmonic impedance remains invariant, which often diverges from actual conditions.
XU Fangwei, XIE Pei′ang, WANG Chuan, LIU Kai, GUO Kai, FAN Lijuan   +5 more
doaj   +1 more source

Utility harmonic impedance estimation based on time series clustering and improved Pettitt method

International Journal of Electrical Power & Energy Systems
Utility harmonic impedance estimation is critical for power quality assessment and improvement. Noninvasive methods without injecting harmonics are widely adopted to estimate utility harmonic impedance using natural load variations.
Wentao Li, Shunliang Wang, Hao Tu, Hong Miao, Ning Jiao, Tianqi Liu   +5 more
doaj   +1 more source

Real Time Effective Impedance Estimation for Power System State Estimation

2020 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), 2020
This paper introduces two tools-the Effective Impedance State Estimator (EISE), and the Real Time Effective Impedance Estimator (RTEIE). The EISE is novel in that it is an entirely data-driven state estimator, and does not require a network model.
Keith Moffat, Mohini Bariya, Alexandra von Meier   +2 more
openaire   +2 more sources

Experimental study and techno-economic evaluation of an active fault detection kit in the prospect of future zero energy building installations

Automatika
This article presents an active fault detection kit, applicable to low voltage single-phase electrical installations, in the prospect of the Zero Energy Building concept, integrating on-site renewable energy generation and energy storage.
Christos Pechlivanis, Nick Rigogiannis, Andreas Tichalas, Faidra Kotarela, Nick Papanikolaou   +4 more
doaj   +1 more source

Constrained robust estimation of magnetotelluric impedance functions based on a bounded-influence regression M-estimator and the Hilbert transform [PDF]

Nonlinear Processes in Geophysics, 2008
Robust impedance estimation procedures are now in standard use in magnetotelluric (MT) measurements and research. These always yield impedance estimates which are better than the conventional least square (LS) estimation because the 'real' MT ...
D. Sutarno
doaj  

Cerebrovascular impedance estimation with near-infrared and diffuse correlation spectroscopy. [PDF]

Neurophotonics, 2023
Yang J, Ruesch A, Kainerstorfer JM.
europepmc   +1 more source

Prognostic role of pulmonary impedance estimation to predict right ventricular dysfunction in pulmonary hypertension. [PDF]

ESC Heart Fail, 2023
Hungerford SL, Kearney K, Song N, Bart N, Kotlyar E, Lau E, Jabbour A, Hayward CS, Muller DWM, Adji A.   +9 more
europepmc   +1 more source

State of Health Estimation for Lithium-Ion Batteries Based on Alternating Electrical Signals Within a Specific Frequency Range

Batteries
State of Health (SOH) estimation of lithium-ion batteries is a critical and challenging requirement in advanced battery management technologies. As an important parameter, battery impedance contains significant electrochemical information that can ...
Bo Rao, Jinqiao Du, Jie Tian, Weige Zhang, Xinyuan Fan, Tianrun Yu   +5 more
doaj   +1 more source

Non-Injected broadband impedance estimation based on injected impedance measurement

International Journal of Electrical Power & Energy Systems
As power electronic devices become increasingly connected to power grids, power systems face issues, such as stability and harmonic resonance; broadband harmonic impedance is a key piece of information that helps analyze these issues. This study proposes
Ying Wang, Hao Chen, Liu Yang, Peng Zhang, Shunyi Li   +4 more
doaj   +1 more source

Real-Time Impedance Estimation for Power Line Communication

IEEE Access, 2019
The real-time broadband properties of impedance in power line communication (PLC) systems are one of the essential characteristics of future smart grids, which would enable the smart online systems to implement fault detection/forecast or the PLC channel
Dong Liang, Huashan Guo, Tao Zheng
doaj   +1 more source