Results 21 to 30 of about 59,135 (45)

Cause, Classification of Voltage Sag, and Voltage Sag Emulators and Applications: A Comprehensive Overview

open access: yesIEEE Access, 2020
The large-scale application of wind power and photovoltaic power solves the energy crisis and alleviates the environmental problems caused by the use of conventional energy.
Yang Han   +5 more
semanticscholar   +1 more source

Voltage Sag Enhancement of Grid Connected Hybrid PV-Wind Power System Using Battery and SMES Based Dynamic Voltage Restorer

open access: yesIEEE Access, 2020
Renewable energy sources; which are abundant in nature and climate friendly are the only preferable choice of the world to provide green energy. The limitation of most renewable energy sources specifically wind and solar PV is its intermittent nature ...
Emiyamrew Minaye Molla, C. Kuo
semanticscholar   +1 more source

Mechanism of oil-solid interface adhesion in micro-scale flow within shale oil reservoirs

open access: yesYouqi dizhi yu caishoulu
This study focused on the mud shale reservoirs in the second Member of Funing Formation in Qintong Sag, Subei Basin of China, and systematically investigated the oil-solid interface adhesion mechanism of shale oil in micro-scale flow.
LIU Xiaoyu   +5 more
doaj   +1 more source

SRF based versatile control technique for DVR to mitigate voltage sag problem in distribution system

open access: yes, 2020
Dynamic voltage restorer (DVR) is a power electronics based custom power device (CPD) which is used in distribution system to mitigate voltage sag problem, although the performance of DVR depends mainly on its control technique.
Essam A. Al‐Ammar   +4 more
semanticscholar   +1 more source

Natural fracture identification and modeling for shale oil reservoirs in continental basins: a case study from vicinity of well QY4 in Qintong Sag, Subei Basin

open access: yesShiyou shiyan dizhi
China possesses abundant shale oil resources, but exploration and development have progressed slowly due to the strong heterogeneity and complex fracture development in continental shale reservoirs.
Peng CHEN   +7 more
doaj   +1 more source

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