Results 31 to 40 of about 20,988 (236)

Removing an Embolized Peripheral Intravenous Catheter from the Left Caudal Lung Lobe of a Dog via Intercostal Thoracotomy

Veterinary Sciences
An 8-month-old Standard Poodle was referred to a surgical specialist for suspected peripheral intravenous catheter (PIVC) embolism originating from the right cephalic vein. Upon removing the 20-gauge PIVC, the tip appeared to be 2 cm shorter. Radiographs
Samantha Masca, Margaret Goodale, Anke Langenbach   +2 more
doaj   +1 more source

Mechanism analysis and mitigation strategies for oscillatory instability of synchronous generators affected by voltage source converters

IET Generation, Transmission & Distribution, 2022
The electric power systems are experiencing a transformation to be characterized by power electronic devices, for example, voltage source converters (VSCs).
Yicheng Xue, Guoteng Wang, Zheren Zhang, Zheng Xu   +3 more
doaj   +1 more source

Transient Instability Mechanism and Control Method of PLL-Based Grid-Connected VSC

Zhongguo dianli, 2022
The transient instability mechanism and control method of grid-following control voltage source converter (VSC) are comprehensively studied to solve the transient instability of PLL (phase locked loop)-based VSC with consideration of the influence of ...
Zheng CHEN, Pengfei HU, Liyu DAI, Chaohui ZHOU, Yanxue YU, Xiaoqing XIU   +5 more
doaj   +1 more source

A VSC-based Model for Power Flow Assessment of Multi-terminal VSC-HVDC Transmission Systems

, 2021
This paper puts forward a new practical voltage source converter (VSC) based AC-DC converter model suitable for conducting power flow assessment of multi-terminal VSC-based high-voltage direct current (VSC-MTDC) systems. The model uses an advanced method
Fuerte-Esquivel, Claudio R., Alcaide-Moreno, Boris A., Acha, Enrique, Martinez-Parrales, Ricardo   +3 more
core   +1 more source

The Effects of Fire Severity on Vegetation Structural Complexity Assessed Using SAR Data Are Modulated by Plant Community Types in Mediterranean Fire-Prone Ecosystems

Fire, 2023
Vegetation structural complexity (VSC) plays an essential role in the functioning and the stability of fire-prone Mediterranean ecosystems. However, we currently lack knowledge about the effects of increasing fire severity on the VSC spatial variability,
Laura Jimeno-Llorente, Elena Marcos, José Manuel Fernández-Guisuraga   +2 more
doaj   +1 more source

The transient instability mechanism and stability‐enhanced LVRT control for VSC riding‐through severe grid voltage sag

IET Renewable Power Generation, 2023
As the grid‐connected interface device of wind and photovoltaic power generation, the voltage source converter (VSC) must pass the low voltage ride‐through (LVRT) test. However, existing literature demonstrates that under weak grid conditions, there is a
Huiqiang Sun, Xinchun Lin, Guangzhou Huang, Jiayan Zhang, Dan Liu, Kezheng Jiang, Yong Kang   +6 more
doaj   +1 more source

Robust control strategy of VSC-HVDC systems based on feedback linearization and disturbance compensation method

Energy Reports, 2023
The Voltage Source Converter based High Voltage Direct Current (VSC-HVDC) technology has become the development direction of new energy grid-connected, DC power transmission and island power supply technology in the future due to its superior ...
Ping Yang, Yinguo Yang, Ziwen Liu, Yi Yang, Yinjie Qin   +4 more
doaj   +1 more source

Analysis of harmonics in subsea power transmission cables used in VSC-HVDC transmission systems operating under steady-state conditions [PDF]

, 2007
Subsea power cables are a critical component of a voltage-source converter-high-voltage direct current (VSC-HVDC) transmission system in any offshore electrical power scheme.
Bucknall, R.W.G., Chien, C.H.
core  

Synthesis of Bulk Superconducting LiNbO2 Crystals Through CaH2 Reduction

Advanced Materials, EarlyView.
CaH2 reduction reconstructively transforms insulating LiNbO3 single crystals into superconducting bulk LiNbO2 with a critical temperature of Tc = 14.4 K. Scanning electron microscopy reveals large‐volume, high‐yield phase conversion. Magnetization measurements demonstrate a robust ∼ 77% Meissner shielding fraction, establishing bulk superconductivity ...
Ryan Paxson, Stephanie J. Hong, Bicky S. Moirangthem, Parham Kabirifar, Saya Takeuchi, Tianyu Li, Chih‐Yu Lee, Haotong Liang, Keenan Avers, Kamal R. Joshi, Amlan Datta, Makariy A. Tanatar, Shanta Saha, Joseph A. Dura, Peter Zavalij, Johnpierre Paglione, Ruslan Prozorov, Alexander J. Grutter, Efrain E. Rodriguez, Ichiro Takeuchi   +19 more
wiley   +1 more source

Research and application of a power-flow-calculation method in multiterminal VSC-HVDC power grid

Global Energy Interconnection, 2019
For demonstrating a multiterminal voltage-source converter (VSC)-based high-voltage DC (HVDC) (VSC- HVDC) project, this study puts forward a technical route for calculating the power flow in a 500-kV VSC-HVDC power grid in comparison with that of an AC ...
Linlin Wu, Xiaowei Fan, Man Xu, Zhendong Li, Xiao Wang, Xiaofei Zhang, Haiwang Jin   +6 more
doaj   +1 more source