Results 21 to 30 of about 669,503 (300)

Calculation of fault current in MMC-HVDC based on numerical inverse Laplace transform

电力工程技术, 2022
The fault transient analysis of the modular multilevel converter based high voltage direct-current (MMC-HVDC) system is an important basis for the refined design of protection strategies and the selection of equipment parameters.
WU Tonghua, DAI Wei, LI Xindong, HOU Xiaofan, OUYANG Ziqiang, YAN Zheng   +5 more
doaj   +1 more source

Automated post-fault diagnosis of power system disturbances [PDF]

, 2006
In order to automate the analysis of SCADA and digital fault recorder (DFR) data for a transmission network operator in the UK, the authors have developed an industrial strength multi-agent system entitled protection engineering diagnostic agents (PEDA).
Davidson, E.M., McArthur, S.D.J.
core   +1 more source

Modeling of environmental aspects related to reverse osmosis desalination supply chain [PDF]

, 2020
open access journalBackground: This study aimed to model optimization of strategic environmental management decisions in the operation of reverse osmosis desalination, emphasizing the costs required for the environmental protection during the production ...
Alipour, Vali, Amoozad Mahdiraji, Hannan, Binaee, Shahab, Mehrgan, Mohammad Reza, Razavi Haji Agha, Seyyed Hossein   +4 more
core   +2 more sources

Adaptive real-time protection scheme for distribution networks with high penetration levels of renewable energy resources

Ain Shams Engineering Journal, 2023
The increasing demands of electrical power have imposed a necessity to integrate renewable energy power sources (REPS) into electrical power networks. The presence of REPS within electrical distribution networks mandated an update in the settings of the ...
Fady Wadie, Ebthal Abdulgawad, A. Mousa Abd-Allah   +2 more
doaj   +1 more source

Application of Transmission Line Tower Foundation Protection in Power Engineering

Highlights in Science, Engineering and Technology, 2023
The area of mountains, hills and plateaus in China accounts for about 69% of the total land area of the country. It is inevitable that the UHV and HV transmission lines under construction will be built in areas with complex geomorphic characteristics.
Zhen Bao, Xia Ji
openaire   +1 more source

Protection challenges in future converter dominated power systems : demonstration through simulation and hardware tests [PDF]

, 2015
A model of a converter source capable of providing a controllable fault response is introduced to analyse the performance of protection in future power system scenarios. Using a reduced power system model of the National Grid transmission system in Great
Booth, Campbell, Dysko, Adam, Li, Ruiqi, Roscoe, Andrew, Urdal, Helge, Zhu, Jiebei   +5 more
core   +1 more source

DFT-based design and magnetic properties optimization of the α-Fe/Nd2Fe14B dual-phase composite interface [PDF]

AIP Advances
Dual-phase composite magnetic materials can provide a stable bias magnetic field and reduce the losses associated with the excitation current of magnetic controlled reactors. However, the interfacial coupling mechanism of these materials remains unclear.
Jiaxin Yuan, Daixue Zhang, Fuyao Yang, Yang Liu, Cong Wang, Tao Ma, Xinping Guo, Xiaobing Ma, Yijie Zhao, Jiangbo Chen   +9 more
doaj   +1 more source

A Novel Magnetic Integration High-Efficiency Converter with Low Ripple and High Dynamic Response for the Hybrid Power Supply Systems of All-Electric Aircraft

Aerospace
With the continuous improvement of battery energy density and converter power density, as well as the miniaturization and lightweighting of related airborne electrical equipment, all-electric aircraft with hybrid power supply systems provide more trade ...
Li Chen, Haifeng Gao, Fengjie Shen, Yiyi Zhang, Liangjie Qiu, Lei Wang   +5 more
doaj   +1 more source

MMC‐HVDC AC side line protection based on positive sequence fault component current ratio

IET Generation, Transmission & Distribution, 2023
The high‐voltage direct current (HVDC) transmission based on modular multilevel converter shows the weak feed characteristic of limited fault current amplitude when connected to the traditional AC power grid, which leads to the risk of sensitivity ...
Hanqing Huang, Zengping Wang
doaj   +1 more source

A Policy Switching Approach to Consolidating Load Shedding and Islanding Protection Schemes

, 2014
In recent years there have been many improvements in the reliability of critical infrastructure systems. Despite these improvements, the power systems industry has seen relatively small advances in this regard. For instance, power quality deficiencies, a
Cotilla-Sanchez, Eduardo, Fern, Alan, Meier, Rich   +2 more
core   +1 more source