Results 21 to 30 of about 380 (134)

Fault current and fault voltage analysis of power transmission systems with high penetration of inverter-based wind generators

open access: yesActa Scientiarum: Technology, 2022
This paper highlights the evolution of wind power sources in the modern energy scenario, emphasizing the impacts of inverter-based generators, namely Full-Converter and DFIG (Doubly-Fed Induction Generator), on fault currents and fault voltages in ...
Moisés Junior Batista Borges Davi   +2 more
doaj   +1 more source

Studies on an Electromagnetic Transient Model of Offshore Wind Turbines and Lightning Transient Overvoltage Considering Lightning Channel Wave Impedance

open access: yesEnergies, 2017
In recent years, with the rapid development of offshore wind turbines (WTs), the problem of lightning strikes has become more and more prominent. In order to reduce the failure rate caused by the transient overvoltage of lightning struck offshore WTs ...
Li Zhang   +4 more
doaj   +1 more source

Development of a Leader-End Reclosing Algorithm Considering Turbine-Generator Shaft Torque

open access: yesEnergies, 2017
High-speed auto-reclosing is used in power system protection schemes to ensure the stability and reliability of the transmission system; leader-follower auto-reclosing is one scheme type that is widely used.
Gyu-Jung Cho   +6 more
doaj   +1 more source

Analisis Karakteristik Arrester Pada Jaringan Transmisi 150kV Akibat Sambaran Petir Berbasis Perangkat Lunak EMTP

open access: yesPatria Artha Technological Journal, 2020
Pemodelan karakteristik arrester pada jaringan transmisi 150kv akibat sambaran petir merupakan salah satu cara yang praktis untuk membentuk jalan yang mudah dilalui oleh arus petir, sehingga tidak timbul tegangan lebih pada peralatan.
Mochammad Apriyadi
doaj   +1 more source

Experimental and Analytical Studies on Lightning Surge Response of the Quadruple-Circuit Transmission Line

open access: yesIEEE Access, 2023
The compact design of a 500 kV quadruple-circuit transmission line can effectively reduce the line corridor area, but the height of the tower also increases, increasing the probability of suffering a lightning strike.
Qianxin Zhu   +11 more
doaj   +1 more source

Smart Grid Resilience for Grid-Connected PV and Protection Systems under Cyber Threats

open access: yesSmart Cities, 2023
In recent years, the integration of Distributed Energy Resources (DERs) and communication networks has presented significant challenges to power system control and protection, primarily as a result of the emergence of smart grids and cyber threats.
Feras Alasali   +6 more
doaj   +1 more source

Systematization of the Simulation Process of Transformer Inrush Current Using EMTP

open access: yesApplied Sciences, 2019
An inrush current is generated when a transformer is energized. This current has a large magnitude and rich harmonics, thereby causing mal-operation of the protection relay.
Hun-Chul Seo, Gi-Hyeon Gwon
doaj   +1 more source

Influence of Lightning Current Model on Simulations of Overvoltages in High Voltage Overhead Transmission Systems

open access: yesEnergies, 2020
The analysis of lightning overvoltages generated in electrical power systems has a great meaning for the designers and exploitation engineers because it creates bases for the optimization of construction overhead transmission lines and high voltage ...
Jakub Furgał
doaj   +1 more source

Evaluation of the Transient Overvoltages of HVDC Transmission Lines Caused by Lightning Strikes

open access: yesEnergies, 2022
High-voltage direct-current (HVDC) transmission systems are considered an outstanding solution due to high electrical losses emerging from long-distance transmission. However, HVDC transmission lines (TLs) are vulnerable to lightning strikes.
Amr S. Zalhaf   +5 more
doaj   +1 more source

Research on Electromagnetic Transient Processes of Long Marshalling High-Speed Train Passing Articulated Split-Phase Region

open access: yesIEEE Access, 2019
When a long marshaling high-speed train (HST) with two raised pantographs passes an articulated split-phase region, there will be eight electromagnetic transient processes along with pantograph arcing.
Ke Huang, Zhigang Liu, Xin Li
doaj   +1 more source

Home - About - Disclaimer - Privacy