Results 31 to 40 of about 86,543 (172)

A review of power system resilience assessment and enhancement approaches by focusing on wind farms and wind turbines

IET Renewable Power Generation, Volume 17, Issue 9, Page 2391-2410, 6 July 2023., 2023
Here, assessment and enhancement approaches of power system resilience by focusing on the role of wind farms and wind turbines are reviewed. To do so, a comprehensive review of the related metrics, assessment methods, and enhancement solutions is presented. The existing works have studied the resilience of power system from the perspectives of planning
Seyyed Alireza Modaberi, Sajjad Tohidi, Saeid Ghassem Zadeh, Tohid Ghanizadeh Bolandi   +3 more
wiley   +1 more source

Research on the arcing horn with active arc extinguishing function for HVDC grounding electrode line

IET Generation, Transmission &Distribution, Volume 17, Issue 11, Page 2634-2643, June 2023., 2023
In this work, an active arc extinguishing method based on variable resistance for arcing horn was proposed. To design the arcing horn within active arc extinguishing function, the grounding electrode line and arcing horn model were established based on a ±800kV UHVDC transmission system. The electrical characteristics of the arcing horn were calculated
Yicen Liu, Chenguang Yang, Yujun Guo, Xueqin Zhang, Xiao Lei, Guoqiang Gao, Guangning Wu   +6 more
wiley   +1 more source

Residual charge effects on partial discharges' response to varying sub‐kHz voltage frequencies

High Voltage, Volume 8, Issue 3, Page 622-629, June 2023., 2023
Abstract Partial discharges (PD) are the ‘cancer’ of electrical insulation. Insulation design and mitigation of PD‐induced degradation should be based on good knowledge of PD phenomena. In that regard, a significant body of knowledge has been built up from concerted research across the world in past decades and on various aspects of PD phenomena under ...
Cuthbert Nyamupangedengu, Tapiwa Venge
wiley   +1 more source

A New Approach to Include Complex Grounding System in Lightning Transient Studies and EMI Evaluations

Energies, 2019
A new approach to lightning transient studies including complex grounding grids is presented in this paper. The grounding system is modeled in Matlab/Simulink based on the transmission line theory.
Vegard Steinsland, Lasse Hugo Sivertsen, Emil Cimpan, Shujun Zhang   +3 more
doaj   +1 more source

Efficient Computation of Sensitivity Coefficients of Node Voltages and Line Currents in Unbalanced Radial Electrical Distribution Networks [PDF]

, 2012
The problem of optimal control of power distribution systems is becoming increasingly compelling due to the progressive penetration of distributed energy resources in this specific layer of the electrical infrastructure. Distribution systems are, indeed,
Boudec, Jean-Yves Le, Christakou, Konstantina, Paolone, Mario, Tomozei, Dan-Cristian   +3 more
core   +2 more sources

A superimposed current based busbar protection scheme using slope degree of grey incidence analysis model

IET Generation, Transmission &Distribution, Volume 17, Issue 1, Page 161-180, January 2023., 2023
Abstract Superimposed current components contain effective information, which can be employed to enhance the dependability and security of busbar protection relays. This study aims to investigate the use of the slope degree of grey incidence analysis model to design a methodology for busbar protection.
M. Joband, S. Homayounifar, M. Sarlak
wiley   +1 more source

Parallel electromagnetic transient simulation of power systems with a high proportion of renewable energy based on latency insertion method

IET Renewable Power Generation, Volume 17, Issue 1, Page 110-123, 6 January 2023., 2023
Abstract With the interconnection of regional grids and the increasing penetration of renewable energy, the order of the power system model is getting higher and higher, which brings great challenges to the accuracy and real‐time performance of electromagnetic transient (EMT) simulation.
Qiguo Wang, Jin Xu, Keyou Wang, Pan Wu, Weiran Chen, Zirun Li   +5 more
wiley   +1 more source

Full Bridge MMC Converter Optimal Design to HVDC Operational Requirements [PDF]

, 2015
This project is funded by RTE, Paris, FrancePeer ...
Jovcic, Dragan, Lin, Weixing, Nguefeu, Samuel, Saad, Hani   +3 more
core   +1 more source

Modeling of conductors catenary in power lines: effects on the surge propagation due to direct and indirect lightning [PDF]

, 2023
In this article, the effects of the variable height in overhead power lines are investigated with reference to the surges produced by direct and indirect lightning events.
Andreotti A., Araneo R., Celozzi S., Ravichandran N., Stracqualursi E.   +4 more
core   +1 more source

Torque Limit-Based Inertial Control of a DFIG for Rapid Frequency Stabilization

Frontiers in Energy Research, 2021
With the increasing penetration of renewable energy generation, the frequency stability of a power grid can be significantly threatened. A doubly-fed induction generator (DFIG) participates in the frequency support of a power grid by releasing kinetic ...
Yien Xu, Hongmei Wang
doaj   +1 more source