Results 1 to 10 of about 122 (118)

Application of the Heidler function in electromagnetic transients programs [PDF]

Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2021
The paper analyzes the possibility of using the Heidler function in programs for electromagnetic transients. The parameters of the Heidler function are calculated for various standard waveforms, where greater accuracy is shown for certain waves than with
Mrvić Jovan, Jasika Ranko, Simić Ninoslav   +2 more
doaj   +1 more source

Evaluation of 1-phase, 3-phase and Lightning Faults on Wind Farms using EMTP-RV

Majlesi Journal of Electrical Engineering
Since development of wind power plants installation is growing, problems related to network connecting, stability and voltage effects become more important.
Saber Arabi Nowdeh, Mohsen Chitsaz, Saheb Khanabdal   +2 more
doaj   +1 more source

An algorithm for fitting passive equivalent circuits for lumped parameter frequency dependent transmission line models

IET Generation, Transmission & Distribution, 2021
Accurately fitting rational functions to the frequency response of modal impedances is crucial for including frequency dependency in lumped parameter models of transmission lines.
Kiran Kumar Challa, Gurunath Gurrala, Pritam Mukherjee   +2 more
doaj   +1 more source

Modelling of Secondary Arc Using EMTP-RV [PDF]

The Transactions of The Korean Institute of Electrical Engineers, 2012
Most of faults occurred in transmission lines are single-phase to ground faults and transient faults. Single-phase auto reclosing is an appropriate scheme to maintain the system stability and restore the system effectively when those faults are occurred.
Yun-Sik Oh, Sung-Bum Kang, Hun-Chul Seo, Chul-Hwan Kim   +3 more
openaire   +1 more source

Evaluation of Filtered Spark Gap on the Lightning Protection of Distribution Transformers: Experimental and Simulation Study

Energies, 2020
Protection of transformers, as one of the most expensive equipment in the power system, against lightning overvoltage impulses is a vital task. This paper, for the first time so far, investigates the effects of a filtered spark gap on the protection ...
Mahdi Pourakbari-Kasmaei, Farhan Mahmood, Michal Krbal, Ludek Pelikan, Jaroslava Orságová, Petr Toman, Matti Lehtonen   +6 more
doaj   +1 more source

Modeling a Hybrid Diode-Thyristor HVDC Rectifier in EMTP-RV [PDF]

2006 Canadian Conference on Electrical and Computer Engineering, 2006
This paper presents the investigation into the viability of a hybrid diode-thyristor High Voltage Direct Current (HVDC) rectifier. The large-scale usage of HVDC transmission is limited by several factors and one of the most important factors is the high cost of conversion equipment.
N. Monsur, Vijay Kumar Sood, L. Lopes
openaire   +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

MODELO DE TRANSFORMADORES EN SATURACIÓN UTILIZANDO FUNCIONES DE CÁLCULO DE PARÁMETROS EN EMTP-RV

Ingeniería, 2014
La representación del fenómeno de saturación de un transformador es imprescindible en los estudios de transitorios electromagnéticos, principalmente porque debe representar con exactitud la sobrexcitación del transformador durante su energización, además
Leonardo Montealegre Lobo
doaj   +1 more source

THE EFFECTS OF CABLE CHARACTERISTICS ON MAXIMUM OVERVOLTAGE IN COMBINED OVERHEAD/CABLE LINES PROTECTED BY SURGE ARRESTERS

International Islamic University Malaysia Engineering Journal, 2018
 This paper presents the calculation of maximum lightning overvoltage for a transmission system consisting of overhead lines in combination with an underground power cable.
Reza Alizadeh, Mohammad Mirzaie
doaj   +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