Results 11 to 20 of about 68,357 (185)

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

open access: yesIngeniería, 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   +2 more sources

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

open access: yes2006 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   +2 more sources

Impact Theoretical Analysis of Resistive FCL on the Rate of Rise of Recovery Voltage Across Circuit Breaker

open access: yesIET Science, Measurement & Technology
The utilization of fault current limiters (FCLs) results in a decrease in short‐circuit levels. However, as FCLs are integrated within the fault loop circuit, they may exert a significant influence on the transient recovery voltage and rate of rise of ...
Mohammad Reza Barzegar‐Bafrooei   +1 more
doaj   +2 more sources

Power Dispatching Method for a De‐Loading Operated Wind Farm Participating in Power System Frequency Regulation Considering Wake Effect

open access: yesIET Renewable Power Generation
Under the guidance of the ‘dual carbon’ goals, the installed capacity of wind power continues to grow, increasing wind power penetration levels (WPPLs) and posing challenges to system frequency stability.
Taiying Zheng, Zhaoji Liu
doaj   +2 more sources

A new method for surge arrester placement in high‐voltage substations considering environmental effects

open access: yesIET Science, Measurement & Technology
Conventional approaches for determining the optimal locations of surge arresters (SAs) can result in an unnecessary increase in the number of these devices in high‐voltage substations.
Faridoddin Safaei, Mohsen Niasati
doaj   +2 more sources

High‐Impedance Fault Detection in Distribution Networks Based on Support Vector Machine and Wavelet Transform Approach (Case Study: Markazi Province of Iran)

open access: yesEnergy Science & Engineering
High impedance faults (HIFs) can lead to crucial damage to the utility grid, such as the risk of fire in material assets, electricity supply interruptions, and long service restoration times.
Mohammad Sadegh Attar   +1 more
doaj   +2 more sources

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

open access: yesZbornik 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   +2 more
doaj   +1 more source

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

open access: yesMajlesi 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   +2 more
doaj   +1 more source

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

open access: yesIET 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   +2 more
doaj   +1 more source

Modelling of Secondary Arc Using EMTP-RV [PDF]

open access: yesThe 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   +3 more
openaire   +1 more source

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