Results 61 to 70 of about 68,357 (185)
The Journal of Engineering, Volume 2024, Issue 4, April 2024.A lumped‐element circuit model of district heating (DH) pipe considering heat loss, transfer delay and enthalpy transfer is proposed. The proposed model has a high level of accuracy and is computationally more efficient than the existing distributed‐element circuit model of pipe. The lumped‐element circuit representing the DH pipe has only two nodes by
Mingyu Jiang +5 more
wiley +1 more source
A Curve Fitting–Based Directional Protection of Transmission Lines Using Genetic Programing
Journal of Sensors, Volume 2024, Issue 1, 2024.In modern power systems, there is a growing need for protection techniques that are fast, precise, and stable to enhance the reliability and stability of power networks. This paper introduces an advanced technique for fault direction estimation that addresses key limitations in existing methods.
Sabah Daniar +3 more
wiley +1 more source
A New Active Method for Islanding Detection Based on Traveling Wave Theory
Iranian Journal of Electrical and Electronic Engineering, 2018 In this paper, a new active method based on traveling wave theory for islanding detection is presented. A standard power grid that combines a distributed generation source and local loads is used to test the proposed method.
S. Dolatabadi, S. Tohidi, S. Ghasemzadeh
doaj
MachinesElectric vehicles (EVs) rely on robust inverter-to-motor connections to ensure high-efficiency operation under the challenging conditions imposed by wide-bandgap (WBG) semiconductors.
Easir Arafat, Mona Ghassemi
doaj +1 more source
High impedance fault modelling and application of detection techniques with EMTP‐RV
The Journal of Engineering, 2018 The aim of this study is to develop a software‐oriented framework that will help simulate and study high impedance faults (HIFs) in power distribution systems, as well as design adequate HIF detection techniques. After a thorough literature review, three well‐established HIF models have been developed in EMTP‐RV, as part of this work. Systematic (black
Vassilis C. Nikolaidis +2 more
openaire +1 more source
International Transactions on Electrical Energy Systems, Volume 2024, Issue 1, 2024.Electric power systems constantly encounter disturbances and faults, necessitating fast and precise identification and rectification of these issues. This is crucial for ensuring the stability and reliability of the system. This paper introduces a protection scheme for accelerating the second zone operation of the distance relay during internal faults.
Sabah Daniar +3 more
wiley +1 more source
A Lissajous Curve–Based Method for Busbar Protection
International Transactions on Electrical Energy Systems, Volume 2024, Issue 1, 2024.In this paper, a novel time‐domain method based on the orientation analysis of the superimposed current component Lissajous curves is presented for busbar protection. The conducted study has showed that the orientations of the superimposed current component Lissajous curves are different under internal and external fault conditions. These curves during
M. Sarlak, Akshay Kumar Saha
wiley +1 more source
Parameter analysis of frequency dependent metal oxide surge arrester model in EMTP–RV program
, 2021 Zadatak ovog diplomskog rada bio je proučavanje frekvencijski ovisnog modela metaloksidnog odvodnika prenapona razvijenog od strane IEEE radne skupine 3.4.11. te njegova implementacija unutar EMTP – RV programskog paketa.
Penić, Frano
core
Energies, 2019 In this paper, two algorithms for single-ended fault location are presented with reference to the unearthed sub-transmission Italian grid (with a voltage level of 60 kV).
Roberto Benato +2 more
doaj +1 more source
Load-flow computation using EMTP-RV program package
, 2022 Unutar elektroenergetskog sustava nalazi se mnoštvo grana i čvorova, vodovi i transformatori definiraju grane sustava, a sabirnice su čvorovi. Potrošnja snage u sustavu tokom cijelog dana se mijenja, te iz toga razloga radne točke generatora se mijenjaju
Kasalo, Ante
core +1 more source