Results 11 to 20 of about 2,919 (107)

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

Energy 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, Mohammad Reza Miveh   +1 more
doaj   +2 more sources

Externally gapped line arresters placement effect on transmission line lightning performance including the frequency response of the grounding system

IET Generation, Transmission &Distribution, Volume 17, Issue 22, Page 4975-4990, November 2023., 2023
• The externally gapped line arrester (EGLA) performance, which incorporates the frequency grounding system, has been explored as a new approach. • The effect of port length, diameter, and grounding electrode shape on the grounding system impedance has been modelled.
Masume Khodsuz
wiley   +1 more source

A review: Monitoring situational awareness of smart grid cyber‐physical systems and critical asset identification

IET Cyber-Physical Systems: Theory &Applications, Volume 8, Issue 3, Page 160-185, September 2023., 2023
This study presents the necessary background to attain the appropriate approach for monitoring critical assets in cyber‐physical systems' situational awareness. Additionally, the paper presents a broad survey supported by an in‐depth review of previous works in three important aspects.
Yazeed Alrowaili, Neetesh Saxena, Anurag Srivastava, Mauro Conti, Pete Burnap   +4 more
wiley   +1 more source

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 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

Shifted frequency‐based electromagnetic transient simulation for AC power systems in symmetrical component domain

IET Renewable Power Generation, Volume 17, Issue 1, Page 83-94, 6 January 2023., 2023
Abstract Power systems are becoming more and more complicated. Traditional simulation tools such as transient stability programs and electromagnetic transients (EMT) programs are unable to meet the accuracy or efficiency requirements. This paper proposes a shifted frequency‐based EMT (SFEMT) simulation in the symmetrical component‐domain (abbreviated ...
Shilin Gao, Yankan Song, Ying Chen, Zhitong Yu, Zhendong Tan   +4 more
wiley   +1 more source

Análisis de las funciones de protección de sobrecorriente, distancia y diferencial en el software emtp-rv: análisis de la función de protección de sobrecorriente en el sotware emtp-rv. [PDF]

, 2022
El presente trabajo presenta la coordinación de relés de sobrecorriente en un sistema de prueba seleccionado, empleando el software EMTP-RV. En primera instancia se realiza una revisión bibliográfica del funcionamiento y calibración de la protección ...
Flores Ausay, Michelle Alexandra
core  

Modeling of a three-phase two-winding transformer in EMTP-RV software

, 2022
U prvom, uvodnom poglavlju je spomenut transformator kao glavni element ovog diplomskog rada. Objašnjen je cilj rada i podjela na poglavlja. Drugo poglavlje je teoretsko i sadrži opis transformatora i njegovih karakteristika, u koje spadaju njegove ...
Jurić, Danijel
core   +1 more source