Results 31 to 40 of about 1,442 (197)

Optimization of dynamic MOSA model parameters using ATP/EMTP software tool [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2017
This paper demonstrates the procedure for estimating parameters of a dynamic metal-oxide surge arrester model by using a genetic algorithm, implemented in ATP/EMTP graphic preprocessor (ATPDraw) optimization module.
Jasika Ranko   +3 more
doaj   +1 more source

A Review of Current Issues in State-of-Art of Wind Farm Overvoltage Protection

open access: yesEnergies, 2011
This paper elaborates on several important outstanding issues in the state-of-art of overvoltage protection selection for modern wind farms. The lack of experience with this still-new technology, together with the inherent complexity of wind farm ...
Ranko Goić, Petar Sarajčev
doaj   +1 more source

Tower grounding improvement versus line surge arresters: comparison of remedial measures for high-BFOR subtransmission lines [PDF]

open access: yes, 2015
This paper presents a technical/economic comparison between remedial measures aimed at improving the lightning performance of an existing Italian three-phase 150-kV overhead line.
GATTA, Fabio Massimo   +4 more
core   +1 more source

A wireless system for monitoring leakage current in electrical substation equipment [PDF]

open access: yes, 2016
In this paper, the design and the development of a remote system for continuous monitoring of leakage currents and ground currents in high voltage electrical substations are proposed.
Bogias, A. C.   +4 more
core   +1 more source

Modelling of Low-Voltage Varistors’ Responses under Slow-Front Overvoltages

open access: yesElectronic Materials, 2023
In this study, commercially low-voltage MOVs are exposed to switching surges to analyse and model the relationship between the number of surges and the MOV grain barrier height response.
Lutendo Muremi   +2 more
doaj   +1 more source

Semiconductor devices in solid-state/hybrid circuit breakers: current status and future trends [PDF]

open access: yes, 2017
Circuit breakers (CBs) are the main protection devices for both alternating current (AC) and direct current (DC) power systems, ranging from tens of watts up to megawatts.
Alan J. Watson   +8 more
core   +1 more source

Alleviation of the transients induced in large photovoltaic power plants by direct lightning stroke

open access: yesAin Shams Engineering Journal, 2023
Lightning strokes are considered the most common passively effective cause on the photovoltaic (PV) power plants compared to the other internal faults. In this paper, a 1 MW solar PV grid-connected power plant was studied.
Abdelrahman Said   +3 more
doaj   +1 more source

Current interruption tests of HVDC circuit‐breakers: Requirements, methods and a testing case

open access: yesIET Generation, Transmission & Distribution, 2022
Development towards HVDC grids is drawing intense development of HVDC circuit‐breakers (CBs). The increasing rated voltage and capacity requires HVDC CBs with excellent performance to be installed and comprehensive tests on HVDC CBs are indispensable ...
Shenli Jia   +6 more
doaj   +1 more source

Towards the prospection of an optimal thermal response of ZnO surge arrester in HV power system [PDF]

open access: yes, 2021
In order to understand the thermal and electrical properties of surge arrester under standard climatic conditions, it would be useful to evaluate the heating progression in its different elements.
Bayadi, Abdelhafid   +2 more
core   +3 more sources

Environmentally friendly compact air-insulated high-voltage substations [PDF]

open access: yes, 2018
This paper investigates the possible options for achieving a substantial reduction in a substation footprint using air-insulated switchgear as a more environmentally-friendly alternative to gas-insulated substations that use SF6 gas.
Albano, Maurizio   +3 more
core   +2 more sources

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