Results 21 to 30 of about 19,372 (204)

Research for shielding effect of three-phase air-core reactors in substation by using different materials

open access: yesThe Journal of Engineering, 2018
To research the magnetic field interference on cables nearby three-phase air-core reactors and the shielding effect of different materials, this study analysed the influence on spatial magnetic field by using high-conductivity materials and high ...
Tao Wenbiao   +4 more
doaj   +1 more source

Multi-objective optimal scheduling strategy for wind power, PV and pumped storage plant in VSC-HVDC grid

open access: yesThe Journal of Engineering, 2019
Zhangbei demonstration project will be the world's highest voltage level and largest capacity VSC-HVDC power grid, by which millions of kilowatts of renewable energy and pumped storage power will be supplied to Beijing.
Man Xu, Linlin Wu, Hui Liu, Xiao Wang
doaj   +1 more source

Optimal Capacity Sizing for the Integration of a Battery and Photovoltaic Microgrid to Supply Auxiliary Services in Substations under a Contingency

open access: yesEnergies, 2020
Auxiliary services are vital for the operation of a substation. If a contingency affects the distribution feeder that provides energy for the auxiliary services, it could lead to the unavailability of the substation’s service.
Alejandra Tabares   +5 more
doaj   +1 more source

Research on overvoltage and minimum air clearance on 1000 kV AC side of converter transformer in ±1100 kV Guquan converter station

open access: yesThe Journal of Engineering, 2019
In the hierarchically connected ultra-high voltage (UHV) DC projects, the minimum air clearance on the 1000 kV AC side of converter transformer directly affects the layout and area of the valve hall.
Lou Ying   +3 more
doaj   +1 more source

Generalised resilience models for power systems and dependent infrastructure during extreme events

open access: yesIET Smart Grid, 2019
This study presents a generalised critical infrastructures resilience model for extreme events with a focus on power grids. Infrastructures are modelled as three domains – physical, cyber, and human.
Vaidyanathan Krishnamurthy   +5 more
doaj   +1 more source

Active Reduction of Short-Circuit Current in Power Distribution Systems

open access: yesEnergies, 2020
In this paper, a new concept of short-circuit current (SCC) reduction for power distribution systems is presented and analyzed. Conventional fault current limiters (FCLs) are connected in series with a circuit breaker (CB) that is required to limit the ...
Esteban Pulido   +3 more
doaj   +1 more source

Selecting Communication Technologies for an Electrical Substation Based on the AHP

open access: yesIEEE Access, 2023
Traditional communication technologies for distribution substations will soon have difficulties meeting the needs of emerging applications. This is due to exponential population growth and future energy demands, necessitating a reliable and fast response
Nayli Adriana Azhar   +9 more
doaj   +1 more source

Insulator fault feature extraction system of substation equipment based on machine vision

open access: yesIET Networks, EarlyView., 2022
Abstract The artificial intelligence technology and intelligent automation are more and more widely used, the insulators play a supporting and insulating role in the operation of the grid. The use of machine vision inspection technology to detect insulator faults has become an inevitable trend of the times.
Keruo Jiang   +4 more
wiley   +1 more source

Effects of Aging on Condition of In-Service Transformer Oil: The Study Case of 150 kV/20 kV Substations in Crete

open access: yesEnergies
The effect of aging on the condition of the oil and the insulating paper of transformers, based on the oil analysis of a fleet of 150 kV/20 kV power transformers, is presented in this paper.
Nikolaos Mavrikakis, Kiriakos Siderakis
doaj   +1 more source

Impact analysis of traction loads on power grid based on probabilistic three-phases load flow

open access: yesThe Journal of Engineering, 2019
Electrified railway traction power supply system is directly powered by 110 kV or 220 kV (some 330 kV) high-voltage power grid. The uncertainty, non-linearity, and asymmetry of traction loads like the electric locomotives and electric multiple units ...
Yulong Che   +5 more
doaj   +1 more source

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