Results 11 to 20 of about 18,644 (181)
UHF diagnostic monitoring techniques for power transformers [PDF]
, 2004 This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J. +3 more
core +2 more sources
Applied Sciences, 2018 The adequate protection against lightning surges and the limitation of the expected annual failure rate of high-voltage substations are critical issues, in an effort to secure the safety of the equipment and the personnel.
Christos A. Christodoulou +4 more
doaj +1 more source
The Journal of Engineering, 2019 AC system which ±800 kV converter station access to commonly used 500 kV voltage level. With the construction of the Northwest Energy Base, a large number of ultra-high-voltage direct current (UHVDC) project are constructing.
Yujian Ding +3 more
doaj +1 more source
The Journal of Engineering, 2018 Resonance or harmonic amplification occurs when the frequency of the harmonics generated by the converter station is near the inherent resonance frequency of the substation.
Liu Helin, Wen Jun, Yu Shiyou, Li Jiaqi
doaj +1 more source
The 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
The 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
Energies, 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
The 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
IET 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
Energies, 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