Results 81 to 90 of about 23,177 (239)

A Traction Three-Phase to Single-Phase Cascade Converter Substation in an Advanced Traction Power Supply System

open access: yesEnergies, 2015
The advanced traction power supply system (ATPSS) is a new directional development for traction power supply systems, which can totally remove the neutral sections and effectively promote power quality.
Xiaoqiong He   +5 more
doaj   +1 more source

Temperature Extraction Scheme for Composite Insulator Core Rod Sheath of Overhead Transmission Lines Based on Oriented Bounding Boxes

open access: yesHigh Voltage, EarlyView.
ABSTRACT Unmanned Aerial Vehicle (UAV) inspection of overhead transmission line composite insulators allows for the rapid acquisition of large amounts of infrared images of insulators in service, which can be used to analyse their operational status. However, efficiently and accurately analysing these images remains a challenge.
Zhenan Zhou   +7 more
wiley   +1 more source

Design and Implementation of the Wireless Data Acquisition System for Substation Based on IEC61850 and WIA-PA

open access: yes, 2015
This paper presents a wireless data acquisition system for substation based on IEC61850 and WIA-PA, which can standardize the monitoring data transmission in a wireless way.
Cui SJ(崔世界)   +5 more
core   +1 more source

A Key Management Schema Based on ECC to Secure the Substation and Control Center Communications in Smart Grids [PDF]

open access: yesComputer and Knowledge Engineering, 2019
Since the invention of electricity, global power grids have been at the forefront of technological advances. The antiquated infrastructure of power system which provides power to the city's homes, factories and businesses are replaced with a new power ...
mostafa Farhadi Moghadam   +2 more
doaj  

Research on Reactive Power Compensation Device in UHV AC Substation Connected Directly to 500 kV Busbar

open access: yesZhongguo dianli, 2019
Site selection is often difficult for the 1 000 kV UHV AC substation due to its many-grouped reactive power on the low-voltage side of main transformer and the large space occupation.
Lan GUAN   +5 more
doaj   +1 more source

Application Status and Development Trends of DC Ice‐Melting Devices in China's Power Grid

open access: yesIET Smart Energy Systems, EarlyView.
This paper summarises the development history and engineering application status of DC ice‐melting devices (DCIMD) in China, analyses the principles, advantages, disadvantages and adaptability of mainstream topologies and discusses the key problems and corresponding improvement directions.
Ming Lei   +6 more
wiley   +1 more source

GOVERNING THE CLOUD: Infrastructural Statecraft and the Political Ecology of Digital Expansion in Oregon

open access: yesInternational Journal of Urban and Regional Research, EarlyView.
Abstract Oregon's wave of data center and semiconductor projects shows how cloud capitalism reorganizes resource systems and territorial governance. Examining Amazon, Google, and Intel, the article traces how fiscal incentives, utility programs, and land‐use instruments are recalibrated to secure hyperscale loads.
Justin Kollar
wiley   +1 more source

Maintenance considerations in applied substation reliability assessment

open access: yes, 1997
This paper presents a reliability assessment of a substation, part of the Queensland transmission network in Australia. As part of a maintenance considerations, this study utilises the substation reliability assessment package STAREL to quantitatively ...
Stapleton, G.M., Nourbakhsh, Ghavameddin
core  

Home foreclosure discounts in auctions without reserve prices

open access: yesReal Estate Economics, EarlyView.
Abstract This article estimates foreclosure discounts in Cape Town, South Africa, where, until 2019, foreclosure auctions occurred without reserve prices. Using newly constructed data linking sheriff auction notices to the universe of property transactions, rich property characteristics, and municipal service‐request records, I document large ...
Allan Davids
wiley   +1 more source

A frequency-based RF partial discharge detector for low-power wireless sensing

open access: yes, 2010
Partial discharge (PD) monitoring has been the subject of significant research in recent years, which has given rise to a range of well-established PD detection and measurement techniques, such as acoustic and RF, on which condition monitoring systems ...
Baker, P.C.   +2 more
core   +1 more source

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