Results 71 to 80 of about 1,976 (165)

Wave‐Velocity‐Based Temperature Monitoring Applied to Underground Power Cables in Medium‐Voltage Networks—Discrimination of Individual Cable Temperatures in a Distribution Grid

High Voltage, EarlyView.
ABSTRACT The thermal state of underground power cables can be monitored based on the temperature dependency of the dielectric permittivity of the insulation material. The resulting temperature‐dependent wave velocity is used as a thermometric property. To this end, the signal propagation time along a cable of an injected signal is determined.
Peter Wouters, Peter van der Wielen, Yan Li   +2 more
wiley   +1 more source

Image Restoration Algorithm and Propagation Mechanism of Partial Discharge Streamer in Oil–Pressboard Insulation Needle–Plate Electrode

High Voltage, EarlyView.
ABSTRACT Oil–pressboard system is the main insulation form of oil‐immersed transformers, which is prone to partial discharge (PD) and subsequent faults due to contamination or moisture ingress. To investigate the evolutionary characteristics of PD streamers under varying voltages and insulation dimensions, streamer images were captured using a high ...
Luyao Liu, Hongshun Liu, Ali Mohammed Ali Abdo, Hongbin Wu, Pengfei Lu, Qingquan Li   +5 more
wiley   +1 more source

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

High 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, Xinzhe Yu, Yu Deng, Chen Gu, Kun Zhang, Zheyuan Liu, Songsong Zhou, Yueneng Xu   +7 more
wiley   +1 more source

EXTERNAL MAGNETIC FIELD OF URBAN TRANSFORMER SUBSTATIONS AND METHODS OF ITS NORMALIZATION

Electrical engineering & Electromechanics, 2017
Purpose. Research of external magnetic field of urban transformer substations and the methods it reduction to the standard level in the living quarters of nearby. Methodology.
V. Yu. Rozov, D. Ye. Pelevin, K. D. Pielievina   +2 more
doaj   +1 more source

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

IET 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, Tianlong Zhang, Zhenglin Li, Jian Wang, Tao Zhang, Peng Wang, Ruiqi Zhan   +6 more
wiley   +1 more source

Analysis of Carbon Emission Characteristics Over the Entire Life Cycle of Indoor Substation Structures [PDF]

E3S Web of Conferences
As a key infrastructure in the power industry, substations play an important role in achieving the strategic goal of “dual carbon”, and their sustainable development concept radiates to the entire field of structural buildings and ecological buildings ...
Wu Jingyun, Huang Zheng, Liu Hao
doaj   +1 more source

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

International 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

Visualization Guidelines for the Control Room: An Evaluation of Visual Alert Encoding with Domain Experts

Computer Graphics Forum, EarlyView.
Abstract Visualization is routinely used in control rooms to maintain situational awareness of complex sociotechnical systems. While control room design often incorporates human factors engineering to identify the information presented, it is not unusual for control room visual encodings to rely closely on operator experience and historical encodings ...
P. Baudains, A.I. Meso, G. Todeschini, R. Borgo   +3 more
wiley   +1 more source

Risks of concealing environmental degradation

Conservation Biology, EarlyView.
Abstract Current practice seeks to conceal the visual impact of land‐use change (i.e., development). Six percent of development impact assessments in Australia and 14% of the World Bank's assessments recommend visual impact mitigation. This mitigation results in, for example, vegetated buffer strips alongside cleared agricultural areas and earthen ...
Matt W. Hayward, Kaya Klop‐Toker, Salim Momtaz, Eliza Payne, Louisa Rebec, Robert J. Scanlon, Craig M. Shuttleworth, Nick Valentine, Andrea S. Griffin   +8 more
wiley   +1 more source

Optimal Sizing of a Hybrid Renewable Energy System for Auxiliary Services in Substations Through Genetic Algorithm and Variable Neighborhood Search

IEEE Access
Auxiliary services in substations are fundamental systems for the operation and coordination of power electrical systems. Because of their importance, backup systems are utilized to support critical loads during main power supply failures.
Matheus Holzbach, John Fredy Franco Baquero, Mariana Resener   +2 more
doaj   +1 more source