Results 51 to 60 of about 5,269 (164)

Partial discharges measurement by UHF method [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2020
The unconventional UHF (Ultra High Frequency) method of measuring partial discharges (PD) is based on measuring electromagnetic waves (EM) in the UHF frequency band (300-3000) MHz, using appropriate antennas.
Malešević Nevena   +3 more
doaj  

Research on Power Frequency Insulation Properties and Configurations of CF3SO2F Gas Mixture for Industrial Applications

open access: yesHigh Voltage, Volume 11, Issue 2, Page 556-563, April 2026.
ABSTRACT The breakdown characteristics of the novel eco‐friendly insulating gas CF3SO2F are fundamental to the design of gas‐insulated equipment. In this paper, the gas mixture parameters for CF3SO2F were optimised for different ambient temperatures in order to ascertain the insulation performance and liquefaction temperature constraints.
Shubo Ren   +5 more
wiley   +1 more source

A novel multi‐slice electromagnetic field‐circuit coupling method for transient computation of long‐distance gas‐insulated transmission lines

open access: yesHigh Voltage
Accurate calculation of short‐circuit electromagnetic force is crucial for both mechanical strength check and the optimal design of gas‐insulated transmission lines (GIL).
Shucan Cheng   +3 more
doaj   +1 more source

SW‐YOLO: An Optimized YOLOv8 Architecture With ConvNeXt for Real‐Time and Accurate Substation Wiring Inspection

open access: yesEngineering Reports, Volume 8, Issue 3, March 2026.
The study uses affine transformation, contrast enhancement, and mosaic masking for image enhancement and introduces the Convolutional NeXt module in YOLOv8 based on masked self‐encoder and response normalization, along with improvements to the convolutional block attention module.
Yu Lei, Zhihao Liang, Jiayun Huang
wiley   +1 more source

Highly Selective Adsorption of Fluorinated Gases by Porous Organic Cages – Effects of Fluorinated Side‐Chains

open access: yesAdvanced Materials, Volume 38, Issue 7, 2 February 2026.
A systematic study of a series of porous organic cages with perfluorinated alkyl side‐chains of different lengths is presented. The structure‐property relationship of the various cages on gas sorption of highly potent greenhouse gases, such as perfluorocarbons (PFCs), sulfur hexafluoride (SF6), and nitrogen trifluoride (NF3) is investigated.
Ke Tian   +8 more
wiley   +1 more source

Possibilities for minimising sulphur hexafluoride use for HV switchgear asset renewal: An Australian case study

open access: yes, 2016
The 40 year dominance associated with SF6 insulated HV switchgear is placing utilities in potentially vulnerable environmental positions. With the ongoing replacement of obsolete oil designs expected to finalise in the next decade, then Australian ...
Marland, Michael   +3 more
core   +1 more source

Restrike characteristics of vacuum circuit breaker in its opening process under DC voltage

open access: yesIET Science, Measurement & Technology, 2023
The restrike of vacuum circuit breaker during the breaking process causes overvoltage and intensifies the insulation deterioration of high‐voltage equipment. To solve this problem, the vacuum breaker aging test method and the restrike characteristics are
Jixing Sun   +8 more
doaj   +1 more source

Optimal Network Reconfiguration to Improve Network Reliability and Voltage Profile in Distribution Systems Using Chaotic Linear Decreasing Inertia Weight‐Based Particle Swarm Optimization

open access: yesEngineering Reports, Volume 8, Issue 2, February 2026.
Graphical abstract illustrates the optimization process in MATLAB software for network reconfiguration to improve reliability and voltage profile using PSO‐CLDIW. ABSTRACT The growing energy demand has intensified reliability challenges in power distribution systems.
Samson Ademola Adegoke   +3 more
wiley   +1 more source

Nonstructural Design Requirements for Functional Recovery Performance

open access: yesEarthquake Spectra, Volume 42, Issue 1, February 2026.
Work is underway in the United States to develop the first generation of prescriptive seismic design provisions for functional recovery. The Building Seismic Safety Council (BSSC) has proposed targeting a 25% probability of exceeding 0 days for functional recovery category (FRC) A, 3 days for FRC B, 2 months for FRC C, and 6 months for FRC D at the ...
Kristen Blowes   +5 more
wiley   +1 more source

Comprehensive Structural Reliability Assessment When Choosing Switchgear Circuits for 35–220 kV Step-Up Substations

open access: yesEnergies
The basic requirements for the design of a switchgear for main 35–220 kV step-down substations are reliability and efficiency. Switchgear circuits are chosen depending on the number of supply and transit lines and transformers, the substation’s place in ...
Aleksandra V. Varganova   +5 more
doaj   +1 more source

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