Results 51 to 60 of about 30,341 (295)
High Voltage, EarlyView.Abstract Accurately identifying the location and type of internal defects in gas‐insulated switchgear (GIS) is a challenge. To address this challenge, this study proposes a novel method for the nondestructive detection of GIS internal defects. This method is based on x‐ray digital radiography (X‐DR) technology and an improved real‐time models for ...
Guote Liu +3 more
wiley +1 more source
The Recognition of Fires Originating from Photovoltaic (PV) Solar Systems [PDF]
, 2015 There has been an observable increase in the fitting of photovoltaic (PV) solar panels on the roofs of buildings in the UK over the last decade. The origin of some fires in domestic and commercial properties has been attributed to PV systems.
Prometheus Forensic Services Limited +1 more
core
High Voltage, 2019 High-voltage direct current circuit breakers (HVDC CB) are one of the key technologies of multi-terminal DC systems and DC grids. Different from other equipment that use a large number of power electronic devices, the HVDC CB cannot obtain its power from
Xiangyu Zhang +7 more
doaj +1 more source
Energies, 2021 Currently, the existing condition-based maintenance (CBM) diagnostic test practices for ultrasound require the tester to interpret test results manually. Different testers may give different opinions or interpretations of the detected ultrasound.
S. Ishak +5 more
semanticscholar +1 more source
High Voltage, EarlyView.ABSTRACT In this paper, a model‐aided state parameter inversion identification method based on the coil current (CC) of electromagnetic trip device (ETD) is proposed to realise the state parameter inversion online and the quantitative description of defects.
Feiyue Yan +3 more
wiley +1 more source
SF6-Free Gas-Insulated Switchgear: Current Status and Future Trends
IEEE Electrical Insulation Magazine, 2021 This article provides an overview of research on SF6 replacement gases for electric power equipment, of existing SF6-free technologies, and of worldwide developments in legislation to support these new technologies.
C. Franck, A. Chachereau, J. Pachin
semanticscholar +1 more source
Engineering Reports, Volume 7, Issue 6, June 2025.This article proposes a method for detecting partial discharge faults in substation GIS based on multi frequency signal CEEMDAN fusion processing algorithm. The main innovations are as follows: (1) Data acquisition and signal enhancement aspects. Segmented data collection: By analyzing the state structure of typical GIS partial discharge faults, the ...
Yuan Sun, Hao Xie, Li Chang
wiley +1 more source
High Voltage, Volume 10, Issue 3, Page 615-622, June 2025.Abstract CF4 is a major decomposition product of the insulating gas in C4F7N‐insulated gas‐insulated metal‐enclosed switchgear (GIS) during partial discharge or overheating faults. Its detection is essential for effective online monitoring and fault diagnosis of GIS.
Zhicheng Wu +6 more
wiley +1 more source
The General Electric MOD-1 wind turbine generator program [PDF]
, 1979 The design, fabrication, installation and checkout of MOD-1, a megawatt class wind turbine generator which generates utility grade electrical power, is described.
Hobbs, R. B., Poor, R. H.
core +1 more source
High Voltage, Volume 10, Issue 3, Page 660-672, June 2025.Abstract Within 30 min after live operation of gas‐insulated switchgear (GIS), more than 60% of discharge failures are caused by metallic particles. To address this issue, this study explored the vibration propagation mechanisms in GIS cavities and established an equivalent vibration transmission model.
Jian Wang +7 more
wiley +1 more source