Results 1 to 10 of about 68,866 (316)

Effect of Multiple Reclosing Time Intervals on Axial Vibration of Winding

open access: yesApplied Sciences, 2023
When a transformer suffers a permanent fault, it will suffer a short-circuit impulse again after reclosing. If the previous vibration of the winding is not attenuated completely and the winding is subjected to a secondary impulse within a short time, the
Lu Sun   +12 more
doaj   +1 more source

Entire process of surface discharge of GIS disc-spacers under constant AC voltage

open access: yesHigh Voltage, 2020
Surface contamination on the disc-spacers is one of the main threats to the safe operation of gas insulated switchgear (GIS) insulation. The authors’ research has confirmed the phenomena of intermittent discharge of such defects under AC constant voltage
Chenhao Zhao   +6 more
doaj   +1 more source

The feasibility of continuous basalt fibre‐reinforced polymer application to composite cross‐arms

open access: yesHigh Voltage, 2023
Composite cross‐arms have the advantages of high lightning resistance but impose onerous requirements on mechanical and insulation reliability. Traditional glass fibre composites fail to meet the needs of practical applications.
Yunpeng Liu   +6 more
doaj   +1 more source

The influences of silane coupling agents on the heat and moisture resistance of basalt fibre‐reinforced composites

open access: yesHigh Voltage, 2023
Basalt fibre composite materials have shown good application prospects in electrical equipment, but their reliability can be affected by damp‐heat ageing.
Yunpeng Liu   +5 more
doaj   +1 more source

Key Technologies and Business Model of Shared Towers for Power and Communication

open access: yesZhongguo dianli, 2021
The arrival of 5G communication era provides new opportunities for the development of communication operators, but also brings new challenges. The construction of 5G communication needs more and more iron tower resources.
Weibo ZHAO   +4 more
doaj   +1 more source

Methodology to Evaluate the Impact of Electric Vehicles on Electrical Networks Using Monte Carlo

open access: yesEnergies, 2021
In preparation for the electric mobility technological transition in Colombia, an impact assessment of the electric power system is required, considering the increasing loading that must be able to be managed in the future.
Daniel Betancur   +7 more
doaj   +1 more source

Fault Detection in Power Distribution Networks Based on Comprehensive-YOLOv5

open access: yesSensors, 2023
Real-time fault detection in power distribution networks has become a popular issue in current power systems. However, the low power and computational capabilities of edge devices often fail to meet the requirements of real-time detection.
Shengsuo Niu   +5 more
doaj   +1 more source

Research on automatic location and recognition of insulators in substation based on YOLOv3

open access: yesHigh Voltage, 2019
With the development of a smart grid, the automatic location of power equipment is becoming a trend. In this study, a method for automatic location identification and diagnosis of external power insulation equipment based on YOLOv3 is proposed. This deep
Yunpeng Liu   +6 more
doaj   +1 more source

Magnetic Field Visualization Teaching Based on Fusion Method of Finite Element and Neural Network

open access: yesApplied Sciences, 2022
We developed a visual teaching platform that can calculate the magnetic field of magnetic core inductance in real time. The platform adopts the combination of two theories of finite element calculation and neural network technology.
Guang Yang   +5 more
doaj   +1 more source

Electrical Tree Initiation Properties in Cross-Linked Polyethylene Under DC-Impulse Composite Voltages

open access: yesIEEE Access, 2018
DC cables may be subjected to impulse overvoltage during operation, which may cause electrical tree inside the cable insulation. So, it is necessary to investigate the influence of impulse voltage on the insulation of dc cable.
Hechen Liu   +5 more
doaj   +1 more source

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