Results 71 to 80 of about 3,753 (203)
High Voltage, EarlyView.ABSTRACT Strong wind–sand weather in Xinjiang threatens power grid safety by increasing transmission line tripping risks. Existing studies focus on sand polarization but neglect the coupled influence of high‐speed airflow and charged sand on gap discharge characteristics.
Jianghai Geng +8 more
wiley +1 more source
An Investigation into Substation Grounding and Its Implementation on Gaza Substation
Energy and Power Engineering, 2011 An investigation into the optimal design of a substation grounding system for the transmission substation in Gaza City, Palestine has been carried out. A research into the most influential parameters on the effectiveness of the substation grid system has been performed and its results have been incorporated into the Gaza case study.
Ahmed Hammuda +2 more
openaire +2 more sources
High Voltage, EarlyView.ABSTRACT The disintegration behaviour of ice‐melting droplets aggravates the discharge risk of ice‐covered insulators and the disintegration characteristics of droplets at applied voltages exceeding the critical discharge voltage lack in‐depth study.
Lin Yang +6 more
wiley +1 more source
Techno-economic evaluation of power electronics-assisted transmission system frequency regulation
The Journal of Engineering, 2019 In many future power systems, the power generation may be predominantly supplied from converter interfaced sources (i.e. wind, solar, HVDC interconnection).
Rakibuzzaman Shah +3 more
doaj +1 more source
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 +2 more
wiley +1 more source
Electrical engineering & Electromechanics, 2018 Purpose. The purpose of the work is to develop the fundamentals of the design methodology of grounding system design of substations with open switchgears 330 (220) kV, which is aimed at ensuring electromagnetic compatibility of secondary circuits of ...
O. Yu. Glebov +3 more
doaj +1 more source
High Voltage, EarlyView.ABSTRACT This paper provides an overview of high‐temperature superconducting (HTS) cables in DC systems, with a focus on their deployment in high‐voltage DC (HVDC) networks. The assessment of HTS cable properties—such as extremely low electrical resistance, high current‐carrying capacity and a compact geometry—and their comparison with those of ...
Mohammad Hossein Mousavi +2 more
wiley +1 more source
Electrical engineering & Electromechanics, 2014 The analysis made has shown expediency of modernization rather than reconstruction of earth electrodes, after inspection of long operating substations grounding grids, via building a two-level structure.
I.V. Nizhevskiy, V.I. Nizhevskiy
doaj
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 +7 more
wiley +1 more source
PowerGPT‐R1: Vision‐Language Reinforcement Fine‐Tuning With Verifiable Reward for Power Inspection
High Voltage, EarlyView.ABSTRACT Vision‐driven intelligent power inspection systems have long faced the challenge of scarce high‐quality datasets in specialised domains, leading to limited performance of traditional deep learning methods (e.g., Faster‐RCNN) in few‐shot learning scenarios. Recent breakthroughs in language models, particularly the open‐source DeepSeek‐R1 model,
Yangyang Zhong +12 more
wiley +1 more source