Results 31 to 40 of about 1,517 (163)

Feasibility analysis of reduced-scale visual corona tests in high-voltage laboratories [PDF]

open access: yes, 2019
Corona is a critical effect that must be considered during the design and optimization stages of high-voltage hardware such as substation connectors, since due to the harmful effects, corona threats power systems reliability.
Abomailek Rubio, Basel Carlos   +2 more
core   +2 more sources

Simulation of Electromagnetic Fields Emitted from GIS Bushing Due to Disconnectors Switching Operation in 1000 kV Substations

open access: yesCSEE Journal of Power and Energy Systems
Switching operations of disconnectors emit electromagnetic fields (EMF) to the external environment via gas-to-air bushing, posing a threat to the secondary equipment in gas-insulated substations (GIS) and potentially causing telecommunications outages ...
Jun Zhao   +5 more
doaj   +1 more source

Recent Advances in the Quest for a New Insulation Gas with a Low Impact on the Environment to Replace Sulfur Hexafluoride (SF6) Gas in High-Voltage Power Network Applications

open access: yesEnergies, 2017
The growing environmental challenge of electrical energy systems has prompted a substantial increase in renewable energy generation. Such generation systems allow for significant reduction of CO2 emissions compared with a traditional fossil fuel plant ...
Abderrahmane Beroual   +1 more
doaj   +1 more source

Nanocrystalline based Mitigation Technique for Very Fast Transient over Voltages in Gas Insulated Substations [PDF]

open access: yes, 2021
: in gas insulated substations, issue of very fast transient over voltages is very familiar problem because of its effects on live ultra-high voltage equipment.
et. al., R.Durga Rao,
core   +1 more source

An Improved Fast Computational Method for Vibration Characteristic Analysis of Dry‐Type Iron Core Reactor

open access: yesHigh Voltage, EarlyView.
ABSTRACT Structural mechanics field simulation plays a critical role in the vibration characteristic analysis of electrical equipment. Existing structural field analysis of equipment based on numerical simulation faces challenges such as convergence difficulties and prolonged computational time, failing to meet the demand for real‐time prediction of ...
Wanqing Wang   +6 more
wiley   +1 more source

UHF diagnostic monitoring techniques for power transformers [PDF]

open access: yes, 2004
This paper initially gives an introduction to ultra-high frequency (UHF) partial discharge monitoring techniques and their application to gas insulated substations.
Bennoch, C.J.   +3 more
core  

Comparison of Dielectric Recovery After Arc Burning in SF6 Gas and Its Potential Alternatives

open access: yesHigh Voltage, EarlyView.
ABSTRACT Although sulphur hexafluoride (SF6) exhibits exceptional insulating properties, it is a potent greenhouse gas. Therefore, studying alternatives to SF6 is critical for developing environmentally friendly high‐voltage electrical equipment.
Ziqi Liu   +4 more
wiley   +1 more source

Adaptive Visual Servo Control for GIS Partial Discharge Detection Robots: A Model Predictive Control Approach

open access: yesEnergies
Gas-insulated switchgear (GIS) serves as the core equipment in substations. Its partial discharge detection requires ultrasonic sensors to be precisely aligned with millimeter-level measurement points.
Yongchao Luo, Zifan Zhang, Yingxi Xie
doaj   +1 more source

Calculation and protection on the lighting intruding waves of 550 kv GIS substation

open access: yesThe Journal of Engineering, 2018
Electromagnetic Transient Programme has been used to calculate the lightning intruding wave of 550 kV GIS substation. The effects of mode operation, surge impedance and length of cable have been considered in the process of calculation.
Dongpeng Sui   +5 more
doaj   +1 more source

Condition Monitoring and Fault Diagnosis Model of Pole Mounted Circuit Breaker Based on Multi‐Source Heterogeneous Cross Modal Information Fusion

open access: yesEngineering Reports, Volume 8, Issue 4, April 2026.
This figure illustrates the architecture of the PMCB fault diagnosis model with multi‐source heterogeneous cross‐modal fusion. It integrates core modules to realize high‐precision, low false‐alarm condition monitoring and diagnosis. ABSTRACT Aiming at the defects of current diagnosis methods for Primary and Secondary Integrated Pole Mounted Circuit ...
Rongrong Shan   +3 more
wiley   +1 more source

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