Results 31 to 40 of about 1,995,341 (213)

A precise ultra high frequency partial discharge location method for switchgear based on received signal strength ranging

open access: yesInternational Journal of Distributed Sensor Networks, 2020
Partial discharges are the main insulation defects encountered in gas-insulated switchgears. When it occurs inside the gas-insulated switchgear cavity, it degrades insulation, and, sooner or later, causes a breakdown.
Jiajia Song, Jinbo Zhang, Xinnan Fan
doaj   +1 more source

Chemical by-Product Diagnostic Technique for Gas Insulated Switchgear Condition Monitoring [PDF]

open access: yes, 2017
Chemical by product diagnostic technique is an efficient, cost-effective and reliable diagnostic technique for gas insulate switchgear condition monitoring in view of its high sensitivity and anti- internal and external electromagnetic interference and ...
Abdul-Malek, Zulkurnain   +2 more
core   +1 more source

Synthesis of Hollow Nanofibers and Application on Detecting SF6 Decomposing Products

open access: yesFrontiers in Materials, 2019
Hollow structured nanofibers have attracted much attention in diverse domains owing to their unique physicochemical properties and characteristics. Gas sensing is one of the most promising applications.
Zhaorui Lu   +5 more
doaj   +1 more source

Self-Attention Network for Partial-Discharge Diagnosis in Gas-Insulated Switchgear

open access: yesEnergies, 2020
Detecting, measuring, and classifying partial discharges (PDs) are important tasks for assessing the condition of insulation systems used in different electrical equipment.
Vo-Nguyen Tuyet-Doan   +4 more
doaj   +1 more source

Distribusi Medan Listrik di Kompartemen Busbar Gas Insulated Switchgear (GIS) Menggunakan Charge Simulation Method

open access: yes, 2022
Penelitian ini bertujuan untuk mengilustrasikan distribusi medan listrik di kompartemen busbar tipe gas insulated switchgear (GIS). Gas Insulated Substation (GIS) merupakan rangkaian peralatan gardu induk yang terpasang di dalam sebuah metal enclosure ...
Riyani Prima Dewi, Saepul Rahmat
core   +1 more source

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

On Reliability of 110-500 kV GIS: Operational Experience [PDF]

open access: yesE3S Web of Conferences
The accident rate of gas-insulated switchgears (GIS) is considered. The statistical sample covered 30 110-500 kV switchgear switchgears in a vast region of the European part of the country for the period 2008-2022.
Korotchenko Evgeniy   +4 more
doaj   +1 more source

Research on Self‐Identification Technology of Zero‐Value Insulators in Distribution Lines Based on Electroluminescence Effect

open access: yesHigh Voltage, EarlyView.
ABSTRACT To address the issue of low detection accuracy for zero‐value insulators in distribution lines, this study proposes a novel method for detecting these insulators based on the electroluminescence effect. Through theoretical analysis and experimentation, it was found that the luminescence intensity of ZnS:Cu electroluminescent material varies ...
Jianghai Geng   +6 more
wiley   +1 more source

The extraction method of evaluation index of safety insulation status of GIS equipment operation based on simplified indicators

open access: yesDiance yu yibiao
Extracting the characteristic indicators of SF6 gas insulated switchgear that reflects equipment insulation status to evaluate its insulation state is the basis for safe operation.
GAO Yibo   +3 more
doaj   +1 more source

A measurement system for very fast transients in GIS power substations [PDF]

open access: yesE3S Web of Conferences, 2020
In order to acquire the very fast transients during the disconnector operations in GIS (gas insulated switchgear, GIS) of power substation, a novel measurement system is developed and tested.
Wu Yan   +3 more
doaj   +1 more source

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