Results 71 to 80 of about 4,651 (229)
UHF diagnostic monitoring techniques for power transformers [PDF]
, 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
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Analysis of By-Products of N2-SF6 Gas Mixtures Sparked under Inhomogenous Field Conditions [PDF]
, 2004 A vast data on formation of by-products due to arc and spark decomposition of SF6 is available in literature [1–10]. But experimental work relating to N2 - SF6 gas mixtures is limited. In view of increasing application of gas mixtures, it is essential to
AM Casanovas +6 more
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Enhancing Corrosion Resistance of Copper for C4F7N Based Eco‐Friendly Gas‐Insulated Equipment
High Voltage, Volume 10, Issue 5, Page 1125-1134, October 2025.ABSTRACT Perfluoroisobutyronitrile (C4F7N) is recognised as the next‐generation dielectric medium for eco‐friendly gas‐insulated equipment (GIE). However, there is gas metal incompatibility in strong electromagnetic environments and environmentally friendly insulating gas atmospheres that endangers the operational safety and service life of GIE.
Song Xiao +6 more
wiley +1 more source
Revista de Defesa da Concorrência, 2018 O presente artigo, através de metodologia dedutiva, por meio de pesquisa bibliográfica atinente ao tema, especialmente doutrinária e documental, objetiva realizar uma análise crítica sobre o critério de dosimetria das multas aplicadas aos cartéis ...
Rodrigo de Camargo Cavalcanti
doaj
High Voltage, Volume 10, Issue 4, Page 890-902, August 2025.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
Investigation of Partial Discharge in Solid Dielectric under DC Voltage
, 2014 A partial discharge, or PD, is defined as an electrical discharge that is localized within only a part of the insulation between two separated conductors. Recent research on PD mainly focuses on the study of PD characteristics under AC voltage.
Chen, G, He, M, Lewin, P L, Tian, J
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High Voltage, Volume 10, Issue 4, Page 831-844, August 2025.Abstract Mechanical vibration defect is the key factor leading to sudden failure of gas‐insulated switchgear (GIS) equipment. It is important to realise effective prediction of the mechanical vibration state development trend of GIS equipment in order to improve its active safety protection level.
Xu Li +5 more
wiley +1 more source
A novel GIS breakdown location method based on natural frequency of transient voltage
High Voltage, Volume 10, Issue 4, Page 856-875, August 2025.Abstract During on‐site withstand voltage tests of gas‐insulated switchgears (GIS), once a breakdown occurs, it is hard to locate the breakdown position due to the intricate branch structures and minimal breakdown energy. The existing methods may require the placement of a large number of sensors with unsatisfactory accuracy, which adversely affects ...
Qiang Sun +9 more
wiley +1 more source
Applied SciencesAir switchgear is an important power equipment in the transmission, transformation, and distribution process of the power system. Insulation defects can lead to partial discharge, which is one of the primary causes of air switchgear failure.
Yi Tian +3 more
doaj +1 more source
Operational diagnostics of high voltage instrument current transformers [PDF]
, 2016 В статті розглянуто пошкоджуваність високовольтних маслонаповнених вимірювальних трансформаторів струму 110 кВ та наведено приклад визначення поточного залишкового ресурсу цих трансформаторів в умовах неповноти початкових даних.
Рубаненко, Олександр Євгенійович
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