Results 51 to 60 of about 293 (157)
IEEE AccessThe Ultra-High Frequency (UHF) method is widely used for live detection of partial discharge in GIS (Gas Insulated Switchgear). To ensure the accuracy of the detection results, it is necessary to regularly calibrate the performance of UHF sensors ...
Tian Tian +7 more
doaj +1 more source
Engineering Reports, Volume 7, Issue 11, November 2025.Based on a multi‐dimensional diagram model, a technique for visual verification of the risk of starting substation equipment is studied. This method can effectively and precisely verify the possible risks during the substation equipment startup and enhance the power system's operational safety.
Lifan Mao +4 more
wiley +1 more source
Very Fast Transient Overvoltage Analysis on 245 kV Gas Insulated Substation
, 2022 Gas-insulated Substations play an important role in power systems today but are adversely affected by the generation of Very Fast Transient Overvoltages (VFTO).
Anuj Paul +4 more
core +1 more source
Energy Science &Engineering, Volume 13, Issue 11, Page 5605-5626, November 2025.ABSTRACT There is a need to develop an improved insulating material that surpasses traditional insulators in terms of insulation and efficient operation under extreme weather conditions. Epoxy nanocomposites (NCs) have gained considerable attention due to their intrinsic material properties.
Abubakar Siddique +7 more
wiley +1 more source
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
Prediction of switching transient electromagnetic fields in gas-insulated substations
Due to the opening or closing operation of circuit breakers and disconnected switches in gas-insulated substations (GIS), a very strong transient wave process can be generated along the three-phase transmission system and transient electromagnetic field ...
Tabara, D. +3 more
core +1 more source
Analysis of Electric Field Intensity in Gas Insulated Busduct [PDF]
, 2014 Gas insulated substations (GIS) have received great interest in the recent years. One of the advantages of GIS over conventional substations is their compactness which makes them a favourite for service in urban residential areas.
J. Amarnath, D. Subbarayudu
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, 2023 This paper investigates the impact of trapped charges on Very Fast Transient Overvoltages (VFTOs) in 400 kV Gas Insulated Substations (GIS) systems. VFTOs pose significant challenges to the design, insulation coordination, and long-term reliability of ...
Alhazmi, Mohammed +3 more
core +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
UHF diagnostic monitoring techniques for power transformers
, 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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