Abstract The internal insulation defects in gas insulated equipment leading to partial discharges will affect the performance of equipment. Among them, surface are a typical type discharge, which often occurs at basin-type insulators. To realize effective discharge detection and degree determination, refined stage division strategy for gas-insulated creeping based on multi-physical information ...

Sulfur hexafluoride (SF₆) gas decomposition results from the energy produced by partial discharge (PD). The detection of SO₂ and H₂S content, as important characteristic components of the decomposition products, is significant in the determination of the insulation level of SF₆ gas and the inside insulation faults of gas-insulated equipment. A number of gas sensors use carbon nanotubes (CNTs). ...

Gas-insulated switchgear malfunctions during power system operation may occur due to electrical, thermal, or human errors in the manufacturing process. The leading causes of insulation deterioration gas-insulated are discharging along surface caused by dirt on insulating material, internal discharge impurities and cavities corona poor assembly construction at site, electric tree channel intense...

Iran's proved natural gas reserves are the world's second largest reserves. Mainly, because of different climate changes and different reservoirs characterizations, studying the behavior of producing outcome fluids and their transportation, is of major interest. One of the main problems occur in the gas reservoirs is related to the hydrate formation while producing from a well, either in produc...

Abstract: In recent years, SF6 gas insulated switchgear (GIS) has become more widespread in electrical power substations and GIS rated from 66 to 1100kV are working successfully. The GIS is used in closed vessels, isolated from the atmosphere. This gives it intrinsically high insulation reliability because there is no contact with dirt or contaminates. To assure even better reliability, measure...

The detection of partial discharge and analysis of the composition and content of sulfur hexafluoride SF₆ gas components are important to evaluate the operating state and insulation level of gas-insulated switchgear (GIS) equipment. This paper reported a novel sensing material made of pure ZnO and NiO-decorated ZnO nanoflowers which were synthesized by a facile and environment friendly hydrothe...

Remanufacturing has emerged as a way to solve production problems, raw material costs increase and environmental pollution caused by discarded equipment occurs. The process can extend product lifetime prevent waste of resources. In particular, it economical efficiency for large such GIS (Gas Insulated Switchgear). crucial points in remanufacturing are determining replaceable parts economic valu...