Estimation of Transient over Voltages in Gas Insulated Busduct from 220kv Gas Insulated Substation
نویسندگان
چکیده
منابع مشابه
Effect of Very Fast Transient over voltages at high frequency in a Gas Insulated Substation during switching operations
Due to the opening or closing of circuit breakers and disconnect switches in Gas Insulated Substations (GIS), especially in the pumped storage power stations, Very Fast Transient Over-voltages (VFTO) are generated. This paper describes the 500 kV and 750 kV GIS. The variations of VFTO magnitudes at different points in 500 kV and 750 kV GIS during different switching operations have been calcula...
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Gas-insulated substations (GIS) have different specifications in proportion to air-insulated substations. Transformer failures related to lightning and switching are often reported in the gas insulated substation (GIS). This problem is the voltage magnifications due to reflections of switching and lightning surges at various junctions within the GIS. thereby overvoltages in GIS are more importa...
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An important task of the asset management process is the evaluation of the long-range investment and resource planning of the assets of the complete power system and the life cycle cost assessment of different type of substations. The calculation of the long-range investment and resource planning can be performed by using dynamic asset simulation tools, which represent the statistical behavior ...
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This study presents the manner in which transient modeling concepts, which are fully analyzed in the referred standards, are implemented, for the purpose of evaluating the Transient Ground Potential Rise (TGPR). This is a phenomenon of 10–100kV voltages with up to 10μs duration on the grounded enclosure of Gas Insulated Substations (GIS), which may cause concern for personnel safety and problem...
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During switching of disconnectors (DS) in GIS a varying number of pre-strikes and re-strikes occur. Due to the very short duration of the voltage collapse, traveling surges are generated in the busbar duct. These very fast transient overvoltages (VFTO) can become the limiting dielectric stress which defines the dimensions at UHV voltage levels. The decision shall be based on the maximum VFTO pe...
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ژورنال
عنوان ژورنال: International Journal of Computer Applications
سال: 2011
ISSN: 0975-8887
DOI: 10.5120/2458-2813