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Planar capacitor sensors have been widely used for measuring of very fast transients overvoltage (VFTO). A dielectric window made of epoxy was proposed to reduce the time required for installation of the sensor. The thickness of the dielectric window was calculated to provide a SF6 pressure durability, and the frequency response of the dielectric window was investigated by pulse response experiment...
Now Geographical Information System (GIS) and Google Earth (GE) have become increasingly popular within archaeological research contexts. GIS allows to contain and to store, manage and represent the archaeological data, following the different phases of archaeological research. GE uses high resolution satellite images of the entire planet to allow the archaeologists to find archaeological marks and...
South-to-North Water Transfer Project is the strategic move to implement the water resource allocation of China. The east line of the project is carrying out which would bring with it a lot of water environmental and ecological problems because of the wide range, long time and complex environment problems facing as well as some uncertainty the environment and ecology themselves have. In this paper,...
Grounding metallic protrusion defect is one of the most common and hazardous grounding electrode faults in GIS equipments. The present research is designed to explore the evolutionary process of the partial discharge (PD) provoked by grounding metallic protrusion defect in GIS through observing the light and electromagnetic emission phenomena alongside the PD development. On the 252 kV GIS experiment...
Disconnector operations in GIS may generate very fast transient overvoltage (VFTO), which is characterized by its high peak value, short rise time, and high frequencies. Mostly, researches on VFTO are focusing on the apparatus involving in the active circuit. However, VFTO may pass through open devices by electromagnetic coupling. To measure VFTO under this situation, lots of field experiments have...
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