Emad El-Sharkawi

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The surface temperature of energized, wetted by steam fog, polluted insulator string model was measured and scanned from the instant of voltage application using an infra-red camera. Visicorder oscillographs were used to trace and record the leakage currents. Results show that the presence of capacitance increases the maximum surface temperature, enhances(More)
Temperature distribution on the surface of an energized polluted insulator has been measured using infra-red hermo thermovision techniques. Temporal variation of temperature has also been determined. Tests were carried out on a conventional ional cap and pin insulator unit. Results show that the maximum temperature of the energized insulator could be as(More)
This paper describes the design of the ac auxiliary power distribution system of a large multi-unit thermal power station located near Cairo, Egypt. The design features unitized auxiliary systems, shared start-up sources, and a combustion turbine-generator capable of feeding into each unit's electrical auxiliary system. The combustion turbine -generator is(More)
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