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Due: Jul 29 Assignment-3 (29/07/2020) Calculate following example: A 110 kV, 50-Hz 175 km long three-phase transmission line consists of three 1.2 cm diameter stranded copper conductors spaced in a 2 m delta arrangement. Assume that temperature is 25˚C and barometric pressure, 74 cm. Assume surface irregularity factor m = 0.85 (roughness factor), mV for local corona = 0.72 and mV for general corona = 0.82 Find: (a) Disruptive critical voltage (b) Visual corona voltage for local corona, (c) Visual corona voltage for general corona and, (d) Power loss due to corona using Peek’s formula under fair weather and wet weather conditions.

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