Chapter 5: Q1CSQ (page 306)
For underground and underwater transmission, why are line losses for HVDC cables lower than those of ac cables with similar capacity?
Therefore, due to the less resistance value HVDC cable has less lossesas compare to AC cable.
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The propagation constant, which is a complex quantity in general, hasunits of ______, and the characteristic impedance has units of ______.
For equivalent circuits of lossless lines, the A and D parameters are pure_____, whereas B and C parameters are pure______.
The maximum power that a lossless line can deliver, in terms of the voltage magnitudesand(in volts) at the ends of the line held constant, and the series reactanceof the corresponding equivalentcircuit, is given by __________, in watts.
In equivalent circuits of lossless lines, is pure____ and pure______.
The following parameters are based on a preliminary line design: per unit, per unit, , . A three-phase power of is to be transmitted to a substation located from the source of power. (a) Determine a nominal voltage level for the three-phase transmission line, based on the practical line load ability equation. (b) For the voltage level obtained in part (a), determine the theoretical maximum power that can be transferred by the line.
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