Solution: How much power a 230 kilovolt line rated at 150 amperes transmit over 100 km?

(Last Updated On: December 8, 2017)

Problem Statement: EE Board March 1998

The electric power which a transmission line can transmit is proportional to the product of its design voltage and current capacity, and inversely to the transmission distance. A 115-kilovolt line rated at 100 amperes can transmit 150 megawatts over 150 km. How much power, in megawatts can a 230 kilovolt line rated at 150 amperes transmit over 100 km?

Problem Answer:

It could transmit 675 megawatts over 100 km.

Solution:

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