An electricity power plant delivers energy at a rate of 20 MW to a city 1 km away. The common voltage output of commercial electricity generator is 22 kV. In order to reduce the power loss during transmission, a step-up transformer is used to boost the voltage to 230 kV before transmission. If the resistance of the transmission wires is 2 Ω and the electricity cost is about HK$1 per kWh, estimate the cost of electricity loss due to “joule heating” in the wires in one day.

An electricity power plant delivers energy at a rate of 20 MW to a city 1 km away. The common voltage output of commercial electricity generator is 22 kV. In order to reduce the power loss during transmission, a step-up transformer is used to boost the voltage to 230 kV before transmission. If the resistance of the transmission wires is 2 Ω and the electricity cost is about HK$1 per kWh, estimate the cost of electricity loss due to “joule heating” in the wires in one day.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter3: Magnetic Starters

Section: Chapter Questions

Problem 30SQ

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