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Power companies have to maintain the rms voltage level at each customer's location. Assume the acceptable deviation is +- 5.8%. Thus, a nominal rms voltage of 120 V will range from 113 to 127 V. Suppose the line to line voltage at Customer A is 13.8kV, the load at customerA consumes complex power (1.2+j1.2)x 10^6 W.

Customer A is connected to a power plant via a three-phase line and each phase line has the impedance of 1.8+j14.4.

a) What line to line voltage at the plant is needed to generate a line to line voltage of 13.8 kV at the customer.

b) Could the voltage create problems for other customers requiring 13.8V?

Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M9700590

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