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For the transmission line of Problem 5.24, calculate the sending-end voltage, sending-end current, power, and power factor when the line is delivering 4500 MVA at 0.9 PF lagging at rated voltage, using the following:

A. Exact formulation.

B. Nominal π approximation.

C. Short-line approximation.

Problem 5.24

Assume that the 1100-kV line of Problems 5.8 and 5.19 is 400 km long and that the subconductor's resistance is 0.0435 ohms/km.

A. Calculate the exact ABCD parameters for the line.

B. Find the circuit elements of the equivalent n model for the line. Neglect earth effects.

Problems 5.19

Calculate the capacitance in farads per meter per phase neglecting earth effect for the IIOO-kV, bundle-conductor line of Problem 5.8. Assume the conductor diameter is 3.556 cm. Repeat including earth effects with h1 = 21.34 m.

Problem 5.8

Calculate the inductance in henries per meter per phase for the 1100-kV, bundle conductor line shown in Figure 5.27. Assume phase spacing D1 = 15.24 m, bundle separation S = 45.72 cm, and conductor diameter is 3.556 cm.

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Electrical & Electronics, Engineering

  • Category:- Electrical & Electronics
  • Reference No.:- M92172189

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