Question

A 113 km, single-circuit, three-phase line consists of z = 0.546∠67.53° W/km and y=3.212∠90° μS/ km. The line delivers a load of 60 MW at 230 kV with 0.8 power-factor lagging.

1. If the above transmission line in Problem 3 has a length of 350 km and still delivers the same load at the rated voltage (230 kV).

   1. a) Find the voltage, current, real and reactive power, and the power factor at the sending

      end in both per unit and absolute units.

   2. b) What is the percent regulation of the line?

Answer 1

Импʼ Long 350 km tVvn ウ)98-27 Aヲ IT, = 18s-27A hJe knoh ラ 046 3 △57-63 191-1 χ'ь A12-4- zc .109 g7-83] 「132734-4520 09188-21-36-86 V^- -lojxi32794.45 197-83 x188-21436-6 らア !78-41と7.0KV

S43.39 -1.45) MVA 1.45MVA P-Powerf.dr. C-s(1-322) ที่ 0.99' ラー Her A: 23D 0.88 23o