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Code Name KIWI Al Area CMIL 2167000 Strand Diameter GMR Al/St Cm Cm 72/7 4.4069 1.7374 60 Hz Resistance, /Km Ampacity 25C° 50C° A 0.02940 0.03 190 1465
A 195km, 275 kV, 3-phase, single circuit 60Hz transmission line has a horizontal spacing as shownbelow. Each phase of the line consists of a bundle of two ACSR KIWI conductors. [50 marks] a) Find the per-phase resistance (at a temperature 50°C), and the conductor diameter and its GMR[5 marks], b) Calculate the per-phase inductance and the per-phase shunt capacitance of the line. Assume bundle spacing, d = 0.45 m. [14 marks] Find the % change in inductance and capacitance if the 2-conductor bundle is replaced with a 4-conductor bundle with the same conductors and same bundle spacing, where d = 0.45 m. [18 marks] d) Use MATLAB to check your results in parts (b) and (c), i.e. provide screenshots (showing the line geometry and parameters matching your calculation results). [13 marks] O O 15m 10m