FIGURE 1: SINGLE
LINE DIAGRAM
1. CONVERT ALL IMPEDANCE, LOAD AND VOLTAGE DATA TO PER UNIT
USING SYSTEM BASE QUANTITIES.
G1 G2 Circuit Breaker 180 MW 1 7 www ti T2 www 30 Mvar 30 Mvar 50 MW 50 MW L1 L4 $ LS 3 12 L3 30 Mvar 30 Mvar 50 MW 50 MW 50 MW 30 Mvar
Generator Ratings G1: 100 MVA, 13.8 kV, X"=0.12, x2=0.14, xo=0.05 per unit G2: 200 MVA, 15.0 kV, X"=0.12, x2=0.14, Xo=0.05 per unit The generator neutrals are solidly grounded Transformers Ratings T1: 100 MVA, 13.8 kVA/230 kVY, x=0.1 per unit T2: 200 MVA, 15 kVA/230 kVY, X=0.1 per unit The transformers neutrals are solidly grounded
Transmission Line Ratings All lines: 230 kV, Z1 = 0.08 + j0.5 32/km, Zo=0.2 +j1.5 2/km, yı = j3.3 E-6 S/km Maximum MVA = 400 Line Lengths: L1= 15 km, L2 =25 km, L3 = 40 km, L4 = 15 km, Ls = 50km = Power Flow Data Bus 1: Slack bus, Vi= 13.8 kV, 81 = 0° Bus 2,3,4,5,6 : Load buses Bus 7: Constant voltage magnitude bus, V7= 15 kV, PG7 = 180 MW, - 87 Mvar <Qg7> + 87 Mvar System Base Quantities Sbase = 100 MVA (three-phase) V base = 13.8 kV (line-to-line) in the zone of G1 =
FIGURE 1: SINGLE LINE DIAGRAM 1. CONVERT ALL IMPEDANCE, LOAD AND VOLTAGE DATA TO PER UNIT USING SYSTEM BASE QUANTITIES.
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FIGURE 1: SINGLE LINE DIAGRAM 1. CONVERT ALL IMPEDANCE, LOAD AND VOLTAGE DATA TO PER UNIT USING SYSTEM BASE QUANTITIES.
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