3. Bus 2 DFW Bus 5 VAL Bus 3 UT Bus 1 HOU Bus 7 WIND Bus 4 SA Bus 6 COAL
300 km
250 km
150 km
400 km
500 km
Bus 3 UT
Bus 1
HOU
Bus 7
WIND
Bus 4 SA
Summer Peak, 3 kW per person, 20 million people, 60 GW
Winter Peak, 80% of Summer Peak
Spring/Fall Peak, 50% of Summer Peak
Nightime, 50% of Daily Peak
Approx 5% losses
No Wind
(Good Wind)
Bus 6
COAL
BUS
LOAD % OF TOTAL
GEN
% OF TOTAL
1, HOU
30%
45%
2, DFW
25%
15% ( 10%)
3, UT 5%
4, SA
20%
10%
5, VAL
6, COAL
15% ( 5%)
7, WIND
5% ( 20%)
Positive-sequence line constants for each 345kV circuit:
R = 0.06 Ω/km per conductor
L = 1 µH/m
C = 12 pF/m
Rating = 800 A per conductor