-
Notifications
You must be signed in to change notification settings - Fork 2
/
Auto1bus-step1.dss
29 lines (22 loc) · 1.32 KB
/
Auto1bus-step1.dss
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
// test of 330-MVA autotransformer modeled as YNad1, at a 9-node bus
// see AutoTest.xlsx file in this directory for test data and expected results
clear
new circuit.auto basekV=345.0 phases=3 mvasc3=2000000 2000000
new line.line1 bus1=sourcebus bus2=high switch=yes r1=1e-6 r0=1e-6 x1=0 x0=0 c1=0 c0=0
new xfmrcode.auto phases=1 windings=3 xhl=13.55 xht=17.50 xlt=15.17 %imag=0.0616 %noloadloss=0.0450
~ wdg=1 conn=w kV=106.23 kVA=58667 %r=0.0925
~ wdg=2 conn=w kV= 92.95 kVA=58667 %r=0.1042
~ wdg=3 conn=d kV= 13.80 kVA=24000 %r=0.7031
// the autotransformer is at one bus, HV nodes 1, 2, 3, LV nodes 4, 5, 6, T nodes 7, 8, 9
new transformer.t1a xfmrcode=auto buses=[auto.1.4, auto.4.0, auto.7.8]
new transformer.t1b xfmrcode=auto buses=[auto.2.5, auto.5.0, auto.8.9]
new transformer.t1c xfmrcode=auto buses=[auto.3.6, auto.6.0, auto.9.7]
// bring the autotransformer terminals out to the low and tert buses
new line.high bus1=auto.1.2.3 bus2=high.1.2.3 switch=yes r1=1e-6 r0=1e-6 x1=0 x0=0 c1=0 c0=0
new line.low bus1=auto.4.5.6 bus2=low.1.2.3 switch=yes r1=1e-6 r0=1e-6 x1=0 x0=0 c1=0 c0=0
new line.tert bus1=auto.7.8.9 bus2=tert.1.2.3 switch=yes r1=1e-6 r0=1e-6 x1=0 x0=0 c1=0 c0=0
set voltagebases=[345.0 161.0 13.8]
calcvoltagebases
set tolerance=1e-8
// check 1: no-load test (79.3 + j108.4 kVA)
solve