S 2
PS1 2 PS1 2(N) 4 PS1 2 108
SN2
PS1 3 PS1 3 76
(kW)
(kW)
(kW)
S 2
PS2 3 PS2 3(N) 4 PS2 3 128
SN2
计算各绕组的短路损耗
PS1 PS2 PS3
121212
( PS1 2 PS1 3 PS2 3) ( PS1 2 PS2 3 PS1 3) ( PS1 3 PS2 3 PS1 2)
121212
(108 76 128) 28(108 128 76) 80(76 128 108) 48
(kW)(kW) (kW)
计算各绕组的电阻
RT1
PS1 U
S
2N
2N2N
10
3
28 1108000
2
2
10
2
3
5.29( )
RT2
PS2 U
S
2N
10
3
80 1108000
2
10
2
3
15.13
( )
RT3
PS3 U
S
2N
2N
10
3
48 1108000
2
10
3
9.08( )
② 计算各绕组的电抗 各绕组的短路电压百分数为
U% S1
12(U
% US1 2
% US1 3
%) S2 3
12
(6.8 16 8.2) 7.3
US2% US3%
1212
(U
% US2 3% US1 3%) S1 2
1212
(6.8 8.2 16) 0.5
(8.2 16 6.8) 8.7
(US2 3% US1 3% US1 2%)
计算各绕组的电抗
XT1 XT2 XT3
US1% U
SN
US2% U
SN
US3% U
SN
2
N2N2N
10
7.3 1108000
2
10 110.41
2
( )
10
0.5 11080008.7 1108000
2
10 7.56 0( )
10 10 131.59( )