(三) 功率分布计算: 1、各元件功率损耗: ① 两台T4变压器并联损耗:
′ΔSo=2ΔS0=0.232+j0.352
ΔST4
1110.22+6.22
1.465+j34.705 = RT4+XT4 =UN
= 0.0173+j0.468 MVA
S2
② T3变压器损耗: ΔST3
5.62+4.42
9.831+j158.813 =RT3+XT3=UN
= 0.0412+j0.666 MVA
③ 100Km与70Km线路交点4 末端功率损耗
′
S4= ST4+ SLD4+ΔSo
S2
= 0.0173+10.2+0.0232
+j 0.468+6.2+0.352 MVA= 10.2405+7.02 MVA
④ 120Km与100Km线路交点3末端功率损耗 S3= ST3+ SLD3+ΔS0
= 0.0412+0.00976+5.6
+j 0.666+0.088+4.4 MVA= 5.651+j5.154 MVA
⑤ 1.4间100Km线路损耗 SLD14
77
10.2405+j7.02 = 4.217+j2.891 MVA =S=
4B22
jUN= 4.217+j1.197 MVA
SLD14′=SLD14