学位论文电力系统暂态上机计算Word格式.docx
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学位论文电力系统暂态上机计算Word格式.docx
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计算教材《电力系统分析基础》P182例(7-3)。
要求程序根据支路阻抗自动形成节点导纳阵(导纳阵的形成参照潮流程序),用节点导纳阵求逆得到节点阻抗矩阵。
计算三相短路后故障点三序电流、三相电流;
各节点三序电压、三相电压;
各支路三序电流、三相电流。
(没有负序和零序)
(1)不考虑发电机节点的三序节点导纳矩阵
Y1=Y2=
Y0=
(2)考虑发电机节点的正负序导纳矩阵
YY1=YY2=
(3)三序节点阻抗矩阵
Z1=Z2=
Z0=
(4)节点3发生三相短路
●故障点三序电流:
I1=0-9.8592i
I2=0
I3=0;
三相电流:
Ia=0-9.8592i;
Ib=-8.5383+4.9296i;
Ic=8.5383+4.9296i;
●各节点三序电压、三相电压
节点
U1
U2
U0
Ua
Ub
Uc
1
0.4507
0.0000
-0.2254-0.3903i
-0.2254+0.3903i
2
0.5352
-0.2676-0.4635i
-0.2676+0.4635i
3
4
0.6338
0.5489+0.3169i
0.0000-0.6338i
-0.5489+0.3169i
5
0.6901
0.5977+0.3451i
0.0000-0.6901i
-0.5977+0.3451i
●各支路三序电流、三相电流:
支路
I1
I2
I0
Ia
Ib
Ic
1-2
0+0.8451i
0.7319-0.4225i
-0.7319-0.4225i
1-3
0-4.5070i
-3.9032+2.2535i
3.9032+2.2535i
2-3
0-5.3521i
-4.6351+2.6761i
4.6351+2.6761i
1-4
0+3.6620i
3.1714-1.8310i
-3.1714-1.8310i
2-5
0+6.1972i
5.3669-3.0986i
-5.3669-3.0986i
发电机1
-1.8310+3.1714i
3.6620+0.0000i
-1.8310-3.1714i
发电机23
-3.0986+5.3669i
6.1972+0.0000i
-3.0986-5.3669i
1.2不对称短路计算:
计算教材《电力系统分析基础》P238例(8-2)。
要求程序根据各序网络的支路阻抗自动形成各序网络的节点导纳阵,用节点导纳阵求逆得到节点阻抗矩阵。
计算下列四种故障情况下故障点三序电流、三相电流;
(1)节点3发生A相短路接地故障
(2)节点3发生A相经10Ω电阻接地故障
(3)节点3发生b、c两相短路故障
(4)节点3发生b、c两相短路接地故障
(1)节点3发生A相短路接地故障
●故障点三序电流、三相电流:
I1=0-3.1167iI2=0-3.1167iI3=0-3.1167i;
Ia=0-9.35iIb=0Ic=0
●各节点三序电压、三相电压:
0.8264
-0.1736
-0.0686
0.5841
-0.3949-0.8660i
-0.3949+0.8660i
0.8351
-0.1469
-0.0436
0.6625
-0.3967-0.8660i
-0.3967+0.8660i
0.6839
-0.3161
-0.3678
-0.5516-0.8660i
-0.5516+0.8660i
0.8842
-0.1158
0.6655+0.5000i
0.0000-1.0000i
-0.6655+0.5000i
0.9020
-0.0980
0.6964+0.5000i
-0.6964+0.5000i
0+0.2671i
0+0.1247i
0+0.6589i
0.0000-0.1425i
-0.0000-0.1425i
0-1.4248i
0-1.4960i
0-4.3455i
0.0000-0.0712i
-0.0000-0.0712i
0-1.6919i
0-1.6207i
0-5.0045i
0+0.0712i
0+1.1576i
0+1.3713i
0+3.6866i
0.0000+0.2137i
-0.0000+0.2137i
0+1.9590i
0+1.7453i
0+5.6634i
0.0000-0.2137i
-0.0000-0.2137i
-0.5788+1.0025i
0.5788+1.0025i
-0.0000+2.0050i
0.0000+0.0000i
-0.0000-2.0050i
发电机2
-0.9795+1.6966i
0.9795+1.6966i
-0.0000+3.3923i
-0.0000-3.3923i
I1=1.1205-2.6414iI2=1.1205-2.6414iI3=1.1205-2.6414i;
Ia=3.3614-7.9241Ib=0Ic=0
0.8528-0.0624i
-0.1472-0.0624i
-0.0581-0.0257i
0.6476-0.1495i
-0.4109-0.8283i
-0.4109+0.9038i
0.8755-0.0528i
-0.1245-0.0528i
-0.0370-0.01571i
0.7140-0.1213i
-0.4125-0.8289i
-0.4125+0.9032i
0.7321-0.1136i
-0.2679-0.1136i
-0.3117-0.1322i
0.1525-0.3595i
-0.5438-0.8846i
-0.5438+0.8475i
0.9019-0.0416i
-0.0981-0.0416i
0.6961+0.4279i
-0.6961+0.5721i
0.91701-0.0352i
-0.0830-0.0352i
0.7222+0.4390i
-0.7222+0.5610i
-0.0960+0.2264i
-0.0448+0.1057i
-0.2369+0.5585i
0.0512-0.1207i
0.5122-1.2075i
0.5378-1.2679i
1.5622-3.6828i
0.0256-0.0604i
0.6082-1.4339i
0.5826-1.3735i
1.7991-4.2413i
--0.0256+0.0604i
-0.0256+0.0604i
-0.4162+0.9811i
-0.4930+1.1622i
-1.3253+3.1244i
-0.0768+0.1811i
-0.7043+1.6603i
-0.6275+1.4792i
-2.0360+4.7997i
0.0768-0.1811i
-0.8510+0.6416i
0.1301+1.0577i
-0.7208+1.6993i
0.0000-0.0000i
0.7208-1.6993i
-1.4401+1.0857i
0.2202+1.7900i
0
-1.2199+2.8757i
-0.0000-0.0000i
1.2199-2.8757i
I1=0-4.9296iI2=0+4.9296iI3=0;
Ia=0Ib=-8.5383-0.0000iIc=8.5383+0.0000i
0.7254
0.2746
1.0000
-0.5000-0.3903i
-0.5000+0.3903i
0.7676
0.2324
-0.5000-0.4635i
-0.5000+0.4635i
0.5000
-0.5000-0.0000i
-0.5000+0.0000i
0.8169
0.1831
0.8660+0.3169i
-0.8660+0.3169i
0.8451
0.1549
0.8660+0.3451i
-0.8660+0.3451i
●各支路三序电流、三相电流:
0+0.4225i
0-0.4225i
0+0.0000i
0.7319-0.0000i
-0.7319-0.0000i
0-2.2535i
0+2.2535i
0-0.0000i
-3.9032
3.9032+0.0000i
0-2.6761i
0+2.6761i
-4.6351+0.0000i
4.6351+0.0000i
0+1.8310i
0-1.8310i
3.1714-0.0000i
-3.1714-0.0000i
0+3.0986i
0-3.0986i
5.3669+0.0000i
-5.3669-0.0000i
-0.9155+1.5857i
-0.9155-1.5857i
-1.8310+0.0000i
-1.8310-0.0000i
-1.5493+2.6835i
-1.5493-2.6835i
-3.0986
-3.0986-0.0000i
I1=0-6.4114iI2=0+3.4478iI3=0+2.9636i;
Ia=0Ib=-8.5383+4.4454iIc=8.5383+4.4454i
0.6428
0.1921
0.0652
0.9001
-0.3522-0.3903i
-0.3500+0.3903i
0.6977
0.1625
0.0415
0.9018
-0.3887-0.4635i
-0.3887+0.4635i
0.3496
0.3497
1.0491
0.7619
0.1281
0.7707+0.3169i
-0.7707+0.3169i
0.7985
0.1084
0.7854+0.3451i
-0.7854+0.3451i
0+0.5495i
0-0.2955i
0-0.1185i
0+0.1355i
0.7319-0.2456i
-0.7319-0.2456i
0-2.9309i
0+1.5761i
0+1.4225i
0+0.0677i
-3.9032+2.0999i
3.9032+2.0999i
0-3.4805i
0+1.8717i
0+1.5411i
0-0.0677i
-4.6351+2.3455i
4.6351+2.3455i
0+2.3814i
0-1.2806i
0-1.3040i
0-0.2032i
3.1714-1.8544i
-3.1714-1.8544i
0+4.0300i
0-2.1672i
0-1.6596i
0+0.2032i
5.3669-2.5910i
-5.3669-2.5910i
-1.1907+2.0623i
-0.6403-1.10905i
-1.8310+0.9533i
-1.8310-0.9533i
-2.0150+3.4901i
-1.0860-1.8768i
-3.0986+1.6133i
-3.0986-1.6133i
程序流程图:
2.静态稳定计算
P191例(7-2)中,采用试探法选择放大倍数。
求ke的值取多大时能获得最大的传输功率。
输出结果:
Ke=0.100000,delta=91,P=1.345117
Ke=0.200000,delta=92,P=1.363000
Ke=0.300000,delta=93,P=1.380693
Ke=0.400000,delta=95,P=1.398409
Ke=0.500000,delta=96,P=1.415747
Ke=0.600000,delta=97,P=1.432842
Ke=0.700000,delta=98,P=1.449679
Ke=0.800000,delta=99,P=1.466244
Ke=0.900000,delta=100,P=1.482520
Ke=1.000000,delta=101,P=1.498487
Ke=1.100000,delta=101,P=1.513985
Ke=1.200000,delta=102,P=1.529380
Ke=1.300000,delta=103,P=1.544429
Ke=1.400000,delta=103,P=1.558878
Ke=1.500000,delta=104,P=1.573336
Ke=1.600000,delta=105,P=1.587402
Ke=1.700000,delta=105,P=1.600902
Ke=1.800000,delta=105,P=1.613924
Ke=1.900000,delta=102,P=1.621480
Ke=2.000000,delta=99,P=1.622734
Ke=2.100000,delta=97,P=1.623379
Ke=2.200000,delta=94,P=1.614349
Ke=2.300000,delta=92,P=1.607801
Ke=2.400000,delta=89,P=1.589402
Ke=2.500000,delta=87,P=1.576380
Ke=2.600000,delta=85,P=1.560855
Ke=2.700000,delta=83,P=1.542968
Ke=2.800000,delta=81,P=1.522859
Ke=2.900000,delta=80,P=1.514020
Ke=3.000000,delta=78,P=1.490598
Ke=3.100000,delta=76,P=1.465314
Ke=3.200000,delta=75,P=1.453440
Ke=3.300000,delta=73,P=1.425420
Ke=3.400000,delta=72,P=1.411962
Ke=3.500000,delta=70,P=1.381541
Ke=3.600000,delta=69,P=1.366704
Ke=3.700000,delta=68,P=1.351397
Ke=3.800000,delta=66,P=1.318171
Ke=3.900000,delta=65,P=1.301745
Ke=4.000000,delta=64,P=1.284942
Ke=4.100000,delta=63,P=1.267785
Ke=4.200000,delta=62,P=1.250299
Ke=4.300000,delta=61,P=1.232503
Ke=4.400000,delta=60,P=1.214420
Ke=4.500000,delta=59,P=1.196069
Ke=4.600000,delta=58,P=1.177469
Ke=4.700000,delta=57,P=1.158638
Ke=4.800000,delta=56,P=1.139594
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