电力系统暂态上机计算课程报告Word格式.docx

资源描述

电力系统暂态上机计算课程报告Word格式.docx

《电力系统暂态上机计算课程报告Word格式.docx》由会员分享，可在线阅读，更多相关《电力系统暂态上机计算课程报告Word格式.docx（30页珍藏版）》请在冰豆网上搜索。

电力系统暂态上机计算课程报告Word格式.docx

●过程流程图

●计算结果节点导纳矩阵

图1Y1、Y2的计算结果

图2Y0的计算结果

图3YY1、YY2的结算结果

（2）节点3发生三相短路故障

a、故障点三序电流、三相电流：

I1=0-9.8592iI2=0I0=0;

Ia=0-9.8592iIb=-8.5383+4.9296iIc=8.5383+4.9296i

b.各节点三序电压、三相电压：

节点

0.4507

-0.2254-0.3903i

-0.2254+0.3903i

0.5352

-0.2676-0.4635i

-0.2676+0.4635i

0.6338

0.5489+0.3169i

0.0000-0.6338i

-0.5489+0.3169i

0.6091

0.5977+0.3451i

0.0000-0.6901i

-0.5977+0.3451i

c.各支路三序电流、三相电流：

支路

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-

2-5

0+6.1972i

5.3669-

3.0968i

-5.3669-

发电机1

-1.8310+3.1714i

3.6620

-1.8310-3.1714i

发电机23

-3.0986+5.3669i

6.1972-0.0000i

-3.0986-5.3669i

2、不对称短路计算的流程图及计算结果

●流程图

●计算结果

（1）节点3发生A相短路接地故障

a.故障点三序电流、三相电流：

I1=0-3.1080iI2=0-3.1080iI0=0-3.1080i;

Ia=0-9.3241iIb=0-0.0000iIc=0-0.0000i

b.各节点三序电压、三相电压：

0.8268

-0.1732

-0.0715

0.5822

-0.3983-0.8660i

-0.3983+0.8660i

0.8535

-0.1465

-0.0459

0.6610

-0.3994-0.8660i

-0.3994+0.8660i

0.6848

-0.3152

-0.3695

0.0000

-0.5543-0.8660i

-0.5543+0.8660i

0.8846

-0.1154

0.6661+0.5000i

0.0000-1.0000i

-0.6661+0.5000i

0.9023

-0.0977

0.6968+0.5000i

-0.6968+0.5000i

c.各支路三序电流、三相电流：

0+0.2664i

0+0.1280i

0+0.6608i

0-0.1384i

0-1.4208i

0-1.4900i

0-4.3517i

0.0000-0.0692i

-0.0000-0.0692i

0-1.6872i

0-1.6180i

0-4.9924i

0.0000+0.0692i

-0.0000+0.0692i

0+1.1544i

0+1.3621i

0+3.6709i

0.0000+0.2077i

-0.0000+0.2077i

0+1.9536i

0+1.7459i

0+5.6532i

0.0000-0.2077i

-0.0000-0.2077i

-0.5772+0.9997i

0.5772+0.9997i

-0.0000+1.9995i

0.0000-0.0000i

-0.0000-1.9995i

-0.9768+1.6919i

0.9768+1.6919i

-0.0000+3.3838i

-0.0000-3.3838i

（2）节点3发生A相经10Ω电阻接地故障

I1=1.1152-2.6363iI2=1.1152-2.6363iI0=1.1152-2.6363i;

Ia=3.3456-7.9088iIb=0Ic=0

0.8531-0.0621i

-0.1469-0.0621i

-0.0607-0.0257i

0.6456-0.1499i

-0.4138-0.8296i

-0.4138+0.9025i

0.8757-0.0526i

-0.1243-0.0526i

-0.0389-0.0165i

0.7125-0.1216i

-0.4147-0.8299i

-0.4147+0.9021i

0.7326-0.1131i

-0.2674-0.1131i

-0.3134-0.1326i

0.1518-0.3588i

-0.5460-0.8855i

-0.5460+0.8466i

0.9021-0.0414i

-0.0979-0.0414i

0.6964+0.4283i

-0.6964+0.5717i

0.9171-0.0350i

-0.0829-0.0350i

0.7225+0.4393i

-0.7225+0.5607i

-0.0956+0.2260i

-0.0459+0.1085i

-0.2371+0.5605i

0.0497-0.1174i

0.0497-0.1174ii

0.5098-1.2052i

0.5346-1.2639i

1.5542-3.6742i

0.0248-0.0587i

0.6054-1.4311i

0.5806-1.3724i

1.7913-4.2346i

-0.0248+0.0587i

-0.4142+0.9792i

-0.4887+1.1553i

-1.3172+3.1137i

-0.0745+0.1761i

-0.7010+1.6571i

-0.6265+1.4809i

-2.0284+4.7951i

0.0745-0.1761i

-0.8483+0.6409i

0.1309+1.0551i

-0.7174+1.6960i

0.7174-1.6960i

-1.4356+1.0846i

0.2215+1.7856i

-1.2141+2.8702i

-0.0000-0.0000i

1.2141-2.8702i

（3）节点3发生b、c两相短路故障

I1=0-4.9296iI2=0+4.9296iI0=0;

Ia=0Ib=-8.6078-0.0000iIc=8.6078+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

0.8169

0.1831

0.8660+0.3169i

-0.8660+0.3169i

0.8451

0.1549

0.8660+0.3451i

-0.8660+0.3451i

0+0.4225i

0-0.4225i

0.7319

-0.7319

0-2.2535i

0+2.2535i

-3.9032

3.9032

0-2.6761i

0+2.6761i

-4.6351

4.6351

0+1.8310i

0+-1.8310i

3.1714

0+3.0986i

0-3.0986i

5.3669

-5.3669

-0.9155+1.5857i

-0.9155-1.5857i

-1.8310

发电机2、3

-1.5493+2.6835i

-1.5493-2.6835i

-3.0986

6.1972

（4）节点3发生b、c两相短路接地故障

I1=0-6.4036iI2=0+3.4556iI0=0+2.9480i;

Ia=0Ib=-8.5383+4.4220iIc=8.5383+4.4220i

0.6432

0.1925

0.0678

0.9036

-0.3500-0.3903i

-0.3500+0.3903i

0.6981

0.1629

0.0436

0.9046

-0.3870-0.4635i

-0.3870+0.4635i

0.3505

1.0515

0.7622

0.1283

0.7712+0.3169i

-0.7712+0.3169i

0.7987

0.1086

0.7858+0.3451i

-0.7858+0.3451i

0+0.5489i

0-0.2962i

0-0.1214i

0+0.1304i

0.7319-0.2477i

-0.7319-0.2477i

0-2.9274i

0+1.5797i

0+1.4133i

0+0.0657i

-3.9032+2.0872i

3.9032+2.0872i

0-3.4762i

0+1.8759i

0+1.5347i

0-0.0657i

-4.6351+2.3349i

4.6351+2.3349i

0+2.3785i

0-1.2835i

0-1.2920i

0-0.1970i

3.1714-1.8394i

-3.1714-1.8394i

0+4.0251i

0-2.1721i

0-1.6561i

0+0.1970i

5.3669-2.5826i

-5.3669-2.5826i

-1.1892+2.0598i

-0.6417-1.1115i

-1.8310+0.9483i

3.6620

-1.8310-0.9483i

-2.0126+3.4858i

-1.0860-1.8811i

-3.0986+1.6048i

6.1972+0.0000i

-3.0986-1.6048i

3．静态稳定性计算过程流程图和计算结果

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

Ke=4.900000,delta=55,P=1.120353

Ke=5.000000,delta=54,P=1.100930

Ke=5.100000,delta=53,P=1.081340

Ke=5.200000,delta=52,P=1.061599

Ke=5.300000,delta=51,P=1.041718

Ke=5.400000,delta=51,P=1.041792

Ke=5.500000,delta=50,P=1.021746

Ke=5.600000,delta=49,P=1.001589

因此，Ke=2.1时，P最大，静态稳定性最好

4、暂态稳定性计算过程流程图和计算结果

0.15s切除故障时的摇摆曲线0.25s切除故障时的摇摆曲线

0.15s切除故障时，系统为暂态稳定，最大切此时系统出现失稳现象

除时间大约为0.2s。

a.计算短路电流，书中给出的手算方法与计算机编程方法有何区别？

答：

手算短路电流时，要将用各序等值电抗表示的复杂网络简化为一个电抗值，并根据边界条件计算出三序网络的关系做出复合序网图，然后计算出正负零各序电流，之后转化为abc三相短路电流。

而用计算机时可以不用简化网络,求出各序导纳矩阵后利用I=YU来计算

展开阅读全文

电力系统暂态上机 计算课程报告Word格式.docx

电力系统暂态上机计算课程报告Word格式.docx