湖北民族学院信息工程学院实验报告

班级：0312406 姓名：王愿喜 学号：031240612成绩： 实验时间：2015年4月 日 节 实验地点：实验楼

课程名称：电力系统分析 实验类型：设计型□ 验证型□ 综合型□

实验题目：MATLAB 在电力系统中的应用实例 实验仪器： matlab

一、实验目的

熟悉matlab在电力系统潮流计算中的应用，加深对潮流计算的了解，学会自己使用matlab进行对电力系统的计算。

二、实验原理、原理图及电路图

以书中11-5为例，用m文件编写其支路、节点、发电机和基准容量的矩阵，然后运用快速解耦法解电力系统时用runpf 函数名函数即可。

三、实验步骤及内容

首先编写11-5题中支路、节点、发电机和基准容量的参数矩阵，如下图所示； function mpc = case181181 mpc.version='2'; mpc.baseMVA = 100; mpc.bus=[

k 1 300 180 0 0 1 1 0 100 1 1.1 0.94; 2 1 550 130 0 0 1 1 0 100 1 1.1 0.94; 3 2 500 0 0 0 1 1.10 0 100 1 1.1 0.94; 4 3 0 0 0 0 1 1.05 0 100 1 1.1 0.94; ];

mpc.gen=[

3 500 0 9990 -9999 1.10 100 1 600 0; 4 0 0 9990 -9999 1.05 100 1 600 0; ];

mpc.branch=[

2 1 0.10 0.40 0.03056 0 0 0 0 0 1 -360 360; 3 1 0.3 0 0 0 0 0 1.10 0 1 -360 360; 4 2 0.08 0.40 0.0384 0 0 0 0 0 1 -360 360; 4 1 0.12 0.50 0.02826 0 0 0 0 0 1 -360 360; ]; return;

四、实验结果记录与分析

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>> runpf case181181

Newton's method power did not converge in 10 iterations.

Did not converge (0.22 seconds)

================================================================================

| System Summary | ================================================================================

How many? How much? P (MW) Q (MVAr) --------------------- ------------------- ------------- -----------------

Buses 4 Total Gen Capacity 1200.0 -19998.0 to 19980.0 Generators 2 On-line Capacity 1200.0 -19998.0 to 19980.0 Committed Gens 2 Generation (actual) 1675.2 738.4 Loads 3 Load 1350.0 310.0 Fixed 3 Fixed 1350.0 310.0 Dispatchable 0 Dispatchable -0.0 of -0.0 -0.0 Shunts 0 Shunt (inj) -0.0 0.0 Branches 4 Losses (I^2 * Z) 1102.94 4482.62 Transformers 1 Branch Charging (inj) - 42.3 Inter-ties 0 Total Inter-tie Flow 0.0 0.0 Areas 1

Minimum Maximum ------------------------- --------------------------------

Voltage Magnitude 1.050 p.u. @ bus 4 2.977 p.u. @ bus 2 Voltage Angle -121.58 deg @ bus 3 0.00 deg @ bus 4 P Losses (I^2*R) - 598.33 MW @ line 4-2 Q Losses (I^2*X) - 2991.63 MVAr @ line 4-2

================================================================================

| Bus Data | ================================================================================

Bus Voltage Generation Load # Mag(pu) Ang(deg) P (MW) Q (MVAr) P (MW) Q (MVAr) ----- ------- -------- -------- -------- -------- --------

1 1.653 -120.628 - - 300.00 180.00 2 2.977 -113.355 - - 550.00 130.00 3 1.100 -121.579 500.00 9.15 500.00 0.00

2

4 1.050 0.000 1175.17 729.22 - - -------- -------- -------- --------

Total: 1675.17 738.37 1350.00 310.00

================================================================================

| Branch Data | ================================================================================

Brnch From To From Bus Injection To Bus Injection Loss (I^2 * Z)

# Bus Bus P (MW) Q (MVAr) P (MW) Q (MVAr) P (MW) (MVAr)

----- ----- ----- -------- -------- -------- -------- -------- --------

…… 此处隐藏702字 ……

Machine: G2

Nominal: 100 MVA 10.5 kV rms Bus Type: Swing bus Uan phase: 0.00°

Uab: 11025 Vrms [1.05 pu] 30.00° Ubc: 11025 Vrms [1.05 pu] -90.00° Uca: 11025 Vrms [1.05 pu] 150.00° Ia: 14443 Arms [2.627 pu] -28.65° Ib: 14443 Arms [2.627 pu] -148.65° Ic: 14443 Arms [2.627 pu] 91.35° P: 2.4203e+008 W [2.42 pu] Q: 1.3225e+008 Vars [1.323 pu] Pmec: 2.44e+008 W [2.44 pu]

Torque: 1.5534e+007 N.m [2.44 pu] Vf: 3.9054 pu

Machine: G1

Nominal: 1000 kVA 10.5 kV rms Bus Type: P & V generator Uan phase: 3.22°

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