电力系统分析实验报告

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? --------------------Buses Generators Committed Gens Loads Fixed Dispatchable Shunts Branches Transformers Inter-ties Areas How much? P (MW) Q (MVAr) ------------------- ------------- ----------------4 Total Gen Capacity 1200.0 -19998.0 to 19980.0 2 On-line Capacity 1200.0 -19998.0 to 19980.0 2 Generation (actual) 1675.2 738.4 3 Load 1350.0 310.0 3 Fixed 1350.0 310.0 0 Dispatchable -0.0 of -0.0 -0.0 0 Shunt (inj) -0.0 0.0 4 Losses (I^2 * Z) 1102.94 4482.62 1 Branch Charging (inj) 42.3 0 Total Inter-tie Flow 0.0 0.0 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
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4 1.050
0.000 Total:
1175.17 729.22 -------- -------- -------- -------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) Q (MVAr) ----- ----- ----- -------- -------- -------- -------- -------- -------1 2 1 380.81 886.53 -273.06 -473.23 107.754 431.02 2 3 1 -217.73 9.15 360.19 -9.15 142.465 0.00 3 4 2 802.49 422.83 -204.16 2549.66 598.325 2991.63 4 4 1 372.68 306.39 -118.29 748.17 254.395 1059.98 -------- -------Total: 1102.939 4482.62
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