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matlab simulink 电网扫频仿真和分析
2022-06-29 06:39:00 【studyer_domi】
1、内容简介
略
375-可以交流、咨询、答疑
2、内容说明
略
3、仿真分析
clc
close all
clear
tic
fre_ini = 1 ; % 初始频率
fre_end = 100; % 最终频率
fre_sample = 1/fre_end/8; % 仿真采样频率
time = fre_end; % 频率从初始频率扫频到最终频率的时间/s
U = 220;% 输入电压幅值
R = 0.0525;
L = 0.415/(2*pi*50);
C = 72e-6/(2*pi*50);
G = 0;
if G==0
sim('saopin0.slx')
else
sim('saopin.slx')
end
t = 0:fre_sample:tout(end);
Is_out = interp1(tout,yout(:,2),t);
Vs_out = interp1(tout,yout(:,3),t);
figure
plot(t,Is_out)
xlabel 时间/s
ylabel 电流/I
figure
plot(t,Vs_out)
xlabel 时间/s
ylabel 电压/V
[~,Is0,phase_I]=change_fft(1/fre_sample,Is_out); % 调用傅里叶变换
[f,Vs0,phase_V]=change_fft(1/fre_sample,Vs_out);
figure
plot(f,Is0)
xlabel 频率/Hz
ylabel 电流幅值
figure
plot(f,Vs0)
xlabel 频率/Hz
ylabel 电压幅值
% Z_abs = Vs0./Is0;
% Z_phase = phase_V-phase_I;
% figure
% plot(f,Z_abs)
% xlabel 频率/Hz
% ylabel 阻抗幅值/ohm
% figure
% plot(f,Z_phase)
% xlabel 频率/Hz
% ylabel 阻抗相位/°
R_z = Vs0./(eps+Is0);
[f_R,R_f,phase_R_f]=change_fft(1/fre_sample,R_z);
figure
plot(f_R,R_f)
xlabel 频率/Hz
ylabel 阻抗幅值/ohm
figure
plot(f_R,phase_R_f)
xlabel 频率/Hz
ylabel 阻抗相位/°
toc


4、参考论文
非破坏性射频波谱法在城区10kV配网电缆检测中的应用讨论_杨永谦
基于频域谐振阻抗的中高压电缆老化分析_钱永亮
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