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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /380/CH11 | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '380/CH11')
| -rwxr-xr-x | 380/CH11/EX11.7/11_7.txt | 21 | ||||
| -rwxr-xr-x | 380/CH11/EX11.7/11_7_R.txt | 8 | ||||
| -rwxr-xr-x | 380/CH11/EX11.7/Ex11_7.sce | 21 | ||||
| -rwxr-xr-x | 380/CH11/EX11.8/11_8.txt | 21 | ||||
| -rwxr-xr-x | 380/CH11/EX11.8/11_8_R.txt | 7 | ||||
| -rwxr-xr-x | 380/CH11/EX11.8/Ex11_8.sce | 21 |
6 files changed, 99 insertions, 0 deletions
diff --git a/380/CH11/EX11.7/11_7.txt b/380/CH11/EX11.7/11_7.txt new file mode 100755 index 000000000..0471ee59c --- /dev/null +++ b/380/CH11/EX11.7/11_7.txt @@ -0,0 +1,21 @@ +//Caption:Find the rms value of symmetric subtransient and transient currents
+//Exa:11.7
+clc;
+clear;
+close;
+KVA=71500;//Kilo Volt-Ampere
+V_r=13800;//in Volts
+X_af=0.57;//in per unit
+X_la=0.125;//in per unit
+X_lf=0.239;//in per unit
+X_ld=0.172;//in per unit
+X_ds=X_la+((X_af*X_lf*X_ld)/(X_lf*X_ld+X_af*X_ld+X_af*X_lf));//subtransient reactance(in per unit)
+E_phy=1;//generated voltage (in per unit)
+I_ds=E_phy/X_ds;//short circuit current (in per unit)
+X_d=X_la+((X_af*X_lf)/(X_af+X_lf));//transient reactance (in per unit)
+I_d=E_phy/X_d;//transient current (in per unit)
+I_rated=KVA*1000/(sqrt(3)*V_r);//in Amperes
+I_dsa=I_ds*I_rated;//sub transient current (in Amperes)
+disp(I_dsa,'sub-transient current (in Amperes)=');
+I_da=I_d*I_rated;//transient current (in Amperes)
+disp(I_da,'transient current (in Amperes)=');
\ No newline at end of file diff --git a/380/CH11/EX11.7/11_7_R.txt b/380/CH11/EX11.7/11_7_R.txt new file mode 100755 index 000000000..185da1e24 --- /dev/null +++ b/380/CH11/EX11.7/11_7_R.txt @@ -0,0 +1,8 @@ + sub-transient current (in Amperes)=
+
+ 14238.479
+
+ transient current (in Amperes)=
+
+ 10195.686
+
\ No newline at end of file diff --git a/380/CH11/EX11.7/Ex11_7.sce b/380/CH11/EX11.7/Ex11_7.sce new file mode 100755 index 000000000..0471ee59c --- /dev/null +++ b/380/CH11/EX11.7/Ex11_7.sce @@ -0,0 +1,21 @@ +//Caption:Find the rms value of symmetric subtransient and transient currents
+//Exa:11.7
+clc;
+clear;
+close;
+KVA=71500;//Kilo Volt-Ampere
+V_r=13800;//in Volts
+X_af=0.57;//in per unit
+X_la=0.125;//in per unit
+X_lf=0.239;//in per unit
+X_ld=0.172;//in per unit
+X_ds=X_la+((X_af*X_lf*X_ld)/(X_lf*X_ld+X_af*X_ld+X_af*X_lf));//subtransient reactance(in per unit)
+E_phy=1;//generated voltage (in per unit)
+I_ds=E_phy/X_ds;//short circuit current (in per unit)
+X_d=X_la+((X_af*X_lf)/(X_af+X_lf));//transient reactance (in per unit)
+I_d=E_phy/X_d;//transient current (in per unit)
+I_rated=KVA*1000/(sqrt(3)*V_r);//in Amperes
+I_dsa=I_ds*I_rated;//sub transient current (in Amperes)
+disp(I_dsa,'sub-transient current (in Amperes)=');
+I_da=I_d*I_rated;//transient current (in Amperes)
+disp(I_da,'transient current (in Amperes)=');
\ No newline at end of file diff --git a/380/CH11/EX11.8/11_8.txt b/380/CH11/EX11.8/11_8.txt new file mode 100755 index 000000000..5cd8b9cf9 --- /dev/null +++ b/380/CH11/EX11.8/11_8.txt @@ -0,0 +1,21 @@ +//Caption:Find (a)per unit power (b)critical fault clearing time
+//Exa:11.8
+clc;
+clear;
+close;
+f=60;//in Hertzs
+P=4;//no. of poles
+P_m=0.9;
+H=10;//in Joule/Volt-Amperee
+N_s=f*120/P;//synchronous speed in (rpm)
+w_s=2*%pi*N_s/f;//(in rad/sec)
+P_dm=P_m/sind(18);
+t_c=P/f;//fault clearing time (in sec)
+delta_o=18*2*%pi/360;//in rad
+delta_m=delta_o+((w_s/(P*H))*P_m*t_c^2);
+P_d=P_dm*sin(delta_m);
+disp(P_d,'(a) power generated (in per unit)=');
+delta_2=%pi-delta_o;
+delta_c=acos(((P_m/P_dm)*(delta_2-delta_o))+cos(delta_2));
+t_cn=sqrt((delta_c-delta_o)*4*H/(w_s*P_m));
+disp(t_cn,'(b) critical fault clearing time (in sec)=');
\ No newline at end of file diff --git a/380/CH11/EX11.8/11_8_R.txt b/380/CH11/EX11.8/11_8_R.txt new file mode 100755 index 000000000..c7b9f17c5 --- /dev/null +++ b/380/CH11/EX11.8/11_8_R.txt @@ -0,0 +1,7 @@ + (a) power generated (in per unit)=
+
+ 0.9520487
+
+ (b) critical fault clearing time (in sec)=
+
+ 0.5810606
\ No newline at end of file diff --git a/380/CH11/EX11.8/Ex11_8.sce b/380/CH11/EX11.8/Ex11_8.sce new file mode 100755 index 000000000..5cd8b9cf9 --- /dev/null +++ b/380/CH11/EX11.8/Ex11_8.sce @@ -0,0 +1,21 @@ +//Caption:Find (a)per unit power (b)critical fault clearing time
+//Exa:11.8
+clc;
+clear;
+close;
+f=60;//in Hertzs
+P=4;//no. of poles
+P_m=0.9;
+H=10;//in Joule/Volt-Amperee
+N_s=f*120/P;//synchronous speed in (rpm)
+w_s=2*%pi*N_s/f;//(in rad/sec)
+P_dm=P_m/sind(18);
+t_c=P/f;//fault clearing time (in sec)
+delta_o=18*2*%pi/360;//in rad
+delta_m=delta_o+((w_s/(P*H))*P_m*t_c^2);
+P_d=P_dm*sin(delta_m);
+disp(P_d,'(a) power generated (in per unit)=');
+delta_2=%pi-delta_o;
+delta_c=acos(((P_m/P_dm)*(delta_2-delta_o))+cos(delta_2));
+t_cn=sqrt((delta_c-delta_o)*4*H/(w_s*P_m));
+disp(t_cn,'(b) critical fault clearing time (in sec)=');
\ No newline at end of file |