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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3872/CH10/EX10.4/EX10_4.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
| download | Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.gz Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.tar.bz2 Scilab-TBC-Uploads-7f60ea012dd2524dae921a2a35adbf7ef21f2bb6.zip | |
initial commit / add all books
Diffstat (limited to '3872/CH10/EX10.4/EX10_4.sce')
| -rw-r--r-- | 3872/CH10/EX10.4/EX10_4.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/3872/CH10/EX10.4/EX10_4.sce b/3872/CH10/EX10.4/EX10_4.sce new file mode 100644 index 000000000..175e0af78 --- /dev/null +++ b/3872/CH10/EX10.4/EX10_4.sce @@ -0,0 +1,31 @@ +//Book - Power System: Analysis & Design 5th Edition
+//Authors - J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye
+//Chapter - 10 ; Example 10.4
+//Scilab Version - 6.0.0 ; OS - Windows
+clc;
+clear;
+S_Ifmax_CTratio=[11 3000 400/5;4 2000 200/5;6 100 200/5]; //Apparent power in MVA , maximum fault current in Amperes and CT ratio
+V=34.5; //RMS line to line voltage in kVolts
+Tbreaker=0.083; //Operating time of breaker for 5 cycles in Second
+Tcoordination=0.3; //Co-ordination time of the breaker in Seconds
+Il3=S_Ifmax_CTratio(3,1)*10^(3)/(V*sqrt(3)*S_Ifmax_CTratio(3,3)); //Maximum secondary current of breaker 3 in Ampere
+Ts3=3; //From figure 10.12 the Tap Setting
+Il2=(S_Ifmax_CTratio(2,1)+S_Ifmax_CTratio(3,1))*10^(3)/(V*sqrt(3)*S_Ifmax_CTratio(2,3));//Maximum secondary current of breaker 2 in Ampere
+Ts2=5; //From figure 10.12 the Tap Setting
+Il1=(S_Ifmax_CTratio(1,1)+S_Ifmax_CTratio(2,1)+S_Ifmax_CTratio(3,1))*10^(3)/(V*sqrt(3)*S_Ifmax_CTratio(1,3));//Maximum secondary current of breaker 1 in Ampere
+Ts1=5; //From figure 10.12 the Tap Setting
+Fault_pickupcrnt3=S_Ifmax_CTratio(2,2)/(Ts3*S_Ifmax_CTratio(3,3)); //The fault-to-pickup current ratio at Breaker 3
+t3=0.05; //Relay operating time from figure 10.12 in Seconds
+tds3=0.5; //Time-dial settings from figure 10.12
+Fault_pickupcrnt2=S_Ifmax_CTratio(2,2)/(Ts2*S_Ifmax_CTratio(2,3)); //The fault-to-pickup current ratio at Breaker 2
+t2=t3+Tbreaker+Tcoordination;
+tds2=2; //Time-dial settings from figure 10.12
+Fault_pickupcrnt2=S_Ifmax_CTratio(1,2)/(Ts2*S_Ifmax_CTratio(2,3)); //The fault-to-pickup current ratio at Breaker 1
+t2=0.38; //Relay operating time from figure 10.12 in Seconds
+tds1=3; //Time-dial settings from figure 10.12
+Fault_pickupcrnt1=S_Ifmax_CTratio(1,2)/(Ts2*S_Ifmax_CTratio(1,3));
+t1=t2+Tbreaker+Tcoordination;
+printf('\nBreaker\tTS\tTDS');
+printf('\nB1\t%d\t%0.1f',Ts1,tds1);
+printf('\nB2\t%d\t%0.1f',Ts2,tds2);
+printf('\nB3\t%d\t%0.1f',Ts3,tds3);
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