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author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
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committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3472/CH17/EX17.13/Example17_13.sce | |
parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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diff --git a/3472/CH17/EX17.13/Example17_13.sce b/3472/CH17/EX17.13/Example17_13.sce new file mode 100644 index 000000000..2f4d7576e --- /dev/null +++ b/3472/CH17/EX17.13/Example17_13.sce @@ -0,0 +1,32 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART II : TRANSMISSION AND DISTRIBUTION
+// CHAPTER 10: POWER SYSTEM STABILITY
+
+// EXAMPLE : 10.13 :
+// Page number 304
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+f = 50.0 // Frequency(Hz)
+P = 4.0 // Number of poles
+alpha = 200.0 // Acceleration(°/sec^2)
+alpha_rad = 3.49 // Acceleration(rad/sec^2)
+n = 10.0 // Number of cycle
+
+// Calculations
+t = 1/f*n // Time(sec)
+delta_rel = ((alpha_rad*2)**0.5*0.5)**2 // Relation of change in rotor angle with time(rad)
+delta = delta_rel*t**2 // Change in torque angle(rad)
+delta_deg = delta*180/%pi // Change in torque angle in that period(°)
+rpm_rad = (alpha_rad*2*delta)**0.5 // r.p.m(rad/sec)
+rpm = rpm_rad*60.0/(%pi*P) // r.p.m
+speed_rotor = (120*f/P)+rpm // Rotor speed at the end of 10 cycles(r.p.m)
+
+// Results
+disp("PART II - EXAMPLE : 10.13 : SOLUTION :-")
+printf("\nChange in torque angle in that period, δ = %.4f rad = %.f elect degree", delta,delta_deg)
+printf("\nRotor speed at the end of 10 cycles = %.2f r.p.m", speed_rotor)
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