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diff --git a/3472/CH17/EX17.12/Example17_12.sce b/3472/CH17/EX17.12/Example17_12.sce new file mode 100644 index 000000000..fac566d53 --- /dev/null +++ b/3472/CH17/EX17.12/Example17_12.sce @@ -0,0 +1,34 @@ +// 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 : 10.12 :
+// Page number 303-304
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+f = 50.0 // Frequency(Hz)
+P = 4.0 // Number of poles
+G = 20.0 // Rating of generator(MVA)
+H = 9.0 // Inertia constant(kWsec/MVA)
+P_m = 26800.0 // Rotational loss(hp)
+P_e = 16000.0 // Electric power developed(kW)
+
+// Calculations
+GH = G*H // Energy stored in rotor at synchronous speed(MJ)
+P_m_kW = P_m*0.746 // Rotational loss(kW)
+P_a = P_m_kW-P_e // Acceleration power(kW)
+P_a1 = P_a/1000.0 // Acceleration power(MW)
+M = GH/(180*f) // Angular momentum
+acceleration = P_a1/M // Acceleration(°/sec^2)
+acceleration_1 = acceleration*%pi/180.0 // Acceleration(rad/sec^2)
+
+// Results
+disp("PART II - EXAMPLE : 10.12 : SOLUTION :-")
+printf("\nKinetic energy stored in the rotor at synchronous speed, GH = %.f MJ", GH)
+printf("\nAcceleration = %.f°/sec^2 = %.2f rad/sec^2 \n", acceleration,acceleration_1)
+printf("\nNOTE: ERROR: H = 9 kW-sec/MVA, not 9 kW-sec/kVA as mentioned in the textbook statement")
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