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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 /3472/CH33/EX33.2/Example33_2.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
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| -rw-r--r-- | 3472/CH33/EX33.2/Example33_2.sce | 27 |
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diff --git a/3472/CH33/EX33.2/Example33_2.sce b/3472/CH33/EX33.2/Example33_2.sce new file mode 100644 index 000000000..6ba042a37 --- /dev/null +++ b/3472/CH33/EX33.2/Example33_2.sce @@ -0,0 +1,27 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART III : SWITCHGEAR AND PROTECTION
+// CHAPTER 7: PROTECTIVE RELAYS
+
+// EXAMPLE : 7.2 :
+// Page number 596
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+ratio = 525.0/1 // CT ratio
+CT_sec = 1.0 // Secondary turn
+t_mult = 0.3 // Time multiplier setting
+I_f = 5250.0 // Fault current(A)
+
+// Calculations
+I_sec_fault = I_f/ratio // Secondary fault current(A)
+PSM = I_sec_fault/(1.25*CT_sec) // Plug setting multiplier
+t = 3.15 // Time against this PSM(sec). From graph E7.1 in textbook page no 595
+time_oper = t*t_mult // Operating time(sec)
+
+// Results
+disp("PART III - EXAMPLE : 7.2 : SOLUTION :-")
+printf("\nTime of operation of the relay = %.3f sec", time_oper)
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