diff options
| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3472/CH7/EX7.17/Example7_17.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 '3472/CH7/EX7.17/Example7_17.sce')
| -rw-r--r-- | 3472/CH7/EX7.17/Example7_17.sce | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/3472/CH7/EX7.17/Example7_17.sce b/3472/CH7/EX7.17/Example7_17.sce new file mode 100644 index 000000000..b6595d582 --- /dev/null +++ b/3472/CH7/EX7.17/Example7_17.sce @@ -0,0 +1,39 @@ +// A Texbook on POWER SYSTEM ENGINEERING
+// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
+// DHANPAT RAI & Co.
+// SECOND EDITION
+
+// PART I : GENERATION
+// CHAPTER 7: TARIFFS AND ECONOMIC ASPECTS IN POWER GENERATION
+
+// EXAMPLE : 7.17 :
+// Page number 79
+clear ; clc ; close ; // Clear the work space and console
+
+// Given data
+kVA_tariff_hv = 60.0 // HV supply per kVA per annum(Rs)
+kWh_tariff_hv = 3.0/100 // HV supply per kWh annum(Rs)
+kVA_tariff_lv = 65.0 // LV supply per kVA per annum(Rs)
+kWh_tariff_lv = 3.3/100 // LV supply per kWh annum(Rs)
+cost_equip_kVA = 50.0 // Cost of transformers and switchgear per kVA(Rs)
+loss_full_load = 0.02 // Full load transformation loss
+fixed_charge_per = 0.2 // Fixed charges per annum
+no_week = 50.0 // Number of working weeks in a year
+
+// Calculations
+rating_equip = 1000/(1-loss_full_load) // Rating of transformer and switchgear(kVA)
+cost_equip = cost_equip_kVA*rating_equip // Cost of transformers and switchgear(Rs)
+fixed_charge = fixed_charge_per*cost_equip // Fixed charges per annum on HV plant(Rs)
+X = poly(0,"X") // Number of working hours per week
+units_consumed = (no_week*X)*1000.0 // Yearly units consumed by load
+total_units = units_consumed/(1-loss_full_load) // Total units to be paid on HV supply
+// Case(a)
+annual_cost_hv = (kVA_tariff_hv*rating_equip)+(kWh_tariff_hv*cost_equip*X)+fixed_charge // Annual cost(Rs)
+// Case(b)
+annual_cost_lv = (kVA_tariff_lv*1000.0)+(kWh_tariff_lv*units_consumed) // Annual cost(Rs)
+p = annual_cost_hv-annual_cost_lv // Finding unknown value i.e working hours in terms of X
+x = roots(p) // Finding unknown value i.e working hours
+
+// Results
+disp("PART I - EXAMPLE : 7.17 : SOLUTION :-")
+printf("\nAbove %.1f working hours per week the H.V supply is cheaper ", x)
|