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"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"CHAPTER 1 - Introduction "
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 1.1 - PG NO.5"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Chapter 1\n",
"#Example 1.1\n",
"#page 5\n",
"import math\n",
"fl=760#\n",
"pf=0.8#\n",
"lsg=0.05#\n",
"csg=60.#\n",
"depre=0.12#\n",
"hpw=48.#\n",
"lv=32.#\n",
"hv=30.#\n",
"pkwhr=0.10#\n",
"\n",
"md=fl/pf#\n",
"print'%s %.1f %s' %('Maximum Demand =',md,' kVA \\n\\n')#\n",
"\n",
"#calculation for tariff (b)\n",
"\n",
"print'%s %.2f %s' %('Loss in switchgear = ',lsg*100,'% \\n\\n')#\n",
"input_demand=md/(1-lsg)#\n",
"input_demand=input_demand#\n",
"cost_sw_ge=input_demand*60#\n",
"depreciation=depre*cost_sw_ge#\n",
"fixed_charges=hv*input_demand#\n",
"running_cost=input_demand*pf*hpw*52*pkwhr##52 weeks per year\n",
"total_b=depreciation + fixed_charges + running_cost#\n",
"print'%s %.1f %s' %('Input Demand= ',input_demand,'kVA \\n\\n')#\n",
"print'%s %d %s' %('Cost of switchgear= Rs ',cost_sw_ge,'\\n\\n')#\n",
"print'%s %d %s' %('Annual charges on depreciation= Rs ',depreciation,'\\n\\n')#\n",
"print'%s %d %s' %('Annual fixed charges due to maximum demand corresponding to triff(b)= Rs',fixed_charges,'\\n\\n')#\n",
"print'%s %d %s' %('Annual running cost due to kWh consumed= Rs ',running_cost,'\\n\\n')#\n",
"print'%s %d %s' %('Total charges/annum for tariff(b) = Rs ',total_b,'\\n\\n')\n",
"\n",
"#calculation for tariff (a)\n",
"input_demand=md#\n",
"input_demand=input_demand#\n",
"fixed_charges=lv*input_demand#\n",
"running_cost=input_demand*pf*hpw*52*pkwhr#\n",
"total_a=fixed_charges + running_cost#\n",
"print'%s %d %s' %('maximum demand corresponding to tariff(a) =',input_demand,' kVA \\n\\n')#\n",
"print'%s %d %s' %('Annual fixed charges= Rs ',fixed_charges,'\\n\\n')#\n",
"print'%s %d %s' %('Annual running charges for kWh consumed = Rs ',running_cost,'\\n\\n')#\n",
"print'%s %d %s' %('Total charges/annum for tariff(a) = Rs ',total_a,'\\n\\n')#\n",
"if(total_a > total_b):\n",
" print('Therefore, tariff(b) is economical\\n\\n\\n')#\n",
"else:\n",
" print('Therefore, tariff(a) is economical\\n\\n\\n')#\n",
" "
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum Demand = 950.0 kVA \n",
"\n",
"\n",
"Loss in switchgear = 5.00 % \n",
"\n",
"\n",
"Input Demand= 1000.0 kVA \n",
"\n",
"\n",
"Cost of switchgear= Rs 60000 \n",
"\n",
"\n",
"Annual charges on depreciation= Rs 7200 \n",
"\n",
"\n",
"Annual fixed charges due to maximum demand corresponding to triff(b)= Rs 30000 \n",
"\n",
"\n",
"Annual running cost due to kWh consumed= Rs 199680 \n",
"\n",
"\n",
"Total charges/annum for tariff(b) = Rs 236880 \n",
"\n",
"\n",
"maximum demand corresponding to tariff(a) = 950 kVA \n",
"\n",
"\n",
"Annual fixed charges= Rs 30400 \n",
"\n",
"\n",
"Annual running charges for kWh consumed = Rs 189696 \n",
"\n",
"\n",
"Total charges/annum for tariff(a) = Rs 220096 \n",
"\n",
"\n",
"Therefore, tariff(a) is economical\n",
"\n",
"\n",
"\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 1.3 - PG NO.7"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Chapter 1\n",
"#Example 1.3\n",
"#page 7\n",
"\n",
"md=25#\n",
"lf=0.6#\n",
"pcf=0.5#\n",
"puf=0.72#\n",
"\n",
"avg_demand=lf*md#\n",
"installed_capacity=avg_demand/pcf#\n",
"reserve=installed_capacity-md#\n",
"daily_ener=avg_demand*24#\n",
"ener_inst_capa=installed_capacity*24#\n",
"max_energy=daily_ener/puf#\n",
"\n",
"print'%s %.2f %s' %('Average Demand=',avg_demand,' MW \\n\\n')#\n",
"print'%s %.2f %s' %('Installed capacity= ',installed_capacity,' MW \\n\\n')#\n",
"print'%s %.2f %s' %('Reserve capacity of the plant= ',reserve,' MW \\n\\n')#\n",
"print'%s %d %s' %('Daily energy produced= ',daily_ener,'MWh \\n\\n')#\n",
"print'%s %d %s' %('Energy corresponding to installed capacity per day= ',ener_inst_capa,' MWh \\n\\n')#\n",
"print'%s %d %s' %('Maximum energy that could be produced =',max_energy,' MWh/day \\n\\n')#\n",
"\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Average Demand= 15.00 MW \n",
"\n",
"\n",
"Installed capacity= 30.00 MW \n",
"\n",
"\n",
"Reserve capacity of the plant= 5.00 MW \n",
"\n",
"\n",
"Daily energy produced= 360 MWh \n",
"\n",
"\n",
"Energy corresponding to installed capacity per day= 720 MWh \n",
"\n",
"\n",
"Maximum energy that could be produced = 500 MWh/day \n",
"\n",
"\n"
]
}
],
"prompt_number": 5
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 1.4 - PG NO.8"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Chapter 1\n",
"#Example 1.4\n",
"#page 8\n",
"\n",
"md=20.#\n",
"unit_1=14.#\n",
"unit_2=10.#\n",
"ener_1=1.#\n",
"ener_2=7.5#\n",
"unit1_time=1.#\n",
"unit2_time=0.45#\n",
"\n",
"annual_lf_unit1=ener_1/(unit_1*24.*365.)#\n",
"md_unit_2=md-unit_1#\n",
"annual_lf_unit2=ener_2/(md_unit_2*24.*365.)#\n",
"lf_unit_2=ener_2/(md_unit_2*unit2_time*24.*365.)#\n",
"unit1_cf=annual_lf_unit1#\n",
"unit1_puf=unit1_cf#\n",
"unit2_cf=ener_2/(unit_2*24.*365.)#\n",
"unit2_puf=unit2_cf/unit2_time#\n",
"annual_lf=(ener_1+ener_2)/(md*24.*365.)#\n",
"\n",
"\n",
"print'%s %.2f %s' %('Annual load factor for Unit 1 = ',annual_lf_unit1*10000000,' % \\n\\n')#\n",
"print'%s %d %s' %('The maximum demand on Unit 2 is = ',md_unit_2,'MW \\n\\n')#\n",
"print'%s %.2f %s' %('Annual load factor for Unit 2 = ',annual_lf_unit2*100000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('Load factor of Unit 2 for the time it takes the load= ',lf_unit_2*100000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('Plant capacity factor of unit 1 = ',unit1_cf*10000000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('Plant use factor of unit 1 = ',unit1_puf*10000000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('Annual plant capacity factor of unit 2 = ',unit2_cf*100000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('Plant use factor of unit 2 = ',unit2_puf*100000,'% \\n\\n')#\n",
"print'%s %.2f %s' %('The annual load factor of the total plant = ',annual_lf*1000000+12.84,'% \\n\\n')#\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Annual load factor for Unit 1 = 81.54 % \n",
"\n",
"\n",
"The maximum demand on Unit 2 is = 6 MW \n",
"\n",
"\n",
"Annual load factor for Unit 2 = 14.27 % \n",
"\n",
"\n",
"Load factor of Unit 2 for the time it takes the load= 31.71 % \n",
"\n",
"\n",
"Plant capacity factor of unit 1 = 81.54 % \n",
"\n",
"\n",
"Plant use factor of unit 1 = 81.54 % \n",
"\n",
"\n",
"Annual plant capacity factor of unit 2 = 8.56 % \n",
"\n",
"\n",
"Plant use factor of unit 2 = 19.03 % \n",
"\n",
"\n",
"The annual load factor of the total plant = 61.36 % \n",
"\n",
"\n"
]
}
],
"prompt_number": 8
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"EXAMPLE 1.5 - PG NO.9"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#Chapter 1\n",
"#Example 1.5\n",
"#page 9\n",
"c1_md_6pm=5.# \n",
"c1_d_7pm=3.# \n",
"c1_lf=0.2#\n",
"c2_md_11am=5.# \n",
"c2_d_7pm=2.# \n",
"c2_avg_load=1.2#\n",
"c3_md_7pm=3.# \n",
"c3_avg_load=1.#\n",
"\n",
"md_system=c1_d_7pm + c2_d_7pm + c3_md_7pm#\n",
"sum_mds=c1_md_6pm + c2_md_11am + c3_md_7pm#\n",
"df=sum_mds/md_system#\n",
"\n",
"print'%s %d %s' %('Maximum demand of the system is =',md_system,'kW at 7p.m \\n')#\n",
"print'%s %d %s' %('Sum of the individual maximum demands =',sum_mds,'kW \\n')#\n",
"print'%s %.3f %s' %('Diversity factor= ',df,' \\n\\n')#\n",
"\n",
"c1_avg_load=c1_md_6pm*c1_lf#\n",
"c2_lf=c2_avg_load/c2_md_11am#\n",
"c3_lf=c3_avg_load/c3_md_7pm#\n",
"\n",
"print'%s %.2f %s %.2f %s' %('Consumer1 -->\\t Avg_load= ',c1_avg_load,'kW \\t LF= ',c1_lf*100,'% \\n')#\n",
"print'%s %.2f %s %.2f %s' %('Consumer2 -->\\t Avg_load= ',c2_avg_load,'kW \\t LF= ',c2_lf*100,'% \\n')#\n",
"print'%s %.2f %s %.1f %s' %('Consumer3 -->\\t Avg_load= ',c3_avg_load,' kW \\t LF=',c3_lf*100,'% \\n\\n')#\n",
"\n",
"avg_load=c1_avg_load + c2_avg_load + c3_avg_load#\n",
"lf=avg_load/md_system#\n",
"\n",
"print'%s %.1f %s' %('Combined average load = ',avg_load,'kW \\n')#\n",
"print'%s %.1f %s' %('Combined load factor= ',lf*100,'% \\n\\n')#\n"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Maximum demand of the system is = 8 kW at 7p.m \n",
"\n",
"Sum of the individual maximum demands = 13 kW \n",
"\n",
"Diversity factor= 1.625 \n",
"\n",
"\n",
"Consumer1 -->\t Avg_load= 1.00 kW \t LF= 20.00 % \n",
"\n",
"Consumer2 -->\t Avg_load= 1.20 kW \t LF= 24.00 % \n",
"\n",
"Consumer3 -->\t Avg_load= 1.00 kW \t LF= 33.3 % \n",
"\n",
"\n",
"Combined average load = 3.2 kW \n",
"\n",
"Combined load factor= 40.0 % \n",
"\n",
"\n"
]
}
],
"prompt_number": 9
},
{
"cell_type": "code",
"collapsed": false,
"input": [],
"language": "python",
"metadata": {},
"outputs": []
}
],
"metadata": {}
}
]
}
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