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{
"metadata": {
"name": ""
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"Chapter 20 : Load Frequency Control"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 20.1, Page No 676"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"#initialisation of variables\n",
"#let x MW flows from A to B\n",
"#Load on station A=75+x\n",
"#%drop in speed =5*(75+x)/200\n",
"#load on station B =(30-x)\n",
"#%drp in speed=(30-x)*4/75\n",
"x=(1.6-1.875)/(.025+.12+.0533) #by manipulating equation : 5*(75+x)/200 + 3*x/25 =(30-x)*4/75 \n",
"\n",
"#Results\n",
"print(\"x=%.2f MW\\n\" %x)\n",
"print(\"which means power of magnitude %.2f MW will be from B to A\" %abs(x))"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"x=-1.39 MW\n",
"\n",
"which means power of magnitude 1.39 MW will be from B to A\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 20.2, Page No 676"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"#initialisation of variables\n",
"x=(250*11.0)/(21.0+11)\t\t# by manipulating equation : 5x/110=5x(250-x)/210\n",
"P=250-x\t\t\t\t\t\t#Power shared by 210 MW unit \n",
"\n",
"#Results\n",
"print(\"Power supplied by 210 MW unit = %.2f MW \\n\" %P)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"Power supplied by 210 MW unit = 164.06 MW \n",
"\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 20.3, Page No 677"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"import math\n",
"#initialisation of variables\n",
"E=4.5*100\t\t#Energy stored at no load(MJ)\n",
"E1=25*.6\t\t#Energy lost by rotor(MJ)\n",
"\n",
"#Calculations\n",
"fnew=math.sqrt((E-E1)/E)*50\n",
"\n",
"#Results\n",
"print(\"New frequency will be %.2f Hz\" %fnew)"
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"New frequency will be 49.16 Hz\n"
]
}
],
"prompt_number": 3
}
],
"metadata": {}
}
]
}
|
