From 251a07c4cbed1a5a960f5ed416ce6ac13c8152b7 Mon Sep 17 00:00:00 2001 From: hardythe1 Date: Thu, 11 Jun 2015 17:31:11 +0530 Subject: add books --- sample_notebooks/MayurSabban/ChapterNo04.ipynb | 257 +++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100755 sample_notebooks/MayurSabban/ChapterNo04.ipynb (limited to 'sample_notebooks/MayurSabban/ChapterNo04.ipynb') diff --git a/sample_notebooks/MayurSabban/ChapterNo04.ipynb b/sample_notebooks/MayurSabban/ChapterNo04.ipynb new file mode 100755 index 00000000..c6f434bb --- /dev/null +++ b/sample_notebooks/MayurSabban/ChapterNo04.ipynb @@ -0,0 +1,257 @@ +{ + "metadata": { + "name": "" + }, + "nbformat": 3, + "nbformat_minor": 0, + "worksheets": [ + { + "cells": [ + { + "cell_type": "heading", + "level": 1, + "metadata": {}, + "source": [ + "Chapter 02 : Capacitance Of Transmission Lines" + ] + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.1, Page No 75" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "D = 20.0 #in ft\n", + "f = 60.0 #in Hz\n", + "\n", + "#From Table A.1 and A.3\n", + "d = 0.642 \t\t\t#in inches\n", + "X_a = 0.1074e6 \t\t#in ohm-mi\n", + "X_d = 0.0889e6 \t\t#in ohm-mi\n", + "\n", + "#finding radius\n", + "r = d/(2*12) \t\t#divided by 12 convert in to ft\n", + "\n", + "#Calculations\n", + "print('Calculations using conductor spacing and radius')\n", + "X_c = 1.779 * math.log(D/r)/f\n", + "B_c = 1 / X_c\n", + "print(\" Capactive reatance = %.4fe6 ohm mi to neutral \" %X_c)\n", + "print(\" Capactive susceptance = %.4fe-6 mho/mi to neutral \" %B_c)\n", + "\n", + "#calculations using capacitive reactance at 1-ft spacing and spacing factor\n", + "print('Calculations using capacitive reactance at 1-ft spacing and spacing factor')\n", + "X_c1 = X_a + X_d\n", + "print(\" Capactive reatance = %.4fe6 ohm mi per conductor \" %(X_c1/10**6))\n", + "X_c11 = 2 * X_c1\n", + "B_c1 = 1 / X_c11\n", + "\n", + "#Results\n", + "print(\" Line-to-line capactive reatance = %.4fe6 ohm mi \" %(X_c11/10**6))\n", + "print(\" Line-to-line capactive susceptance = %.4fe-6 mho mi \" %(B_c1*10**6))" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "Calculations using conductor spacing and radius\n", + " Capactive reatance = 0.1962e6 ohm mi to neutral \n", + " Capactive susceptance = 5.0970e-6 mho/mi to neutral \n", + "Calculations using capacitive reactance at 1-ft spacing and spacing factor\n", + " Capactive reatance = 0.1963e6 ohm mi per conductor \n", + " Line-to-line capactive reatance = 0.3926e6 ohm mi \n", + " Line-to-line capactive susceptance = 2.5471e-6 mho mi \n" + ] + } + ], + "prompt_number": 14 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.2, Page No 80" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "D_12 = 20.0\t\t\t#in ft\n", + "D_23 = D_12\n", + "D_31 = 38.0\t\t\t#in ft\n", + "f = 60.0\t\t\t#in Hz\n", + "V = 220e3\t\t\t#in volts\n", + "l = 175\t\t\t\t#in mi\n", + "k = 8.85e-12\t\t#permittivity in F/m\n", + "#From tables A.1 and A.3\n", + "d = 1.108#in inches\n", + "X_a1 = 0.0912e6#in ohm mi\n", + "X_d1 = 0.0952e6#in ohm mi\n", + "\n", + "#Calculations\n", + "r = d / ( 2 * 12)#division by 12 to convert in to ft\n", + "D_eq = (D_12*D_23*D_31)**(1.0/3)\n", + "C_n = (2*math.pi*k)/math.log(D_eq/r)\n", + "X_c = 1.0/(2*math.pi*f*C_n*1609)\t\t#division by 1609 to convert to ohm mi\n", + "\n", + "print(\" Capacitance = %.4fe-12 F/m \" %(C_n*1e12))\n", + "print(\" Capacitive reactance = %.4fe6 ohm mi \" %(X_c/1e6))\n", + "\n", + "#Calculations From tables\n", + "X_c1 = X_a1 + X_d1\n", + "print('Using capacitive reactance at 1-ft spacing and spacing factor')\n", + "print(\" Capacitive reactance = %.4fe6 ohm mi \" %(X_c1/1e6))\n", + "X_c_l = X_c1/l\t\t\t#Capacitive reactance for 175mi\n", + "I_chg = 2*math.pi*f*V*C_n*1609/math.sqrt(3.0)\n", + "I_chg_l = I_chg * l\n", + "Q =math.sqrt(3)*V*I_chg_l\n", + "\n", + "\n", + "#Results\n", + "print('For a lenght of 175mi')\n", + "print(\" Capacitive reactance = %.4f ohm to neutral \" %X_c_l)\n", + "print(\" Charging current per mile = %.3f A/mi \" %I_chg)\n", + "print('For a lenght of 175mi')\n", + "print(\" Charging current = %.0f A \" %I_chg_l)\n", + "print(\" Total charging megavolt-amperes = %.1f Mvar \" %(Q/1e6))\n" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Capacitance = 8.8472e-12 F/m \n", + " Capacitive reactance = 0.1863e6 ohm mi \n", + "Using capacitive reactance at 1-ft spacing and spacing factor\n", + " Capacitive reactance = 0.1864e6 ohm mi \n", + "For a lenght of 175mi\n", + " Capacitive reactance = 1065.1429 ohm to neutral \n", + " Charging current per mile = 0.682 A/mi \n", + "For a lenght of 175mi\n", + " Charging current = 119 A \n", + " Total charging megavolt-amperes = 45.5 Mvar \n" + ] + } + ], + "prompt_number": 15 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.3, Page No 85" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "d = 0.45 #in m\n", + "k = 8.85e-12 #in F/m\n", + "D_ab = 8 #in m\n", + "D_bc = D_ab\n", + "D_ca = 16 #in m\n", + "f = 60 #in Hz\n", + "\n", + "#From tables\n", + "D = 1.382 #in inches\n", + "\n", + "#Calculations\n", + "r = D*0.3048/(2.0*12) #divison by 12 to convert in to ft\n", + " #multiplication by 0.3048 to convert ft to m\n", + "D_b_sC = math.sqrt( r * d)\n", + "D_eq = (D_ab * D_bc * D_ca)**(1/3)\n", + "C_m = 2* math.pi*k/math.log(D_eq / D_b_sC)\n", + "X_c = 1e-3/(2*math.pi*f*C_m) #1e-3 #to convert m to km\n", + "\n", + "#Results\n", + "print(\" Capacitance = %.3fe-12 F/m \" %(C_m * 1e12))\n", + "print(\" Capacitive reactance = %.4fe6 ohm km per phase to neutral\" %(X_c/1e6))" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + " Capacitance = 22.972e-12 F/m \n", + " Capacitive reactance = 0.1155e6 ohm km per phase to neutral\n" + ] + } + ], + "prompt_number": 16 + }, + { + "cell_type": "heading", + "level": 2, + "metadata": {}, + "source": [ + "Example 4.4 Page No 85" + ] + }, + { + "cell_type": "code", + "collapsed": false, + "input": [ + "import math\n", + "#initialisation of variables\n", + "f = 60.0\t\t#in Hz\n", + "k = 8.85e-12\t#in F/m\n", + "D_eq = 16.1\t\t#in ft\n", + "D_a_a1 = 26.9\n", + "D_b_b1 = 21.0\n", + "D_c_c1 = D_a_a1 #in ft\n", + "\n", + "#From Table A.1\n", + "d = 0.680#in inches\n", + "\n", + "#calculations\n", + "r = d /(2*12)\n", + "D_p_sC = (math.sqrt(D_a_a1 * r) * math.sqrt(D_b_b1 * r) * math.sqrt(D_c_c1 * r))**(1.0/3)\n", + "C_n = 2 * math.pi * k / math.log(D_eq / D_p_sC)\n", + "B_c = 2 * math.pi * f * C_n * 1609.0\t#1609 to convert from m to mi\n", + "\n", + "#Results\n", + "print(\"printprint Capacitance = %.3fe-12 F/m printprint\" %(C_n*1e12))\n", + "print(\"printprint Capacitive susceptance = %.2fe-6 mho per mi per phase to neutral\" %(B_c*1e6))" + ], + "language": "python", + "metadata": {}, + "outputs": [ + { + "output_type": "stream", + "stream": "stdout", + "text": [ + "printprint Capacitance = 18.812e-12 F/m printprint\n", + "printprint Capacitive susceptance = 11.41e-6 mho per mi per phase to neutral\n" + ] + } + ], + "prompt_number": 17 + } + ], + "metadata": {} + } + ] +} \ No newline at end of file -- cgit