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| author | nice | 2014-09-16 17:48:17 +0530 |
|---|---|---|
| committer | nice | 2014-09-16 17:48:17 +0530 |
| commit | b8bb8bbfa81499ad7fc3f3508be257da65f543af (patch) | |
| tree | 204976d3209b79a52e8518c65fa27a4ca48f8489 /Principles_of_Power_System/chapter21.ipynb | |
| parent | 2792e8d6ecab454e3cb8fb1ea1f26f1613bc1e1c (diff) | |
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Diffstat (limited to 'Principles_of_Power_System/chapter21.ipynb')
| -rwxr-xr-x | Principles_of_Power_System/chapter21.ipynb | 69 |
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diff --git a/Principles_of_Power_System/chapter21.ipynb b/Principles_of_Power_System/chapter21.ipynb new file mode 100755 index 00000000..dbd05a4b --- /dev/null +++ b/Principles_of_Power_System/chapter21.ipynb @@ -0,0 +1,69 @@ +{
+ "metadata": {
+ "name": "",
+ "signature": "sha256:74ef32d0e67f3d77b60188556b39e6627674afc8f6e4feb1b0bbc3ae8dbaee2a"
+ },
+ "nbformat": 3,
+ "nbformat_minor": 0,
+ "worksheets": [
+ {
+ "cells": [
+ {
+ "cell_type": "heading",
+ "level": 1,
+ "metadata": {},
+ "source": [
+ "Chapter 21: Protective Relays"
+ ]
+ },
+ {
+ "cell_type": "heading",
+ "level": 3,
+ "metadata": {},
+ "source": [
+ "Example 21.1, Page Number: 507"
+ ]
+ },
+ {
+ "cell_type": "code",
+ "collapsed": false,
+ "input": [
+ "from __future__ import division\n",
+ "\n",
+ "#Variable declaration:\n",
+ "Is = 5 #rated secondary current of C.T\n",
+ "CS = 1.25 #current setting\n",
+ "TSM = 0.6 #time setting multiplier\n",
+ "IF = 4000 #fault current(A)\n",
+ "CR = 400/5 #current ratio of CT\n",
+ "\n",
+ "#Calculation:\n",
+ "Ipc = Is*CS #pick-up current(A)\n",
+ "If = IF*CR #Fault current in relay coil(A)\n",
+ "PSM = If/Ipc #plug setting multiplier\n",
+ "#Corresponding to the plug-setting multiplier of 8 given in fig.21.16,\n",
+ "#the time of operation is 3.5 seconds.\n",
+ "top = 3.5*TSM #Actual relay operating time(s)\n",
+ "\n",
+ "\n",
+ "#Result:\n",
+ "print \"The relay operating time is\",top,\"seconds\""
+ ],
+ "language": "python",
+ "metadata": {},
+ "outputs": [
+ {
+ "output_type": "stream",
+ "stream": "stdout",
+ "text": [
+ "The relay operating time is 2.1 seconds\n"
+ ]
+ }
+ ],
+ "prompt_number": 2
+ }
+ ],
+ "metadata": {}
+ }
+ ]
+}
\ No newline at end of file |