Updated circuits to use database for information.
This commit is contained in:
Jeff
parent
8784a2ba89
commit
84181df2a2
2 changed files with 275 additions and 58 deletions
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@ -48,7 +48,7 @@
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{
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"data": {
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"text/plain": [
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"[12.96, 5.4]"
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"[24.96, 10.4]"
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]
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},
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"execution_count": 2,
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@ -75,7 +75,7 @@
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{
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"data": {
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"text/plain": [
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"[24.96, 10.4]"
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"[12.96, 5.4]"
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]
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},
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"execution_count": 3,
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@ -102,7 +102,7 @@
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{
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"data": {
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"text/plain": [
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"[6.24, 2.6]"
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"[3.24, 1.35]"
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]
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},
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"execution_count": 4,
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@ -126,29 +126,116 @@
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"- Load in Amps\n",
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"- Distance in meters\n",
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"- Voltage drop percent (default 3%)\n",
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"- Number of parallel runs (default 1 run)\n"
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"- Number of parallel runs (default 1 run)\n",
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"\n",
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"The function returns a string that is either AWG or kcmil. AWG from 14AWG to 4/0 AWG and kcmil above that."
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]
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 5,
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"metadata": {},
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"outputs": [
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{
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"ename": "TypeError",
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"evalue": "unsupported operand type(s) for /: 'function' and 'int'",
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"output_type": "error",
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"traceback": [
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"\u001b[1;31m---------------------------------------------------------------------------\u001b[0m",
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"\u001b[1;31mTypeError\u001b[0m Traceback (most recent call last)",
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"Input \u001b[1;32mIn [5]\u001b[0m, in \u001b[0;36m<cell line: 1>\u001b[1;34m()\u001b[0m\n\u001b[1;32m----> 1\u001b[0m \u001b[43mjmk\u001b[49m\u001b[38;5;241;43m.\u001b[39;49m\u001b[43mvoltage_drop_conductors\u001b[49m\u001b[43m(\u001b[49m\u001b[38;5;241;43m120\u001b[39;49m\u001b[43m,\u001b[49m\u001b[38;5;241;43m200\u001b[39;49m\u001b[43m,\u001b[49m\u001b[38;5;241;43m100\u001b[39;49m\u001b[43m,\u001b[49m\u001b[43mv_drop_percent\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[43m \u001b[49m\u001b[38;5;241;43m0.03\u001b[39;49m\u001b[43m,\u001b[49m\u001b[43mruns\u001b[49m\u001b[43m \u001b[49m\u001b[38;5;241;43m=\u001b[39;49m\u001b[43m \u001b[49m\u001b[38;5;241;43m1\u001b[39;49m\u001b[43m)\u001b[49m\n",
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"File \u001b[1;32mc:\\Business\\JMKEngineering\\Engineering\\Active\\TEP Group\\24xx_TEP_Shubie-tower-project\\eng\\resources\\JEPL\\jepl\\jepl_circuits.py:124\u001b[0m, in \u001b[0;36mvoltage_drop_conductors\u001b[1;34m(voltage, current, distance, v_drop_percent, runs, material)\u001b[0m\n\u001b[0;32m 96\u001b[0m \u001b[38;5;250m\u001b[39m\u001b[38;5;124;03m'''\u001b[39;00m\n\u001b[0;32m 97\u001b[0m \u001b[38;5;124;03m Calculates the minimum conductor size to accomodate for voltage drop based on:\u001b[39;00m\n\u001b[0;32m 98\u001b[0m \n\u001b[1;32m (...)\u001b[0m\n\u001b[0;32m 119\u001b[0m \n\u001b[0;32m 120\u001b[0m \u001b[38;5;124;03m'''\u001b[39;00m\n\u001b[0;32m 123\u001b[0m \u001b[38;5;66;03m# Determine the resistivity needed in ohms/km\u001b[39;00m\n\u001b[1;32m--> 124\u001b[0m resistivity \u001b[38;5;241m=\u001b[39m ((\u001b[43mvd\u001b[49m\u001b[38;5;241;43m/\u001b[39;49m\u001b[43mcurrent\u001b[49m)\u001b[38;5;241m/\u001b[39mruns)\u001b[38;5;241m/\u001b[39m((\u001b[38;5;241m2\u001b[39m \u001b[38;5;241m*\u001b[39m distance)\u001b[38;5;241m/\u001b[39m\u001b[38;5;241m1000\u001b[39m)\n\u001b[0;32m 125\u001b[0m \u001b[38;5;28mprint\u001b[39m(resistivity)\n\u001b[0;32m 127\u001b[0m \u001b[38;5;28;01mimport\u001b[39;00m \u001b[38;5;21;01mos\u001b[39;00m\n",
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"\u001b[1;31mTypeError\u001b[0m: unsupported operand type(s) for /: 'function' and 'int'"
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]
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"data": {
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"text/plain": [
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"'350'"
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]
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},
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"execution_count": 5,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"jmk.voltage_drop_conductors(120,200,100)"
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"jmk.voltage_drop_conductors(120,100,325,material='al',runs=4)"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"The conductor sizing currently only works for CEC and does not do derating, yet."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 6,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"[350, 2]"
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]
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},
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"execution_count": 6,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"jmk.conductor_size(1000, temp = 75, material = 'cu', code = 'CEC', raceway = False, ambient = 30, max = 500)\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 7,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"[400, 3]"
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]
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},
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"execution_count": 7,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"jmk.conductor_size(1000, temp = 75, material = 'cu', code = 'CEC', raceway = True, ambient = 30, max = 500)\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 8,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"[400, 3]"
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]
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},
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"execution_count": 8,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"jmk.conductor_size(1000, temp = 75, material = 'al', code = 'CEC', raceway = False, ambient = 30, max = 500)\n"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 9,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"[400, 3]"
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]
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},
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"execution_count": 9,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"jmk.conductor_size(1000, temp = 75, material = 'al', code = 'CEC', raceway = True, ambient = 30, max = 500)\n"
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]
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},
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{
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@ -169,7 +256,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 10,
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"metadata": {},
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"outputs": [
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{
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@ -178,7 +265,7 @@
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"37"
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]
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},
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"execution_count": 5,
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"execution_count": 10,
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"metadata": {},
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"output_type": "execute_result"
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}
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@ -196,7 +283,7 @@
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},
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{
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"cell_type": "code",
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"execution_count": null,
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"execution_count": 11,
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"metadata": {},
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"outputs": [
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{
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@ -205,7 +292,7 @@
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"33"
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]
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},
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"execution_count": 6,
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"execution_count": 11,
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"metadata": {},
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"output_type": "execute_result"
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}
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@ -231,7 +318,7 @@
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.10.1"
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"version": "3.11.2"
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}
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},
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"nbformat": 4,
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@ -108,28 +108,33 @@ def voltage_drop_conductors(voltage,current,distance,v_drop_percent = 0.03,runs
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First we calculate the necessary resistivity:
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resistivity = ohms/km
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but the distance is 2x (there and back)
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resistivity = ohms/[(2 * distance)/1000] {ohms/km}
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ohms = v/I or v_drop_percent/current
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ohms = v/I or (v_drop/voltage)/current
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resistivity = (v_drop_percent/current)/[(2 * distance)/1000]
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v_drop = v_drop_percent * voltage
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resistivity = (v_drop/current)/[(2 * distance)/1000]
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This works for 1 run, but for parallel runs Rtot = R/n where n is the number of runs.
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in this equation we are looking for R, not Rtot, so we multiply the top by the number of runs.
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therefore:
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resistivity = [(v_drop_percent/current)*runs]/[(2 * distance)/1000]
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resistivity = [(v_drop/current)*runs]/[(2 * distance)/1000]
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'''
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# Determine the resistivity needed in ohms/km
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resistivity = ((v_drop_percent/current)*runs)/((2 * distance)/1000)
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v_drop = v_drop_percent * voltage
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resistivity = ((v_drop/current)*runs)/((2 * distance)/1000)
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if resistivity < 0.1214:
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print("add parallel runs")
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print(resistivity)
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else:
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print(resistivity)
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import os
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import sys
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@ -146,7 +151,7 @@ def voltage_drop_conductors(voltage,current,distance,v_drop_percent = 0.03,runs
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cur.execute('SELECT "Conductor Size" FROM "SW-Spec 25055" WHERE "Conductor Number" = 3 AND "AC Resistance"<?', (resistivity,))
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conductor = cur.fetchone()[0]
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print(conductor)
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#print(conductor)
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except sqlite3.OperationalError as e:
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print(e)
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@ -158,7 +163,7 @@ def voltage_drop_conductors(voltage,current,distance,v_drop_percent = 0.03,runs
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cur.execute('SELECT "Conductor Size" FROM "SW-Spec 25051" WHERE "Conductor Number" = 3 AND "AC Resistance"<?', (resistivity,))
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conductor = cur.fetchone()[0]
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print(conductor)
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#print(conductor)
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except sqlite3.OperationalError as e:
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print(e)
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@ -170,8 +175,19 @@ def voltage_drop_conductors(voltage,current,distance,v_drop_percent = 0.03,runs
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# These functions need to be re-written with the databases.
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'''
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'''
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def current_for_lookup(current,max_current):
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'''
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This is a helper function for conductor_size. It is used to calculate the number of parallel runs needed,
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and the conductor current for those runs.
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'''
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num_parallel = math.ceil(current / max_current)
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con_current = current / num_parallel
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return (con_current,num_parallel)
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def conductor_size(current, temp = 75, material = 'cu', code = 'CEC', raceway = True, ambient = 30, max = 500):
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'''
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@ -201,40 +217,154 @@ def conductor_size(current, temp = 75, material = 'cu', code = 'CEC', raceway =
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if material not in valid_material:
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return print(material + " is not a valid material. I should be 'al' or 'cu'.")
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if temp == 90:
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conductor_current_index = 3
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elif temp == 75:
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conductor_current_index = 2
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else:
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conductor_current_index = 1
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# select the correct code table
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if (code == 'CEC') & (material == 'CU') & (raceway == False):
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code_table = CEC_table1
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elif (code == 'CEC') & (material == 'CU') & (raceway == True):
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code_table = CEC_table2
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elif (code =='CEC') & (material =='AL') & (raceway == False):
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code_table = CEC_table3
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elif (code =='CEC') & (material =='AL') & (raceway == True):
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code_table = CEC_table4
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if (code == 'CEC') & (material == 'CU') & (raceway == False): # CEC Table 1
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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cur.execute('SELECT * FROM "Table1" WHERE "size" = ? ', (max,))
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max_conductor_current = cur.fetchone()
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max_current = max_conductor_current[conductor_current_index]
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except sqlite3.OperationalError as e:
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print(e)
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current_lookup = current_for_lookup(current,max_current)
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current = current_lookup[0]
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num_parallel = current_lookup[1]
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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if temp == 90:
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cur.execute('SELECT size FROM "Table1" WHERE "90" > ? ', (current,))
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elif temp ==75:
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cur.execute('SELECT size FROM "Table1" WHERE "75" > ? ', (current,))
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else:
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cur.execute('SELECT size FROM "Table1" WHERE "60" > ? ', (current,))
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conductor_size = cur.fetchone()[0]
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#print(conductor_size)
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except sqlite3.OperationalError as e:
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print(e)
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elif (code == 'CEC') & (material == 'CU') & (raceway == True): # CEC Table 2
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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cur.execute('SELECT * FROM "Table2" WHERE "size" = ? ', (max,))
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max_conductor_current = cur.fetchone()
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max_current = max_conductor_current[conductor_current_index]
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except sqlite3.OperationalError as e:
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print(e)
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current_lookup = current_for_lookup(current,max_current)
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current = current_lookup[0]
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num_parallel = current_lookup[1]
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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if temp == 90:
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cur.execute('SELECT size FROM "Table2" WHERE "90" > ? ', (current,))
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elif temp ==75:
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cur.execute('SELECT size FROM "Table2" WHERE "75" > ? ', (current,))
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else:
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cur.execute('SELECT size FROM "Table2" WHERE "60" > ? ', (current,))
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conductor_size = cur.fetchone()[0]
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#print(conductor_size)
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except sqlite3.OperationalError as e:
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print(e)
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elif (code =='CEC') & (material =='AL') & (raceway == False): # CEC Table 3
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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cur.execute('SELECT * FROM "Table3" WHERE "size" = ? ', (max,))
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max_conductor_current = cur.fetchone()
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max_current = max_conductor_current[conductor_current_index]
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except sqlite3.OperationalError as e:
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print(e)
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current_lookup = current_for_lookup(current,max_current)
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current = current_lookup[0]
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num_parallel = current_lookup[1]
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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if temp == 90:
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cur.execute('SELECT size FROM "Table3" WHERE "90" > ? ', (current,))
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elif temp ==75:
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cur.execute('SELECT size FROM "Table3" WHERE "75" > ? ', (current,))
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else:
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cur.execute('SELECT size FROM "Table3" WHERE "60" > ? ', (current,))
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conductor_size = cur.fetchone()[0]
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#print(conductor_size)
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except sqlite3.OperationalError as e:
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print(e)
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elif (code =='CEC') & (material =='AL') & (raceway == True): # CEC Table 4
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
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cur = con.cursor()
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cur.execute('SELECT * FROM "Table4" WHERE "size" = ? ', (max,))
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max_conductor_current = cur.fetchone()
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max_current = max_conductor_current[conductor_current_index]
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except sqlite3.OperationalError as e:
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print(e)
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current_lookup = current_for_lookup(current,max_current)
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current = current_lookup[0]
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num_parallel = current_lookup[1]
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try:
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with sqlite3.connect("jepl-cec21.db") as con:
|
||||
cur = con.cursor()
|
||||
if temp == 90:
|
||||
cur.execute('SELECT size FROM "Table4" WHERE "90" > ? ', (current,))
|
||||
|
||||
elif temp ==75:
|
||||
cur.execute('SELECT size FROM "Table4" WHERE "75" > ? ', (current,))
|
||||
|
||||
else:
|
||||
cur.execute('SELECT size FROM "Table4" WHERE "60" > ? ', (current,))
|
||||
conductor_size = cur.fetchone()[0]
|
||||
|
||||
#print(conductor_size)
|
||||
|
||||
except sqlite3.OperationalError as e:
|
||||
print(e)
|
||||
elif (code =='NEC') & (material =='CU'):
|
||||
return (' I haven\'t created this table yet')
|
||||
elif (code =='NEC') & (material =='AL'):
|
||||
return (' I haven\'t created this table yet')
|
||||
else:
|
||||
return ('The variables were\'t right, but I\'m a loss to why.')
|
||||
|
||||
temp = str(temp)
|
||||
|
||||
max_current_loc = code_table.loc[code_table['size'] == max][str(temp)]
|
||||
max_current = max_current_loc.iloc[0]
|
||||
|
||||
num_parallel = math.ceil(current / max_current)
|
||||
con_current = current / num_parallel
|
||||
|
||||
size = code_table[code_table[temp].ge(con_current)]['size'].iloc[0]
|
||||
|
||||
return [size,num_parallel]
|
||||
'''
|
||||
'''
|
||||
# ^
|
||||
# These functions need to be re-written with the databases.
|
||||
|
||||
'''
|
||||
'''
|
||||
return [conductor_size,num_parallel]
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue