def string_notes(system, run=0.0, stationClass = 1):
"""page 5"""
name, usaf = geo.closestUSAF( geo.zipToCoordinates(system.zipcode), stationClass)
mintemp = epw.minimum(usaf)
twopercentTemp = epw.twopercent(usaf)
ac_rated = 0.0
dc_rated = 0.0
for i in system.shape:
dc_rated += i.array.Pmax
try:
if i.phase == 1:
ac_rated += i.current * i.ac_voltage
else:
ac_rated += i.phase * i.current * i.ac_voltage/ 3**.5
except:
ac_rated += i.Paco
pass
notes = []
notes.append("%s KW AC RATED" % round(ac_rated/1000.0,2))
notes.append("%s KW DC RATED" % round(dc_rated/1000.0,2))
#BUG: This doesn't work for unbalanced 3 phase
if system.phase == 1:
Aac = round(ac_rated/i.ac_voltage,1)
else:
Aac = round(ac_rated/i.ac_voltage/3**.5,1)
notes.append( "System AC Output Current: %s A" % Aac)
notes.append("Nominal AC Voltage: %s V" % i.ac_voltage)
notes.append("")
notes.append("Minimum Temperature: %s C" % mintemp)
notes.append("2 Percent Max Temperature: %s C" % twopercentTemp)
notes.append("Weather Source: %s %s" % (name, usaf))
notes.append("")
di, dp = system.describe()
aMax = 0
for i in system.shape:
if dp.has_key(i.array.panel.model):
notes.append( "PV Module Ratings @ STC")
notes.append("Module Make: %s" % i.array.panel.make)
notes.append("Module Model: %s" % i.array.panel.model)
notes.append("Quantity: %s" % dp[i.array.panel.model])
notes.append("Max Power-Point Current (Imp): %s A" % i.array.panel.Impp)
notes.append("Max Power-Point Voltage (Vmp): %s V" % i.array.panel.Vmpp)
notes.append("Open-Circuit Voltage (Voc): %s V" % i.array.panel.Voc)
notes.append("Short-Circuit Current (Isc): %s A" % i.array.panel.Isc)
notes.append("Maximum Power (Pmax): %s W" % round(i.array.panel.Pmax,1))
#notes.append("Module Rated Max Voltage: %s V" % i.array.panel.Vrated)
notes.append("")
dp.pop(i.array.panel.model)
if di.has_key(i.model):
notes.append("Inverter Make: %s" % i.make)
notes.append("Inverter Model: %s" % i.model)
notes.append("Quantity: %s" % di[i.model])
notes.append("Max Power: %s KW" % round(i.Paco/1000.0,1))
#this is hack... This should be calculated based upon power cores
if hasattr(i,'current'):
notes.append("Max AC Current: %s A" % round(i.current,1))
elif i.ac_voltage == 480:
notes.append("Max AC Current: %s A" % round(i.Paco*1.0/i.ac_voltage/3**.5,1))
else:
notes.append("Max AC Current: %s A" % round(i.Paco*1.0/i.ac_voltage,1))
#greater than 1 in parallel
if len(i.array.shape) > 1:
pass
notes.append("DC Operating Current: %s A" % \
round(i.array.panel.Impp*len(i.array.shape),1))
notes.append("DC Short Circuit Current: %s A" % \
round(i.array.panel.Isc*len(i.array.shape),1))
#greater than 1 in series
if max(i.array.shape)> 1:
notes.append("DC Operating Voltage: %s V" % round(i.array.Vdc(),1))
notes.append("System Max DC Voltage: %s V" % round(i.array.Vmax(mintemp),1))
if i.array.Vmax(mintemp) > 600:
print "WARNING: Array exceeds 600V DC"
notes.append("Pnom Ratio: %s" % round((i.array.Pmax/i.Paco),2))
if (i.array.Vdc(twopercentTemp) *.9) < i.mppt_low:
print "WARNING: Array IV Knee drops out of Inverter range"
if (i.array.Pmax/i.Paco) < 1.1:
print "WARNING: Array potentially undersized"
notes.append("")
di.pop(i.model)
if i.array.Vmax(mintemp) > aMax:
aMax = i.array.Vmax(mintemp)
notes.append("Array Azimuth: %s Degrees" % system.azimuth)
notes.append("Array Tilt: %s Degrees" % system.tilt)
s9 = system.solstice(9)
s15 = system.solstice(15)
notes.append("December 21 9:00 AM Sun Azimuth: %s Degrees" % \
(round(degrees(s9[1]),1)))
notes.append("December 21 9:00 AM Sun Altitude: %s Degrees" % \
(round(degrees(s9[0]),1)))
notes.append("December 21 3:00 PM Sun Azimuth: %s Degrees" % \
(round(degrees(s15[1]),1)))
notes.append("December 21 3:00 PM Sun Altitude: %s Degrees" % \
(round(degrees(s9[0]),1)))
if 'geomag' in sys.modules:
notes.append("Magnetic declination: %s Degrees" % \
round(geomag.declination(dlat=system.place[0],dlon=system.place[1])))
notes.append("Minimum Row space ratio: %s" % \
round(system.minRowSpace(1.0),2))
print "\n".join(notes)
print ""
print "Minimum Bundle"
minC = vd.vd(Aac,5,verbose=False)
try:
ee.assemble(minC,Aac,conduit='STEEL')
if run > 0:
print "Long Run"
minC = vd.vd(Aac,run,v=i.ac_voltage,tAmb=15,pf=.95,material='AL',verbose=False)
ee.assemble(minC,Aac,conduit='PVC')
except:
print "Warning: Multiple sets of conductors"
return notes
def micro_calcs(system,d,Vnominal=240):
"""page 4"""
print ""
print vd.vd(sum([i.Paco for i in system.shape])/Vnominal,d)
pass
def act(ir, t, s):
v = varix(ir, t)
try:
vc = ir.valcs(v)
except:
return "Illegal variable index: %d!" % v
if isinstance(v, str): return v
if len(t) == 1:
try:
l = int(t[0])
except:
if t[0] in ir.valcs.values:
l = list(ir.values).index(t[0])
else:
return "Not good for value index or name: %s!" % l
if not 0 <= l < vc:
return "Illegal value index: %d!" % v
e = [0.0] * vc
e[l] = 1.0
else:
try:
e = map(float, t)
if len(e) != vc:
return "Evidence vector of length %d expected (got %d)!" \
% (vc, len(e))
except:
return "Could not convert values to float!"
bns = s['bn_o']
# create bna twin
vrc = len(ir.valcs.varnames)
v2 = v + vrc
vns2 = ir.valcs.varnames + tuple([vn + '*' for vn in ir.valcs.varnames])
vls2 = ir.valcs.values + ir.valcs.values
valcs2 = vd.vd(vns2, vls2)
bn2 = bn.BN(2 * vrc)
for (f, t) in bns.arcs():
bn2.addarc((f, t))
if bns.parents(f):
bn2.addarc((f + vrc, t + vrc))
else:
bn2.addarc((f, t + vrc))
# Now cut remove the arcs by action
for p in bn2.parents(v2):
bn2.delarc((p, v2))
# create thta by bna
tht2 = s['tht_o'][:] + s['tht_o'][:]
tht2[v2] = {(): [1.0 / vc] * vc}
# get inferer for the acted model
needed = ['ifr_o']
haved = {'bn_o': bn2, 'tht_o': tht2, 'vd_o': valcs2}
inout.inout(needed, haved)
ir2 = haved['ifr_o']
s2 = s.copy()
w2 = s2['watch'][:]
for i in s['watch']:
w2.append(i + vrc)
s2['watch'] = w2
print bn2.arcs()
evidence(ir2, ["D", "1"], s2)
ir2.insert_evidence(v2, e)
infer(ir2, [], s2)
#print a.vd()
#print b.vd()
#print a.a
#print "Voltage Drop"
#print voltagedrop(w1, w1, b)
print "resistance"
print resistance(conductor("400","AL"),"STEEL",.77)
print resistance(conductor("400","AL"),"STEEL","DC")
print "transformer"
t1 = transformer(1000000,8404,2143)
print t1.output(0)
print t1.output(500000)
bund= [conductor("400","AL"),conductor("400","AL"),conductor("6","CU"),conductor("6","CU")]
print conductorArea(bund)
print findConduit(conductorArea(bund))
print "CU EGC", findEGC(conductor("400",'AL'),100)
print "AL EGC", findEGC(conductor("400",'AL'),100,'AL')
print "AL EGC", findEGC(conductor("1/0",'AL'),40)
print "AL EGC", findEGC(conductor("1/0",'AL'),40,'AL')
print "AL EGC", findEGC(conductor("1",'AL'),100)
import vd
cond = vd.vd(18,250,material='AL')
print "found",cond
print "EGC", findEGC(cond,18*1.25,'AL')
print ocpSize(10.1)
print ocpSize(9)
print findConductor(.001)
print conductorAmpacity(200,"CU")
print checkAmpacity(cond, 20, ambient = 30)
def string_notes(system, run=0.0):
"""page 5"""
stationClass = 3
name, usaf = geo.closestUSAF( geo.zipToCoordinates(system.zipcode), stationClass)
mintemp = epw.minimum(usaf)
twopercentTemp = epw.twopercent(usaf)
ac_rated = 0
dc_rated = 0
for i in system.shape:
dc_rated += i.array.Pmax
ac_rated += i.Paco
notes = []
notes.append("%s KW AC RATED" % round(ac_rated/1000.0,2))
notes.append("%s KW DC RATED" % round(dc_rated/1000.0,2))
#BUG: This doesn't work for 3 phase
if system.phase == 1:
Aac = round(sum([i.Paco for i in system.shape])/i.ac_voltage,1)
else:
Aac = round(sum([i.Paco for i in system.shape])/i.ac_voltage/3**.5,1)
notes.append( "System AC Output Current: %s A" % Aac)
notes.append("Nominal AC Voltage: %s V" % i.ac_voltage)
notes.append("")
notes.append("Minimum Temperature: %s C" % mintemp)
notes.append("2 Percent Max Temperature: %s C" % twopercentTemp)
notes.append("")
di, dp = system.describe()
aMax = 0
for i in system.shape:
if dp.has_key(i.array.panel.model):
notes.append( "PV Module Ratings @ STC")
notes.append("Module Make: %s" % i.array.panel.make)
notes.append("Module Model: %s" % i.array.panel.model)
notes.append("Quantity: %s" % dp[i.array.panel.model])
notes.append("Max Power-Point Current (Imp): %s A" % i.array.panel.Impp)
notes.append("Max Power-Point Voltage (Vmp): %s V" % i.array.panel.Vmpp)
notes.append("Open-Circuit Voltage (Voc): %s V" % i.array.panel.Voc)
notes.append("Short-Circuit Current (Isc): %s A" % i.array.panel.Isc)
notes.append("Maximum Power (Pmax): %s W" % round(i.array.panel.Pmax,1))
#notes.append("Module Rated Max Voltage: %s V" % i.array.panel.Vrated)
notes.append("")
dp.pop(i.array.panel.model)
if di.has_key(i.model):
notes.append("Inverter Make: %s" % i.make)
notes.append("Inverter Model: %s" % i.model)
notes.append("Quantity: %s" % di[i.model])
notes.append("Max Power: %s KW" % round(i.Paco/1000.0,1))
#this is hack... This should be calculated based upon power cores
if i.ac_voltage == 480:
notes.append("Max AC Current: %s A" % round(i.Paco*1.0/i.ac_voltage/3**.5,1))
else:
notes.append("Max AC Current: %s A" % round(i.Paco*1.0/i.ac_voltage,1))
#greater than 1 in parallel
if len(i.array.shape) > 1:
pass
notes.append("DC Operating Current: %s A" % \
round(i.array.panel.Impp*len(i.array.shape),1))
notes.append("DC Short Circuit Current: %s A" % \
round(i.array.panel.Isc*len(i.array.shape),1))
#greater than 1 in series
if max(i.array.shape)> 1:
notes.append("DC Operating Voltage: %s V" % round(i.array.Vdc(),1))
notes.append("System Max DC Voltage: %s V" % round(i.array.Vmax(mintemp),1))
notes.append("Pnom Ratio: %s" % round((i.array.Pmax/i.Paco),2))
notes.append("")
di.pop(i.model)
if i.array.Vmax(mintemp) > aMax:
aMax = i.array.Vmax(mintemp)
notes.append("Array Azimuth: %s Degrees" % system.azimuth)
notes.append("Array Tilt: %s Degrees" % system.tilt)
notes.append("December 21 9:00 AM Sun Azimuth: %s Degrees" % \
int(round(degrees(system.solstice(9)[1]),0)))
notes.append("December 21 3:00 PM Sun Azimuth: %s Degrees" % \
int(round(degrees(system.solstice(15)[1]),0)))
if sys.modules['geomag']:
notes.append("Magnetic declination: %s Degrees" % \
round(geomag.declination(dlat=system.place[0],dlon=system.place[1])))
notes.append("Minimum Row space ratio: %s" % \
round(system.minRowSpace(1.0),2))
print "\n".join(notes)
print ""
print "Minimum Bundle"
minC = vd.vd(Aac,5)
ee.assemble(minC,Aac,conduit='STEEL')
if run > 0:
print "Long Run"
minC = vd.vd(Aac,run,v=i.ac_voltage,tAmb=15,pf=.95,material='AL')
ee.assemble(minC,Aac,conduit='PVC')
return notes
