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<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Kathryn,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I’ve done a small PV array that was more for classroom
demonstration than actual electric generation; it had 10 small 170 W panels and
one oversized 10 kW inverter for future expansion. The simulation showed that
it produced a peak of 700 W and 81 kWh/yr (in Dallas), this is about what we
expected since the panels were barely enough to reach the inverter’s minimum
tracking volts. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Your inputs look reasonable for the most part, but here are a
few things I would try:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Make sure your array configuration is accurate. The “Inverter
Module PV Array” screen shot shows default values for the number of panels
wired in series and parallel. This has a big impact on how the system operates.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Double check the inverters’ minimum input and tracking volts. You
have both set to 200 V, but there is a minimum operating voltage and a minimum “efficient”
operating voltage. The performance curves won’t fit if the inverters shut down
any time the minimum tracking voltage isn’t met.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Double check your Short Circuit Temperature Coefficient. 0.05300
seems large (for example, the BP SX170B is 0.00065)<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Double check your Short Circuit current. 0.24 amps seems very
small and implies the panels have a lot of resistance. I would expect it to be
a little higher than the max power current.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l1 level1 lfo1'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Under EM1, try setting the cogeneration track mode to simply “track
electric load”. <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>You can also check the PS-C report to see the array’s sum and
peak outputs (should be negative values) for the year. It will also show you the
hours for each part load range.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Also, I’m not quite sure if you’re including the utility rate
screen shots because you’re trying to sell surplus electricity back to the
grid. If so, you’ll need to set up a separate electric meter of type “electric
sale”. That’s a procedure that is a little long to explain, but it’s well
covered in the documentation. Here are a few comments about what I saw in the
screen shots:<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>“Custom Elec Rate” is not serving any meters. You’ll want to
choose a meter under “Electric Meters Served” for the rate to be applied.<o:p></o:p></span></p>
<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='font-size:11.0pt;font-family:Symbol;color:#1F497D'><span
style='mso-list:Ignore'>·<span style='font:7.0pt "Times New Roman"'>
</span></span></span><![endif]><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Your blocks all have one rate with a size of “1”, so I assume
you just want to apply a uniform rate to all kWh. In this case, you don’t
have to set up blocks. You can put in the rate under “Uniform Energy Charge”
in the rate’s Energy/Demand tab. You can leave the Energy Charge Schedule
undefined if it’s the same all year. In the same tab, you can fill out the
demand charges by month.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black;text-transform:uppercase'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> <o:p></o:p></span></p>
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style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> DAKOTA KELLEY</span></b><span
style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> </span><span style='font-size:8.0pt;font-family:
"Franklin Gothic Book","sans-serif";color:black'> </span><b><span
style='font-size:10.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'><o:p></o:p></span></b></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> </span><span style='font-size:
10.0pt;font-family:"Franklin Gothic Book","sans-serif";color:black'>Project
Designer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> Office: 214-744-6199<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> Cell: 214-280-3825<o:p></o:p></span></p>
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color:black'> Fax: 214-744-0770 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'> <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'><a href="http://www.teliospc.com/"><span style='font-family:"Times New Roman","serif"'>http://www.teliospc.com</span></a>
3535 Travis St. Suite 115 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:black'><a href="mailto:dakotak@teliospc.com"><span style='font-family:
"Times New Roman","serif"'>dakotak@teliospc.com</span></a> Dallas,
TX 75204 <o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:#3333FF'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:#3333FF'>| MEP ENGINEERING </span><span style='font-size:8.0pt;
color:#3333FF'>·</span><span style='font-size:8.0pt;font-family:"Franklin Gothic Book","sans-serif";
color:#3333FF'> ENERGY MODELING </span><span style='font-size:8.0pt;color:#3333FF'>·
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<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Kathryn Kerns
[mailto:kathryn.kerns@bceengineers.com] <br>
<b>Sent:</b> Monday, August 10, 2009 12:52 PM<br>
<b>To:</b> equest-users@lists.onebuilding.org<br>
<b>Subject:</b> [Equest-users] EQuest Photvoltaic Module<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'>Has
anyone successfully inserted a photovoltaic array into an eQuest energy model?
I found an example in the Dictionary, created a photovoltaic module and an
inverter and attached it to the EM1 utility meter. However, the model’s total
energy consumption did not change with this model addition. Since the model uses
a Hawaii weather file, I am thinking that there should be some reduction in
energy consumption. I have attached the inputs I used and the warning message I
got from the output file. Can anyone figure out what I am doing wrong? Thanks.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif"'><o:p> </o:p></span></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><strong><span
style='font-family:"Arial","sans-serif";color:black'>Kathryn Kerns</span></strong><o:p></o:p></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><b><span
style='font-size:11.0pt;font-family:"Arial","sans-serif";font-style:normal'>Systems
Specialist</span></b></em><o:p></o:p></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><em><b><span
style='font-variant:small-caps;color:teal;font-style:normal'>BCE</span></b></em><strong><span
style='font-size:10.0pt;font-variant:small-caps;color:teal'> </span><span
style='font-variant:small-caps;color:teal'>Engineers, Inc.<o:p></o:p></span></strong></p>
<p class=section1 style='margin:0in;margin-bottom:.0001pt'><strong><span
style='font-size:9.0pt;color:black'>| Ph: 253.922.0446 | Fx: 253.922.0896 |</span></strong><span
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