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<p>Tri,</p>
<p> There are a number of different ways that you can do this. The
method will depend on which battery and battery controller models
are being used and even more specifically which <i>modes </i>of
the battery and battery charge controller you are using. In
general, look for ways of setting up the controller so that it
does not go into a "charge battery from grid" mode. Then you can
interpret the "grid power needed" output instead as a "load unmet"
condition.</p>
<p>kind regards,</p>
<p> David</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 07/12/2019 01:28, Tri Ayodha via
TRNSYS-users wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAMYV_GMGHLTA88AAdgB43x+=Z0jO6avT9Y3dpPdKwmzFx7oiEw@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="auto">Dear All,
<div dir="auto"><br>
</div>
<div dir="auto">I want to make simulation of pv system to supply
electricity for specific demand. The thing is, i don't want to
use grid as complement of pv system. So I can predict when the
electricity shortage will occur, how long, etc.</div>
<div dir="auto"><br>
</div>
<div dir="auto">I have tried to make it in trnsys, but it is
automatically powered by grid when the power from pv and
battery is not sufficient. So, I made new simple component to
turn off the system when the power generation is not enough.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Is there any way to turn off the power from grid
without making new component?</div>
<div dir="auto">If so, can it be explained in detail?which type
should I use?</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Thank you,</div>
<div dir="auto"><br>
</div>
<div dir="auto">Tri Ayodha Ajiwiguna</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
</div>
<br>
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<pre class="moz-signature" cols="72">--
***************************
David BRADLEY
Principal
Thermal Energy Systems Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI 53703 USA
P:+1.608.274.2577
F:+1.608.278.1475
<a class="moz-txt-link-abbreviated" href="mailto:d.bradley@tess-inc.com">d.bradley@tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.tess-inc.com">http://www.tess-inc.com</a>
<a class="moz-txt-link-freetext" href="http://www.trnsys.com">http://www.trnsys.com</a></pre>
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