AND THE SUN STARTED SHINING
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Transcript of AND THE SUN STARTED SHINING
The first school in SLOVENIA with a solar power plant
AND THE SUN STARTED SHINING
Authors: Janez TrohaIstok Lenarčič
Mentors: Valentin Peternel Mirja Mrovlje Pečnik
March 2008
AND THE SUN SHINES
Our solar power
plant is quite
powerful. It
produces a
maximum of
25,16 kWof electrical
energy. That’s
enough to rent it
out into Elektro
Ljubljana’s power
network.
USAGE1We use our power
plant to educate:
Solar technology
Information tech.
Development
All that thanks to
the fact that we
have a smaller,
3,74kW polygon
exclusively meant
to educate our
students.
USAGE2We use it to
educate our
students about
setting up and
planning solar
power modules
and its systems.
We are proud to be
the first in
Slovenia to
educate a school
program called
SOLAR TECHNICIAN
USAGE3The second, and
bigger 21,42kW
polygon is being
used to distribute
electrical energy to
Elektro Ljubljana’s
power network.
So far ,we have
produced a total of
9 437 kWh of energy
or
we have reduced
CO2 emissions for
6 606 kg
Which is enough for
5 895 hours of dish washing
20 132 uses of hair dryer for 15 minutes
3 431 hours of laundry washing
Collecting
We chose solar
power modules
with best
utilisation rate
MONOCRYSTALLI
NE TYPE
12 - 16%
efficiency (170w)
per cell
500-1000 W/m2
170W230V
Solar power cell
A solar cell or
photovoltaic
cell is a device
that converts
solar energy into
electricity by the
photovoltaic
effect.
We chose the
company Kon
Tiki d.o.o. to set
up our power
modules.
Electrical inverter
Converts direct
current (DC) to
alternating current
(AC) and
synchronises it
with Elektro
Ljubljana’s power
network.
Current products
on the market offer
all kinds of
integrated
protection circuits
and do the
synchronising part
as well.
Electricity meter
Measures
amount of
electrical
energy, that was
sent out into
electrical power
network.
(Project realization)
How did we do it?
Project realization
Project
realization began
with planning the
whole system,
which among
other things
includes picking
the right spot for
installation of our
solar power
modules.
Setting up our solar power plant
Separative measurement place
Inverters are
plugged to the
public electrical
network trough the
so called “separative
measurement
place”.
Separative
measurement place
ensures a reliable
separation of
generator and public
electrical network,
which in case of
malfunctions
prevents material
damage caused by
the power network
or vice versa.
Conclusion
Solar and other
alternative power
sources certainly
are our future.
It's up to us to
replace
environmental-
unfriendly power
sources as soon as
possible.
Let's keep our
nature, that is
hosting us on this
beautiful planet
clean!
1 Zdravko Žalar; Sončna elektrarna SŠTS Šiška; http://www.s-ssts.lj.si ; SŠTS; Ljubljana, 2008,
2 Zdravko Žalar; Predstavitev - Projekt ‘Omrežna sončna elektrarna 26kWp’’; SŠTS Šiška & Elektro Ljubljana; Ljubljana, februar 2008,
3 Gašper Škarja; Tehnični opis MFE SŠTS Šiška, Kon Tiki Solar; Kamnik; Ljubljana, 2007, 4 Zdravko Žalar; Fotografije - Projekt ‘’Omrežna sončna elektrarna SŠTS Šiška’’; SŠTS;
Ljubljana, 2007, 5 Valentin Peternel; Fotografije - Projekt ‘’Omrežna sončna elektrarna SŠTS Šiška’’; SŠTS;
Ljubljana, 2008, 6 Janez Troha; Ilustracije; Ljubljana, 2008, 7 Borut Bavčar; Pred desetletji strugarji, zdaj solarni tehniki, mehatroniki; DELO;
Ljubljana, 2007, 8 Elektro Ljubljana; Elektro Ljubljana in Srednja šola tehniških strok Šiška v Ljubljani sta
zgleden primer javno-zasebnega partnerstva; Finance; Ljubljana, 2007, 9 Kon Tiki Solar; Katalog 2003 – Solarni sistemi Kon Tiki Solar, Kon Tiki Solar; Kamnik;
Ljubljana, 2003, 10 Elektro Ljubljana; Zelena energija / Sončne oz. fotovoltaične elektrarne / SE na Litostrojski
cesti 51; http://www.elektro-ljubljana.si/ ; Elektro Ljubljana; Ljubljana, 2008, 11 Bojan Kovač; Srednja šola tehniških strok SŠTS Šiška praznuje 60 let delovanja; Svet
elektronike; Ljubljana, november 2007, 12 Bojan Grobovšek; Solarni sistemi za ogrevanje in pripravo tople vode v NEH in PH;
http://gcs.gi-zrmk.si/Svetovanje/Clanki/Grobovsek/PT237.htm ; Gradbeni center Slovenije; Ljubljana, 2008,
13 Wikipedia; Electricity meter; http://en.wikipedia.org/wiki/KWh_meter ; Wikipedia, 2008,
Sources and literature