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FIELD TEST OF GRID ORIENTED MICRO CHP UNITS FOR DOMESTIC ENERGY SUPPLY
Dipl.- Wirtsch. Ing. Arne DammaschProf. Dr.-Ing. Michael Kurrat
Frankfurt (Germany), 6-9 June 2011
phase 1: conception and development of a schedule planning algorithm for a grid oriented
operation mode of micro CHP units
phase 2: computer-based simulation of a virtual power plant consisting of micro CHP units is
implemented test starts on the micro CHP unit at the TU Braunschweig and further improvements
of the control interface are accomplished
phase 3: (since January 2011) testing and validation of simulation results within a field trial
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Project phases
Frankfurt (Germany), 6-9 June 2011
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Grid oriented operation mode of micro CHP units
elec
tric
al lo
ad
time
grid load without CHP grid load with CHP
Frankfurt (Germany), 6-9 June 2011
phase 1: conception and development of a schedule planning algorithm for a grid oriented
operation mode of micro CHP units
phase 2: computer-based simulation of a virtual power plant consisting of micro CHP units is
implemented test starts on the micro CHP unit at the TU Braunschweig and further improvements
of the control interface are accomplished
phase 3: (since January 2011) testing and validation of simulation results within a field trial
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Project phases
Frankfurt (Germany), 6-9 June 2011
simulated settlement with 30 micro CHP units and 100 house connections
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Simulation results
1micro CHP
unit
2micro CHP
units
5micro CHP
units
10micro CHP
units
15micro CHP
units
20micro CHP
units
25micro CHP
units
30micro CHP
units
ele
ctri
cal lo
ad
in
kW
time in ¼ h
resulting residential load
original residential load
Frankfurt (Germany), 6-9 June 2011
phase 1: conception and development of a schedule planning algorithm for a grid oriented
operation mode of micro CHP units
phase 2: computer-based simulation of a virtual power plant consisting of micro CHP units is
implemented test starts on the micro CHP unit at the TU Braunschweig and further improvements
of the control interface are accomplished
phase 3: (since January 2011) testing and validation of simulation results within a field trial
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Project phases
Frankfurt (Germany), 6-9 June 2011
two apartment buildings in Braunschweig /Germany , each is equipped with a micro CHP unit
micro CHP unit: EcoPower e4.7 (4.7 kWel / 12.5 kWth ) thermal storage tank (1,000 liter) existing boiler remains as a peak load boiler
measurement and control system: central schedule management data aquisition for one building: 18 temperature sensors
4 fluid-flow meters1 control unit per micro CHP unit1 UMTS-Router
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Information about the field test
daily amount of logged datafor one building:198,720 measured values!
Frankfurt (Germany), 6-9 June 2011
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Installation and start of the field test
Braunschweig 11/23/2010
and01/04/2011
peak load boiler
micro CHP unit
thermal storage
tank
Frankfurt (Germany), 6-9 June 2011
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Structure of the heating-system
the
rma
l s
tora
ge
peak load
boiler
micro CHP unit
heating circut
hot water
measurement hardware
control unit
fluid-flow metertemperature sensordata interconnectionheating supplyheating return
Frankfurt (Germany), 6-9 June 2011
each micro CHP unit is equipped with an UMTS-router fixed IP-address secure VPN-connection centralized schedule management
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Information infrastructure
Zu r An z e ig e wird d e r Qu ic k T ime ™ De k o mp re s s o r „Gra fi k e n “
b e n ö tig t.
VPN AreaVPNDSL/LAN
VPNUMTS
VPN
UMTS
VPNUMTS
Sp
eic
her
SPLK BHKWHeiz-Kreislauf
Warm-Wasser
Messtechnik
Steuerkarte
Sp
eic
her
SPLK BHKWHeiz-Kreislauf
Warm-Wasser
Messtechnik
Steuerkarte
Sp
eic
her
SPLK BHKWHeiz-Kreislauf
Warm-Wasser
Messtechnik
Steuerkarte
centralized schedule management
Frankfurt (Germany), 6-9 June 2011
Arne Dammasch – Germany – Main Session 4 – Paper 1080
0
5
10
15
20
25
Le
istu
ng
in
kW
Heizlast Februar
-10
0
10
20
30
Tem
per
atu
r in
°C
Zeitverlauf
Thermal load and temperature in February 2011
time
tem
pera
ture
in °
Cth
erm
al lo
ad
in k
W
Frankfurt (Germany), 6-9 June 2011
the measurement system acquires data with high resolution quality measurement intervall = 10 seconds
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Thermal load and hot water load forFebruary 8, 2011
0
2
4
6
8
10
12
Le
istu
ng
in
kW
Heizlast 8. Februar
0
10
20
30
40
50
60
Le
istu
ng
in
kW
Warmwasserlast 8. Februar
therm
al lo
ad
in k
W
therm
al lo
ad
in k
W
time time
thermal load hot water load
Frankfurt (Germany), 6-9 June 2011
forecast of thermal andgrid load
based on historically data
generation of aday-ahead-schedulefor each micro CHP unit of
the virtual power plant
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Load forecast and schedule management
0:15 3:30 6:45 10:0013:1516:3019:4523:00 2:15 5:30 8:45 12:0015:1518:3021:450
5
10
15
20
25
Elektrischer Siedlungslastgang 02.02.2011
Zeit [hh.mm]
Lei
stu
ng
[kW
]
Thermischer Lastgang 02.02.2011
Fahrplan BHKW (elektrisch)
load
in
kW
time in hh:mm
scheduled feed-in of the micro CHP unit (February 4, 2011) grid load (February 2, 2011)thermal load (February 2, 2011)
Frankfurt (Germany), 6-9 June 2011
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Quality of the load forecast
0:15 5:15 10:15 15:15 20:15 1:15 6:15 11:15 16:15 21:150
5
10
15
20
25
thermal load
Thermischer Lastgang 02.02.2011
Thermischer Lastgang 04.02.2011
time in hh:mmlo
ad i
n k
W0:15 5:15 10:15 15:15 20:15 1:15 6:15 11:15 16:15 21:15
0
5
10
15
20
25
30
grid load
Elektrischer Siedlungslastgang 02.02.2011
Elektrischer Siedlungslastgang 04.02.2011
time in hh:mm
load
in
kW
thermal load (February 2, 2011)thermal load (February 4, 2011)
load forecast is not one hundred percent accurate
grid load (February 2, 2011)grid load (February 4, 2011)
Frankfurt (Germany), 6-9 June 2011
despite less accuracy in the
load forecast… results only in minor deviations
from the schedule
results:
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Quality of the schedule
0:15 3:30 6:45 10:0013:1516:3019:4523:00 2:15 5:30 8:45 12:0015:1518:3021:450
5
10
15
20
25
30
Elektrischer Siedlungslastgang 04.02.2011
time in hh:mm
load
in
kW
Fahrplan BHKW elektrisch real
Fahrplan BHKW (elektrisch)Geglätteter Siedlungslastgang 04.02.2011
DPd -11.22%
Dsd -8.47%
DPd: change of peak loadDsd: change of peak spread
real feed-in of the micro CHP unitreal grid load without CHPreal grid load with CHPinitial CHP schedule
Frankfurt (Germany), 6-9 June 2011
grid oriented operation mode can be realized
load forecast directly effects the quality of the operation schedule
optimization of the schedule generation algorithm
development of better load forecasting systems
integration of electrical storage systems
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Conclusion
Outlook
Frankfurt (Germany), 6-9 June 2011
Dipl.-Wirtsch.-Ing. Arne DammaschWorking Group Energy Systems
Technische Universität Braunschweig
Institute for High Voltage Technology and Electrical Power Systems – eleniaSchleinitzstraße 23 | 38106 Braunschweig | Germany
Email: [email protected]
Arne Dammasch – Germany – Main Session 4 – Paper 1080
Thank you!
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