Auf dem Weg zur Energie-Region+: Konkretisierung weiterer energetischer Maßnahmen im Aller-Leine-Tal

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1 Auf dem Weg zur Energie-Region+: Konkretisierung weiterer energetischer Maßnahmen im Aller-Leine-Tal Herausforderungen und Chancen II: Die Rolle der Speichertechnologie im ALT

2 Verwaltung: Walsrode Fertigung : Rethem Softwareentwicklung: Minden

3 Our History 1988 Krogmann 50 kw Pitch Control, Thyristor Converter 1990 NEW 100 Control and IGBT Converter 1992 MADE 250 kw Softstarter 1993 WindWorld 500 kw Partial Load Converter 1994 DEWIND 500 kw Partial Load Converter 1995 WindWorld750 kw Converter 1996 Frisia 750 kw Converter and Control 1999 Frisia 850 kw Converter, Control and Pitch 2002 Vensys 1200 kw Converter, Control and Pitch 2003 WinWind 3 MW Control and Pitch 2005 Goldwind 1.5 MW Converter and Control and Pitch 2006 Aerodyn 1.5 MW Control System for Different Turbines MW Direct Drive Control, Converter and Pitch MW Hybrid Control, Converter and Pitch MW Direct Drive Converter and Pitch MW Offshore Converter, Control and Pitch MWh Storage Converter, Control, SCADA kwh UPS Load Flow Management

4 Electrical power production - One week in Germany Mittl. Verbrauch Aller/Leinetal: 30MW Inst. Windleistung ca. 80MW

5 2050: 80% average renuable energy in Germany? Estimation EON

6 Speicherung Zentral oder Dezentral? Zentral: Entlastung der Transportnetze Dezentral : Bessere Nutzung von Ausgleichseffekten

7 Speicher für elektrische Energie Kurzzeitspeicher Pumpspeicher Druckluft Wasserstoff Thermische Speicher Batterien

8 Short time energy storage systems SuperCap Super cond coil Fly wheel Backup time 0.2 2s 1-20s s Energy density kws/kg Power kw Lifetime Cycles Efficiency % Stand by loss % / h 0,1% 50% 10% Cost/kWh 20t 100t 1000

9 Pumped water storage 85 TWh potential in Norway and Sweden 0.5kWh/m³ I N S T A L L A T I O N I N G E R M A N Y : 31 P L A N T S / M W / M W H / 6 5 % E F F I C I E N C Y

10 Source: EON

11 Mechanische Speicher? 20 t Beton in Windkraftanlage => 2 kwh Felsblock 10*10*10*m³ * 10m => 50kWh Felsblock 100*100*100*m³ * 100m => 500MWh Einen Eimer Wasser auf den Mount Everest tragen? 0.2kWh Pumpspeicherwerk Atdorf (in Planung) m³ 600m Fallhöhe MWh E = m * g * H

12 Compressed air 2 kwh/m³ Wirkungsgrad: Germany FREQCON GmbH

13 Hydrogen Gas turbine Fuel cell Energy density kwh/m³ Efficiency %

14 Thermal storage

15 Stromwärmepumpe und Warmwasserspeicher für Nahwärmeversorgung Wirkungsgrad Wärmepumpe 200%.300% Speicher und Transportverluste 20% => ges. Wirkungsgrad 160%...240% Vergleich Power to Gas: Strom zu Gas : 40% Transport und Verbrennung 80% Ges. Wirkungsgrad => 32%

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17 Lithium Iron battery 3,2V, 1000Ah 125kWh/ m ³ 150 /kwh 3.2kWh = 25L

18 Pumped -storage hydro hydrogen Compre ssed air Therma l storage Redox flow battery Lithium battery Zink-air battery Backup time 1 10h h 1..10h 2.40h 10.h h 2h 500h Power MW (0.5) Lifetime y >50 (3) Energy density kwh/m³ 0.5 (200m) 500 /2300 (200 bar/ liq) 2 (70bar) 150 (400 C) 40 (Br/S) (2500) Efficiency % Stand by loss % / h Invest /MWh Storage Cost /MWh 70 < <0,1 <0,1 1 1 <0.1 <0.1 < t 500t 300t 300t 175t 250t 75t <50

19 Lithium + ZnO -Hoher Wirkungsgrad (>95%) -hohe Energiedichte -Kosteneffektiv -geringe Umweltbelastung -großes Entwicklungspotential (2.500kWh/m³)

20 Small scale integration of battery storage (1 30kWh) Solar panels Battery vehicle Electric grid and gas supply Battery and micro BHKW

21 1MW / 1MWh

22 5MW/10MWh energy storage for wind farm integration and Microgrid

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24 Benefit to the grid Reduction of power fluctuations Grid frequency stablilisation Reactive power compensation Grid voltage stabilisation Voltage Dip support (LVRT) Active harmonic compensation

25 5MW/10MWh Energy storage wind farm application

26 Energy Storage Projects: 5MW/10MWh 2MW/400kWh 3MW/200kWh 3MW/3MWh 5MW Energy storage wind farm application Battery storage system integrated in WT Battery storage system integrated in WT Battery storage system integrated in WT Microgrid system with 1.5MW WT and 2.3MW solar 1 MW/4 MWh Island grid system with solar and diesel generator

27 We can fit 10 Batterys into 1 drawer and 10 drawers into 1 cabinet 10 of these cabinets we control and monitor with just ONE control unit Data base

28 Active balancing: we use high efficient switched mode power supplys instead of dump resistors to balance the cells 90% less power dissipation against passive balancing Less requirements of selecting cells to same capacity Less cooling of cabinets required Higher power density Lower battery temperature Balancing can already start during main charging cycle Reduction of total charging time up to 50% Support of low capacit cells during discharge cycle Increase total bank capacity by 5%

29 Power flow control

30 wind turbine with integrated energy stroage Up to 10MWh inside the tower Same converter for battery and turbine

31 Wind Turbine with Integrated Battery Storage Converter Converter Grid Generator Aux. supply Battery

32 Wind Turbine with Integrated Battery Storage Converter Converter Grid Generator Aux. supply Battery

33 Wind Turbine with Integrated Battery Storage Converter Converter Grid Generator Aux. supply Battery

34 Energiespeicher in WEA B B 10400

35 28 Batterieschränke 28 * H=2600 B=600 T= * H=200 B=500 T =800 34* H=181 B=116 T =46 28 * 12 * 34 = Akkus 90Ah/3.2V = 3290kWh

36 Wo und wofür macht Energiespeicherung zur Zeit Sinn? Netzunterstützung Frequenzregelung Sekundärreserve Netzfehlerunterstützung Spannungsregelung Lastspitzenreduzierung und Lastflussteuerung für Industrie Nahwärmeversorgung mit elektrischer Wärmepumpe Integration von Energiespeichern in WEA und Solaranlagen Energiespeicherung in großem Masstab 10Jahre+

37 Thank you for your attention