BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS COMBINING LITHIUM-ION AND VRLA BATTERIES www.hoppecke.com HOPPECKE 1
BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS What is an energy storage system? Application: Frequency Response Case Study at HOPPECKE Headquarter Economic observations www.hoppecke.com HOPPECKE 2
BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS What is an energy storage system? Application: Frequency Response Case Study at HOPPECKE Headquarter Economic observations www.hoppecke.com HOPPECKE 3
What is an energy storage system? System which either electrical, thermal or mechanical storing energy in the appropriate form of use Electrical energy storage system store the electrical The applications are most-likely: energy by transforming them into e.g. electro-chemical or electro-mechanical energy The applications are most-likely: Demand response Frequency response Load management Energy time shift Peak Shaving E-Mobility Infrastructure www.hoppecke.com HOPPECKE 4
BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS What is an energy storage system? Application: Frequency Response Case Study at HOPPECKE Headquarter Economic observations www.hoppecke.com HOPPECKE 5
Application: Frequency response www.hoppecke.com HOPPECKE 6
Application: Frequency response Completely stochastic trend of the frequency over time (time series 06/2014) frequency / Hz time www.hoppecke.com HOPPECKE 7
Application: Frequency response Energy Storage Systems are counteracting the frequency trend Acting like a P-Controller (no desired setpoint and measurement of error values) 50,2 50,15 50,1 50,05 Frequency in Hz Envelope (Std.) 50 -120% -100% -80% -60% -40% -20% 0% 20% 40% 60% 80% 100% 120% Envelope (incl. 49,95 Exceeding) 49,9 49,85 49,8 Power in % www.hoppecke.com HOPPECKE 8
Application: Frequency response Requirements to be a tradeable asset in the frequency response market Within 1-9s to 100% power, in Germany within 30s due to the rotation mass from the past An automatic mode acting depending on the frequency and remote control for the Trader Min. required capacity: 1MW / 1MWh and 1.25MVA (Germany) A prequalification showing to be able to discharge at least 4 times 15 mins 100%*P N www.hoppecke.com HOPPECKE 9
Application: Frequency response Quantity of required frequency response 25% 90% of a year <20% und >-20% 20% of installed power 15% Quantity 10% Backup cyclic Backup 5% 0% 95% 90% 85% 80% 75% 70% 65% 60% 55% 50% 45% 40% 35% 30% 25% 20% 15% 10% 5% 0% -5% -10% -15% -20% -25% -30% -35% -40% -45% -50% -55% -60% -65% -70% -75% -80% -85% -90% -95% -100% Share of nominal power Which technologies are suitable? www.hoppecke.com HOPPECKE 10
Application: Frequency response TECHNOLOGY BENCHMARKING Proven Concept 7 6 5 Value-for-Money Energy Density 4 Pb 3 2 Lithium 1 NIMH 0 Wh-Efficiency Cycle Lifetime Ni-Cd Flywheel Safety High C-Rates Best Total Performance Lead Acid+ Li-Ion Lead Acid+ Flywheel Lead Acid+ NaS Lead Acid + Ni-Cd Lead Acid+ NiMH 8 8 8 8 8 6 6 6 6 6 4 4 4 4 4 2 2 2 2 2 0 0 0 0 0 www.hoppecke.com HOPPECKE 11
BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS What is an energy storage system? Application: Frequency Response Case Study at HOPPECKE Headquarter Economic observations www.hoppecke.com HOPPECKE 12
Case Study at HOPPECKE Headquarter Batteries Target voltage: 700 – 1100V Requirement Power / Channell: 500 kW Usable Energy: 500kWh power.com SB Battery Type Lithium NMC 2V 600Ah 3,97 kWh 32er POWER.RACK No Ageing or design marge since the storage will be utilized better by improvements in the SCADA system Design Criteria Utilization 55% Utilization 80 % Efficiency 90% Efficiency 95% 160 Batterytrays 832 Cells (á 16 Cells) Sizing 416S2P 16S10P Voltage: 707,2 – 998,4 V Voltage: 793,6 – 1049,6 V 998,4 kWh nominal 635 kWh nominal www.hoppecke.com HOPPECKE 13
Case Study at HOPPECKE Headquarter TP3: Battery Concept Three Battery strings each of 500kW and approx. 500 kWh usable energy content two strings of valve-regulated Lead Acid Batteries Technical Data per String (Excerpt) Energy (nom.) kWh 1,005 686.4 – 998.4 Voltage Range V Weight kg 29,952 excl. Racks Qty of cells 832 one string of Lithum-Ion Batteries (special fireprotection racks) Technical Data per String (Excerpt) Energy (nom.) kWh 635 793.6 – 1,049.6 Voltage Range V Weight kg 7,680 excl. Racks Qty of cells 2560 www.hoppecke.com HOPPECKE 14
Case Study at HOPPECKE Headquarter TP3: Battery Concept Liquid cooled inverter (IGBT) of the latest technology water.- and dust-tight housing (IP65 – no additional container necessary) Three independent DC Outputs each of 500 kW DC voltage up to 1100 V www.hoppecke.com HOPPECKE 15
Case Study at HOPPECKE Headquarter Impressions www.hoppecke.com HOPPECKE 16
Case Study at HOPPECKE Headquarter Impressions www.hoppecke.com HOPPECKE 17
Case Study at HOPPECKE Headquarter Impressions www.hoppecke.com HOPPECKE 18
Case Study at HOPPECKE Headquarter Impressions www.hoppecke.com HOPPECKE 19
BENEFITS OF HYBRID ENERGY STORAGE SYSTEMS What is an energy storage system? Application: Frequency Response Case Study at HOPPECKE Headquarter Economic observations www.hoppecke.com HOPPECKE 20
ECOMOMIC observations Net Present Value Assumptions 400.000 € Szenario 1: Revenue development 5%/a Net Present Value[ € ] 300.000 € 200.000 € Szenario 2: Revenue development -5%/a VRLA 100.000 € - € Lithium Szenario 3: Revenue equality Szenario 1 Szenario 2 Szenario 3 -100.000 € IRR: 5% -200.000 € -300.000 € Revenue FR: 2.800 € /MW ROI 600.000 € Revenue Szenario 3 400.000 € CAPEX + OPEX 200.000 € • Cost/Revenue[ € ] Business Case FR can be profitable if - € ROI Lithium - Revenue 1 2 3 4 5 6 7 8 9 10 -200.000 € • ROI between 7 and 9 years is accepted +5%/a -400.000 € Jahre ROI VRLA - Revenue -600.000 € • Hybrid-Storages are more economic +5%/a -800.000 € ROI Hybrid PB/FW - -1.000.000 € than only VRLA or only Lithium-Storages Revenue +5%/a -1.200.000 € www.hoppecke.com HOPPECKE 21
Thank you very much. Feel free to contact us here ! www.hoppecke.com www.hoppecke.com HOPPECKE 22
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