Last- und Einspeisemanagement in der Praxis TSOs needs for Generation- and Demand Flexibility Deutsch-Türkisches Innovationsforum Energie 20./21. November 2013 18.11.2013 Dr. Klaus von Sengbusch
50Hertz: a Portrait Transmission System Operator 50Hertz Ensures the supply of electricity to over 18 million people in Germany System operator for Berlin, Brandenburg, Hamburg, Mecklenburg-Western Pomerania, Saxony, Saxony-Anhalt and Thuringia; active in nine German federal states Responsible for the operation, maintenance and expansion of the "Electricity Highways (220 kv and 380 kv) Hamburg Berlin 2
RES Development in Germany RES = Renewable Energy Source 2000 2006 2012 Wind Photovoltaic Biomass Area proportional to installed capacity Quellen: 50HertzT, TenneT, Amprion, TransnetBW, Google Earth August 2013 Nr. of Installations: ~ 1,3 Mio. Capacity > 72 GW Energy(2012) ~ 135 TWh (~23%) 3
Grid Congestion and Redispatch Redispatch New year 2012 10.000 Decrease Power 8.000 6.000 4.000 Bottleneck 2.000 0 26 2 9 12/2011 1/2012 Increase Power Source: Szenariorechnung IAEW, RWTH Aachen 2013 Power plants relevant for Redispatch Reserve power plants Ban on shutdowns Windhochrechnung 50Hertz Redispatch Maßnahmen nach 13(2) EnWG 4
Photovoltaic (PV) Forecasting Situation at beginning of April 2013 - High errors of day-ahead forecast of PV feed-in due to high fog weather situations (in Germany up to 8800 MW) 20 GW 15 10 5 Day-ahead forecast Final ID-forecast Real-time projection Open positions 50Hertz 0 41367 41368 41369 41370 PV day-ahead forecast can be very inaccurate at special weather situations 5
Intraday Prices Situation at beginning of April 2013 - Extreme price peaks in ID-market due to short term changes of ID-PV-forecasts 400,0 /MWh 300,0 200,0 ID-Min ID-Max ID-Average Day-ahead 100,0,0 d-00 d-00 d-00 d-00 Large day-ahead forecast errors and changing ID-forecasts lead to extreme ID-prices 6
0:00 1:00 2:00 3:00 4:00 5:00 6:00 7:00 8:00 9:00 10:00 11:00 12:00 13:00 14:00 15:00 16:00 17:00 18:00 19:00 20:00 21:00 22:00 23:00 Activated Power [MW] Control Power Activation in Germany 5 th April 2013 ACE Peaks 6000 control capability not maintained 5000 4000 3000 control capability maintained 2000 1000 0 Area Control Error (ACE) IGCC imbalance netting Secondary control reserve minute reserve Emergency reserves actual limit of German control capability - High system imbalances during daytime - Control capability maintained nearly continuously by activation of emergency reserves - But: Some small peaks of limited height not covered by control power 7
Tools for Ensuring System Security Balancing Day Ahead Market volume 2012: ~300 TWh Congestion Management Capacity Auctions implicit and explicit auctions of capacity with Germany and Austria as one bidding area Intraday Market volume 2012: ~18 TWh Control Power Market ~ +/-5 GW open for generation and demand Redispatch (conv. generation) 50Hertz: 2-4 TWh/a not limited to Germany Demand Response Market auction for up to 3 GW started July 2013 currently procured (Nov. 2013): ~800 MW Emergency Measures OTC trades, reserves of neighboring TSOs, curtailment of RES, Curtailment of RES 50Hertz: 50-200 GWh/a Operated by TSOs 8
Conclusions New challenges due to continuous RES-extension drive adaption of tools to ensure system security; Balancing and congestion management are main fields of operation Balancing - Liquid and flexible intraday market is the key element to avoid massive increase of control power - Main future challenge: - Adaption of tools for better integration of demand and RES Congestion management - Leads to increased complexity of system operation - Main future challenges: - Ensure sufficient redispatch potential - International coordination of redispatch measures - Grid extension! 9
Vielen Dank für Ihre Aufmerksamkeit. Many thanks for your attention. Dr. Klaus von Sengbusch 50Hertz Transmission GmbH Eichenstraße 3A 12435 Berlin Phone: 030-5150-2610 email: klaus.vonsengbusch@50hertz.com 10
Intraday Market in Germany h-products since 25.09.2006 h-products since 29.03.2011 ¼h- & h-products since 14.12.2011 OTC ¼-Products t - 75 min T - 45 min t - 15 min 11
Demand Response Market in Germany Product focused on industrial load - Monthly auction of up to 3 GW - 1-minute-average values of sheddable load must stay in the range of 100% to 120% of the contracted value - Power provision has to be confirmed day ahead; Non-provision allowed at 4 days of a month - Fixed price for power provision: 2500 /MW per month - Auction: Bids for energy price with price gap of 400 /MWh Loads can choose between different product types - 15min shedding up to 1h per day, 4 times a week - 4h shedding once a week - 8h shedding once within 14 days Experiences - First Auction in June for July 2013 - ~800MW procured in November auction 12