Last- und Einspeisemanagement in der Praxis TSOs needs for Generation- and Demand Flexibility

Transcription

1 Last- und Einspeisemanagement in der Praxis TSOs needs for Generation- and Demand Flexibility Deutsch-Türkisches Innovationsforum Energie 20./21. November Dr. Klaus von Sengbusch

2 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

3 RES Development in Germany RES = Renewable Energy Source 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

4 Grid Congestion and Redispatch Redispatch New year Decrease Power Bottleneck /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

5 Photovoltaic (PV) Forecasting Situation at beginning of April High errors of day-ahead forecast of PV feed-in due to high fog weather situations (in Germany up to 8800 MW) 20 GW Day-ahead forecast Final ID-forecast Real-time projection Open positions 50Hertz PV day-ahead forecast can be very inaccurate at special weather situations 5

6 Intraday Prices Situation at beginning of April 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

7 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 control capability maintained 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

8 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: GWh/a Operated by TSOs 8

9 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

10 Vielen Dank für Ihre Aufmerksamkeit. Many thanks for your attention. Dr. Klaus von Sengbusch 50Hertz Transmission GmbH Eichenstraße 3A Berlin Phone:

11 Intraday Market in Germany h-products since h-products since ¼h- & h-products since OTC ¼-Products t - 75 min T - 45 min t - 15 min 11

12 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 ~800MW procured in November auction 12