European Aspects of Wind Energy Integration into Liberalised Markets Euro-CASE Workshop, 14 November 2003 Düsseldorf, Germany

Transcription

1 European Aspects of Wind Energy Integration into Liberalised Markets Euro-CASE Workshop, 14 November 2003 Matthias Luther E.ON Netz GmbH, Bayreuth 1

2 European Aspects of Wind Energy Integration into Liberalised Markets Presentation Topics Situation of wind energy in Germany Aspects concerning network planning and control Technical limits and solutions UCTE activities Conclusions 2

3 Euro-CASE Workshop, 14 November 2003 Transmission System Operators in Germany Hamburg E.ON Netz 4 Transmission System Operators (TSO) approx. 900 Distribution System Operators (DSO) Berlin Dortmund Vattenfall Europe Transm. approx. 42 mill. customers connected to power grids Düsseldorf RWE Transp. Bayreuth Negotiated Third Party Access (NTPA) common regime Karlsruhe EnBW Transp. management unbundling of utilities and grid-branches Munich 3

4 Present status of legal framework for windpower in Germany Renewable Energy Act (EEG) generation from renewables: guaranteed connection priority consumption of electricity minimum payment Windpower On-shore Windpower Off-shore 6,8 ct/kwh fed into grid at least till ,6 ct/kwh fed into grid at least till

5 Installed wind generation capacity in Europe total: 23,056 MW (as of December 2002) others 2% Sweden 1% 328 MW France 1% 145 MW Portugal 1% 194 MW Greece 1% 276 MW UK 2% 552 MW Italy 3% 785 MW Netherlands 3% 688 MW Spain 21% 4,830 MW Denmark 12% 2,880 MW Germany 53% 12,001 MW 5 source: AWEA-EWEA - March 3, 2003

6 Wind energy development in Germany Installed Capacity, MW Onshore and Offshore Onshore Year 6 source: Deutsches Windenergieinstitut

7 Euro-CASE Workshop, 14 November 2003 Installed wind capacity in Germany (as of August 2003) Hamburg E.ON Netz Berlin Dortmund Vattenfall Europe Transm. Düsseldorf RWE Transp. Bayreuth Karlsruhe EnBW Transp. Munich 7 E.ON Netz: VE Transm.: RWE Transp.: ENBW Transp.: Total: 5800 MW 4800 MW 2300 MW 200 MW MW

8 High specific wind generation in the North 1/9 of German Area Schleswig Holstein 1,900 MW Lower Saxonia 3,300 MW E.ON Netz 8 but nearly 1/2 of installed capacity as of August 2003 E.ON Netz 5,800 MW Germany 13,100 MW

9 Wind goes offshore - applied projects in the North Sea as of November 2002 source : Sonne, Wind und Wärme 9

10 Offshore claims in the North Sea Present status: MW connection inquiries 3 widespread project regions under discussion: route bundling Nordsee DK Project region Route for connection* Grid connection* *Example for illustration NL 10

11 Applied offshore projects in the Baltic Sea Adlergrund DK Kriegers Flak 350 MW Arkona- Becken 750 MW 850 MW MW Fehmarn westl. Ostsee 150 MW Rügen Pommersche Bucht 150 MW Schleswig- Holstein Sky 2000 Bentwisch Lubmin Usedom Mecklenburg- Vorpommern PL Hamburg size: ( ) MW total: approx MW time horizon: > 2010 (until 2010 approx MW) 11 source:

12 Study results: offshore wind affects transit capacities Offshore infeed DK Polit. target: MW until Transit capacities At present 1400 Estimation for 2010, at strong wind, without grid improvements NL 0 D 12

13 Weekly wind power infeed for E.ON Netz (May 2001) capacity, MW Mo Tu We Th Fr Sa Su week starting with

14 Total load versus wind power infeed Consumption and feeding of wind energy in the E.ON-Netz region in November 2001 Total load [MW] 18,000 16,000 14,000 12,000 10,000 8,000 6,000 4,000 2, Total load Wind power infeed ,500 4,000 3,500 3,000 2,500 2,000 1,500 1, Wind power infeed0 [MW] Stochastic wind generation comprises temporarily 90% of installed power 14

15 Principle structure of wind power prediction Main Control Centre German Meteorology Service Wind forecast two days ahead Actual value of wind power Modem Infeed Infeed forecast forecast Algorithm Conversion of wind speed on hub altitude Calculation between interpolation points 15 Summing up Archiving

16 Technical limits considering wind power integration thermal overload of electrical equipment loss of voltage stability loss of frequency stability Main task of the transmission system operator: Provision of secure system performance without any reduction of service reliability 16

17 Load flow and wind power infeed G 380/220 kv G 380/220 kv net net 110 kv net 110 kv net distribution level distribution level load Load without wind 17 wind surplus

18 Additional requirements: reactive power compensation to prevent a voltage collapse U/Un [%] 100% t [msec] t [msec] Trip Under voltage- protection 90% Additional requirements for WECS 80% 70% 60% 50% No additional requirements for WECS Blackout USA: Initiating Event: Voltage Recording EPRI 14. August : t [sec] Requirements to wind generators Netzanschlußregeln 18

19 Frequency stability additional requirements to wind converters dynamic simulation of the UCTE-system after a 3-phase-fault in the northern part of the E.ON 380-kV-system - stationary frequency deviation of app.160 mhz outage of app MW installed wind energy fast active power return (5 s after fault clearing) 100 mhz 0 mhz Additional requirements for WECS -100 mhz -200 mhz No additional requirements for WECS -300 mhz -400 mhz t [sec]

20 Wind needs infrastructure cost figures for the control area of E.ON Netz Connection,transport and distribution of wind power e. g. for E.ON Netz: up to km additional EHV/HV routes till 2016 (550 Mio cumulated) balancing and reserve power for stable grid operation e. g. for E.ON Netz: up to MW to contract in 2016 (850 Mio /a in 2016) 20

21 UCTE activities: Network Wind Power permanent overview/country reports with respect to the development of wind energy evaluation of consequences on the overall system performance (i.e. system security, reliability, dynamic aspects) setting up requirements for wind generators Members: REE, GRTN, MAVIR Rt., HEP, TenneT, APG, Eltra, E.ON Netz 21

22 Conclusions: System Aspects of Wind Energy Integration network capacities measures for network improvements dynamic stability requirements to wind convertes provision of balance power congestion management costs and competition effects on transit flows 22