1. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 GRID SECURITY MANAGEMENT – BASIS FOR SECURE OPERATION OF THE DISTRIBUTION GRID OF ENVIAM Dr. Adolf SCHWEER Chief executive officer envia Netzservice GmbH Adolf.schweer@envia-nsg.de

2. Frankfurt (Germany), 6-9 June 2011 Some words over enviaM and the characteristics in the enviaM - area Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332  one of the lagest utilities in Eastern Germany  coined of rural areas  strong growth on renew- able ernergy  in some sections of supply grids, power generation > maximum load

3. Frankfurt (Germany), 6-9 June 2011 max loadmin load Development and forcast of power generation in the supply network of enviaM Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 infeed above max load further increase > three-times load (Wind, Solar, Biomass)

4. Frankfurt (Germany), 6-9 June 2011  “feed-in management” according to §11 EEG-2009, to keep regional grid bottlenecks under control  “system security management” according to §13 EnWG, to equalize the power balance in the transmission system  consideration of the order of rank of plants which can be switched off  beyond that are to be considered far aspects (economic/environmental effects) Requirements on the “Network and System Security Management” Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332

5. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 Structure of the “Network and System Security Management” of enviaM

6. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 Information channels of the “Network and System Security Management” http://www.envia-netz.de

7. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 enviaM – connections to TSO, dispersed generation an municipalities 50HzT enviaM SW ~ ~ ~ Controlled Generation TSOs DSO s Ripple-contro l 46 Muncipalities

8. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 Example for a feed-in power following a call for system security measures

9. Frankfurt (Germany), 6-9 June 2011 Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 GRID SECURITY MANAGEMENT information overview in the Internet http://www.envia-netz.de

10. Frankfurt (Germany), 6-9 June 2011  a further constant increase in incidents is to be expected  the receipt of the grid and system security has highest priority, now and in the future  more urgently than before is an functional “Network and System Security Management” necessary Summary Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332

11. Frankfurt (Germany), 6-9 June 2011 Participants: Thanks for your attention. Dr. Adolf Schweer – Germany – Main Session – Paper No. 0332 Prof. Dr. Wolfgang GALLAS envia Verteilnetz GmbH Wolfgang.Gallas@envia-netz.de Dirk HOLLMACH envia Netzservice GmbH Dirk.Hollmach@envia-nsg.de Dr. Hans ROMAN envia Verteilnetz GmbH Hans.Roman@web.de