On the Way to the Future: DSO 2.0 and Joint Work with TSO

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1 On the Way to the Future: DSO 2.0 and Joint Work with TSO Dr.-Ing. Adolf Schweer European Utility Week 2015 in Vienna, 3-5 November 2015 Mitteldeutsche Netzgesellschaft Strom mbh Magdeburger Straße Halle (Saale)

2 Welcome in the labors of the german Energiewende renewables / last customer usage [%] MITNETZ STROM MITNETZ STROM 30 years in front of Germany German goals load and renewable infeed 7200 MW Load MW Seite 2

3 No further grid reserves left Transformers overloaded Lines overloaded in (n-1)-case Auslastung kleinster Trafo 0 80 % Auslastung kleinster Trafo % Auslastung kleinster Trafo 100 % Transportkapazität im Umspannwerk vollständig ausgelastet < 50% 50% 75% 75% 100% >100 % Seite 3

4 Impacts of the Energiewende* are visible in the North and East of Germany today Local disparities Temporal disparities between energy demand and generation Mitnetz Recovery in own load share Source: ARGE VNB Ost * Energiewende = Energy Turnaround Seite 4

5 Grid- and system security management at DSO and TSO Blue: restoration of supply Red flashing: black out Blackout-danger Full or partial outages Restoration of supply Grid stability at risk Stress operation TSO / DSO security management measures in operation Use of control power Grid stability ensured Generation equals consumption Steady state operation Free markets Ca MW müssen von MITNETZ an 50Hertz abtransportiert werden Seite 5

6 Grid- and system security management at DSO and TSO Blue: restoration of supply Red flashing: black out Blackout-danger Full or partial outages Restoration of supply Grid stability at risk Stress operation TSO / DSO security management measures in operation Use of control power Grid stability ensured Generation equals consumption Steady state operation Free markets Seite 6

7 Discussion of roles: system responsability / risks Centralized control by TSO Data-Hub cascading control TSO-DSO Area generator Zellular grids central zentral decentral dezen tral Seite 7

8 Foundation of the ARGE FNB East and joint work on the NAP (110-kV-Grid-Extension-Plan) NAP 2013 Prognosis for 2023: 44,3 GW 38 TSO-DSO substations km trace 2015 Prognosis for 2025: 38,8 GW Improvements: NOVA Prinziple coincidence PV/Wind Influence of peak shaving under research ARGE der FNB OST. Mitteldeutsche Netzgesellschaft Strom mbh Magdeburger Straße Halle (Saale)

9 Uncoordinated steering of renewables brings risks for system stability Abruf Regelenergie Abruf Regelenergie Vertrag TSO Physik Aufruf Systemsicherheitsmanagement (SSM) Börse aggregator DSO Steuerung nach Marktlage Vertrag heute: 60 GW auf 1,7 Mio. Anlagen Physik Steuerung nach Netzzustand durch z.b. Netzsicherheitsmanagement ON OFF Seite 9

10 ARGE VNB Ost and TSO develop a 10-Points-Programm Ancillary Services + 50HERTZ ARGE der FNB OST. Mitteldeutsche Netzgesellschaft Strom mbh Magdeburger Straße Halle (Saale)

11 Ancillary services as well as market- and grid-related measures Primary control reserve Secondary control reserve Minute reserve supply Reactive power control Control of generating units Operation of compensation resources Switchable and interruptible loads Automatic frequency relays Frequency control Voltage control Short-circuit power Transformer stepping and switchover Black start and islanding potential Commissioning with/without energisation Coordination across grid levels (concepts) Restoring supply Operational management Feed-in management Redispatch / congestion management Operational planning / disconnection planning Reserve power plants Data interchange (energy information network) Interaction between measures needs to be considered! What will be the green share in future? Seite 11

12 20 DSO with potential of reactive power control installierte EE-Leistung HS- bis NS-Ebene (Top 20 VNB Deutschland nach EE-Leistung) 0 MW MW MW MW MW MW MW MW MW MW Westnetz GmbH Bayernwerk AG Avacon AG E.DIS AG Mitteldeutsche Netzgesellschaft mbh Schleswig-Holstein Netz AG EWE NETZ GmbH Netze BW LEW Verteilnetz GmbH TEN Thüringer Energienetze GmbH N-ERGIE Netz GmbH MITNETZ STROM EnergieNetz Mitte GmbH Westfalen Weser Netz AG HSN Magdeburg GmbH WEMAG Netz GmbH ENSO Netz GmbH Pfalzwerke Netz AG Netzgesellschaft Ostwürttemberg GmbH Syna GmbH MITNETZ STROM, Hr. Engelbrecht HS HS/MS MS MS/NS NS Seite 12

13 Status of joint WG voltage control (DSOs/TSO) Basing on the 10 points programme : > Acutal and future reactive control potentia of 110 kv Grid > Development of the future control basing on grid simulations using load and infeed scenarios, and reactive power potential from renewables Aiming at the full use of reactive power possibilties of renewables at 110 kv Grid Seite 13

14 Control of real power coordination of control power Conflicts between market driven steering of control power and local grid constraints f 50,0Hz ÜNB coordination TSO/DSO- Control, aggregators U/I conflicts VNB RLA Solution: Dynamik DSO-permission in the bidding process of control power Seite 14

15 Restoration of supply - System Service in the structural change Energy system yesterday Central production units Energy system tomorrow Centralized and decentralized production units Transmission EHV Distribution HV/MV today Distribution LV Customer Restoration concepts Roles and Priorities (TSO, DSO) Present and future possibilities of DSO Preent three pillars: Voltage from outside (neighbor TSO ); islanding p/st, black start units have to take into account the growing number of decentralized/renewable scources Seite 15

16 Conclusion Cooperation of DSOs and TSO is a must with growing share of volatile infeed Intense and trustful cooperation on arm s length principles Need in developing new technical and organizational solutions Growing need in efforts has to be acknowledged by Regulator The new versions of Energy law have to reflect the new tasks of Grid Operators DSO 2.0 means a more active DSO Energiewende + Cooperation = Success Seite 16

17 Thank you for your attention Mitteldeutsche Netzgesellschaft Strom mbh Magdeburger Straße Halle (Saale)

18 Defined Priority Reactive Power per voltage level Priority Grid level 1 LV/MV Tasks Voltage level within boundaries Q - control decentral central cos φ (P) ind -- 2 MV Busbar Voltage level of MV/ LV cos φ (P) kap QVorgabe 3 HV Voltage control at single lines Q(U) -- 4 HV Q balance 110-kV grid (line protection) Q(U) Q(U) Q Vorgabe 5 HV Optimal 110-kV load-flow Q(U) Q(U) Q Vorgabe Interface TSO 6 EHV/HV Static voltage control EHV/HV grid -- Q(U). Q vorgabe Seite 18