Innovations in the Transmission System

Transcription

1 Innovations in the Transmission System as a response to challenges related to the Energiewende Development of Transmission Grids in the Context of the Energiewende Berlin, Dr. Johannes Henkel

2 Three exemplary Innovations 1. WindNODE Flexibility Platform 2. International Grid Control Cooperation 3. Innovations in System Operation Innovations in the Transmission System Dr. Johannes Henkel 2 / 17

3 WindNODE Flexibility Platform

4 Grid Congestion and Redispatch Grid Congestion Redispatch Reduce PP output Grid congestion Increase PP output Source: Scenario calculation IAEW, RWTH Aachen 2013 Wind, Redispatch, Curtailment in MW Power Plants relevant for Redispatch Grid Reserve PP not allowed to be taken from grid Wind feed-in Redispatch RES Curtailment Innovations in the Transmission System Dr. Johannes Henkel 4 / 17

5 Distinction of congestion management measures in germany: Redispatch and RES curtailment Redispatch Legal basis: 13 Abs. 1 EnWG Units > 10MW are obliged to report their redispatch potential Flexibility request as a result of an optimization process Energetic and financial compensation of balancing groups RES-curtailment (Einspeisemanagement) Legal basis: 13 Abs. 2 EnWG Demand for reduction estimated for each node - Reductions of feed-in executed by DSOs No energetic or financial compensation of balancing groups Uncertainty about actual effect Balancing group deviations compensated by balancing power Innovations in the Transmission System Dr. Johannes Henkel 5 / 17

6 Concept of the Flexibility Platform [ / MWh] Conventional Power Plants and large Storage new Flexibility providers Mainly wind generators Redispatch 13 Abs. 1 EnWG In order to reduce RES curtailment additional flexibility sources will be incorporated in the redisaptch process. Therefore new processes and communication structures (between grid operators and between flexibility provider and grid operator) are needed WindNODE Flexibility Platform RES curtailment 13 Abs. 2 EnWG Innovations in the Transmission System Dr. Johannes Henkel 6 / 17

7 International Grid Control Cooperation

8 Grid Control Cooperation Avoiding Counteractive Balancing National GCC (Module 1-4) IGCC (Module 1 Imbalance Netting) Module 1 - IGCC: Avoid Counteractivation Module 2: Common Dimensioning Module 3: Common Procurement of capacity Module 4 National GCC: Activation based on common Merit Order List RTE (4/2016) Elia (10/2012) Energinet.dk TenneT (02/2012) (10/2011) Swissgrid (03/2012) Germany (since 2008) CEPS (06/2012) APG (04/2014) Innovations in the Transmission System Dr. Johannes Henkel 8 / 17

9 Counteractivation of afrr There are time periods when the afrr-demand of one LFC Area is positive (power deficit) while the demand of another LFC Area is negative (excess of power). Without cooperation, counteracting afrr is activated power deficit: 100 MW afrr activation: 100 MW power excess: 50 MW afrr activation: -50 MW Deficit Excess Innovations in the Transmission System Dr. Johannes Henkel 9 / 17

10 Imbalance Netting in the IGCC The IGCC aims at the reduction of this counteractivation by netting of afrr demands in real-time, considering the relevant transmission limits Deficit Excess power deficit: 100 MW afrr activation: 50 MW power excess: 50 MW afrr activation: 0 MW Innovations in the Transmission System Dr. Johannes Henkel 10 / 17

11 50Hertz achievements in integrating balancing markets on a cross-border scale International Grid Control Cooperation (since 2012) Eight countries Cooperation started in 2011 Main feature: Imbalance netting >300 Mil. EUR saved since 2011 Frequency Control Reserve (FCR) cooperation Six countries Cooperation started in 2012 Main features: Common procurement Innovations in the Transmission System Dr. Johannes Henkel 11 / 17

12 Future Innovations in System Operation

13 Ideas of innovative system operation Background: Adaption of protective system Data exchange, evaluation and use FACTS/HVDC/ PST for load flow control Increase of flexibility of generation and demand Increase of RES in the power system leads to increasing transmission task Therefore the grids have to be extended At the same time an optimised use of the infrastrucure shall be assured without decreasing today s level of security of supply Further development of EMS/SCADA Goal: Development and testing of innovative system operation concepts, technologies and strategies Innovations in the Transmission System Dr. Johannes Henkel 13 / 17

14 Components of Innovative System Operation EPC: Emergency Power Control UPFC: Unified Power Flow Controller TCSC: Thyristor Controlled Series Capacitor Horizontal and vertical adjustment of flows in normal as well as fault operation and alert state Innovations in the Transmission System Dr. Johannes Henkel 14 / 17