Smart controls for distribution systems with high share of RES. DFBEW conference Paris, 24th of November 2016

Transcription

1 Smart controls for distribution systems with high share of RES DFBEW conference Paris, 24th of November 2016

2 Agenda 1 Short Introduction 2 Challenges of RES Integration for EWE NETZ 3 Smart controls at EWE NETZ 4 Demonstration project enera and outlook

3 Responsibly providing well-functioning and modern networks in our supply regions Electricity / gas Telecommunications Brandenburg

4 EWE NETZ is decades ahead of the German governmentʼs renewable energy targets German governmentʼs expansion targets for renewable energy Proportion of electricity generated from renewable and conventional energies Renewables Conventional 2014 by % % 80 % 80 % EWE NETZ: Feed-in volumes Proportion of electricity from renewable and conventional energies in the EWE network Renewables Conventional 82 % 75 % 63% 75% 94%

5 Expansion of renewable energies decided on a distribution network level Energy sources: wind, solar, biogas, hydroelectric, gas (in MW) Installed renewable energy capacity +138 % Annual peak load in the network

6 Agenda 1 Short Introduction 2 Challenges of RES Integration for EWE NETZ 3 Smart controls at EWE NETZ 4 Demonstration project enera and outlook

7 The future proof power distribution system: Need for demand, supply and storage management 380 kv power plants Offshore-Wind-power-plant 220/110 kv EWE NETZ GmbH industrial and commercial users Wind-power-plant 20 kv PV-plant CHP 0,4 kv industrial and commercial users Cogeneration plant Wind-power-plant biogas plant household with storage household with CHP household with PV PV-plant

8 6 4 Increasing feed-in of renewables leads to utilization of the grid near or over its limits Eilsum Niederlangen 6 4 Wybelsum Haselünne Peak load of HV/MV transformers (exemplary) Hage Nord 6 4 Esterwegen Ihlow Holtriem 6 4 Sögel 4 Hohenkirch. 6 4 Wiesmoor Nordenham 6 4 Krempel 6 4 Oersdorf Freiburg Electricity Rotenburg grid 6 Today the dimensioning is already determined by renewables, grid utilization increases 6 4 Peak load power generation [MW] Peak load consumption [MW] 4 Großenkn. 6 Compliance of requirements on the Stand: 04/2014 Quality of Supply (e.g. Voltage V, Load (Current I)) Responsibilty of Grid Operator due to regulation framework

9 Feed-in Management in EWE NETZ networks Strong increase in interventions 90 % due to upstream constraints number on interventions in 2014: 666 number on interventions in 2015: 1220 *) *) as of request of HV- or EHV-grid operators request of EWE NETZ

10 Agenda 1 Short Introduction 2 Challenges of RES Integration for EWE NETZ 3 Smart controls at EWE NETZ 4 Demonstration project enera and outlook

11 Current German laws require the expansion of the power system even to a "20 - lanes highway" Today the required grid expansion to integrate Renewables is following a worst case approach, which is unusual in other sectors Only in a few hours per year decentralized generators provide their full capacity, but the grid hosting capacity has always to be designed to fit and forget this peak. Comparison Autobahn : All highways with a traffic jam once a year would need a new lane to prevent any jam in the following year! Most lanes are only partially used during the rest of the year.

12 Wahrscheinlichkeitsdichte Probability density [1/MW] Auslastung Utilisation in % First analytical research based on a RES Szenario in a typical rural distribution network Rural MV-grid (including LV) Empirical distribution function for decentralised injection: Verteilungsfunktion Scenario 200% gesamte RES Einspeisung: 200 % Szenario für 2010 normal abgeregelt Empirical hourly transformer utilisation 110/20 kv: Auslastung Scenario 200% des RES UW-Trafos: 200 % Szenario für normal abgeregelt t in h P [MW] The analytical relation between power generation and network utilisation

13 Grid connection capacity in % Proposal: Grid connection capacity for RES on DSO level could be doubled by using 5% DG-flexibility Targets of EWE NETZ: Fast & secure connection/ integration of RES on DSO level Cost reduction on DSO level Dynamic curtailment of max. 5%! 150 by reducing the need for network expansion Dynamic RES-curtailment in % of annual generated energy EWE Proposal Dynamic 5% approach of EWE NETZ according to RES would offer the opportunity to double the grid connection capacity on DSO level Est. in german law since July 2016

14 Frequency of application Development state of new technologies Special Cases only Comprehensive LOM Legend dynamic curtailment LOM: Low Impact Operation Mode Method for voltage optimization Smart GIS Measurement Systems LV Grids Monitoring MV Grids FACTS-WT: Wind turbines with flexible and dynamic reactive power capabilities Battery Storages Transformeroverloadforecast (TÜV) FACTS-WT AVR-controlled Substations STATCOMs Smart GIS: Geographical information system with load flow calculation STATCOM: Converter for static reactive power compensation (voltage control) Power2Gas ines R&D Development State Liner Regulators Ready for use ines: Automation System for LV- Grids by SAG und Mauell Measurement Systems LV-Grids: Smart Meter Systems with additional capabilities for Voltage measurement

15 Implementation of infrastructure strategy: Operationalisation of the Smart Grid at EWE NETZ motivation Smart grids promise a significant cost reduction potential Tool box for Smart Grids LOM dynamic curtailment Intelligent INES TÜV control center Controllable transformer Voltage controller FACTS Wide area control ITC -network Q-Control Conventional grid Substitution of conventional grid expansion Project order: Analysis and implementation of concrete measures to build a smart grid at EWE NETZ today Conventional grid expansion tomorrow Conventional grid expansion Smart grid

16 Agenda 1 Short Introduction 2 Challenges of RES Integration for EWE NETZ 3 Smart controls at EWE NETZ 4 Demonstration project enera and outlook

17 The next big step towards a sustainable world

18 enera Showcase: Transforming Energy Requirements by the German Chamber of Commerce and Energy enera Demonstration Home Base Requirements by Goverment Motivation: blueprint Smart Grid + Smart Market Players: DSO, TSO, Utilities, start ups manufacturers of energy technologies and storages, ITC-industry, renewable energy industry, universities, politics etc. Extent: governmental funded up to 50 Mio. Euro Time horizon: 4 years Conditions: households connected - 3 times peak load produced through wind generation - Integration of existing telecommunication infrastructure - Supra-regional load centre Energie kompetent vernetzen. strictly confidential

19 enera The digital Transformation What has to be done considering the next big step? SMART MARKETS ENERGIEWENDE - APPSTORE SMART GRIDS BIG DATA + ANALYTICS Energie kompetent vernetzen. strictly confidential

20 Smart Grid Operators (SGO) traffic light concept system stability overload actual scenario in future TSO DSO TSO DSO BDEW cascade AFE concept EISMAN BDEW cascade AFE concept EISMAN BDEW cascade AFE concept dynamic curtailment BDEW cascade AFE concept dynamic curtailment overload (forecast) flexibilities flexibilities normal operation frequency management voltage management voltage management frequency management voltage management voltage management In the yellow phase flexibilities are crucial!

21 Thank you for your attention Tim Lüken EWE NETZ GmbH Cloppenburger Str Oldenburg (Germany) T tim.lueken@ewe-netz.de