Authors: Reinhard BREHMERWIEN ENERGIE Stromnetz GmbH - Austria
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Frankfurt (Germany), 6-9 June 2011 Authors: Reinhard BREHMER WIEN ENERGIE Stromnetz GmbH - Austria Thomas SCHUSTER WIEN ENERGIE Stromnetz GmbH – Austria Theodor CONNOR Siemens AG - Germany Christine SCHWAEGERL Siemens AG – Germany Wolfram H. WELLSSOW Technical University Kaiserslautern - Germany Wellssow – DE – Session 5 – Paper ID 364 A STRUCTURED APPROACH FOR SMART GRID IMPLEMENTATION
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A STRUCTURED APPROACH FOR SMART GRID IMPLEMENTATION. Authors: Reinhard BREHMERWIEN ENERGIE Stromnetz GmbH - Austria Thomas SCHUSTERWIEN ENERGIE Stromnetz GmbH – Austria Theodor CONNORSiemens AG - Germany Christine SCHWAEGERLSiemens AG – Germany - PowerPoint PPT Presentation
Transcript of Authors: Reinhard BREHMERWIEN ENERGIE Stromnetz GmbH - Austria
Frankfurt (Germany), 6-9 June 2011
Authors:
Reinhard BREHMER WIEN ENERGIE Stromnetz GmbH - Austria Thomas SCHUSTER WIEN ENERGIE Stromnetz GmbH – Austria Theodor CONNOR Siemens AG - Germany Christine SCHWAEGERL Siemens AG – Germany Wolfram H. WELLSSOW Technical University Kaiserslautern - Germany
Wellssow – DE – Session 5 – Paper ID 364
A STRUCTURED APPROACH FOR SMART GRID IMPLEMENTATION
Frankfurt (Germany), 6-9 June 2011
Challenges, Targets and Solution Development Challenges
Meet environmental constraints Increasing share of DG and new loads Economical challenges; building new grids with regulated tariffs
Targets Conversion
from top-down „blind“ distribution systems to active, interactive, „intelligent“ and transparent MV/LV systems
Solution development Start from objectives to be met rather than technologies
Identify technical feasibility Analyse cost and benefit Develop roadmap
Frankfurt (Germany), 6-9 June 2011
Objectives of Distribution System Development
Objective Investor Beneficiary Concept and TechnologySecuring supply reliability
Grid operator Power consumerGrid operator(in case of quality regulation)
Distribution grid automation New grid concepts Equipment monitoring
Improvement of voltage quality
Grid operator Power consumer
Grid operator(in case of quality regulation)
Participation of distributed generators in voltage control DSM (based on smart metering) LV-transformers with on-load tap changers (OLTC) Reactive power control by power electronics at grid side New grid concepts
Reduction of / equal low grid loading
Grid operatorMetering service provider
Grid operator Distribution grid automation DSM (based on smart metering) Storage
Loss reduction- technical- non technical
Grid operatorMetering service provider
Grid operatorPower consumer (reduced bill)
New grid concepts Participation of distributed generators in voltage control DSM (based on smart metering)
Simplified grid operation
Grid operator Grid operator Distribution grid automation New grid concepts
Active power balancing
Metering service provider Energy supplier
Energy traderEnergy supplierBalancing responsible party
Participation of distributed generators in active power balancing DSM (based on smart metering) Virtual power plants Storage
Frankfurt (Germany), 6-9 June 2011
Storage Options for Active Power Balancing
Frankfurt (Germany), 6-9 June 2011
Wien Energie Stromnetz GmbH (WES)
Biggest DSO in Austria System characteristics
>11 TWh demand 2,000 km2 supply area 2 Million customers 1,5 Million meters 40 substations 380/110 kV to 20 or 10 kV >10,000 MV/LV transformer stations 22,000 km line length
Frankfurt (Germany), 6-9 June 2011
WES Grid Concept as of todayMV LV
Ring feeder with open connections to other feeders
Open meshed network with
loop-through technique
Frankfurt (Germany), 6-9 June 2011
The Way to a Future-Proof Distribution Grid
New Requirements at MV and LV levels Securing power quality (e.g. voltage control) Reduction of grid losses
Measures Definition and implementation of new target structures
for the MV- and LV-grid Implementation of communication between all grid users
to maintain high quality of supply
Frankfurt (Germany), 6-9 June 2011
Technology Choice for the MV grid Open-ring scheme will be kept Elimination of abundant connections New average number of transformer stations per line
10 for the 10-kV-grid Every 5th station with connection to another feeder
20 for the 20-kV-grid Every 10th station with connection to another feeder
Maximum line current 60 % of rated Identification of important nodes
About 10 – 20 % of total Adaptation for SCADA monitoring preferable via fiber optics
Frankfurt (Germany), 6-9 June 2011
Technology Choice for the LV grid Implementation of a LV control system
Each LV feeder measured at the transformer station On-line power-flow calculation
2 options for grid enhancement Transformers with OLTC
High cost and difficult replacement Additional switches placed in important nodes
Turns „open-meshed networks“ into „meshed networks“ Comparably easy and stepwise implementation
Advantages of additional switches Reduction of grid losses at LV level Easier implementation Knowledge of load-flow enables control of DG and EV charging
Frankfurt (Germany), 6-9 June 2011
Roadmap
Stepwise transition from today to advanced smart Will take minimum 20 years Securing substantial investments for so many measures
over such a long period(Regulation! New tariff-structure needed)
Optimization program started Elimination of abundant lines All new or refurbished transformer stations equipped with
monitoring Additional breakers and earth-fault indicators installed
preferably in feeders with OHL
Frankfurt (Germany), 6-9 June 2011
Univ.-Prof. Dr.-Ing. W.H. WellssowTechnical University Kaiserslautern
Chair for Energy Systems and Energy Management
Erwin-Schrödinger-StrasseBuilding 11, Room 332D-67663 Kaiserslautern
Germany
Contact Information
Email: [email protected]: +49 (0)631/205-2021 Fax: +49 (0)631/205-2168Secretary Mrs. Haessel +49 (0)631/205-2826www.eit.uni-kl.de/wcms/esem.html
