Innovative solutions for integration of distributed renewable generation msterdam, 09-11 October 2012 Dr. Holger Müller Siemens PTI, Network Consulting Infrastructure & Cities, Siemens G Siemens G 2012. lle Rechte vorbehalten.
Challenges and chances Network structure of today Today s network concepts:: Radial networks Open ring structures Today Network structures are based on: vailable technologies from the 1950th and 1960th Communication technologies were extremely expensive Consequences: Very low degree of distribution automation and monitoring Page 1 October 2012 Siemens G 2012
Challenges and chances Trends are resulting in challenges Stochastical loads and generation (wind, PV) Network contingencies Cost pressure and regulation Innovative and economic technologies (e.g. ICT) Page 2 October 2012 Siemens G 2012
Changing infeed patterns challenge existing grid infrastructures Weekly loading of a transformer station in the rural area the LEW-Verteilnetz GmbH 2003 and today Load in kw 200 Load profile 2003 Load profile today 100 0-100 -200-300 Source: LEW 12:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 12:00 0:00 Page 3 October 2012 Siemens G 2012
Impact of renewables on distribution networks Overloading and changing power flows MV P Last P Last P Gen Substation LV P Gen P Last P Last P Last G P Last P Last P Gen P Gen Page 4 October 2012 Siemens G 2012
Impact of renewables on distribution networks Large voltage drops U u Max. load Last w/o ohne generation PV l / km U Min. load, max. generation Last mit PV u Max. load w/o Last generation ohne PV l / km Page 5 October 2012 Siemens G 2012
Possible Solutions 1. Network Extensions/Strengthening 4. Regulated distribution transformers Resolving Overloading problems P Resolving Voltage drop problems P (Voltage drop) 2. Changes in network structure Resolving P Overloading problems (Voltage drop) P 5. Load management Resolving Overloading problems (Voltage drop) Load P 3. Control of reactive power Resolving Voltage drop problems P 6. Energy storage Resolving Overloading problems P Q (Voltage drop) Page 6 October 2012 Siemens G 2012
Solutions FITformer REG Regulated distribution transformer On-load tap changer with three tap steps at LV side Characteristics and size are nearly identical to standard distributio transformers dditional tap changer available on HV-side Page 7 October 2012 Siemens G 2012
Solutions SIESTORGE Pilot installation in Italy Pilot in operation since February 2012 Connection to MV network of Italy s largest power utility ENEL Power Rating: 1 MV Energy Capacity: 500 kwh Usage: Frequency/primary control Integration of photovoltaic units Fast charging station of electrical vehicles Black-start capability Page 8 October 2012 Siemens G 2012
Solutions Monitoring (Smart Grid Diagnostic Kit) Smart Grid utomation System Smart Grid Diagnostic Kit Measurement Grid Communication Page 9 October 2012 Siemens G 2012
Solutions Monitoring and Network Control Smart Grid utomation System B B C C C Smart Grid Diagnostic Kit B Dynamic network control C Integration of storage, load and generation B C Measurements Regulated Transformers Control of storage, load and generation Grid Communication Page 10 October 2012 Siemens G 2012
Concepts for Smart Grids Network concept Smart Grid Operation Center Primary components Protection and automation Smart Metering Electro-mobility Building Management Switching Station Generation Communikation Main Infeed Stations Smart Grid Operation Center Operation Page 11 October 2012 Siemens G 2012
concept for future distribution networks Long-term strategic network planning considering Planning criteria and -requirements Forecast of future development Innovative technologies for primary equipment as well as automation and communication Development of a coherent target network concept with Optimal network structures Suitable protection and automation concept Most important key technologies Development of a roadmap for future investments Basis of each Smart Grid has always to be a solid network planning and development of concepts. Page 12 October 2012 Siemens G 2012
Dr.-Ing. Holger Müller Department Head Steady-State System Planning Siemens G, IC SG SE PTI STS Freyeslebenstr. 1 91058 Erlangen, Germany Phone: +49 9131 7 33590 Fax: +49 9131 7 34881 Mobile: +49 173 369 7776 E-mail: hmmueller@siemens.com www.siemens.com/power-technologies Siemens Siemens G 2012. G 2011. lle Rechte ll rights vorbehalten. reserved.