Trasformatori elettrici ad alta efficienza Milano, 20 Novembre 2006 Strategies for development and diffusion of Energy Efficient DistributionTransformers NTUA Frangiskos V. Topalis Athens, Greece
What is SEEDT? SEEDT is a European project which aims to: Promote the use of energy efficient Distribution Transformers (DT) Propose and apply strategies for reducing energy losses associated with DTs
The partners SEEDT project participants are: 1. NTUA - Greece 2. FAST - Italy 3. WUPPERTAL INSTITUTE - Germany 4. ADEME - France 5. AERE - France 6. ENDESA - Spain 7. PCPC Poland 8. AREVA T&D - Poland 9. LZE S.A. - Poland Subcontractor: THELCON - Greece
Potential of savings European potential of energy savings in Distribution Transformers is around 27 TWh (EU study)
Distribution Transformer (DT) Population by Type and Ownership Western Europe Owner Liquid-filled <250kVA Liquid-filled >250kVA Dry-type Total Utility 1,900,000 1,100,000 --- 3,000,000 Commercial 50,000 150,000 300,000 500,000 Industrial 50,000 350,000 100,000 500,000 Total 2,000,000 1,600,000 400,000 4,000,000
Age Distribution, Utility-owned Distribution Population, Western Europe 3,000 2,500 Number of Transformers ( 000) 2,000 1,500 Actual Theoretical 1,000 500 0 50 40 30 20 10 0 Age in Years
UK Norway Switzerland Sweden Spain Forecast Electricity Demand Western Europe (TWh) 600 500 400 300 200 100 0 Austria Belgium Denmark Finland France Germany Greece Ireland Italy Luxemburg Netherlands Portugal 2000 2005 2010 TWh
Daily Electricity Load Profiles LV Consumers Demand (kw) Domestic Demand (kw) Small commercial 1 30 0.9 0.8 25 0.7 0.6 Winter 20 Winter 0.5 15 0.4 0.3 Summer 10 Summer 0.2 0.1 5 0 0 2 4 6 8 10 12 14 16 18 20 22 24 Hour of the day 0 0 2 4 6 8 10 12 14 16 18 20 22 24 Hour of the day
Typical Load Factor Growth, Distribution Utility, 1950-2000 Load Factor (%) 70 60 50 40 30 20 10 0 1950 1960 1970 1980 1990 2000
UK Norway Switzerland Energy-efficient DTs, Scope for Savings in Europe, 2000 (TWh/year) 35.00 Reported Network Losses 30.00 25.00 20.00 TWh 15.00 10.00 5.00 0.00 Austria Belgium Denmark Finland France Germany Greece Ireland Italy Luxembourg Netherlands Portugal Spain Sweden
Energy-efficient DTs, Scope for Savings in Europe, 2000 (TWh/year) 14.00 Losses from Distribution Transformers TWh 12.00 10.00 8.00 6.00 4.00 Total Potential of savings 14.7 TWh (estimated) 2.00 0.00 Austria Belgium Denmark Finland France Germany Greece Ireland Italy Luxembourg Netherlands Portugal Spain Sweden UK Norway Switzerland Estimated Losses Estimated Scope for savings
SEEDT Goals (1) Promote the use of energy efficient DTs Develop best current practices, leading sales from D k E o transformer classes (former AA ) to A k A o (former CC ). Develop technical communication, buying clubs and specification tool kit for buyers Promotion and support of energy efficient DT s (amorphous iron, etc) including financial viability issues
SEEDT Goals (2) Study the feasibility of setting up: a labelling scheme or minimum voluntary standards or mandatory standards or minimum product standards for DT s Examine through round table discussions the will of key actors (manufactures, buyers, users, etc.) to accept and apply these proposals Encourage those actions which are viable and acceptable by key actors and can be applied
SEEDT expected results Increase of awareness of key actors (decision makers, salesmen and engineers) in realising the potential and the extent of attainable energy savings. A useful feedback from round table discussions that will help SEEDT to readjust the strategies. Realisation of promotion action for energy efficient DTs Stimulation of competitiveness among manufacturers for the production of more efficient DTs
Topics for discussion (1) Inventory of existing DT systems Which are the most common types that users select? How users weight DTs losses? Are users aware of the benefits of efficient DTs? Could they accept a higher purchase value (up to 30%) for low losses DTs?
Topics for discussion (2) Is there a trend towards more efficient DTs - next 2 years? Can you identify other main barriers (legal, production, cost, users )? How could these barriers be removed? Can manufactures have financial benefits by including efficient DTs in production line?
Topics for discussion (3) Do HD428 or the pren 50464-1 (Oil-type DT) & HD538 (Dry-type DT) standards meet modern trends for energy efficient equipment? Is there a need for a voluntary agreement or mandatory standard focusing on energy efficiency? Will a labelling scheme for DTs be useful for manufactures, buyer and users? as already applied e.g. in pumps, chillers and proposed for street luminaires
Thank you Wish to have a fruitful discussion