Special Purpose Transformers. Johann Griebichler, Marketing & Sales Distribution Transformers, Factory Weiz - Austria

Transcription

1 Special Purpose Transformers Johann Griebichler, Marketing & Sales Distribution Transformers, Factory Weiz - Austria siemens.at/future-of-energy

2 Agenda Location Siemens AG Österreich, Factory Weiz Renewable Energy Transformer for Wind Turbines Energy Distribution Generator Step Up Transformer Industrial Transformers for Drive Applications in General Industrial Transformer for 24-pulse Drive Application Page 2

3 Siemens AG Österreich, Transformers Weiz Plant Weiz Since 1892 Employees Area m² Page 3

4 Products factory Weiz Experience since more than 120 years in Power Transformers Generator Step Up Transformers Substation Transformers (Multiwinding- and Autotransformers Phase Shifting Transformers Single- and Dualtank, symmetric and asymmetric Phase Angle Reactors Adjustable Shunt Reactors and Seriesreactors Distribution Transformers Standard Distribution Transformers Special Applications (Renewable Energy, Industry etc.) 1ph and 3ph up to MVA / 765 kv 1ph and 3ph up to MVA / 765 kv 1ph up to 150 MVAr / 765 kv 3ph up to 250 MVAr / 765 kv 1ph and 3ph up to 12,5 MVA / 72,5 kv Page 4

5 Renewable Energy Transformers for Wind Turbines Customer Siemens Wind Power / Dong Energy Windfarm Anholt Located in Denmark inside the area Kattegat between city Grenaa and island Anholt. On the 19 th of May 2013, the last wind turbine was errected, full operation is planned for 4 th of September Total Power 400 MW 111 pcs. Wind turbines Siemens SWT Power 3,6 MW Rotor diameter 120 m Hub height 81,6 m 88 km² total area of the Windpark Page 5

6 Renewable Energy Transformers for Wind Turbines Customer Siemens Wind Power / Dong Energy Special Transformer Design for the Anholt project Transformer Rating 4 MVA Ratio / 690 V Hermetically sealed with rubber bag Filling with ester Midel 7131 (biodegradable) Nomex high temperature insulation Fully aluminium windings Zincflake coating system acc. C5M (marine standard) with 240 µm layer thickness KFAF cooling (forced liquid / forced air) Installation inside the wind turbine Page 6

7 Energy Distribution Generator Step Up Transformer Customer KWD GmbH Hydro Power Plant Dientenbach Located in Austria / Salzburg in the Pinzgau area. In summer 2011, the power plant was commissioned and integrated into the 30 kv medium voltage system of the local utility Salzburg AG. Total Power 4700 kw Pelton Turbine with 6 injectors Annual production 20,5 Mio. kwh 2500 l/s Water Fall height 221 m Pressure piping length 4170 m with 1200 mm diameter Page 7

8 Energy Distribution Generator Step Up Transformer Customer KWD GmbH Transformer Design for project Dientenbach Transformer Rating 6300 kva Ratio / 6300 V Expansion tank design Low loss design Sound pressure level 45 db(a) 0,3 m Zincflake coating system with 210 µm layer thickness Fully type tested Noise level Heat run test Lightning impulse test Partial discharge test Page 8

9 Industrial Transformers for Drive Applications General Due to many available drive/converter solutions, three main transformer designs are significant in this area: Transformer for 6-pulse operation Designed as standard 2-winding transformer Transformer for 12-pulse operation Designed as 3-winding transformer in double tier design Transformer for 24-pulse operation Two double tier active parts in one transformer tank Every converter transformer is designed for additional cooling capacity - Due to non-sinusoidal load and harmonic distortion, additional losses will occur. Page 9

10 Industrial Transformers for Drive Applications Example scheme Single line diagrams for 24 pulse operation Solution 1: Two seperate transformers with HV phase shift - Transformer 1 with +7,5 - Transformer 2 with -7,5 Solution 2: One transformer with 4 shifted LV windings -7,5 / +7,5 / +22,5 / +37,5 Page 10

11 Industrial Transformer for 24-pulse Drive Application Customer Mutanda Mining Group Mutanda Mining (MUMI) The Mutanda Mine is located in the Katanga province in the south of the Democratic Republic of Congo, main products are Cobalt and Copper. In November 2011, the operator Glencore International started to upgrade the annual production with additional investments in new machinery Annual production: to Copper (increase up to to) to Cobalt (increase up to to) New SAG (semi autogenous grinding) mill: 8,3 MW Twin pinion design 2 pcs. 24 pulse multiwinding transformers Page 11

12 Industrial Transformer for 24-pulse Drive Application Customer Mutanda Mining Group Transformer Design for MUMI twin pinion SAG mill Transformer Rating 5500 kva (2 pcs.) Ratio / 4 x 2200 V Vector group D+7,5 y11d0 and D-7,5 y11d0 Conservator hermetically sealed (rubber bag design) Cable boxes IP54 Zincflake coating system acc. C5M marine standard with 240 µm layer thickness Fully equipped with CT s for differential protection 3 pcs. CT S HV side 12 pcs. CT s LV side Special protection devices Page 12

13 Summary Portfolio factory Weiz, distribution transformers Standard transformers 1ph and 3ph up to 12,5 MVA acc. standard IEC76/EN60076 and different national standards Industrial transformers (multiwinding, double tier etc.) up to 12,5 MVA acc. IEC76 and also standards for converter load acc. EN61378 Transformers for renewable energy (wind, photovoltaic, hydro) with biodegradable liquids and lowest losses Distribution transformers with OLTC (on load tap changer) 100% adjustable to nearly every special demand Page 13

14 Contact Johann Griebichler Marketing and Sales Distribution Transformers Siemens Aktiengesellschaft Österreich, Transformers Weiz Elingasse 3 A-8160 Weiz Phone: Fax: Mobile: johann.griebichler@siemens.com siemens.at/future-of-energy Page 14