Alternative Transformer Fluids Energy Management - Transformers
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Alternative Transformer Fluids Energy Management - Transformers www.siemens.com/transformers/ester Product classes

The challenge: Alternative fluids are on the rise all over the world. Just like politics and science the energy industry is working on trendsetting solutions that ensure the safety and sustainability of the environment and population. One way of doing this is by exploiting renewable energy sources. But the efficiency and use of renewable resources in assets and equipment is also considered important. Alternatives to mineral oil are often used in environmentally protected areas and locations with a special need for fire safety. Our contribution: Siemens Transformers has been one of the first...

When Siemens Transformers started working with alternative fluids, customers were usually forced to substitute mineral oil due to external circumstances like environmental protection, nearby lakes or drinking water reservoirs. Fire safety measures were also sometimes a reason to go for alternatives. Today the capabilities of esters are nearly unlimited, as are the reasons why transformer operators decide to choose these fluids. They are used in almost any application and any location. Their benefits are just as numerous. As the ageing performance of esters outweigh those of mineral oil,...

Esters in all product classes Today Siemens Transformers use ester in distribution and power transformers of all sorts. Our extensive and in-depth research in our own labs allows us to fill even smaller ratings of HVDC-transformers with ester instead of mineral oil. Being the innovation leader in the transformer industry, we strive to be the first to provide our customers with innovative solutions in terms of ester-usage and we are keen on working with you to meet your challenges in this regard. HVDC Transformers Generator Step-Up Transformers Phase Shifters System and...

Higher fire safety • Higher flash and fire point • Fire point above 300°C • K class rating (IEC 61100 / 61039) • Lower gas conversion factor • Tank rupture prevention Cost savings Lifetime extension • Slower decrease in the degree of polymerization • High capability to take water from cellulose • Dielectric strength unaffected by water • Higher temperature limits Cost/ Savings Savings from design difference Bio-oil transformer extra costs Smaller Footprint • Eliminate rocks, grating, and support steel • Change containment size • Shorter bus duct length Challenges Why alternative? Product...

Mineral oil Made from non- • Limited biodegradability renewable resources • Low fire point We differentiate between three types of alternative fluids: • Silicone oil (fully synthetic) • Synthetic esther (derived from chemicals) • Natural esther (derived from plant seed oils) What they all have in common is that they extend the transformers lifetime - if the unit is calculated, designed and manufactured with the highest quality imaginable. The degree of polymerization decreases slower with alternative fluids than with the use of mineral oil. All fluids mentioned above have a high capability...

Benefits regarding safety and 0-harm „0-harm-policy and safety are core values of most companies within the energy industry. This includes the safety of their staff as well as the mitigation of such risks for the public and the environment. The higher flash and fire points of alternative fluids add to that risk mitigation, as well as the K class rating (acc. to IEC 61100 / 61039) and a lower gas conversion factor. Higher oil flash and fire points make operation safe and protect valuable assets; lower gas conversion factors reduce risk of tank rupture. These characteristics lead to a high...

Financial benefits The special characteristics of alternative fluids like their high flame and flash point and biodegradability as well as their dielectric hygroscopic features and oxidation stability lead to financial benefits in OPEX. CAPEX The initial price for an ester-filled-transform-er is usually higher due to material price and design adjustments. However, the higher investment can often be balanced with savings in the construction of the transformer location. Distances and fire safety equipment can often be reduced. OPEX Besides the smaller footprint and lower construction costs...

Reliable and safe transformers for all branches & applications Traction Transformers for railway locomotives Power Transformer for the cavern of a hydro power plant Distribution Transformers for Wind Turbines Natural Ester at 420 kV Power Transformer Mobile Resiliency Units for emergency situations Distribution Transformers for Germany Hermetically sealed Power Transformer with natural ester O & G: Converter-Transformer with Synthetic Ester Power Transformer with waste heat utilization Power Transformers for Operation on Ships Traction Transformers for highspeed trains Oil & Gas: Firesafe...

Traction Transformers Railway Locomotives, USA Application Railway Locomotives Insulation Synthetic Ester Benefits • Environmental protection • Green image • Gain operational knowledge Technical data Rated Power: 6,2 MVA Challenges Why alternative? Product classes Benefits Technical | Safety | Financial References fflf \

Application Distribution Grid Insulation Synthetic Ester & FR3 Benefits • Environmental friendlyness • Enhance operational experience Distribution Transformers Germany Technical data >100 Transformers for different ratings from 160 – 630 kVA Product classes

Application Highspeed Trains Insulation Synthetic Ester Benefits • Sustainability • Green image Technical data Rated Power: 2,2 MVA Challenges Why alternative? Product classes Benefits Technical | Safety | Financial References fflf \

Application Hydro power plant Insulation Synthetic Ester Benefits • Biodegradability • Renewable resources for renewable generation • Longer lifetime of hygroscopic insulation • State-of-the-art technology Power Transformer Hydro Power Generation, Sweden Technical data four GSUs Ratings: 121,33 (122) / 60,6 (61) / 60,6 (61) MVA Voltage levels: 433/3 / 16,8 / 16,8 kV Challenges Why alternative? Product classes Benefits Technical | Safety | Financial References fflf \