Kaplan - Hydro Turbines - Brochure

RPW/BPROS/VRTKPL12/eng/HYD/03.12/FR/7565 © - ALSTOM 2012. ALSTOM, the ALSTOM logo and any alternative version thereof are trademarks and service marks of ALSTOM. The other names mentioned, registered or not, are the property of their respective companies. The technical and other data contained in this document is provided for information only. ALSTOM reserves the right to revise or change this data at any time without further notice.HYDRO POWER SOLUTIONSVertical KaplanPower PlantsHigh performance over a large range of heads and discharge Vertical Kaplan power plants in brief: Kaplan power plants are designed for low head applications typically between 15 and 40 m, with unit outputs from 30 to 250 MW with even bigger outputs currently under study. When used in a run of river configuration, Kaplan power plants can help to accommodate smaller-sized reservoirs, limiting the impact on the environment. Kaplan turbines are characterized by adjustable blades and wicket gates which enable them to deliver efficient output over a wide range of heads and discharge – an important feature given they are frequently used where river flows vary significantly with the season. Their vertical configuration allows larger runner diameters (over 10 m) which increases unit power and decreases the number of units needed. Innovations for optimized performance and reliabilityAlstom has been leading the way in innovating Kaplan power plants for increased performance and reliability for its customers, since it introduced its first Kaplan turbine in 1925.Maintenance-free stator frame: The generator’s stator elements are attached to the base at oblique angles. This reduces mechanical stress and enables the elements to expand as they heat up during generator operation. They also have the added benefit of having no moving feet which means they don’t need maintenance and can’t get blocked which could cause the unit to fail. Insulation: Alstom’s leading insulation system, with high quality stator windings, strong mechanical fixing of both bars and the stator core, leads to long, trouble-free operation. Shaft lines: Alstom provides its customers with short and stiff shaft lines that reduce the height of the powerhouse and, as a consequence, the civil works required. They also improve mechanical behaviour which in turn increases performance.Alstom provides the full range of products and services for Kaplan power plants, including, turbines, generators, hydro mechanical equipment, control systems, balance of plant and services.RPW/BPROS/VRTKPL12/eng/HYD/03.12/FR/7565 © - ALSTOM 2012. ALSTOM, the ALSTOM logo and any alternative version thereof are trademarks and service marks of ALSTOM. The other names mentioned, registered or not, are the property of their respective companies. The technical and other data contained in this document is provided for information only. ALSTOM reserves the right to revise or change this data at any time without further notice.Alstom contributes to the protection of the environment. This leaflet is printed on environmentally-friendly paper.HYDRO POWER SOLUTIONSVERTICAL KAPLANKaplan turbines with a variety of blade configurations: Alstom provides a wide range of Kaplan turbines from 3- or 4-blade Kaplan turbines for low heads and 5- or more blade turbines for higher heads in the Kaplan’s range.Down stream safety gates: Proven through successful operation at many plants over many years, downstream safety gates provide reduced material and civil works costs compared to upstream safety gates.Control systems: Alstom’s control systems can cover the entire plant, including turbine speed governing systems, generator excitation to the entire control room with plant management, operation and optimization tools, through plant and machine automation, to asset management and remote diagnostics. For more information please contact Alstom Power: Alstom Hydro Europe Middle-East AfricaLevallois-Perret/ France+ 33 (0)1 41 49 20 00 North America Sorel-Tracy, Québec/ Canada+ 1 450 746 6500 Latin America Taubaté/ Brazil + 55 12 3608-3000 ChinaTianjiin/ China+ 86 (22)26832560 AsiaVadodara / India + 91 265 6613000 Australia and New-ZealandSydney/ Australia+ 61 (0)2 8870 6000Visit Alstom Power online:www.alstom.com/powerRecent key references Barra dos Coqueiros (Brazil), 2010 46 MW per unit – 36 m headCacu (Brazil), 2010 33 MW per unit – 26 m headEstreito (Brazil), 2011 152 MVA generators, downstream gatesMonte Claro (Brazil), 2006 67 MW per unit – 39 m headBrillant (Canada), 2005 120 MW per unit, turnkey plant – 30 m head Grand Mere (Canada), 2004 77 MW per unit turbine/generator units, governors – 24 m headLongkou (China), 2009 100 MW per unit turbine/generator units – 31 m headBujagali (Uganda), 2011 51 MW per unit, turnkey plant – 21 m headDesigned with the environment in mindAlstom has developed fish-friendly Kaplan turbine designs, meaning their design greatly improves the survival of fish passing through the turbine. Additionally, Alstom’s hydrostatic water guide bearings, oil-free hubs and self-lubricating bushings, avoid petroleum-based lubricants. An additional benefit of hydrostatic water guide bearings is that they double as shaft seals, eliminating the need for a separate shaft seal component.