Gemasolar a thermal solar power plant with 15 hours, Ignacio Burgaleta (Torresol Energy)
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Gemasolar a thermal solar power plant with 15 hours, Ignacio Burgaleta (Torresol Energy)

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Gemasolar a thermal solar power plant with 15 hours, Ignacio Burgaleta (Torresol Energy)

Gemasolar a thermal solar power plant with 15 hours, Ignacio Burgaleta (Torresol Energy)

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  • 1. 11 June 2013, Madrid© Torresol EnergyGEMASOLAR: A THERMAL SOLAR POWER PLANT WITH15 HOURS OF THERMAL STORAGE SYSTEMWORKSHOP ON APPLICATIONS OF SOLAR FORECASTINGJuan Ignacio BurgaletaDirector of Technology
  • 2. © Torresol Energy 211 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEMINDEX1. Torresol Energy2. The GEMASOLAR Plant3. Innovations4. Operation5. Construction6. Commercial operation7. Conclusions
  • 3. © Torresol Energy 311 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM1. Torresol Energy• Engineering, consulting, and systems inte-gration company. Founded in 1956.• Very active in Solar Energy since 2000.– Technology developer: SENERtrough collector system, Sensolsoftware, heliostats, heliostat axis drive mechanisms, molten salttechnology (as storage system and as heat transfer fluid) centraltower receiver… amongst many other innovations.– PSA Tower Prototype– Turn Key Projects: Andasol 1 & 2, in Granada; Extresol 1, 2& 3, in Badajoz; one plant in La Garrovilla (Badajoz); oneplant in Alvarado (Badajoz); and two plants in Navalvillar dePela (Badajoz).60% 40%• 100% “Mubadala DevelopmentCompany” stockholding.• Mubadala Development Company”belongs to the Abu Dhabi Emirate.• Goal: development and commer-cialization of innovative technologiesin renewable, alternative and sus-tainable energies.A STRONG ALLIANCE
  • 4. © Torresol Energy 411 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM1. Torresol EnergyGEMASOLAR(Tower)VALLE 1(PTC)VALLE 2(PTC)
  • 5. © Torresol Energy 511 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM2. The GEMASOLAR Plant
  • 6. © Torresol Energy 611 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM2. The GEMASOLAR Plant• Storage systemSolar energySolar field andcentral tower receiverMolten saltsstorage system• Generation systemMolten saltsstorage systemSteamgenerationsystemTurbine/generatorsystem Grid
  • 7. © Torresol Energy 711 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM2. The GEMASOLAR Plant• High thermal storage capacity (24 hours).• The same fluid is used for heat transfer and storage.• The molten salts reach highest temperatures (565ºc) maximizing thermodynamic efficiency.• The whole piping system is contained in an small area, reducing the heat losses, themaintenance costs and minimizing the possibility of leaks.• Lower operation risk (No mobile piping system. No swivel joints. No thermal oil).• Highest cycle efficiency.Advantages of Central Tower with Molten Salt Technology
  • 8. © Torresol Energy 811 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM2. The GEMASOLAR Plant
  • 9. © Torresol Energy 911 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM3. Innovations (Heliostats)• High surface (115 m2).• High optic quality and precision.• Integrated facet mirror-structure.• Innovative system of facets union.• Reduced manufacturing, assembly andmaintenance costs.Developed by SENER
  • 10. © Torresol Energy 1011 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM3. Innovations (Receiver)• Optimize size to minimize thermal losses.• High flow of incident radiation.• Optimize the design to the maximum temperatureof the metal.• Thermal maximum efficiency.• Designed for 25 years of operation.Solar receiverPrototype receiver testing inthe PSA of AlmeríaReceiver Developed by SENER withPSA-CIEMAT colaboration
  • 11. © Torresol Energy 1111 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM3. InnovationsSolar Field Control System• Innovative Control system of solarfield composed by 2650 heliostats,positioned at north, south, east andwest of the tower.• Optimize the electricity consumptionof the heliostat actuation system.• Development of a new pointingstrategy that guarantees the gooddistribution of the solar flow incidentin the receiver.• Reduce the time of heliostats de-focusing.Developed by SENER
  • 12. © Torresol Energy 1211 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM3. InnovationsMolten Salt Storage System– Tranference fluid and thermalstorage: Nitate molten salts 60%Na NO3 y 40% KNO3.– 15 hours of thermal storagecapacity, operating with turbine innominal conditions.– Operatoin tempeature 565.– Pumping of salts to the receiverplaced in the tower at 140 m.Power block, molten salt storage system ofthe GEMASOLAR PlantDeveloped by SENER
  • 13. © Torresol Energy 1311 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM4. OperationGEMASOLAR Flow Diagram
  • 14. © Torresol Energy 1411 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM4. OperationGEMASOLAR Daytime Operation
  • 15. © Torresol Energy 1511 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM4. OperationGEMASOLAR Daytime Operation during Cloudy Periods
  • 16. © Torresol Energy 1611 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEMGEMASOLAR Nightime Operation4. Operation
  • 17. © Torresol Energy 1711 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM5. ConstructionAerial view of the GEMASOLAR Power Block
  • 18. © Torresol Energy 1811 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM5. Construction
  • 19. © Torresol Energy 1911 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM5. ConstructionAerial view of the GEMASOLAR Plant
  • 20. © Torresol Energy 2011 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial Operation
  • 21. © Torresol Energy 2111 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial Operation• Commissioning activities started November 2010:− Heliostats calibration.− Salt molten in a temporary installation and stored in the cold tank (November –December 2010)• End of April 2011 plant synchronized.Start up and Commissioning
  • 22. © Torresol Energy 2211 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM• From early May 2011 providing electricity to the grid.• End June, 24 hours of uninterrupted electricity production.• On July 6 2011 performance test, result exceeded theoretical prediction.• Excellent hourly production predictions.6. Commercial Operation
  • 23. © Torresol Energy 2311 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial OperationStarting & Shutting Down the Receiver• Every day the receiver temperature changes quickly from the environmental conditions tilloperation conditions (565ºC)• Procedures to control all the parameters-components which affect the receiver filling anddrainage developed by Torresol Energy to secure the efficiency and the security (delicateoperation)• Complex system: Sincronization between Solard Field (heliostats) and the CentralReceiver System (CRS)• Thermography cameras are part of the control tool for the radiation flow onto the receiverand are synchronized with the solar field software (heliostats pointing)
  • 24. © Torresol Energy 2411 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial OperationStarting & Shutting Down the Receiver• Importance of a good reciever drainage• The molten salt must be between 260ºC and 565ºC.• Operational improvements extend the dailyproduction• Calibration of the heliostats: Targets located belowthe receiver to calibrate the heliostats
  • 25. © Torresol Energy 2511 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEMActual Guarantee– Receiver Thermal Power 135 MWTh 120 MWTh– Net Electrical Production 414.3 MWh 302 MWh– Receiver Outlet Salts Temp. 565 ºC 565 ºC– Gross Power 19.9 MW 19.9 MW– Net Power 17.0 MW 17.0 MW24 h Overall Performance Test passed on July 6th, 20116. Commercial Operation
  • 26. © Torresol Energy 2611 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial OperationProduction dates. From 16-08-2011, 00:00 hour to 17-08-2011, 00:00 hour
  • 27. © Torresol Energy 2711 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial OperationNon-stop operation in Winter time
  • 28. © Torresol Energy 2811 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM6. Commercial OperationTurbine continuously running at nominal power in summer
  • 29. © Torresol Energy 2911 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM12 DAYS OF CONTINUOUS PRODUCTION6. Commercial Operation
  • 30. © Torresol Energy 3011 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM7. Next Steps• We, and most of the analysts, consider that thetechnology of Central Tower Plants with Molten Saltshas higher opportunities to achieve the grid parity ina shorter period of time due to:− Larger future cost reduction.− Size to be increased.− New equipment yet to be developed.− Affordable construction materials.• Next Tower Plant with Molten Salt Storage System:− + 500 MWt receiver ( +12.000 heliostats)− Storage System capacity depending on Marketrequirements
  • 31. © Torresol Energy 3111 June 2013, MadridGEMASOLAR: A THERMAL SOLAR POWER PLANTWITH 15 HOURS OF THERMAL STORAGE SYSTEM7. Conclusions• GEMASOLAR is the first commercial-scale plant featuring a central towermolten salt receiver with thermal storage capabilities supplying electricityto the grid from May 2011.• The molten salt thermal storage system helps avoid fluctuations in powersupply and enables to produce electricity during 15 hours in the absenceof solar radiation.• The 19.9 MWe GEMASOLAR Plant became the first CSP ever togenerate uninterrupted electricity for 24 hour at full capacity.• Next Tower Plant and Molten Salt System with increased power
  • 32. 11 June 2013, Madrid© Torresol EnergyThank you