METHOD FOR INCREASING THE NET ELECTRIC POWER OF SOLAR THERMAL POWER STATIONS

The present invention allows increasing the net electric power supplied to the network by the solar thermal power plants of the cylindrical parabolic collector type by using the solar field in a more efficient manner, generating steam to drive the main ancillaries by means of steam turbines (turbo p...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	BLAZQUEZ GARCIA FRANCISCO, FRIAS MARIN PABLO, REDONDO CUEVAS MARTA, PLATERO GAONA CARLOS ANTONIO, VEGANZONES NICOLAS CARLOS
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	BLASTING ENGINE PLANTS IN GENERAL ENGINE PLANTS NOT OTHERWISE PROVIDED FOR ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOTOTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISEPROVIDED FOR OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PRODUCING MECHANICAL POWER SPRING, WEIGHT, INERTIA OR LIKE MOTORS STEAM ACCUMULATORS STEAM ENGINE PLANTS STEAM ENGINES WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	The present invention allows increasing the net electric power supplied to the network by the solar thermal power plants of the cylindrical parabolic collector type by using the solar field in a more efficient manner, generating steam to drive the main ancillaries by means of steam turbines (turbo pumps), reducing electric consumption of the ancillary services and therefore increasing the net electric power of the plant. On days when the solar radiation is greater than the designed radiation, part of the solar field must stop being used since the generator and the turbine would exceed its designated power. The present system proposes harnessing the unused portion of the solar field for generating steam to drive the main ancillaries of the plant, energy which would otherwise not be harnessed. In addition, the overall operating performance of the ancillary service pumps is better when using steam to drive the pumps through a steam turbine (turbo pumps) instead of driving them with electric motors (motor pumps). Método para incrementar la potencia eléctrica neta de centrales termosolares. La presente invención permite incrementar la potencia eléctrica neta suministrada a la red por las centrales termosolares, al disminuir el consumo eléctrico de los servicios auxiliares, de forma que se accionan las bombas principales de servicios auxiliares con turbinas de vapor (turbobombas) directamente utilizando energía térmica producida en la central. Por un lado se aprovecha la energía térmica directamente para alimentar los servicios auxiliares en los días que la radiación solar es mayor que la radiación de diseño ya que el generador y la turbina no pueden sobrepasar su potencia asignada y se debe reducir la producción térmica, ante la imposibilidad de transformar dicha energía en energía eléctrica. Por otra parte el rendimiento del accionamiento de las bombas de servicios auxiliares es mejor al utilizar vapor para accionar las bombas a través de una turbina de vapor (turbobombas) en lugar de accionarlas con motores eléctricos (motobombas).