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Method for increasing the net electric power of solar thermal power stations

A technology for solar thermal and thermal power plants, applied in the field of solar thermal power plants, can solve problems such as power consumption and underutilization of solar field energy.

Inactive Publication Date: 2012-03-28
UNIV MADRID POLITECNICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, in the period when the solar radiation is greater than the design radiation, because a part of the collectors stop working, the solar field energy is not fully utilized, and on the other hand, a large amount of electric energy is consumed by auxiliary equipment

Method used

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  • Method for increasing the net electric power of solar thermal power stations
  • Method for increasing the net electric power of solar thermal power stations
  • Method for increasing the net electric power of solar thermal power stations

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Embodiment Construction

[0088] The present invention relates to a method of increasing the net power of a solar thermal power plant, wherein better utilization of solar thermal collectors reduces the electricity consumption of auxiliary equipment.

[0089]The more important auxiliary equipment of the power station is driven by the steam turbine (turbo pump) instead of the electric motor (motor pump) currently used. This approach allows utilization of thermal energy from otherwise inactive solar collectors during periods of high solar radiation. Therefore, as it is currently done, the steam pressure at the turbine inlet must be controlled, thus adjusting the number of solar collectors operating, however, collectors that would otherwise be inactive will be activated as the auxiliary equipment consumes more steam device.

[0090] Using a steam turbine to drive a pump offers the following advantages:

[0091] Harnessing solar thermal energy that would otherwise not be available to generate electricity ...

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Abstract

The invention achieves an increase in the net electric power supplied to the mains network by solar thermal power stations with cylindrical parabolic collectors, by making efficient use of the solar field, generating steam to drive the main auxiliaries by steam turbines (turbo pumps), reducing the electricity consumption of the auxiliary services and increasing the net electric power. On days when the solar radiation is greater than that for which the system was designed, part of the solar field will not be used because the generator and the turbine would exceed the power level assigned to them. The proposed system uses the unused portion of the solar field to generate steam to drive the main auxiliaries of the power station, energy that would otherwise not be utilized.; In addition, the pumps of auxiliary services are driven more efficiently overall when use is made of steam to drive the pumps via a turbo pump instead of driving them with electric motors (motor pumps).

Description

technical field [0001] The invention relates to the application of solar thermal power plants based on the capture of energy by thermal fluids and the subsequent generation of steam for the production of electrical energy by steam turbines and generators. Background technique [0002] Solar thermal power plants are designed according to certain solar radiation conditions, so in the case of large radiation conditions, the power of the turbines and generators will be exceeded, so the system cannot convert all the available solar thermal energy into electricity. Thus, in the case of high radiation collectors, these types of plants have some kind of regulation system to shut down parts of the collectors. On the other hand, neither steam turbines nor generators can release more power to the grid than they are designed for, however, a portion of the electricity is consumed driving auxiliary equipment. [0003] In addition, these plants are characterized by very high energy consum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03G6/00F01K17/04F01K13/00
CPCF01K17/06Y02E10/46F03G6/067F01K13/006F01K17/04F03G6/00
Inventor 卡洛斯·安东尼奥·普拉特罗·高纳弗朗西斯科·布拉斯克斯·加西亚玛尔塔·雷东多·丘弗斯贾米·罗德里格斯·阿里瓦斯玛利亚·伊莎贝尔·巴里格特·迪兹帕布洛·弗里亚斯·马林
Owner UNIV MADRID POLITECNICA
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