太阳能热发电厂厂用电率计算方法分析
Analysis of Calculation Method for Solar Thermal Power Plant Auxiliary Power Rate
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摘要:
文章主要解决了太阳能热发电设计领域的厂用电计算思路及方法的问题。太阳能热发电已成为我国新能源发电的重要发展方向，太阳能热发电厂用电率的计算目前还没有相关的规程规范。在研究过程中，采用对太阳能热发电厂的运行模式与火力发电厂运行模式进行对比分析的方法，得出火力发电厂厂用电率的计算方法不适用于太阳能热发电厂的研究结果。通过对槽式太阳能热发电厂集热场系统、吸热传热系统、储热系统、常规岛系统分别进行分析，提出了槽式太阳能热发电厂厂用电量的计算方法，得出了太阳能热发电厂应采用长序列代表年辐照值，逐时计算代表年的发电量和厂用电量，以其比值来计算厂用电率的结论；提出了槽式太阳能热发电厂厂用电率的计算思路和方法，可供塔式太阳能热发电厂参考，对我国太阳能热发电厂的设计发展起到推动作用。 Abstract:The article mainly solves the problem of the idea and method of the calculation of the auxiliary power in the field of solar thermal power plant design. Solar thermal power generation has become an important development direction of China's new energy power generation, and now there is no relevant procedure about the calculation method of solar thermal power plant auxiliary power rate. In the course of the study, we compared and analyzed the running mode of solar thermal power plant and fossil-fired power plant. Then we found the research result that the calculation method of fossil-fired power plant auxiliary power rate was not applicable to the solar thermal power plant. Based on the analysis respectively of collection field system, heat absorption and transfer system, heat storage system and conventional island system of parabolic trough solar power plant, this paper put forward a calculation method for auxiliary power consumption of parabolic trough power plant. In this paper, a conclusion is drawn that the solar thermal power plant should use long sequence typical year solar radiation value to hourly calculate the typical year's power generation and auxiliary power consumption, and auxiliary power rate is the ration of auxiliary power consumption and power generation. The calculation idea and method of auxiliary power rate of parabolic trough solar power plant can be used as an reference for the tower solar power plant, and it promotes the devolpment of solar thermal power plant design in China.
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