塔式太阳能吸热器过热评价模型及镜场调度方法研究

RESEARCH ON SUPERHEATED EVALUATION MODEL OF RECEIVER ON SOLAR POWER TOWER PLANT AND DISPATCHING METHODS OF HELIOSTATS FIELD

针对吸热器在运行工作时可能出现的局部过热、能流密度分布严重不均、过热烧毁等问题,对吸热器危险状况进行等级划分,并引入模糊数学法建立吸热器的过热评价模型,给出判断吸热器是否过热的影响因子。根据吸热器过热评价结果,设计合理的目标点调整原则和方法,并通过仿真效果图进行验证,仿真结果表明:过热评价模型正确、可靠,目标点调整方法可有效减弱吸热器局部过热点的能流密度峰值。

Aiming at the probably occurring issues for receiver routine operation such as local overheated area of receiver, severe ununiformity of flux density distribution and overheated burnout, this paper was presented to solve above issues. The dangerous statuses of receiver were divided by different grades, and fuzzy mathematic method was adopted to establish superheated model and influencing factors were presented to estimate the receiver whether on superheated status or not. Based on the superheated evaluation of receiver results, aiming points adjustment principles and methods were designed reasonably and were verified by simulation figures. Finally, the simulation results showed that the superheated evaluation model is correct and reliable, and peak flux density of receiver local superheated area is effectively reduced by aiming points adjusting methods.