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Steam temperature stability in a direct steam generation solar power plant

机译：直接蒸汽发电太阳能电站的蒸汽温度稳定性

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Direct steam generation (DSG) is one alternative to the current oil-based parabolic trough solar thermal power plants. Within the German research project ITES, the dynamic behavior of a DSG collector field and the interactions with the conventional power block are assessed in detail. A transient solar field model developed by DLR is used to simulate the steam temperature behavior. Artificial irradiance disturbances as well as real irradiance data are used as input to the system. The resulting main steam temperature gradients are then analyzed by Siemens considering the standards for steam turbines. This paper presents the transient simulation results of the steam temperature as well as the corresponding results of the steam turbine analysis. It is found that the occurring temperature gradients are challenging for a safe turbine operation, if a conservative control system is used. Therefore, the use of an additional thermal inertia to stabilize the steam temperature is suggested. Its impact is also analyzed and discussed in this paper.
机译：直接蒸汽发电（DSG）是当前基于油的抛物槽太阳能热电厂的一种替代选择。在德国ITES研究项目中，详细评估了DSG收集器场的动态行为以及与常规动力块的相互作用。 DLR开发的瞬态太阳场模型用于模拟蒸汽温度行为。人工辐照度干扰以及实际辐照度数据都用作系统的输入。然后，由西门子根据蒸汽轮机的标准对所得的主要蒸汽温度梯度进行分析。本文介绍了蒸汽温度的瞬态模拟结果以及蒸汽轮机分析的相应结果。已经发现，如果使用保守的控制系统，则发生的温度梯度对于涡轮机的安全运行具有挑战性。因此，建议使用附加的热惯性来稳定蒸汽温度。本文还对其影响进行了分析和讨论。

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