Abstract The integrated solar combined cycle power plants are currently the most efficient way of converting solar energy into electricity. Increasing the thermal efficiency of these plants depends strongly on the dynamic characteristics of off-design conditions and the operational control strategies. An innovative mathematical model has been presented to investigate the dynamic behavior of an Integrated Solar Combined Cycle power plant in Hassi R'mel, Algeria under off-design conditions in this study. The proposed model is analyzed via computer simulation on the Matlab environment using the recent operating parameters of the plant and the meteorological data recorded by the Abener hybrid solar-gas central of Hassi R'mel. The simulation results indicate that the experimental data of the outlet temperature of the solar field and the power generated by the plant verify the predictions found by the model. The root mean square error and mean absolute error range respectively between 4.03 and 4.12 °C and 1.45–1.80 °C for the outlet temperature of the solar cycle and 1.61–1.72 MW and 0.67–0.75 MW for the net power under specified experimental conditions. It is revealed that the off-design conditions, particularly the direct normal irradiance and the wind speed, affect the Integrated Solar Combined Cycle performance significantly. The presented model is an effective tool that can provide a wealth of information to power plant operators and designers during operational plant design, and management to mitigate the adverse impact of possible off-design conditions on power production and to boost power production by management strategies.

中文翻译：

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非设计条件下集成太阳能联合循环发电厂的创新动态模型

摘要 太阳能联合循环电站是目前太阳能转化为电能最有效的方式。提高这些电厂的热效率很大程度上取决于非设计条件的动态特性和运行控制策略。在本研究中，提出了一种创新的数学模型来研究阿尔及利亚 Hassi R'mel 的集成太阳能联合循环发电厂在非设计条件下的动态行为。使用工厂最近的运行参数和 Hassi R'mel 的 Abener 混合太阳能-天然气中心记录的气象数据，通过在 Matlab 环境上的计算机模拟对所提出的模型进行了分析。仿真结果表明，太阳能场出口温度和电厂发电量的实验数据验证了模型的预测结果。在指定的实验条件下，太阳循环出口温度的均方根误差和平均绝对误差范围分别为 4.03 和 4.12°C 和 1.45-1.80°C，净功率的均方根误差和平均绝对误差范围分别为 1.61-1.72 MW 和 0.67-0.75 MW。结果表明，非设计条件，特别是直接法向辐照度和风速，显着影响太阳能联合循环的性能。所提出的模型是一种有效的工具，可以在运行电厂设计期间为电厂运营商和设计人员提供丰富的信息，