4.6 Article

On the design of renewable-based utility plants using time series clustering

Journal

COMPUTERS & CHEMICAL ENGINEERING
Volume 170, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compchemeng.2022.108124

Keywords

Renewable-based utility plants; Representative periods; Uncertainty; Renewable hourly variation

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This work focuses on designing utility plants that use biomass, manure, solar radiation, and wind to generate steam and electricity. The authors propose an optimization framework that considers the hourly and interannual variability of solar and wind resources. Using clustering methods, they capture the resource variability and solve a multi-period optimization problem to minimize costs. The results show that the choice of representative days greatly affects the cost and plant topology.
This work addresses the design of utility plants incorporating technologies to process biomass, manure, solar radiation, and wind to generate steam and electricity. To capture the hourly and interannual variability of solar and wind resources, an optimization framework is proposed. The framework involves clustering methods to capture the variability of solar and wind resources and a multiperiod design optimization problem minimizing operating and investment costs. Results show that the number of representative days impacts both the minimum cost and the plant topology. To study this impact, a methodology using multiple samples of representative days and two approaches to select design solutions are proposed and discussed through extensive computational results. Overall, two plant topologies were identified, one integrating syngas and the other a biomass boiler. The biomass-based plant showed 1% lower investment and 10% lower operating costs but requires additional makeup power from an external grid.

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