In a significant advancement for solar energy technology, the CGN Delingha 50 MW parabolic trough solar power plant has made strides in optimizing its operational efficiency through innovative modeling techniques. This facility, recognized as China’s first commercial trough solar power station, comprises 190 heat collecting loops that harness solar energy. However, the complexity of hydrodynamic characteristics within the solar field has posed challenges, particularly in balancing the flow of the heat-absorbing medium and stabilizing outlet temperatures.
Lead author Lengge Si from North China Electric Power University has spearheaded a study that utilizes modular modeling to address these issues. By establishing a mathematical model for the plant’s main equipment and constructing a dynamic model encompassing the solar field, steam generation system, heat storage system, and steam turbine system, the research aims to streamline operations. “The error of the built model in steady-state is less than 2%, which indicates the reliability of our approach,” Si noted, emphasizing the accuracy achieved in simulating real-time operations.
The research leverages the parallel computing capabilities of the STAR-90 real-time dynamic simulation platform, allowing for real-time coupling calculations between the various systems. This integration not only enhances operational stability but also offers a framework that can be applied to other large-scale trough solar thermal power plants, potentially transforming the industry.
The implications of this research extend beyond technical improvements. By enhancing the efficiency of solar thermal power plants, there is a potential for increased commercial viability and competitiveness within the renewable energy market. As countries strive to meet ambitious carbon reduction targets, optimizing solar energy systems becomes crucial. Si’s work provides a roadmap for future developments, paving the way for more efficient and reliable solar power generation.
This groundbreaking study was published in the ‘SolarPACES Conference Proceedings,’ highlighting its relevance to the fields of Concentrating Solar Power (CSP) and dynamic simulation modeling. As the energy sector continues to evolve, research like this is instrumental in shaping a sustainable and economically viable future for solar energy.
