Abstract: Steam power system is an important part of petrochemical enterprises, but also the main link of energy consumption, with great energy-saving potential. Optimization of steam power system structure and operating parameters can significantly reduce operating costs, which is of great significance in saving energy, reducing carbon and creating efficiency in petrochemical enterprises. The basic methods, research progress and application of steam power system optimization were reviewed, and the optimization methods of steam power system, such as heuristic method, meta-heuristic method, thermodynamic objective method and mathematical programming method, were emphatically introduced. On this basis, the uncertainty optimization and multi-objective optimization of steam power system were reviewed. The uncertainty factors of steam power system were summarized, and the research progress of steam power system optimization under uncertainty was introduced. The optimization objectives of steam power system were summarized, and the multi-objective optimization modeling and solution methods of steam power system were introduced. Finally, the development direction of steam power system optimization was proposed.

Key words: steam power system, optimization method, uncertainty, multi-objective optimization