Modular Modeling and Trust Region Based Real-Time Optimization for Load Changes in Modular High Temperature Gas-Cooled Reactor

The modular high temperature gas-cooled reactor nuclear power plant adopts an innovative "multi-modules with one turbine" power generation structure. Due to complex process mechanism, strict operation conditions, and lack of practical operation experience of the new technique, how to keep the power plant safe, stable, economical and efficient becomes an urgent problem to be solved. In this paper, a real-time optimization strategy based on mechanism model is adopted, an object-oriented modeling strategy is used to construct a modular equation oriented first principles model of nuclear power plant, a systematic multi-parameters simultaneous estimation method and sensitivity analysis method are used in parameter modification and model reconstruction during the optimization process. Based on previous work, a trust region framework is introduced to ensure the local calculation accuracy of the model. Finally, the article validates the effectiveness of the real-time optimization strategy through significant load changes in modular high temperature gas-cooled reactor nuclear power plant.