Journal
ANNALS OF NUCLEAR ENERGY
Volume 195, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.anucene.2023.110164
Keywords
Small Modular Reactor (SMR); Microgrids; RELAP5; Speed response; Steam turbine simulation model
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This study evaluates the performance of small modular reactors (SMRs) and their turbines in microgrid applications with intermittent renewable energy sources (RESs). The simulation analysis emphasizes the importance of the turbine's speed response capability in maintaining the stability of the grid frequency.
Small modular reactors (SMRs) are being considered in combination with intermittent renewable energy sources (RESs) for microgrids applications. The high penetration of RESs poses challenges to frequency regulation in the power system, particularly when operating off-grid. To maintain the stability of the grid frequency, the SMR turbine is expected to have a high capacity for speed response. However, there have been limited studies on the performance of isolated SMR turbines. Therefore, dynamic simulations under isolated grid conditions are necessary to evaluate both turbine and SMR performance. In this study, a representative SMR model based on RELAP5 and its corresponding control system based on the SCADE program were integrated into a nuclear plant analyzer, and the simulation of two extreme cases was implemented to evaluate the performance of the turbine and the SMR. The proposed simulation modelling scheme provides valuable insights for full-range simulation modelling of SMR/RES microgrids.
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