Based on the platform of RELAP/GSE combined with MATLAB/Simulink,a simulation model is established for the scheme of coupling Stirling thermoelectric conversion module in small sodium-cooled fast reactors,so as to study the load following operation capability and operation mode of the nuclear power supply system of a small sodium-cooled fast reactor.In the extreme case of load step and no control system intervention,the load-following capability of each loop system of nuclear power supply is tested in a hierarchical manner,and a control scheme suitable for load-following mode is proposed and verified.The simulation results show that the power supply system has the ability to withstand±10％load step changes and has strong load-following capability to cooperate with grid peak shaving.At the same time,this research proposes two coordinated control schemes for the load-following operation mode of the power supply system,and provides a coordinated control scheme suitable for the load-following operation mode of the small sodium reactor power supply through simulation analysis and comparison.
Small sodium-cooled fast reactorStirling engineLoad-followingControl schemeSimulink
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