Reactor-engine coordinated control system and method for steam extraction and heat supply unit of nuclear power plant

The invention relates to a nuclear power plant steam extraction heat supply unit reactor-engine coordination control system and method. The nuclear power plant steam extraction heat supply unit reactor-engine coordination control system comprises a pressure measurement module, a steam extraction heat supply flow measurement module, a data acquisition module, a load determination module and a load output module. A steam turbine load value is determined based on the above modules and then sent to a reactor power control system. According to the technical scheme provided by the invention, the operation parameter error of the primary loop system of the reactor is reduced, the operation stability of the nuclear island system during the heat supply period of the nuclear power unit is improved, and meanwhile, the disturbance of the primary loop parameters of the reactor during the heat supply load change period is avoided through undisturbed switching of multiple operation control curves; and the operation safety an