Operation Strategy of Solar-aided Coal-fired Power Plant with Heat Storage System

Solar-aided coal-fired power system is the integration of solar collector subsystem and traditional coal-fired power plant. The heat demand of first high pressure heater in coal-fired power plant is replaced by the energy from solar collector field and heat storage system. Solar direct normal irradiation (DNI) and coal-fired power plant load condition have great influence on the operation scheme of solar-aided coal-fired power system. This study established the model of solar-aided coal-fired power system with heat storage system and analyzed the operation strategy of the integrated system in different DNI and coal-fired power plant off-design load conditions. The flow rate change of valves in a typical day is calculated.