Performance analysis of IoT-enabled hydro-photovoltaic power systems considering electrical power mission chains

•Synergistically manage the operation of hydro-photovoltaic (HPV) power systems.•Develop a mission chain-based performance efficiency model of HPV power systems.•Quantify the capacity of the power supply mission fulfilment to satisfy the power demand.•Propose an importance measure-based restoration strategy to optimise the HPV performance.•Give a large-scale hydro-photovoltaic plant in China in winters and summers. Synergistically and complementarily managing the operation of hydropower plants and other weather-dependent renewable energy generation plants (e.g., solar energy plants) provides an effective measure to improve the performance efficiency (PE) of renewable energy. However, environmental uncertainty and physical system unavailability pose challenges in assessing the PE of the power generation. This paper proposes an approach to synergistically and complementarily managing the operation of hydro-photovoltaic (HPV) power systems in IoT under uncertain environments and develops a mission chain-based PE model for quantifying the capacity of the fulfilment of a power supply mission to satisfy users’ demand for power. An importance measure-based restoration strategy is then proposed to enhance the PE of an HPV power system (PEPS). The approach is examined by taking a large-scale HPV in China in the case study. The results show that, in winters and in summers, the PEPS is higher than PE of a photovoltaic power system and a hydropower system, respectively, and the PEPS with the importance measure-based restoration strategy is higher than that under the random restoration strategy, respectively. The findings not only lay the foundation for the complementary operation of hybrid renewable energy power systems but also provide a reference for the restoration in case of power cuts.