As we all know, photovoltaic power generation is the process of converting solar energy into electrical energy, its output power "depends on the day to eat", susceptible to solar radiation intensity, temperature and other environmental factors, with volatility, intermittency, instability and other characteristics. On the other hand, as the scale of grid-connected photovoltaic installations continues to grow, the demand for flexible and adjustable resources on the grid is becoming more and more urgent. For example, during peak hours, the grid is often overloaded; Or when the power grid has a large area of power outage, the user is in the dilemma of "no electricity available". Therefore, these pain points are undoubtedly a great challenge for distributed PV for self-use.