Method for calculating average value of output power of photovoltaic power generation system in microgrid

The invention provides a method for calculating an average value of output power of a photovoltaic power generation system in a microgrid, and solves the problem that an existing photovoltaic power generation output power calculation method which only takes a single factor as an uncertainty influence factor cannot reflect the actual power output condition of a photovoltaic power generation system.The method comprises the steps of collecting data information of sunlight intensity, sunlight duration, sunlight shadow and sunlight deflection angle in a microgrid; constructing a data matrix, and solving an average value of the collected data; constructing a fuzzy clustering center matrix; initializing a fuzzy clustering center matrix; iteratively calculating an element optimal value of the fuzzy clustering matrix corresponding to the fuzzy clustering center matrix and an optimal value of the fuzzy clustering center matrix through a fuzzy clustering analysis method; and calculating the average value of the current