Method for adjusting sea water desalination load by using water storage tank

The invention discloses a method for adjusting a sea water desalination load by using a water storage tank. The method comprises the steps of calculating illumination intensity and wind speed vnew (t) considering a forecast error, calculating photovoltaic power generation output power Ppv (t) according to the illumination intensity, calculating wind power generation system output power Pwt (t) according to the wind speed vnew (t), calculating sea water desalination load power according to resident water demand, according to the photovoltaic output power, the wind power output power and the seawater desalination load power, solving and calculating the change condition of the water volume of the water storage tank, then determining the new operation condition of the seawater desalination unit, and completing adjustment of the seawater desalination load. The sea water desalination load is flexibly adjusted by utilizing the water storage tank, redundant electric quantity converted from clean energy is converted i