Abstract：Energy storage is a kind of high-quality flexible resource to deal with the uncertainty of power

systems with high penetration of new energy. It is of great significance to develop an optimized operation strategy

for energy storage that meets the uncertain demands of the system while considering the life loss of energy storage.

Therefore，an optimization operation strategy of energy storage was proposed to deal with the uncertainty of new

energy power. Firstly，aiming at the difficulty of quantifying the uncertainty of new energy power in new energy

high-penetration power system，quantile regression analysis and Gaussian mixture model were used to generate the new energy set of the system to describe its uncertainty. Then，based on the life loss model of energy storage，the optimized operation model of power systems with high penetration of new energy containing energy storage was constructed，and the energy storage optimized operation power that meets the new energy demand of power systems and its economically optimal was calculated. Finally，an example simulation was carried out based on the actual operation data of a regional power grid to verify the effect of the proposed operation strategy，and the optimal operation results of energy storage meeting different uncertainty scenarios of the power system were analyzed.

      Key words：uncertainty of new energy；optimization operation strategy of energy storage；quantile regression

analysis；Gaussian mixture model；life loss model of energy storage