Extensive concern has arisen on how to evaluate and test the actual working characteristics of energy storage battery

while no authoritative method gets established yet. Based on several duty cycle of battery under the typical application scenarios

this paper studies the eigenfactors and static configurations with different confidence coefficients while neglecting the time-series correlation. Then a method of extracting typical duty cycle curves of battery based on the time-series correlation analysis and the clustering method is proposed. The periodic variational regularity

operating modes

and mode exchanging orders and frequency of energy storage battery output when operating are analyzed

and the operation track of state of charge(SOC)of battery is described. The duty cycle curves

which can control and evaluate the energy storage battery output in the real-time and SOC of battery

are extracted. Finally

taken the application of a battery energy storage system tracking the planed wind power output of a certain wind farm as an example

the effectiveness and feasibility of the proposed method is verified.