As all generators are distributed in different areas among large scale power systems

the cooperative manipulation of the multi-generator system cannot operate well without consideration of the distance information of the generators. A distributed step-by-step finite-time consensus scheme for the heterogeneous battery energy storage system (BESS) is proposed in this paper

where the coordinated consensus can come into reality within a limited time

which is appealing for the electrical engineering community. To be concrete

at first

all BESSs are classified into several clusters according to their locations

and in each cluster

there is an active leader in charge of information receiving from outside. Then

in order to coordinate the multi BESSs

five inputs

which are function oriented

were used to achieve energy level balancing

active/reactive power sharing

and the consensus of voltage and frequency of the multi BESSs. Furthermore

the frequency and voltage restoration to the nominal values of the main grid were made possible by the introduction of a virtual leader

which is actually an external leader. Compared with the centralized methods

this control scheme is entirely distributed

and each BESS only utilizes the information of its own and its neighbors. In addition

this control is robust to the load perturbation and the plug-and-play of the communication topology. Finally

some simulation experiments are executed on the modified IEEE 57-bus system to verify the suggested scheme.