On July 18

2018

the first batch of 101 MW/202 MW·h battery energy storage power station on distributed grid side in China was put into operation in Zhenjiang City

Jiangsu Province. The effect of load shifting

frequency modulation and emergency response ability of the battery energy storage system(BESS)was fully utilized during the summer peak season. It fills the summer load gap of Zhenjiang Fangjin district

effectively increases the regulation and adjustment capability of power grid

and ensures its safe and stable operation. Up to now

the BESS has provided ancillary services such as automatic generation control(AGC)power response

peak shaving and frequency modulation to the grid for several times. This paper first analyzes the background and internal reasons of construction of the grid side BESS of Zhenjiang Power Grid

and then introduces its integration scheme from the aspects of battery selection and primary/secondary architecture. The AGC

emergency response control and primary frequency control are introduced and analyzed. Finally

enlightenment and suggestions are put forward from the aspects of technical standards establishment and inspection work development of energy storage integration

ancillary service market of energy storage station and distributed energy storage application research.