In order to deal with the problem of net load fluctuation due to access of large-scale distributed PV to the distribution network

a kind of bi-level energy storage planning method considering demand response is proposed. Firstly

the flexibility requirements of distribution network under different photovoltaic permeability and the operation characteristics of various flexibility resources are analyzed. Then

the typical scenarios of distributed photovoltaic and load are obtained by principal component analysis method and hierarchical clustering algorithm. After that

a bi-level planning model for distribution network energy storage considering demand response is set up. The upper planning layer optimizes the energy storage planning scheme with the goal of minimizing the comprehensive cost. The lower operating layer minimizes the operating cost target

and considers the controllable objects such as energy storage

price-based demand response and interruptible load to solve the operation strategy of each typical scenarios. At the same time

for effectively solving the bi-level planning model

the double-layer model is converted into a single-layer model by using the approach of upper and lower level correlation and solved by Gurobi solver. Finally

the IEEE33 node system is used to analyze the different photovoltaic permeability of the distribution network and the effectiveness of the proposed method is verified.