[Significance] The installed capacity of wind and photovoltaic power has reached 1 680 GW in China. However

their inherent volatility and intermittency pose higher demands on the flexibility and regulation capability of the power system. Electrochemical energy storage(EES) has emerged as a key technology to support highpenetration renewable energy integration owing to its advantages such as rapid response capability

high energy conversion efficiency

and favorable economics. [Discussion] This review systematically explores the core issues of integrated electrochemical energy storage power stations and renewable power plants. In terms of system design

different topological configurations of EES connected to wind power

photovoltaics

and hybrid wind-photovoltaic power plants are compared

with their technical and economic performances being assessed for connection at different locations(DC side

AC side

and substation side). The analysis indicates that centralized AC-side integration holds an engineering-dominant position

while DC-side coupling and AC/DC hybrid configurations also show technical potential. For operational evaluation

focusing on three typical application scenarios(smoothing power fluctuations

improving generation forecast accuracy

and enhancing peak-shaving ability)

this paper places technical indicators(e.g.

fluctuation suppression effect

charge/discharge characteristics) and economic indicators(e.g.

cost-effectiveness

investment return) within the same framework for analysis

thereby providing a quantitative basis for the optimal operation and informed decision-making of source-storage coupled systems. With regard to planning and configuration

a generalized methodology characterized as “scenario-driven

strategy-coupled

and capacity-adapted” is proposed

and the control strategies for energy storage operation as well as the power and capacity sizing methods under different scenarios are summarized. [Prospect] Finally

this review highlights future key directions including coupling with electricity market mechanisms

integration of artificial intelligence technologies

and development of multi-type energy storage complementary integration. This review aims to provide a systematic theoretical reference and technical guidance for the planning

design

and operation of sourcestorage coordination in new-type power systems.