Demand for energy storage surges as power system stability is critical

System stability is the primary condition for the safe operation of the grid, and large-scale grid connection of scenery brings greater challenges for system stability. Various random disturbances in the grid operation (sudden load changes, lightning, equipment failure, etc.) will cause instability in the power system, and the increasing share of scenery in the total installed capacity makes its inherent intermittency, volatility, low inertia, and strong randomness to the stability of the power system to cause greater impact, in addition to the large number of power electronics access will also exacerbate the vulnerability of the grid, which brings greater challenges to system stability. This brings greater challenges to system stability.

Energy storage system can effectively improve the stability of the power system. In photovoltaic power plants, the root cause of transient shocks from energy storage and photovoltaic network switching is the starting point, and current compensation is introduced to convert the storage battery power system to follow the photovoltaic power output, thus reducing transient shocks and achieving smooth switching. In the wind storage coordination control, based on the wind turbine speed regulation strategy using variable proportional coefficients, real-time tracking of energy storage system discharge power, wind power output prediction deviation strategy and other control strategies, the goal of smooth wind power is achieved.