1500V DC SPD is mainly used in large photovoltaic power plants, especially in scenarios where high voltage is required to further reduce line loss and improve system efficiency. These systems are typically installed on open ground or on the roofs of large buildings. 1500V DC SPD is also suitable for energy storage systems, especially in scenarios that require high energy density and high power density. These systems are typically used for frequency regulation and peak shaving, assisting in the integration of renewable energy into the grid, microgrids, and industrial and commercial energy storage applications.