The invention provides an alarm response method for a battery system of a high-capacity battery energy storage power station. The grading and rapid processing of alarm signals of the EMS and the PCS is organically realized through two-way or even three-way redundant alarm response channels on the basis of optimizing the communication mechanisms of the EMS, the PCS and the BMS, an energy managementsystem and an energy storage converter system of the energy storage power station are enabled to synchronously make corresponding action effects through diversified communication paths, and the statesynchronization and safe and stable operation of the energy management system, the energy storage converter system and the battery management system of the energy storage power station are ensured onthe basis of promoting the alarm signals to be reliably responded.