Method and system for controlling flywheel energy storage to participate in power grid frequency modulation

The invention provides a control method and system for flywheel energy storage participating in power grid frequency modulation, and belongs to the field of power grid frequency modulation, and the method comprises the steps: obtaining a frequency deviation, a primary frequency modulation load disturbance frequency deviation, the output power of a thermal power generating unit before load disturbance, the real-time power of the thermal power generating unit, and the current charge state of each flywheel energy storage unit; determining a first power vacancy according to the frequency deviation, the output power of the thermal power generating unit before the load disturbance and the real-time power of the thermal power generating unit; controlling the output power of each flywheel energy storage unit according to the first power vacancy and the current charge state of each flywheel energy storage unit; determining a second power vacancy according to the primary frequency modulation load disturbance frequency