Flexible DC system frequency active support adaptive coordination control method and device, medium and product

The invention discloses a flexible DC system frequency active support adaptive coordination control method and device, a medium and a product, and relates to the field of flexible DC power transmission system frequency stability. Comprising the following steps: constructing a first coupling relationship between a receiving-end power grid frequency and a direct-current voltage of the flexible direct-current system, constructing a second coupling relationship among the direct-current voltage, the receiving-end power grid frequency and the input number of converter station sub-modules, and determining inertia support adaptive decoupling control of a sending-end converter station and a receiving-end converter station; designing a self-adaptive recovery strategy and a self-adaptive recovery strategy control parameter based on the safe operation constraint of the flexible DC system; constructing a frequency active support multi-agent coordination control strategy considering a frequency modulation dead zone; accord