Power control method for power system and power system

An electronic device, applied in a power system, wherein:

• the power system comprises at least one power conversion device, wherein:
• each of the at least one power conversion device is connected to an alternating-current coupling point;
• each of the at least one power conversion device comprises a first converter and at least one direct-current module;
• each of the at least one power conversion device is configured to be connected to an external device via the alternating-current coupling point;
• and in each of the at least one power conversion device, each of the at least one direct-current module is connected to the first converter via a direct-current coupling point;
• and
• the electronic device comprises a processor, a memory, and a computer program stored on the memory and executable on the processor, wherein the computer program is configured to implement, when executed by the processor, a method for controlling a power of the power system, the method comprising:
• obtaining an expected direct-current side power response value corresponding to a target power conversion device among the at least one power conversion device;
• determining, based on the expected direct-current side power response value corresponding to the target power conversion device, and an actual electric signal and a first electric signal reference value at the alternating-current coupling point, a target alternating-current electric signal corresponding to the target power conversion device;
• and
• controlling, based on the target alternating-current electric signal, an operating state of the target power conversion device, to adjust a power supply relationship between the at least one power conversion device.