METHOD AND APPARATUS FOR SUPPRESSING OSCILLATION ON DIRECT-CURRENT SIDE OF FLEXIBLE DIRECT-CURRENT POWER TRANSMISSION SYSTEM, AND COMPUTER-READABLE STORAGE MEDIUM AND ELECTRONIC DEVICE

Disclosed in the application are a method and apparatus for suppressing oscillation on a direct current (DC) side of a flexible DC transmission system (FDCTS), a computer-readable storage medium, and an electronic device. The method includes the following operations. Single-phase active power on an alternating current (AC) side of a converter valve, a DC voltage reference value of a DC transmission system, a bridge arm current, and a circulating-current control voltage compensation value are acquired. A DC component reference value of a bridge arm current of each phase is calculated according to the single-phase active power on the AC side of the converter valve and the DC voltage reference value of the DC transmission system. A DC component of the bridge arm current of each phase is calculated according to the bridge arm current. A voltage compensation value is calculated according to the DC component reference value of the bridge arm current and the DC component. A corrected bridge arm modulated wave is generated according to the voltage compensation value and the circulating-current control voltage compensation value. According to the application, a problem of oscillation on the DC side may be effectively suppressed, and a stable operation of FDCTS may be achieved, thereby improving reliability of the system. Furthermore, only an electrical quantity signal on a standard interface of an existing Valve-Based Controller (VBC) is used, without requiring additional devices, thereby reducing complexity of the device.