When an AC fault occurs at the receiving-end grid of modular multilevel converter based high voltage direct current (MMC-HVDC)

it should have fault ride-through (FRT) capability. However

no FRT standards have been established for MMC-HVDC yet. Existing studies mostly reference the national standards for integrating onshore wind farms into power system

which involve proportionally generating reactive current to elevate the point of common coupling (PCC) voltage at the receiving-end converter station

reducing the active power output. When a high level of active power is injected into the sending-end converter station

active power accumulation results in significant DC overvoltage in MMC-HVDC systems. To address this issue

this paper derives an analytical expression for the active power output and reactive current of receiving-end converter. On this basis

a receiving-end FRT control method for MMC-HVDC is proposed

based on current coordinated optimization. This approach minimizes active power accumulation by balancing and adjusting the ratio of reactive and active current

while ensuring voltage safety at the PCC. Simulation results show that compared with existing projects

the proposed method greatly reduces the rate of DC voltage rise during the initial stage of a fault-by up to 100%-enhancing the FRT capability of the MMC-HVDC receiving-end converter station.