中国电机工程学报2026，Vol.46Issue(12)：4867-4878,中插4,13.DOI:10.13334/j.0258-8013.pcsee.242707
基于电流协同优化的柔直输电系统受端换流站故障穿越控制方法
A Receiving-end Fault Ride-through Method Based on Current Coordinated Optimization Control for MMC-HVDC
摘要
Abstract
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.关键词
柔性直流输电(MMC-HVDC)/故障穿越(FRT)/协同控制/直流电压越限Key words
modular multilevel converter based high voltage direct current(MMC-HVDC)/fault ride-through(FRT)/coordinated control/DC overvoltage分类
信息技术与安全科学引用本文复制引用
贾科,李佩烨,毕天姝,刘昊霖,张旸,董学正..基于电流协同优化的柔直输电系统受端换流站故障穿越控制方法[J].中国电机工程学报,2026,46(12):4867-4878,中插4,13.基金项目
国家优秀青年科学基金项目(52322703) （52322703）
国家自然科学基金(面上项目)(52277097).Outstanding Youth Science Foundation of China(52322703) （面上项目）
Project Supported by National Natural Science Foundation of China(General Program)(52277097). （General Program）
