电气传动2025，Vol.55Issue(10)：19-29,11.DOI:10.19457/j.1001-2095.dqcd26046
海上风电孤岛经VSC-HVDC并网系统的故障穿越策略
Fault Ride-through Strategy for Offshore Wind Power Islanding via VSC-HVDC Grid-connected System
摘要
Abstract
In order to solve the DC over-voltage problem caused by surplus power when short circuit fault occurs in the recipient grid of offshore wind power via voltage source converter high voltage direct current transmission(VSC-HVDC)delivery system,a joint fault ride-through strategy based on surplus power allocation of dissipation devices and offshore wind farm voltage reduction control was proposed.Firstly,the mechanism of DC over-voltage of the VSC-HVDC system caused by power imbalance was analyzed,and the main influencing factors of DC over-voltage were extracted.Secondly,the input power and output power relationship model of the VSC-HVDC system was constructed to allocate the surplus power of the system without measures and optimize the resistor resistance of the energy dissipation device based on it.Then,the fault ride-through strategy was proposed based on the design strategy of energy dissipation resistor in conjunction with the voltage reduction operation of the offshore wind island and the technicality of the energy dissipation device was analyzed.Finally,the effectiveness of the proposed control strategy was verified on PSCAD/EMTDC.Simulation results show that the proposed control strategy can solve the problem of DC overvoltage in the VSC-HVDC system caused by short-circuit faults at the receiving end of the grid,avoiding the risk of offshore wind power being disconnected from the grid via the VSC-HVDC grid-connected system due to short-time faults.关键词
海上风电/柔性直流输电/故障穿越/耗能装置/孤岛控制/盈余功率Key words
offshore wind power/voltage source converter high voltage direct current transmission(VSC-HVDC)/fault ride-through/dissipation device/island control/surplus power分类
信息技术与安全科学引用本文复制引用
刘福锁,丁芮,王玉,成硕,王琦,黄锡芳..海上风电孤岛经VSC-HVDC并网系统的故障穿越策略[J].电气传动,2025,55(10):19-29,11.基金项目
国家重点研发计划(2022YFB2402700) （2022YFB2402700）
智能电网保护和运行控制国家重点实验室资助项目(SGNR0000KJJS2302146) （SGNR0000KJJS2302146）
