浙江电力2024，Vol.43Issue(7)：10-19,10.DOI:10.19585/j.zjdl.202407002
新能源经柔直送出系统的VSG控制及故障穿越策略
Virtual synchronous generator control and fault ride-through strategies of VSC-HVDC system for new energy transmission
摘要
Abstract
For the VSC-HVDC system transmitting new energy,poor parameter matching between the new energy controller and the VSC-HVDC controller can lead to sub-synchronous and super-synchronous oscillation.To address this,an open-loop strategy based on virtual synchronous generator(VSG)control has been adopted.This strategy eliminates the inner and outer loops and the phase lock of traditional closed-loop control methods,optimizing the im-pedance characteristics of the VSC-HVDC system and reducing the risk of sub-synchronous and super-synchronous oscillations of new energy.It is also compatible with both islanded and grid-connected operating modes.To address bi-polar power imbalance and excessive short-circuit current after faults in open-loop control,bipolar power balancing and fault ride-through(FRT)strategies have been proposed.The effectiveness of the proposed VSG control and FRT strategies has been validated through RTDS simulations.关键词
柔性直流/虚拟同步发电机控制/开环控制/故障穿越/功率平衡Key words
VSC-HVDC/VSG control/open-loop control/FRT/power balance引用本文复制引用
陆海洋,汪楠楠,马秀达,随顺科,王佳成..新能源经柔直送出系统的VSG控制及故障穿越策略[J].浙江电力,2024,43(7):10-19,10.基金项目
国家电网公司科技项目(5100-202349004A-1-1-ZN) （5100-202349004A-1-1-ZN）
