柔直系统储能调频-阻抗重塑振荡抑制策略  

Energy Storage Frequency Modulated-impedance Remodeling Oscillation Suppression Strategy for MMC-HVDC Transmission System

作　　者：刘懿 唐雨晨 林毅 赵晋斌 LIU Yi;TANG Yu-chen;LIN Yi;ZHAO Jin-bin(Shanghai University of Electric Power,Shanghai 200090,China;State Grid Fujian Economic Research Institute,Fujian 350000,China;Engineering Research Center of Offshore Wind Technology Ministry of Education(Shanghai Universityof Electric Power),Shanghai 200090,China)

机构地区：[1]上海电力大学,电气工程学院,上海200090 [2]国网福建省电力有限公司经济技术研究院,福建福州350000 [3]教育部海上风电技术工程研究中心(上海电力大学),上海200090

出　　处：《电力电子技术》2025年第3期91-94,111,共5页Power Electronics

基　　金：国家电网有限公司科技项目(52130N22001H)。

摘　　要：储能一般用于改善海上风电的出力和涉网特性,对提升送出系统稳定水平也具有潜在效果。本文提出一种基于储能等效电容的电压-频率响应的柔性直流(MMC-HVDC)网侧电压控制策略,通过构建电压偏差和频率偏差的耦合系数,将发生振荡时的电网频率偏差信号引入网侧换流器的直流电压控制环节,进而重塑MMC-HVDC阻抗,以提高系统阻抗比的相位裕度,兼顾了振荡抑制和频率惯量主动支撑功能。通过Typhoon HIL 404实验平台验证了储能附加控制策略对并网系统宽频振荡的抑制效果。A novel voltage-frequency response control strategy for MMC-HVDCsystems is introduced,leveraging ener-gy storage to enhance grid-side voltage regulation and system stability.Byintegrating a coupling coefficient between voltage and frequency deviations,this approach incorporates grid frequency variations during oscillations into the con-trol loop of the grid-side converter.This modulation of the MMC-HVDCimpedance not only suppresses oscillations but also supports frequency inertia,enhancing the overall system resilience.The efficacy of this strategy in mitigating wide-frequency oscillations is demonstrated using the Typhoon HIL404 experimental platform.

关 键 词：海上风电:储能 阻抗重塑 振荡抑制 

分 类 号：TM92[电气工程—电力电子与电力传动]