机械与电子2026，Vol.44Issue(2)：112-119,8.
提高互联系统频率稳定的风电场与VSC-MTDC协同控制策略
Collaborative Control Strategy of Wind Farms and VSC-MTDC for Enhancing Frequency Stability in Interconnected Systems
摘要
Abstract
In response to the growing frequency stability concerns caused by large-scale integration of renewable energy,this study investigates a coordinated control strategy for wind farms connected through voltage source converter based multi-terminal high voltage direct current(VSC-MTDC)systems.Wind farms are equipped with additional inertia and droop control to release rotor kinetic energy for frequency regulation.The converter stations employ virtual inertia control to establish a correlation between AC fre-quency and DC voltage,thereby utilizing DC capacitors energy for power regulation.Meanwhile,the power margin of converter stations is introduced to adjust droop coefficients,enabling rational redistribution of power imbalances in the DC system and mutual power support among AC systems.Furthermore,the fre-quency deviation is used as the input signal,and processed through a first-order low-pass filter,where high-frequency components are applied to the rotor control of wind turbines and the low-frequency com-ponents to the droop control of converter station,synergistically improving the frequency response of the AC system.Simulation results validate the effectiveness of the proposed method,demonstrating its capability to significantly increase the equivalent inertia of the system and improve frequency stability performance.关键词
VSC-MTDC/虚拟惯性/功率裕度/自适应下垂/分频控制Key words
VSC-MTDC/virtual inertia/power margin/adaptive droop/frequency-band decoupling control分类
信息技术与安全科学引用本文复制引用
李杰,李鹏,乔国强,李从善..提高互联系统频率稳定的风电场与VSC-MTDC协同控制策略[J].机械与电子,2026,44(2):112-119,8.基金项目
国家自然科学基金面上项目(52377125) （52377125）
河南省科技攻关项目(242102240125) （242102240125）
