电力系统自动化2025，Vol.49Issue(6)：198-207,10.DOI:10.7500/AEPS20230918003
基于动态无功支撑的双馈风电机组高电压穿越改进控制策略
Improved Control Strategy of High Voltage Ride-through for Doubly-fed Wind Turbines Based on Dynamic Reactive Power Support
摘要
Abstract
The high proportion of renewable energy access brings great risks to the safe and stable operation of the power system.Improving the fault ride-through ability of wind turbines can effectively avoid the occurrence of large-scale wind turbine off-grid accidents,which is particularly important for the safe and stable operation of the power grid.First,by analyzing the phasor control theory of pulse-width modulation voltage source converter,it is found that doubly-fed wind turbines in super-synchronous and sub-synchronous operation conditions are prone to the problem of out-of-control of grid-side converters during the transient overvoltage of the power grid,which can not effectively play the role of DC voltage regulation of the converter,and eventually lead to the high bus voltage and trigger protection,which may cause the wind turbine off-grid in serious cases.Then,the power factor angle of the converter is adjusted by the grid-side and the rotor-side converters,and the inductive reactive current is continuously injected into the power grid.The improved control strategy of high voltage ride-through based on the power factor angle adjustment of the converter is proposed by using the voltage division effect of the filter impedance,so as to meet the control requirements of the voltage phasor of the converter and solve the problem that the DC-side bus cannot regulate the voltage.In addition,a more detailed segmented control scheme is developed according to different voltage intervals,which is conducive to the rapid voltage recovery of the power grid.Finally,the accuracy of fault characteristic analysis of doubly-fed wind turbines under transient overvoltage and the feasibility of the proposed improved control strategy are proven by Simulink simulation experiments.关键词
双馈风电机组/高电压穿越/无功支撑/变流器/相量控制Key words
doubly-fed wind turbine/high voltage ride-through/reactive power support/converter/phasor control引用本文复制引用
颜湘武,雷国庆,蔡光,雷健华,马腾宇..基于动态无功支撑的双馈风电机组高电压穿越改进控制策略[J].电力系统自动化,2025,49(6):198-207,10.基金项目
北京市自然科学基金资助项目(3212037). This work is supported by Beijing Natural Science Foundation of China(No.3212037). （3212037）
