电力系统自动化2023，Vol.47Issue(24)：1-10,10.DOI:10.7500/AEPS20230322004
计及保护动作时间协调配合的双馈风电场故障穿越策略
Fault Ride-through Strategy for Doubly-fed Wind Farms Considering Coordination of Protection Operation Time
摘要
Abstract
The transient overvoltage in the grid-connected system of wind farms after fault clearing causes frequent wind turbine off-grid accidents.The main reason for this is the response delay of doubly-fed induction generator(DFIG)and reactive power compensation device during the withdrawal process of reactive power compensation after fault clearing.Therefore,based on the analysis on the rotor-side converter and grid-side converter of DFIG and the reactive power compensation limit of reactive power compensation device,this paper determines the reactive power compensation allocation strategy among different devices mentioned above.Furthermore,the dynamic response speed of different devices during reactive power compensation is analyzed,and based on this,an optimal design method for reactive power reference curve considering the operation time of main and backup protection is proposed.Compared with the existing reactive power compensation strategies,this method can significantly reduce the transient overvoltage problem at the point of common coupling during fault recovery while ensuring the fault ride-through capability.Finally,a simulation model is built based on a real-time digital simulation system,and the feasibility and superiority of the proposed method are fully verified through a large number of simulation cases.关键词
双馈风力发电机/换流器/故障穿越/协调控制/无功补偿装置Key words
doubly-fed induction generator(DFIG)/converter/fault ride-through/coordinated control/reactive power compensation device引用本文复制引用
李斌,张新雨,何佳伟,谢仲润,周博昊,盛亚如..计及保护动作时间协调配合的双馈风电场故障穿越策略[J].电力系统自动化,2023,47(24):1-10,10.基金项目
国家自然科学基金资助项目(52207129) （52207129）
天津市自然科学基金资助项目(22JCQNJC01030).This work is supported by National Natural Science Foundation of China(No.52207129)and Tianjin Municipal Natural Science Foundation of China(No.22JCQNJC01030). （22JCQNJC01030）
