电力系统保护与控制2025，Vol.53Issue(1)：24-36,13.DOI:10.19783/j.cnki.pspc.240187
基于广义瞬时能量函数法的大规模直驱风电场并入弱交流电网的短期电压稳定性分析
Analysis of short-term voltage stability of a large-scale direct-drive wind farm integrated into a weak AC grid based on the generalized instantaneous energy function method
摘要
Abstract
With the integration of large-scale direct-drive wind farms into weak AC grids,the complex interactions between the two make the short-term voltage stability problem of the system after perturbation more and more prominent.How to accurately analyze the short-term voltage stability of the grid-connected system of direct-drive wind farms after disturbances online is a key challenge.To this end,a short-term voltage stability analysis method based on the generalized instantaneous energy function method is proposed.First,a dynamic model of the grid-connected system of direct-drive wind farms in the phase-locked loop dq coordinate system is established.Then,the generalized instantaneous energy function of the grid-connected system of direct-drive wind farm is constructed according to the principle of reactive power conservation.Based on the generalized instantaneous energy function,dynamic reactive power energy security regions(DRPESR)are proposed to evaluate the short-term voltage stability of the system online.A hierarchical energy structure is constructed to analyze the short-term voltage destabilization mechanism of the grid-connected system of direct-drive wind farms.Finally,the time-domain simulation results based on Matlab/Simulink demonstrate the validity of the generalized instantaneous energy function and the accuracy of the proposed criterion.关键词
直驱风电场/弱交流电网/短期电压稳定/能量函数Key words
direct-drive wind farms/weak AC power grid/short-term voltage stability/energy function引用本文复制引用
李东东,吴祥文,孙梦显,赵耀,罗丁,钟伟伦,刘一鸣..基于广义瞬时能量函数法的大规模直驱风电场并入弱交流电网的短期电压稳定性分析[J].电力系统保护与控制,2025,53(1):24-36,13.基金项目
This work is supported by the National Natural Science Foundation of China(No.52377111). 国家自然科学基金项目资助(52377111) （No.52377111）
