中国电机工程学报2026，Vol.46Issue(7)：2809-2823,中插15,16.DOI:10.13334/j.0258-8013.pcsee.242710
基于改进戴维南等值的风电并网系统暂态电压稳定性评估方法
Transient Voltage Stability Evaluation Method for Wind Power Grid-connected Systems Based on Improved Thevenin Equivalent
摘要
Abstract
With the development and utilization of renewable energy,the proportion of wind power in power system is growing rapidly.Due to the significant difference of transient voltage characteristics between wind turbines and synchronous generators,the voltage stabilization mechanisms have undergone profound changes,making it difficult for traditional analysis methods to evaluate the transient voltage level of the system accurately and quickly.In this paper,considering the transient voltage response characteristics of multi-heterogeneous power sources and loads,the voltage stability evaluation method of grid-connected wind power system under grid short-circuit fault is studied.First,from the perspective of fine identification of time-domain cross-section parameters,this paper proposes an improved Thevenin equivalent method to analyze transient voltage stability of wind turbines.Then,considering the transient voltage response characteristics of diverse power sources and loads,the equivalent model is established.On this basis,combined with the constraints of power transfer capability and power angle stability of the system,a quantitative evaluation method of system stability operation boundary and voltage stability is proposed.Finally,the effectiveness and robustness of the proposed stability margin index are validated through multiple simulation cases.关键词
风电并网系统/改进戴维南等值/暂态电压稳定/电压稳定评估Key words
grid-connected wind power system/improved Thevenin equivalence/transient voltage stability/voltage stability evaluation分类
信息技术与安全科学引用本文复制引用
赵林生,姚骏,王凯,金容宇,杨玉恒,王智辉..基于改进戴维南等值的风电并网系统暂态电压稳定性评估方法[J].中国电机工程学报,2026,46(7):2809-2823,中插15,16.基金项目
智能电网重大专项(2030)(2024ZD0801400) （2030）
国家电网有限公司科技项目(52272224000V).Project Supported by Smart Grid-National Science and Technology Major Project(2030)(2024ZD0801400) （52272224000V）
Science and Technology Project of State Grid Corporation of China(52272224000V). （52272224000V）
