含双馈风机接入的电力系统送端暂态稳定性研究  

Study on Transient Stability of Power System with Doubly Fed Wind Turbine Connection at the Supply End

作　　者：刘洪波 于汉清 Liu Hongbo;Yu Hanqing(State Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,under Ministry of Education,Northeast Electric Power University,Jilin Jilin 132012,China)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林132012

出　　处：《电气自动化》2024年第1期14-19,共6页Electrical Automation

摘　　要：针对高渗透率风电接入送端系统,基于静止无功补偿器的风机等值阻抗模型,研究双馈风机在接入不同容量比例、不同位置、不同接入方式下对系统送端功角稳定性的影响。推导了单端送电系统同步机电磁功率特性;修正了同步机的功角曲线,利用等面积定则得出系统故障时加速面积和减速面积的变化,以及使用新型等效模型在不同因素下对系统暂态稳定性的影响。最后通过仿真软件验证理论分析的正确性。结果表明,风机等容量替换同步机有利于系统暂态稳定,风电直接接入不利于系统暂态稳定,风机接入位置越靠近系统侧越稳定。新型等效模型增强了系统暂态稳定性。A wind turbine equivalent impedance model based on static reactive power compensator was used to study the impact of doubly fed wind turbines at different capacity ratios,locations,and connection methods on the stability of the power angle of the high permeability wind power supply system.Derive the electromagnetic power characteristics of the synchronous machine in the single-ended power transmission system,correct the power angle curve of the synchronous generator,use the equal area rule to determine the changes in acceleration and deceleration areas during system faults,and obtain the impact of using a new equivalent model on system transient stability under different factors.Finally,the correctness of the theoretical analysis was verified through simulation software.The results indicate that replacing synchronous generators with wind turbines of equal capacity is beneficial for system transient stability,while direct access to wind power is not conducive to system transient stability.The closer the wind turbine is connected to the system side,the more stable it is.The new equivalent model enhances the transient stability of the system.

关 键 词：双馈风机 风机等效模型 接入比例 接入位置 接入方式 功角稳定 

分 类 号：TM712[电气工程—电力系统及自动化]