摘要
建立了含机电暂态的直流风电机组动态模型,包括风力机空气动力学模型、传动链模型、发电机模型、AC-DC整流器模型和DC-DC变换器模型,给出了风力机变桨控制、AC-DC整流器功率控制和DC-DC变换器电压控制模型。该动态模型中,所有变换器经平均值模型简化,包含保护与控制功能,并能正确反映机电暂态特性。基于PSCAD/EMTDC,对直流风电机组详细动态模型和简化动态模型的仿真结果进行对比分析,验证了后者建模的准确性和仿真的快速性。在此动态模型的基础上,可构建直流型风电场仿真模型,实现直流型风电场的动态长过程仿真分析。
This paper presents a dynamic model of DC wind turbine with electromechanical transients, including models of aerodynamics, drive train, generator, AC-DC rectifier and DC-DC converter. Control model of blade control, power control and DC-link voltage control are also given. Based on converter average model, dynamic model of DC wind turbine with electromechanical transients is proposed and all control and protection functions can be implemented. Based on comparison and analysis of simulation results of detailed and simplified dynamic model in PSCAD/EMTDC, accuracy and high speed of the proposed model is validated. DC wind farm model is thus built to realize long-term dynamic simulation.
出处
《电网技术》
EI
CSCD
北大核心
2016年第2期465-470,共6页
Power System Technology
基金
国家自然科学基金项目(51261130484)
国家电网公司科技项目(2013-304)~~
关键词
直流风电机组
风电场
平均值模型
机电暂态
动态模型
DC wind turbine
wind farm
average model
electromechanical transients
dynamic model
