基于附加阻尼控制的PMSG适应柔直送出策略优化  

Strategy Optimization of PMSG Adapting to Flexible DC Transmission Based on Additional Damping Control

作　　者：栗锐遥 王潇 贾辛遥 田颢璟 LI Ruiyao;WANG Xiao;JIA Xinyao;TIAN Haojing(State Grid Beijing Urban District Power Supply Company,Beijing 100032,China;State Grid Jibei Electric Power Co.,Ltd.,Research Institute,Beijing 100045,China;State Grid Digital Technology Holding Co.,Ltd.,Beijing 100073,China;Department of Electrical Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]国网北京城区供电公司,北京市100032 [2]国网冀北电力科学研究院,北京市100045 [3]国网数字科技控股有限公司,北京市100073 [4]华北电力大学电力工程系,河北省保定市071003

出　　处：《电力建设》2023年第10期127-136,共10页Electric Power Construction

基　　金：国家重点研发计划项目(2020YFF0305800,2016YFB0900500)。

摘　　要：国内外多个风电工程在采用柔直进行远距离输送时出现了系统振荡现象,就该现象研究其判稳方法及优化策略。建立了直驱永磁同步风力发电机(permanent magnet synchronous generator,PMSG)和柔直输电系统的数学模型,推导了PMSG经柔直送出系统的Bode稳定判据,分别提取了PMSG及柔直的系统阻抗,并进行振荡评估。提出了提升柔直送出稳定性的PMSG附加阻尼控制器设计方案和参数整定方法。从频域角度分析优化策略的效果,研究结果显示,基于附加阻尼控制的PMSG经柔直送出的振荡抑制策略有效消除了振荡风险。采用频域分析中抑制效果良好的附加阻尼控制参数进行时域仿真,验证了附加阻尼控制对PMSG经柔直送出系统的振荡抑制效果。Various wind power projects at home and abroad have experienced system oscillations when using flexible straight for long-distance transmission,and this paper investigates the methods for determining stability and optimization strategies for this phenomenon.In this paper,the mathematical model of PMSG and flexible DC transmission system was established.The Bode stability criterion of the hybrid system with PMSG and flexible DC transmission system was derived,and the impedance extraction and oscillation assessment were carried out.The design scheme and parameter tuning method of additional damping controller for PMSG,which are suitable for improving the stability of the hybrid system,were proposed.The effect of the optimisation strategy is analysed in the frequency domain and the results show that the oscillation suppression strategy based on additional damping control for the hybrid system with PMSG and flexible DC transmission system effectively eliminates the risk of oscillation.The additional damping control parameters with good suppression effect in the frequency domain analysis are used for time domain simulation to verify the effect of additional damping control on the oscillation suppression of the hybrid system with PMSG and flexible DC transmission system.

关 键 词：PMSG 柔性直流输电 附加阻尼控制 次同步振荡 稳定判据 

分 类 号：TM614[电气工程—电力系统及自动化]