邵冰冰;赵书强;裴继坤;李忍;宋斯珩;

• 1:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

针对直驱风电场经柔性直流输电(voltage source converter based high voltage direct current,VSC-HVDC)并网引发的次同步振荡(subsynchronous oscillation,SSO)问题,建立了并网系统的动态数学模型。利用特征值法分析了系统中存在的振荡模式,通过参与因子分析可知SSO模式是由直驱永磁风力发电系统和VSC-HVDC共同参与的,分析了直驱永磁风力发电系统直流侧电容、VSC-HVDC交流侧相电抗器、VSC-HVDC直流侧电容和电抗、风电场并网阻抗X/R的大小、等值风机台数对SSO阻尼特性和频率特性的影响。同时,建立了聚合等值风电场经VSC-HVDC并网的动态模型,利用特征值法分析了风电场的聚合特性对系统稳定性的影响。此外,将VSC-HVDC的接入分成源-网-控3部分,在3种不同的运行场景下利用特征值法分析得出VSCHVDC的控制特性和交流侧网络特性对系统SSO特性的影响。通过在PSCAD/EMTDC中搭建了直驱风电场经VSCHVDC并网的仿真模型,验证了理论分析的正确性。

关键词(KeyWords)： 直驱风电场;柔性直流输电;次同步振荡;特征值法;聚合特性;源-网-控

Abstract:

Keywords:

基金项目(Foundation): 河北省自然科学基金项目(E2017502075);; 中央高校基本科研业务费专项资金资助(2018QN079)~~

作者(Author): 邵冰冰;赵书强;裴继坤;李忍;宋斯珩;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.2567

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