海上直驱风电经柔直并网系统的次/超同步振荡特性分析
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张志强, 李秋彤, 余浩, 陈鸿琳, 孙海顺
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Analysis of Sub/Super-Synchronous Oscillation of Direct-Drive Offshore Wind Power Grid-Connected System via VSC-HVDC
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ZHANG Zhiqiang, LI Qiutong, YU Hao, CHEN Honglin, SUN Haishun
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表2 海上风电经柔直并网系统次/超同步频段特征模态
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Tab.2 SSO modes of offshore wind farm integrated system through VSC-HVDC
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| SSO模态 | 特征值 | | 振荡模式 | | 工况一 | 工况二 | 工况三 | 工况四 | | | λ1,2 | -6.36± | j61.10×2π | 3.65± | j48.39×2π | 23.77± | j38.32×2π | -6.36± | j61.10×2π | 风场-柔直模式 | | λ7,8 | -115.08± | j112.66×2π | -144.46± | j98.76×2π | -174.26± | j86.60×2π | -115.08± | j112.66×2π | | | λ9,10 | -83.10± | j10.54×2π | -77.77± | j12.51×2π | -67.93± | j15.29×2π | -83.10± | j10.54×2π | | | λ3,4 | -66.26± | j70.21×2π | -37.05± | j51.96×2π | 7.24± | j39.77×2π | -66.26± | j70.21×2π | 风场间模式 | | λ11,12 | -198.21± | j124.81×2π | -242.92± | j104.25×2π | -296.25± | j84.21×2π | -198.21± | j124.81×2π | | | λ13,14 | -93.50+
-56.79+ | j0×2π
j0×2π | -99.78± | j4.39×2π | -122.16± | j13.71×2π | -93.50+
-56.79+ | j0×2π
j0×2π | | | λ5,6 | -74.96± | j26.94π | -74.96± | j26.94π | -74.96± | j26.94π | 2.61± | j25.81×2π | 柔直-交流系统模式 | | λ15,16 | -184.74± | j106.82×2π | -184.74± | j106.82×2π | -184.74± | j106.82×2π | -186.02± | j80.56×2π | | | λ17,18 | -366.61± | j31.54×2π | -366.61± | j31.54×2π | -366.61± | j31.54×2π | -540.99± | j1.95×2π | |
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