| 引用本文: | 李生虎,蒋以天,于新钰,张楠,宋宇.考虑DFIG桨距角参数优化的小干扰稳定约束最优潮流模型[J].电力自动化设备,2019,39(11): |
| LI Shenghu,JIANG Yitian,YU Xinyu,ZHANG Nan,SONG Yu.Small-signal stability constrained optimal power flow model considering optimization of DFIG pitch angle[J].Electric Power Automation Equipment,2019,39(11): |
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| 摘要: |
| 现有小干扰稳定约束最优潮流(SC-OPF)一般选择同步发电机(SG)有功出力作为控制参数，当某些危险特征值受SG出力影响较小时，电网稳定水平改善效果有限。基于双馈感应发电机(DFIG)详细模型，推导风电系统危险特征值对控制参数灵敏度的解析表达，利用特征值灵敏度调节控制参数，从而改进现有SC-OPF算法；同时优化SG有功出力和DFIG桨距角参数，以调整各自主导特征值。仿真结果表明，所提优化模型能够同时改善电网阻尼比和稳定裕度，并且减小经济损失。 |
| 关键词: 小干扰稳定 特征值灵敏度 最优潮流 双馈感应发电机 桨距角控制 参数优化 |
| DOI：10.16081/j.epae.201908015 |
| 分类号:TM761 |
| 基金项目:国家自然科学基金资助项目(51877061) |
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| Small-signal stability constrained optimal power flow model considering optimization of DFIG pitch angle |
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LI Shenghu, JIANG Yitian, YU Xinyu, ZHANG Nan, SONG Yu
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School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
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| Abstract: |
| The existing SC-OPF(Small-signal stability Constrained Optimal Power Flow) generally selects the active output of SG(Synchronous Generator) as the control parameter, and the improvement effect of power system stability level is limited when SG output has little influence on some dangerous eigenvalues. Based on the detailed model of DFIG, the analytical expression of the sensitivity of the dangerous eigenvalues to the control parameters is derived, and the control parameters are adjusted by the eigenvalue sensitivities to improve the existing SC-OPF algorithm. Meanwhile, the active output of SG and pitch angle parameter of DFIG are optimized to adjust the dominant eigenvalues. Simulative results show that the proposed model can improve both the damping ratio and stability margin of power system and reduce the economic loss. |
| Key words: small-signal stability eigenvalue sensitivity optimal power flow doubly-fed induction generator pitch angle control parameter optimization |
