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根据轨迹计算故障切除时间灵敏度的方法

DOI: 10.13334/j.0258-8013.pcsee.2014.10.013, PP. 1618-1623

Keywords: 数值仿真,轨迹灵敏度,故障切除时间灵敏度,卷积法,轨迹

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Abstract:

提出一种仅由角速度来计算功角对故障切除时间灵敏度(sensitivityofpowerangletofaultclearingtime,SPAFCT)的方法。通过对不同详略程度发电机模型的分析,导出SPAFCT与角速度轨迹之间的关系,由此可实现根据轨迹计算SPAFCT。研究表明,SPAFCT与角速度轨迹之间的关系不随模型详略程度(模型阶数)而改变,说明在由角速度轨迹计算SPAFCT时不会受到系统模型参数误差的影响。单机系统和10机39节点系统的算例表明,所提方法具有较高的计算精度且计算简便。算例还表明SPAFCT中蕴含了丰富的电力系统暂态稳定裕度的信息。

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