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电网技术  2011 

基于2阶轨迹灵敏度的暂态稳定约束最优潮流计算

, PP. 106-112

Keywords: 最优潮流,暂态稳定,2阶轨迹灵敏度,单机无穷大母线等值,临界功角轨迹

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Abstract:

针对现有基于轨迹灵敏度技术的暂态稳定约束潮流计算中存在的问题,计算出发电机转角对控制变量的2阶轨迹灵敏度,并利用1阶和2阶轨迹灵敏度更精确地描述发电机转角与所有发电机有功和无功出力之间的2阶泰勒展开表达式。此外,根据时域仿真,将多机系统等值为单机无穷大母线系统,并根据等值系统的临界功角轨迹建立严格的暂态稳定判据。据此可建立更为合理的暂态稳定约束最优潮流模型。新英格兰10机39节点和UK20机100节点系统的仿真结果验证了该方法的准确性和有效性。

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