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首页> 外文期刊>Generation, Transmission & Distribution, IET >Trajectory sensitivity analysis on the equivalent one-machine-infinite-bus of multi-machine systems for preventive transient stability control
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Trajectory sensitivity analysis on the equivalent one-machine-infinite-bus of multi-machine systems for preventive transient stability control

机译：预防性暂态稳定控制的多机等效单机无限母线的轨迹灵敏度分析

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摘要

A new approach for power system transient stability preventive control is proposed by performing trajectory sensitivity analysis on the one-machine-infinite-bus (OMIB) equivalence of multi-machine systems. Exact instability time/angle are determined from the equivalent OMIB power-angle curve; the trajectory sensitivity is calculated at the instability time and the transient stability of the multi-machine system is controlled by constraining the OMIB's angle excursion at the instability time to that of the critical OMIB which corresponds to the marginally stable condition of the system. The required preventive control action (generation rescheduling) can be efficiently solved via a linear programming model with the OMIB trajectory sensitivities-based constraints. Simulation results on the New England 10-machine 39-bus system and a 285-machine and 1648-bus system validate its effectiveness and superiority over previous trajectory sensitivity applications to this problem.
机译：通过对多机系统的单机无限母线（OMIB）当量进行轨迹灵敏度分析，提出了一种电力系统暂态稳定预防控制的新方法。确切的不稳定性时间/角度是根据等效的OMIB功率角曲线确定的；在不稳定时刻计算轨迹灵敏度，并通过将不稳定时刻的OMIB角偏移限制为临界OMIB的角偏移来控制多机系统的瞬态稳定性，该偏移对应于系统的边际稳定状态。可以通过具有基于OMIB轨迹灵敏度的约束的线性编程模型来有效地解决所需的预防性控制措施（发电调度）。在新英格兰10机39客车系统和285机1648客车系统上的仿真结果证实了其有效性和优越性，优于此前针对该问题的轨迹敏感性应用。

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