【摘要】 为研究复杂电网连锁故障的传播机理,同时为预防和减小大停电事故发生,在研究了国内外复杂电力系统连锁故障模型的基础上,提出了一个模拟连锁故障过程的动态模型.根据此模型,分别对具有小世界(small-world)、无标度(scale-free)特性的人工复杂电网模型进行了连锁故障仿真,验证了模型关于连锁故障动态演化过程的合理性.进一步比较表明,电网连锁故障在小世界电力网络中造成的功率损失比无标度电力网络大得多,并且连锁故障传播的速度远比无标度电力网络迅速.更多还原

【Abstract】 For studying the mechanism of failure spread in power grids,and preventing or reducing the blackouts,an extended dynamic cascading failure model was proposed based on the existing cascading failure models of complex power network.Based on this model,two representative complex power grids as small-world network and scale-free network were simulated for line cascading failure.The results proved the rationality of the dynamic evolutive process of cascading failure.Moreover,according to the comparison results of these two power grids,the power lost caused by cascading failure in small-world network is much larger than that in scale-free network,and the spreading speed of cascading failure in small-world network is much faster than that in scale-free network.更多还原