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电网技术  2009 

改进的Manchester连锁故障模型及其应用

, PP. 18-22

Keywords: 连锁故障,Manchester模型,最优潮流,电量不足期望值(EENS),停电风险

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Abstract:

本文根据Manchester模型和最优潮流理论,提出了一种改进的连锁故障模型。该模型通过快动态和慢动态两个时间尺度对系统连锁故障过程进行描述,并通过电量不足期望值对系统的停电风险进行评估。算例依据我国一区域电网,研究了系统负载率和关键线路的故障率对电网停电风险的影响以及临界负荷情况下电网的幂律特性。本研究对系统规划和运行人员分析连锁故障过程和采取有效措施降低系统停电风险提供了一定的决策参考。

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