电网主动孤岛化以缓解高影响低频事件
Proactive Islanding of the Power Grid to Mitigate High-Impact Low-Frequency Events
摘要：
本文提出了一种增强电力系统弹性的方法，通过主动分裂成小的自我维持的岛屿在极端事件的准备互联电网。这个想法是调整系统，使级联停电可以限制在受影响的地区，防止干扰传播到系统的其余部分。当可以预先通知威胁，但对其性质不甚了解时，这一缓解战略将证明特别有用。在我们的方法中，岛屿确定使用约束层次谱聚类技术。我们进一步检查的可行性所产生的岛屿使用稳态交流功率流。该方法的性能示出使用详细的PSS/E模型的重网状传输网络PJM互连在美国东部。不同季节的典型算例表明，电力潮流模式的变化会影响孤岛的配置。
英文摘要：
This paper proposes a methodology for enhancing power systems resiliency by proactively splitting an interconnected grid into small self-sustaining islands in preparation for extreme events. The idea is to posture the system so that cascading outages can be bound within affected areas, preventing the propagation of disturbances to the rest of the system. This mitigation strategy will prove especially useful when advance notification of a threat is available but its nature not well understood. In our method, islands are determined using a constrained hierarchical spectral clustering technique. We further check the viability of the resultant islands using steady-state AC power flow. The performance of the approach is illustrated using a detailed PSS/E model of the heavily meshed transmission network operated by PJM Interconnection in the eastern USA. Representative cases from different seasons show that variations in power flow patterns influence island configuration.
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