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arXiv · 1708.06424

Online Coherence Identification Using Dynamic Time Warping for Controlled Islanding

Hasan Ul Banna·Zhe Yu·Di Shi·Zhiwei Wang·Dawei Su·Chunlei Xu·Sarika Solanki·Jignesh Solanki
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Abstract

Controlled islanding is considered to be the last countermeasure to prevent system-wide blackouts in case of cascading failures. It splits the system into self-sustained islands to maintain transient stability at the expense of possible loss of load. Generator coherence identification is critical to controlled islanding scheme as it helps identify the optimal cut-set to maintain system transient stability. This paper presents a novel approach for online generator coherency identification using phasor measurement unit (PMU) data and dynamic time warping (DTW). Results from the coherence identification are used to further cluster non-generator buses using spectral clustering with the objective of minimizing power flow disruption. The proposed approach is validated and compared to existing methods on the IEEE 39-bus system, through which its advantages are demonstrated.

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Hasan Ul Banna, Zhe Yu, Di Shi, Zhiwei Wang, Dawei Su, Chunlei Xu, Sarika Solanki, Jignesh Solanki. 2017-08-21. Online Coherence Identification Using Dynamic Time Warping for Controlled Islanding. https://arxiv.org/abs/1708.06424

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