Online coherence identification using dynamic time warping for controlled islanding

• 作者: Chunlei XU Dawei SU Di SHI Hasan Ul BANNA Jignesh M.SOLANKI Sarika Khushalani SOLANKI Zhe YU Zhiwei WANG
• 来源期刊: 现代电力系统与清洁能源学报(英文)
• 学科: 工学
• 关键词: COHERENCE IDENTIFICATION Constrained spectral clustering Controlled ISLANDING Dynamic time WARPING PHASOR MEASUREMENT unit MEASUREMENT
• 年，卷（期）: 2019,（1）
• 页码范围: 38-54
• 页数: 17页
• 分类号: TM933.313

摘要

Controlled islanding is considered to be the last countermeasure to prevent a system-wide blackout 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 the transient stability of the post-islanding systems.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 disruptions.The proposed approach is validated and compared to existing methods on the IEEE39-bus system and WECC 179-bus system, through which its advantages are demonstrated.