DOI:https://doi.org/10.1007/s40565-018-0443-z Online coherence identification using dynamic time warping for controlled islanding Page view: 0        Net amount: 128 Author: Hasan Ul BANNA1,2, Zhe YU1, Di SHI1, Zhiwei WANG1, Dawei SU3, Chunlei XU3, Sarika Khushalani SOLANKI2, Jignesh M. SOLANKI2 Author Affiliation: 1. GEIRI North America, San Jose, USA 2. Department of CSEE, West Virginia University, Morgantown, USA 3. Grid Dispatch Center, State Grid Jiangsu Electric Power Company, Nanjing, China Foundation: This work was supported by SGCC Science and Technology Program (No. 5455HJ160007). Abstract: 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 identi- fication 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 IEEE 39-bus system and WECC 179-bus system, through which its advantages are demonstrated. Keywords: Coherence identification, Constrained spectral clustering, Controlled islanding, Dynamic time warping, Phasor measurement unit measurement               Online Time:2019/01/28 View Full Text       Download reader