Real-time Coherency Identification using a Window-Size-Based Recursive Typicality Data Analysis

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Lugnani, Lucas ; Dotta, Daniel ; Paternina, Mario R. A. ; Chow, Joe ; Nordstrom, L ; Holjevac, N ; Kuzle, I ; Ivankovic, I ; Kezunovic, M ; Paulone, M ; Mohsenian-Rad, H ; Muscas, C ; Basakarad, T

• Document type: Journal article
• Source: 2022 INTERNATIONAL CONFERENCE ON SMART GRID SYNCHRONIZED MEASUREMENTS AND ANALYTICS - SGSMA 2022; v. N/A, p. 6-pg., 2022-01-01.

Abstract

This work presents a data-driven analysis of minimal length necessary for coherency detection considering a recursive form of the typicality-based Data analysis (TDA). It proposes a methodology that encloses the observation of the variance of the typicality (tau) to asses the minimal window length necessary to determine the coherent buses, where the properties of the TDA approach and the groups of buses are iteratively calculated at every new data point sampled. Once the variance of each group reaches a certain value, the minimal window length is determined. Besides, this method preserves the TDA characteristics of using exclusively measurements, not requiring pre-determination of number of groups, group centers or cut-off constants. The method is applied to the well know 2-area Kundur test system, allowing to corroborate its effectiveness and draw conclusions regarding minimal window length dependence on the slowest inter-area mode. (AU)

• FAPESP's process: 16/08645-9 - Interdisciplinary research activities in electric smart grids
• Grantee: João Bosco Ribeiro do Val
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/20104-9 - Wide-area monitoring, dynamic security analysis and control of modern power system networks
• Grantee: Luís Fernando Costa Alberto
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 19/10033-0 - Development of data-driven metodology for improvement of pperation of EPS with high penetration of wind/solar generation
• Grantee: Daniel Dotta
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/07375-3 - Power system operation with high penetration of low inertia generation
• Grantee: Daniel Dotta
• Support Opportunities: Scholarships abroad - Research