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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ARMAX-based method for inertial constant estimation of generation units using synchrophasors

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Lugnani, Lucas [1] ; Dotta, Daniel [1] ; Lackner, Christoph [2] ; Chow, Joe [2]
Total Authors: 4
[1] Univ Campinas UNICAMP, BR-13083852 Campinas, SP - Brazil
[2] Rensselaer Polytech Inst, Troy, NY 12180 - USA
Total Affiliations: 2
Document type: Journal article
Source: Electric Power Systems Research; v. 180, MAR 2020.
Web of Science Citations: 0

With the increase of wind and solar power plants connected to the grid, frequency stability has become a concern for transmission system operators. The large penetration of these sources reduces the inertia of the system, which naturally reacts to active power perturbations. In this scenario, a method capable of estimating the inertia constant, as perceived by a particular bus, is of practical importance. This paper presents a novel methodology to automatically assess the power system inertial constant using an autoregressive moving average exogenous input (ARMAX) model and demonstrate it using power system disturbance responses measured by a Wide-Area Measurement System (WAMS). The proposed approach can be divided into three parts: (i) Time window selection, which includes the identification of the start of the disturbance as well as the inertial response; (ii) A low-order ARMAX model method to estimate the constant of inertia as perceived by a particular bus; (iii) Accuracy evaluation. The proposed method is evaluated considering simulated signals corrupted with noise and outliers as well as real measurements from the New York transmission system. (AU)

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 type: Regular Research Grants
FAPESP's process: 16/08645-9 - Interdisciplinary research activities in electric smart grids
Grantee:Jose Antenor Pomilio
Support type: Research Projects - Thematic Grants
FAPESP's process: 18/07375-3 - Power system operation with high penetration of low inertia generation
Grantee:Daniel Dotta
Support type: Scholarships abroad - Research