Details

Autor(en) / Beteiligte

• Chatterjee, Kaustav
• Ray Chaudhuri, Nilanjan
• Stefopoulos, George

Titel

Signal Selection for Oscillation Monitoring With Guarantees on Data Recovery Under Corruption

Ist Teil von

• IEEE transactions on power systems, 2020-11, Vol.35 (6), p.4723-4733

Ort / Verlag

New York: IEEE

Erscheinungsjahr

2020

Link zum Volltext

• Volltext

Quelle

IEEE Xplore

Beschreibungen/Notizen

• Insights are developed into grouping PMU signals for guaranteeing data recovery under sparse corruption. Analytical relations are derived to express the denseness of the subspace spanned by a measurement window in terms of the modal observabilities of its constituent signals. It is shown that grouping signals by minimizing variation in phase angles and amplitudes of observabilities for each poorly-damped mode minimizes the numerical-rank of the measurement window, enhances denseness of the subspace, and helps in attaining the sufficiency condition guaranteeing exact recovery using Robust Principal Component Analysis-based signal reconstruction methods. These insights are structured into lemmas and propositions for signal selection and are validated on synthetic data from IEEE test systems, as well as field PMU data from a US utility.