Grunnleggende konsepter
Locating and identifying forced oscillation sources in power grids is crucial for grid stability and reliability.
Sammendrag
The content discusses forced oscillations in power grids, their detrimental effects, and the challenges in locating their sources. It introduces a data-driven method for source localization under various scenarios, including realistic conditions with incomplete information. The paper details the algorithm's steps, from learning system parameters to optimizing a log-likelihood function for source identification. Illustrative examples on toy models and the IEEE-57 bus test case demonstrate the method's effectiveness even with challenging scenarios.
- Forced oscillations can lead to grid instability and damage critical components.
- A data-driven approach is proposed for source localization under varying grid conditions.
- Learning system parameters without forcing and optimizing a log-likelihood function aid in identifying sources accurately.
- Examples on toy models and the IEEE-57 bus test case showcase successful source identification.
- Challenges like degeneracy of sources are addressed through the algorithm's optimization process.
- The method proves effective even with limited observations at generator buses, showcasing its potential for real-world applications.
Statistikk
Recently, a data-driven maximum-likelihood-based method was proposed to perform source localization in transmission grids under wide-area response scenarios.
The amplitude of the forcing during an event on January 11, 2019, was γ = 0.3 with noise amplitude σ = 0.2.
Generators have inertia and damping parameters: d1 = 0.5s, d2 = 0.8s, m1 = 2s^2, m2 = 1.5s^2.
Sitater
"Due to the aging of existing grid assets and ongoing energy transition, forced oscillations are expected to become more prevalent."
"Our approach is based on an explicit Kron reduction of the dynamics that can be directly incorporated into the objective function expressing the likelihood of observations at generators."
"The method correctly pinpoints the source or a set of equivalent sources even when observed generator buses are much smaller than total buses in the original grid."