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Título del libro: 2019 18th European Control Conference, Ecc 2019
Título del capítulo: Finite-time estimation of time-varying frequency signals in low-inertia power systems

Autores UNAM:
JUAN GUSTAVO RUEDA ESCOBEDO; JAIME ALBERTO MORENO PEREZ;
Autores externos:

Idioma:
Inglés
Año de publicación:
2019
Palabras clave:

Power plants; Conventional power plants; Development results; Finite time estimations; Frequency dynamics; Initial estimation; Super twisting algorithm; Time varying parameter; Time-varying frequency; Frequency estimation


Resumen:

The ongoing and unprecedented transformation of power systems leads to a reduction in the number of conventional power plants, which are the classical actuators of the grid. In addition, this development results in a decreasing system inertia, which is expected to yield faster frequency dynamics. Therefore power-electronics-interfaced units have to take over system control tasks and, in particular, frequency control. For this purpose, accurate and fast estimation algorithms for time-varying frequency signals are needed. Motivated by this fact, we propose a time-varying parameter estimator and a tuning criterion, which for sufficiently small initial estimation errors allows to reconstruct the time-varying frequency signal of a symmetric three-phase waveform in finite time. The proposed estimator is derived by using a time-varying version of the super twisting algorithm and its performance is illustrated via numerical examples. © 2019 EUCA.


Entidades citadas de la UNAM: