Power system frequency estimation using a least mean squares differentiator

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Carlos Ramos (Author) FEUP; Adriano Carvalho (Author) FEUP; António Pina Martins (Author) FEUP

Journal

Title: International Journal of Electrical Power and Energy Systems

Vol. 87

Pages: 166-175

ISSN: 0142-0615

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 6 Citations

Other information

Authenticus ID: P-00M-FPJ

DOI: 10.1016/j.ijepes.2016.11.001

Abstract (EN): The estimation of the power system frequency plays an important role in power quality assessment and power flow control. This paper presents a frequency estimator based on a moving average filter and on a least mean squares differentiator applied to the phase-angles of the grid voltages. The phase-angles are obtained using the Clarke transformation. The estimator achieves a high rejection to the grid disturbances such as unbalances and harmonics. A recursive version is proposed allowing an efficient computational implementation. The estimator performance is validated and compared with four other estimators by several simulations.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 10