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A centralized UFLS scheme using decision trees for small isolated power systems

D. López, L. Sigrist

This paper presents a centralized underfrequency load-shedding (UFLS) scheme using a decision tree to decide whether and how much load needs to be shed. UFLS schemes play an important role in protecting the integrity of small isolated power systems. Centralized UFLS schemes continuously measure and process critical system variables and act on the feeder breakers according to the system state. The decision determines the optimal amount of load to be shed by means of dichotomous tests applied to measured input variables related to the pre- and post-contingency state of the system. The applicability of the centralized UFLS scheme is shown for a Spanish small isolated power system.

Keywords: Frequency stability,underfrequency load shedding, clustering, decision trees

IEEE Latin America Transactions. Volume: 15 Issue: 10 Pages: 1888-1893

JCR Impact Factor and Scopus quartile: 0.502 (2017)

DOI reference: DOI icon 10.1109/TLA.2017.8071232    

Published on-line: October 2017.

D. López, L. Sigrist. A centralized UFLS scheme using decision trees for small isolated power systems. IEEE Latin America Transactions. vol. 15, no. 10, pp. 1888-1893, October 2017 [Online]

    Topics research:
  • *Stability: large disturbance stability, tuning of frequency loadshedding schemes, excitation control, small disturbance stability, tuning of power system stabilizers, identification of AVR and governor models

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