Browsing by Author "Barzegkar-Ntovom, Georgios A."

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    Active and Reactive Power Load Profiling Using Dimensionality Reduction Techniques and Clustering
    (Institute of Electrical and Electronics Engineers Inc., 2019) Yetkin, E. Fatih; Ceylan, Oğuzhan; Ceylan, Oğuzhan; Yetkin, Emrullah Fatih; Papadopoulos, Theofilos A.; Kazaki, Anastasia G.; Barzegkar-Ntovom, Georgios A.; Business Administration; Management Information Systems
    This paper proposes a methodology to characterize active and reactive power load profiles. Specifically, the approach makes use of fast Fourier Transform for conversion into frequency domain, principle component analysis to reduce the dimension and K-means++ to determine the representative load profiles. The data set consists of five-year measurements taken from the Democritus University of Thrace Campus. Test days were also classified as working and non-working. From the results it is observed that the proposed methodology determines representative load profiles effectively both regarding active and reactive power.
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    Citation - WoS: 4
    Citation - Scopus: 5
    Generic Dynamic Load Modelling Using Cluster Analysis
    (IEEE, 2018) Barzegkar-Ntovom, Georgios A.; Ceylan, Oğuzhan; Ceylan, Oğuzhan; Yetkin, Emrullah Fatih; Papadopoulos, Theofilos A.; Yetkin, E. Fatih; Business Administration; Management Information Systems
    In this paper a new generic load modelling procedure is proposed based on the application of cluster analysis on load model parameters identified from measured dynamic responses. The performance of the proposed approach is assessed using measurements obtained from a low-voltage laboratory scale test configuration. In order to develop robust generalized load models applicable to a wide range of operating conditions different load compositions operating conditions and voltage disturbances are considered in the analysis. The findings of this paper verify the validity of the proposed generic modelling procedure and indicate robust results using the proposed methodology.