A Zonal Approach for Wide-Area Temporary Voltage Quality Assessment in a Smart Grid

Miodrag Forcan (), Aleksandar Simović, Srđan Jokić and Jovana Forcan
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Miodrag Forcan: Department of Electroenergetics, Faculty of Electrical Engineering, University of East Sarajevo, 30 Vuk Karadžić Street, 71123 East Sarajevo, Bosnia and Herzegovina
Aleksandar Simović: Department of Electroenergetics, Faculty of Electrical Engineering, University of East Sarajevo, 30 Vuk Karadžić Street, 71123 East Sarajevo, Bosnia and Herzegovina
Srđan Jokić: Department of Electroenergetics, Faculty of Electrical Engineering, University of East Sarajevo, 30 Vuk Karadžić Street, 71123 East Sarajevo, Bosnia and Herzegovina
Jovana Forcan: Department of Computer Science, Faculty of Philosophy, University of East Sarajevo, 1 Aleksa Šantić Street, 71420 East Sarajevo, Bosnia and Herzegovina

Energies, 2024, vol. 17, issue 11, 1-30

Abstract: Wide-area voltage quality assessment represents one of the mandatory objectives for distribution system operators in the development of advanced distribution management systems supporting smart grid requirements. This paper introduces a zonal approach for wide-area temporary voltage quality evaluation in a distribution network. The concept of temporary voltage quality evaluation and assessment is recommended to incentivize active/online management of voltage quality issues. A decision support system based on simple deterministic rules is proposed for rating the voltage quality zones in a distribution network and making recommendations to the distribution system operator. Voltage RMS level, unbalance, and total harmonic distortion are considered voltage quality indices representing the inputs in the decision support system. Residential, commercial, and industrial load types are considered when setting the thresholds for voltage quality indices. The proposed zonal approach for the division of distribution networks in voltage quality zones is applied to the example of a typical European-type distribution network. The operation of a decision support system is tested using the developed distribution smart grid model. The following simulation case studies are conducted: loads with low power factors, manual voltage regulation at MV/LV transformers, unbalanced loads, integration of solar power plant, and nonlinear loads. The obtained simulation results reveal the benefits of the proposed voltage quality assessment approach. Cybersecurity challenges that may impact the proposed approach are addressed, including security vulnerabilities, data privacy, and resilience to cyber threats.

Keywords: power quality; smart grid; distribution system operator; wide-area monitoring; decision support system (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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