A Zonal Approach for Wide-Area Temporary Voltage Quality Assessment in a Smart Grid
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Датум
2024
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Апстракт
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.
Опис
Кључне речи
power quality; smart grid; distribution system operator; wide-area monitoring; decision support system