Journal
IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 36, Issue 4, Pages 3751-3761Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2021.3050849
Keywords
Load modeling; Impedance; Mathematical model; Power systems; Distribution networks; Voltage measurement; Power system stability; load modelling; renewable DG; static load model; conservation voltage reduction
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This research explores the impact of renewable energy integration on CVR capabilities and load model parameters in distribution networks through mathematical analysis and case studies, demonstrating that the integration of renewable energy can enhance the CVR capabilities of distribution networks.
The conservation voltage reduction (CVR) and load modelling have acquired a renewed interest in reassessing the CVR capabilities and load model parameters for renewable-rich distribution networks. The underlying theoretical views behind the changes in load model parameters and subsequent CVR capabilities in the distribution networks caused by the high penetration of renewable generation have yet to be explored. This research has presented a mathematical analysis of equivalent network impedance with integrated distributed generations (DG) and further established a relationship of the equivalent network impedance with the static load model parameters and CVR to accurately assess the impact of DGs on the CVR. Then, this paper has demonstrated various case studies with IEEE 33 bus network to analyze and validate the changes in static load model parameters due to the integration of renewable DGs and batteries into the balanced and unbalanced power systems. The obtained results verify the increased CVR capabilities of a distribution network, caused by the higher active power exponent in the load model parameters, as affected by the integration of renewable DGs.
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