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Article

Overvoltage Prevention and Curtailment Reduction Using Adaptive Droop-Based Supplementary Control in Smart Inverters

1
Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND 58102, USA
2
Sandia National Laboratory, Albuquerque, NM 87123, USA
3
Department of Computer and Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, FL 33431, USA
4
Pacific Northwest National Laboratory, Richland, WA 99354, USA
5
Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, SD 57007, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Mohsen Soltani
Appl. Sci. 2021, 11(17), 7900; https://doi.org/10.3390/app11177900
Received: 30 June 2021 / Revised: 13 August 2021 / Accepted: 17 August 2021 / Published: 27 August 2021
(This article belongs to the Special Issue Advancements for Large Scale Adoption of Smart-Inverters)
Recent developments in the renewable energy sector have seen an unprecedented growth in residential photovoltaic (PV) installations. However, high PV penetration levels often lead to overvoltage problems in low-voltage (LV) distribution feeders. Smart inverter control such as active power curtailment (APC)-based overvoltage control can be implemented to overcome these challenges. The APC technique utilizes a constant droop-based approach which curtails power rigidly, which can lead to significant energy curtailment in the LV distribution feeders. In this paper, different variations of the APC technique with linear, quadratic, and exponential droops have been analyzed from the point-of-view of energy curtailment for a LV distribution network in North America. Further, a combinatorial approach using various droop-based APC methods in conjunction with adaptive dynamic programming (ADP) as a supplementary control scheme has also been proposed. The proposed approach minimizes energy curtailment in the LV distribution network by adjusting the droop gains. Simulation results depict that ADP in conjunction with exponential droop reduces the energy curtailment to approximately 50% compared to using the standard linear droop. View Full-Text
Keywords: overvoltage; droop-based methods; active power curtailment; adaptive dynamic programming overvoltage; droop-based methods; active power curtailment; adaptive dynamic programming
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MDPI and ACS Style

Maharjan, M.; Tamrakar, U.; Ni, Z.; Bhattarai, B.; Tonkoski, R. Overvoltage Prevention and Curtailment Reduction Using Adaptive Droop-Based Supplementary Control in Smart Inverters. Appl. Sci. 2021, 11, 7900. https://doi.org/10.3390/app11177900

AMA Style

Maharjan M, Tamrakar U, Ni Z, Bhattarai B, Tonkoski R. Overvoltage Prevention and Curtailment Reduction Using Adaptive Droop-Based Supplementary Control in Smart Inverters. Applied Sciences. 2021; 11(17):7900. https://doi.org/10.3390/app11177900

Chicago/Turabian Style

Maharjan, Manisha, Ujjwol Tamrakar, Zhen Ni, Bishnu Bhattarai, and Reinaldo Tonkoski. 2021. "Overvoltage Prevention and Curtailment Reduction Using Adaptive Droop-Based Supplementary Control in Smart Inverters" Applied Sciences 11, no. 17: 7900. https://doi.org/10.3390/app11177900

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