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

Applied Sciences

Zhen Ni¹  Reinaldo Tonkoski²  Manisha Maharjan³  Bishnu Bhattarai⁴  Ujjwol Tamrakar⁵ 

[1] Department of Computer and Electrical Engineering and Computer Science, Florida Atlantic University, Boca Raton, FL 33431, USA;Department of Electrical Engineering and Computer Science, South Dakota State University, Brookings, SD 57007, USA;Department of Electrical and Computer Engineering, North Dakota State University, Fargo, ND 58102, USA;Pacific Northwest National Laboratory, Richland, WA 99354, USA;Sandia National Laboratory, Albuquerque, NM 87123, USA;

关键词: overvoltage;    droop-based methods;    active power curtailment;    adaptive dynamic programming;   

DOI  :  10.3390/app11177900

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown