Collaborative Control Strategy of Power Quality Based on Residual Capacity of Photovoltaic Inverter

Zekun Sun, Hao Liu, Yueming Ding, Haopeng Luo, Ting Liu and Qinyue Tan ()
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Zekun Sun: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
Hao Liu: Rizhao Power Supply Company, State Grid Shandong Electric Power Company, Rizhao 276800, China
Yueming Ding: Rizhao Power Supply Company, State Grid Shandong Electric Power Company, Rizhao 276800, China
Haopeng Luo: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
Ting Liu: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China
Qinyue Tan: College of Water Resources and Architectural Engineering, Northwest A&F University, Xianyang 712100, China

Energies, 2022, vol. 15, issue 21, 1-16

Abstract: With the large-scale distributed PV connected to the grid, the random and intermittent nature of PV output, the non-linearity of the inverter, as well as the low daytime base-load and large-scale back feeding cause outstanding power quality problems such as overvoltage, three-phase unbalance, and high harmonic content at the end of the power supply system, which seriously affects the safe and stable operation of the grid and power efficiency. Based on the residual capacity of the inverter, this paper investigates a cooperative power quality control strategy that integrates active power filter, reactive power compensation, and inverter functions to achieve comprehensive power quality control and management without adding additional hardware equipment. The validation results show that the control strategy strongly improves the power quality, grid security, stability, and efficiency. This strategy indicates significant economic benefits.

Keywords: power quality; PV inverters; residual capacity; instantaneous power theory; cooperative control (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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