TY - GEN
T1 - Field Study of Voltage Harmonics in Utility-Scale PV Plants Using Point-on-Wave Data
AU - Yang, Yayu
AU - Wu, Yuru
AU - Zhang, Jian
AU - Thotakura, Naga Lakshmi
AU - Zhang, Zhengfa
AU - Afzaal, Muhammad Umar
AU - Dong, Yuqing
AU - Wen, Yan
AU - Shen, Chong
AU - Liu, Yilu
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - Most studies on photovoltaic (PV) harmonics focus on simulation-based analyses or small-scale rooftop PV systems in controlled environments. Research using real-world data from large-scale PV power plants is limited, with most studies emphasizing transient current analysis and neglecting voltage behavior. To address this gap, this paper analyzes Point-on-Wave voltage (POWV) data from utility-scale PV plants. The high-speed Universal Grid Analyzer (UGA) devices is used to capture real-world data, and a 24-hour analysis of voltage total harmonic distortion (THD) and characteristic harmonics is performed during summer operation. This work highlights significant fluctuations in the 5th harmonic, especially at night, a phenomenon not widely documented in prior research.
AB - Most studies on photovoltaic (PV) harmonics focus on simulation-based analyses or small-scale rooftop PV systems in controlled environments. Research using real-world data from large-scale PV power plants is limited, with most studies emphasizing transient current analysis and neglecting voltage behavior. To address this gap, this paper analyzes Point-on-Wave voltage (POWV) data from utility-scale PV plants. The high-speed Universal Grid Analyzer (UGA) devices is used to capture real-world data, and a 24-hour analysis of voltage total harmonic distortion (THD) and characteristic harmonics is performed during summer operation. This work highlights significant fluctuations in the 5th harmonic, especially at night, a phenomenon not widely documented in prior research.
KW - Harmonics
KW - Point-on-Wave voltage
KW - solar photovoltaic
KW - Total harmonic distortion
KW - Universal Grid Analyzer
UR - https://www.scopus.com/pages/publications/105030440956
U2 - 10.1109/NAPS66256.2025.11272202
DO - 10.1109/NAPS66256.2025.11272202
M3 - Conference contribution
AN - SCOPUS:105030440956
T3 - 2025 57th North American Power Symposium, NAPS 2025
BT - 2025 57th North American Power Symposium, NAPS 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 57th North American Power Symposium, NAPS 2025
Y2 - 26 October 2025 through 28 October 2025
ER -