LIU Qing, LI Aolong, MA Chuang, et al. A Power Quality Disturbance Identification Method Based on Lissajous Curve and YOLOv8 Network[J]. 2025, 53(11): 109-115.
LIU Qing, LI Aolong, MA Chuang, et al. A Power Quality Disturbance Identification Method Based on Lissajous Curve and YOLOv8 Network[J]. 2025, 53(11): 109-115. DOI: 10.20204/j.sp.2025.11013.
A Power Quality Disturbance Identification Method Based on Lissajous Curve and YOLOv8 Network
To address the issues of complex feature extraction, low recognition accuracy, and high computational load in traditional methods for identifying composite power quality disturbances, this paper proposes a novel identification approach based on Lissajous curve and the YOLOv8 network. The method first converts one-dimensional power quality disturbance data into two-dimensional elliptical trajectory images using Lissajous curve parametric equations, thereby enhancing the distinct representation of composite disturbance features. Subsequently, the YOLOv8 network is employed as the recognition module to perform classification training on the generated Lissajous curve figures, significantly improving the identification capability for composite disturbances. Finally, a comparative analysis of different identification methods is conducted. Experimental results demonstrate that the proposed method can effectively extract power quality disturbance features, achieve high-accuracy identification of 17 types of power quality disturbances under different noise environments, and substantially alleviate the insufficient recognition accuracy of traditional methods in handling composite disturbances.