EhdNet: Efficient Harmonic Detection Network for All-Phase Processing with Channel Attention Mechanism

Yi Deng (), Lei Wang, Yitong Li, Hai Liu and Yifei Wang ()
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Yi Deng: School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430200, China
Lei Wang: School of Electronic and Electrical Engineering, Wuhan Textile University, Wuhan 430200, China
Yitong Li: School of Electronic and Information Engineering, Hankou University, Wuhan 430212, China
Hai Liu: Faculty of Artificial Intelligence in Education, Central China Normal University, 152 Luoyu Road, Wuhan 430079, China
Yifei Wang: School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan 430081, China

Energies, 2024, vol. 17, issue 2, 1-20

Abstract: The core of harmonic detection is the recognition and extraction of each order harmonic in the signal. The current detection methods are seriously affected by the fence effect and spectrum aliasing, which brings great challenges to the detection of each order harmonic in the signal. This paper proposes an efficient harmonic detection neural network based on all-phase processing. It is based on three crucial designs. First, a harmonic signal-processing module is developed to ensure phase invariance and establish the foundation for subsequent modules. Then, we constructed the backbone network and utilized the feature-extraction module to extract deep abstract harmonic features of the target. Furthermore, a channel attention mechanism is also introduced in the weight-selection module to enhance the energy of the residual convolution stable spectrum feature, which facilitates the accurate and subtle expression of intrinsic characteristics of the target. We evaluate our method based on frequency, phase, and amplitude in two environments with and without noise. Experimental results demonstrate that the proposed EhdNet method can achieve 94% accuracy, which is higher than the compared methods. In comparison experiments with actual data, the RMSE of EhdNet is also lower than that of other recent methods. Moreover, the proposed method outperforms ResNet, BP, and other neural network approaches in data processing across diverse working conditions due to its incorporation of a channel attention mechanism.

Keywords: channel attention mechanism; all phase; harmonic detection; electric energy measurement (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: 2024
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