A multi-modal deep learning framework for power quality disturbance classification: An integration of 1D time-series signals and 2D scalograms

IF 4.9 3区 计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE
Mirza Ateeq Ahmed Baig , Naeem Iqbal Ratyal , Adil Amin , Umar Jamil , Haris M. Khalid , Muhammad Fahad Zia
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引用次数: 0

Abstract

Power quality (PQ) is crucial for the dependable functioning of electrical systems, requiring stable voltage, frequency, and waveform integrity. However, power quality disturbances (PQDs), resulting from faults, nonlinear loads, and switching events, can degrade system performance, damage equipment, and reduce operational efficiency. Accurate identification and classification of PQDs are therefore critical for effective mitigation. Traditional methods that rely solely on either one-dimensional (1D) time-series signals or two-dimensional (2D) waveform images often fail to capture the full characteristics of disturbances, leading to reduced accuracy. To address this limitation, a multi-modal deep learning framework is proposed that integrates 1D time-series data with corresponding 2D scalogram images. The proposed model employs parallel 1D and 2D convolutional neural networks (CNNs), each enhanced with attention mechanisms to enhance feature extraction by focusing on modality-specific salient information. The proposed model is evaluated on a comprehensive synthetic dataset of sixteen PQD types. Experimental results demonstrate that the proposed approach achieves an average classification accuracy of 99.99%, a sensitivity of 99.98%, and a specificity of 99.99%, outperforming existing methods. These results demonstrate the framework’s robustness and its potential as an effective solution for PQD monitoring and classification in smart grid environments.
电能质量扰动分类的多模态深度学习框架:一维时间序列信号和二维尺度图的集成
电能质量(PQ)对于电力系统的可靠运行至关重要,它要求稳定的电压、频率和波形完整性。然而,由故障、非线性负载和开关事件引起的电能质量扰动(PQDs)会降低系统性能,损坏设备,降低运行效率。因此,准确识别和分类pqd对于有效缓解疾病至关重要。仅依赖一维(1D)时间序列信号或二维(2D)波形图像的传统方法往往无法捕获干扰的全部特征,导致精度降低。为了解决这一限制,提出了一种多模态深度学习框架,将一维时间序列数据与相应的二维尺度图图像集成在一起。该模型采用并行的一维和二维卷积神经网络(cnn),每个卷积神经网络都增强了注意力机制,通过关注特定于模态的显著信息来增强特征提取。在16种PQD类型的综合合成数据集上对该模型进行了评估。实验结果表明,该方法的平均分类准确率为99.99%,灵敏度为99.98%,特异性为99.99%,优于现有方法。这些结果证明了该框架的鲁棒性及其作为智能电网环境中PQD监测和分类的有效解决方案的潜力。
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来源期刊
Computers & Electrical Engineering
Computers & Electrical Engineering 工程技术-工程:电子与电气
CiteScore
9.20
自引率
7.00%
发文量
661
审稿时长
47 days
期刊介绍: The impact of computers has nowhere been more revolutionary than in electrical engineering. The design, analysis, and operation of electrical and electronic systems are now dominated by computers, a transformation that has been motivated by the natural ease of interface between computers and electrical systems, and the promise of spectacular improvements in speed and efficiency. Published since 1973, Computers & Electrical Engineering provides rapid publication of topical research into the integration of computer technology and computational techniques with electrical and electronic systems. The journal publishes papers featuring novel implementations of computers and computational techniques in areas like signal and image processing, high-performance computing, parallel processing, and communications. Special attention will be paid to papers describing innovative architectures, algorithms, and software tools.
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