Abstract
Accurate, fast, and interpretable fault identification on electrical transmission lines is essential for maintaining power system stability and reducing outage durations. In this study, we propose a hybrid 1D convolutional neural network–Decision Tree (1D-CNN–DT) for transmission line fault detection and classification, in which the 1D-CNN acts solely as a feature extractor. During this process, the Decision Tree performs the final, interpretable classification. By preserving decision transparency and achieving high diagnostic accuracy, the proposed architecture differs from conventional end-to-end deep learning models. In MATLAB/Simulink, four distinct transmission line scenarios were simulated to evaluate the framework under realistic operating conditions. These scenarios included short lines, long distributed lines, source-end faults, and load-end faults. We developed a large, balanced dataset of three-phase voltage and current measurements per unit, covering standard operation and ten types of faults. According to the proposed model, fault detection accuracies were 99.89%, 99.94%, 99.94%, and 99.97%, and fault classification accuracies were 99.93%, 99.58%, 99.44%, and 99.86% across the four transmission line configurations. In addition to its high accuracy, the hybrid framework demonstrated significantly lower computational complexity and shorter training and inference times than conventional ANN- and LSTM-based approaches, without requiring manual signal transformations. The SHapley Additive Explanations (SHAP) are integrated to enhance trust and practical usability, providing both global and instance-level interpretability that reveals how voltages and currents contribute to individual faults. According to the results, a hybrid architecture that combines deep learning and explainable AI offers reliable, efficient, and transparent real-time transmission line monitoring and protection.
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Data is publicly available at: https://doi.org/10.6084/m9.figshare.30615710.v1
References
Freire, J. C. A., Garcez Castro, A. R., Homci, M. S., Meiguins, B. S. & De Morais, J. M. Transmission line fault classification using hidden Markov models. IEEE Access 7, 113499–113510. https://doi.org/10.1109/ACCESS.2019.2934938 (2019).
Hachem-Vermette, C. & Yadav, S. Impact of power interruption on buildings and neighborhoods and potential technical and design adaptation methods. Sustainability 15(21), 15299–15299. https://doi.org/10.3390/SU152115299 (2023).
Chen, K., Hu, J., Zhang, Y., Yu, Z. & He, J. Fault location in power distribution systems via deep graph convolutional networks. IEEE J. Sel. Areas Commun. 38(1), 119–131. https://doi.org/10.1109/JSAC.2019.2951964 (2020).
Saber, A., Emam, A. & Elghazaly, H. A backup protection technique for three-terminal multisection compound transmission lines. IEEE Trans. Smart Grid 9(6), 5653–5663. https://doi.org/10.1109/TSG.2017.2693322 (2018).
Hafez, W. A., El Sattar, M. A., Alaboudy, A. H. K., Elbaset, A. A Power quality issues of grid connected wind energy system focus on DFIG and various control techniques of active harmonic filter: A review, In: 2019 21st International Middle East Power Systems Conference, MEPCON 2019 - Proceedings, pp. 1006–1014, Dec. 2019, https://doi.org/10.1109/MEPCON47431.2019.9008171.
Aziz, A. G. M. A., Diab, A. A. Z., El Sattar, M. A. Speed sensorless vector controlled induction motor drive based stator and rotor resistances estimation taking core losses into account, In: 2017 19th International Middle-East Power Systems Conference, MEPCON 2017 - Proceedings, vol. 2018-February, pp. 1059–1068, Jul. 2017, https://doi.org/10.1109/MEPCON.2017.8301313.
Diab, A. A. Z., El-Sattar, M. A. Adaptive model predictive based load frequency control in an interconnected power system, In: Proceedings of the 2018 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering, ElConRus 2018, vol. 2018-January, pp. 604–610, Mar. 2018, https://doi.org/10.1109/EIConRus.2018.8317170.
Xin, G., Wang, P., Wei, X., Xie, H., Zhang, S., Cao, T Short-circuit fault characteristics analysis for the overhead line in MMC-HVDC power grid, In: 2018 International Conference on Power System Technology, POWERCON 2018 - Proceedings, pp. 2941–2947, Jul. 2018, https://doi.org/10.1109/POWERCON.2018.8602308.
Abdelsattar, M., AbdelMoety, A. & Emad-Eldeen, A. Advanced machine learning techniques for predicting power generation and fault detection in solar photovoltaic systems. Neural Comput. Appl. 37(15), 8825–8844. https://doi.org/10.1007/s00521-025-11035-6 (2025).
Janarthanam, K., Kamalesh, P., Basil, T. V., Kovilpillai J. A. J. Electrical Faults-detection and classification using machine learning, In: Proceedings of the International Conference on Electronics and Renewable Systems, ICEARS 2022, pp. 1289–1295, 2022, https://doi.org/10.1109/ICEARS53579.2022.9751897.
EL Sayed, N. G. et al. Artificial intelligent fuzzy control and LAPO algorithm for enhancement LVRT and power quality of grid connected PV/wind hybrid systems. Sci. Rep. 14(1), 30475. https://doi.org/10.1038/s41598-024-78384-5 (2024).
Kenny, E. M., Ford, C., Quinn, M. & Keane, M. T. Explaining black-box classifiers using post-hoc explanations-by-example: The effect of explanations and error-rates in XAI user studies. Artif. Intell. 294, 103459. https://doi.org/10.1016/J.ARTINT.2021.103459 (2021).
Hajji, M. et al. Multivariate feature extraction based supervised machine learning for fault detection and diagnosis in photovoltaic systems. Eur. J. Control 59, 313–321. https://doi.org/10.1016/J.EJCON.2020.03.004 (2021).
Kaplan, H., Tehrani, K. & Jamshidi, M. A fault diagnosis design based on deep learning approach for electric vehicle applications. Energies 14(20), 6599–6599. https://doi.org/10.3390/EN14206599 (2021).
Wang, M. et al. Research on fault diagnosis system for belt conveyor based on internet of things and the LightGBM model. PLoS ONE 18(3), e0277352. https://doi.org/10.1371/JOURNAL.PONE.0277352 (2023).
Shim, S. et al. Fast and accurate interpretation of workload classification model. PLoS ONE 18(3), e0282595. https://doi.org/10.1371/JOURNAL.PONE.0282595 (2023).
Tong, H. et al. Detection and classification of transmission line transient faults based on graph convolutional neural network. CSEE J. Power Energy Syst. 7(3), 456–471. https://doi.org/10.17775/CSEEJPES.2020.04970 (2021).
Lee, H. J. et al. Convolutional neural network-based false battery data detection and classification for battery energy storage systems. IEEE Trans. Energy Convers. 36(4), 3108–3117. https://doi.org/10.1109/TEC.2021.3061493 (2021).
Abdullah, A. Ultrafast transmission line fault detection using a DWT-based ANN. IEEE Trans. Ind. Appl. 54(2), 1182–1193. https://doi.org/10.1109/TIA.2017.2774202 (2018).
Fahim, S. R., Sarker, S. K., Muyeen, S. M., Das, S. K. & Kamwa, I. A deep learning based intelligent approach in detection and classification of transmission line faults. Int. J. Electr. Power Energy Syst. 133, 107102. https://doi.org/10.1016/J.IJEPES.2021.107102 (2021).
Vyas, B., Das, B. & Maheshwari, R. P. An improved scheme for identifying fault zone in a series compensated transmission line using undecimated wavelet transform and Chebyshev neural network. Int. J. Electr. Power Energy Syst. 63, 760–768. https://doi.org/10.1016/J.IJEPES.2014.06.030 (2014).
Chen, Y. Q., Fink, O. & Sansavini, G. Combined fault location and classification for power transmission lines fault diagnosis with integrated feature extraction. IEEE Trans. Ind. Electron. 65(1), 561–569. https://doi.org/10.1109/TIE.2017.2721922 (2018).
Zhang, S., Wang, Y., Liu, M. & Bao, Z. Data-based line trip fault prediction in power systems using LSTM networks and SVM. IEEE Access 6, 7675–7686. https://doi.org/10.1109/ACCESS.2017.2785763 (2017).
Ray, P. & Mishra, D. P. Support vector machine based fault classification and location of a long transmission line. Eng. Sci. Technol. Int. J. 19(3), 1368–1380. https://doi.org/10.1016/J.JESTCH.2016.04.001 (2016).
Asadi Majd, A., Samet, H. & Ghanbari, T. k-NN based fault detection and classification methods for power transmission systems. Protect Control Mod Power Syst https://doi.org/10.1186/S41601-017-0063-Z (2017).
Taha, I. B. M. & Mansour, D. E. A. Novel power transformer fault diagnosis using optimized machine learning methods. Intell. Autom. Soft Comput. 28(3), 739–752. https://doi.org/10.32604/IASC.2021.017703 (2021).
Yousaf, M. Z. et al. Bayesian-optimized LSTM-DWT approach for reliable fault detection in MMC-based HVDC systems. Sci. Rep. 14(1), 1–24. https://doi.org/10.1038/S41598-024-68985-5 (2024).
Khan, W. et al. Rotor angle stability of a microgrid generator through polynomial approximation based on RFID data collection and deep learning. Sci. Rep. 14(1), 1–21. https://doi.org/10.1038/S41598-024-80033-W (2024).
Bin Akter, S., Pias, T. S., Deeba, S. R., Hossain, J. & Rahman, H. A. Ensemble learning based transmission line fault classification using phasor measurement unit (PMU) data with explainable AI (XAI). PLoS ONE 19(2), e0295144. https://doi.org/10.1371/journal.pone.0295144 (2024).
Sinha, A. & Das, D. XAI-LCS: Explainable AI-based fault diagnosis of low-cost sensors. IEEE Sens. Lett. 7(12), 1–4. https://doi.org/10.1109/LSENS.2023.3330046 (2023).
Indrayani, N., Roshinta, T. A., Purnomo, H., Wijanarko, M. K., David Perkasa, M., Afif, Y. Fault prediction in power distribution networks through XAI: a study of LIME and SHAP applied to random forest models, In: ICT-PEP 2025 - International Conference on Technology and Policy in Energy and Electric Power, Proceedings, pp. 149–153, 2025, https://doi.org/10.1109/ICT-PEP67281.2025.11231882.
Jang, K., Pilario, K. E. S., Lee, N., Moon, I. & Na, J. Explainable artificial intelligence for fault diagnosis of industrial processes. IEEE Trans. Ind. Inform. 21(1), 4–11. https://doi.org/10.1109/TII.2023.3240601 (2025).
Sairam, S. et al. Edge-based explainable fault detection systems for photovoltaic panels on edge nodes. Renew. Energy 185, 1425–1440. https://doi.org/10.1016/j.renene.2021.10.063 (2022).
Bhakte, A., Pakkiriswamy, V. & Srinivasan, R. An explainable artificial intelligence based approach for interpretation of fault classification results from deep neural networks. Chem. Eng. Sci. 250, 117373. https://doi.org/10.1016/j.ces.2021.117373 (2022).
Thomas, J. B., Chaudhari, S. G., Shihabudheen, K. V. & Verma, N. K. CNN-based transformer model for fault detection in power system networks. IEEE Trans. Instrum. Meas. https://doi.org/10.1109/TIM.2023.3238059 (2023).
Rizeakos, V., Bachoumis, A., Andriopoulos, N., Birbas, M. & Birbas, A. Deep learning-based application for fault location identification and type classification in active distribution grids. Appl. Energy 338, 120932. https://doi.org/10.1016/J.APENERGY.2023.120932 (2023).
Goni, M. O. F. et al. Fast and accurate fault detection and classification in transmission lines using extreme learning machine. e-Prime - Adv. Electr. Eng. Electron. Energy 3, 100107. https://doi.org/10.1016/J.PRIME.2023.100107 (2023).
Mustafa, Z., Awad, A. S. A., Azzouz, M. & Azab, A. Fault identification for photovoltaic systems using a multi-output deep learning approach. Expert Syst. Appl. 211, 118551. https://doi.org/10.1016/J.ESWA.2022.118551 (2023).
Li, Z., Liu, H., Zhao, J., Bi, T. & Yang, Q. A power system disturbance classification method robust to PMU data quality issues. IEEE Trans. Industr. Inf. https://doi.org/10.1109/TII.2021.3072397 (2022).
Rai, P., Londhe, N. D. & Raj, R. Fault classification in power system distribution network integrated with distributed generators using CNN. Electr. Power Syst. Res. 192, 106914. https://doi.org/10.1016/J.EPSR.2020.106914 (2021).
Tikariha, A., Bag, B. N., Londhe, N. D., Raj, R. Fault classification in an IEEE 30 bus system using convolutional neural network, In: 2021 4th International Conference on Recent Developments in Control, Automation and Power Engineering, RDCAPE 2021, pp. 57–61, 2021, https://doi.org/10.1109/RDCAPE52977.2021.9633569.
Jamil, M., Sharma, S. K. & Singh, R. Fault detection and classification in electrical power transmission system using artificial neural network. Springerplus 4(1), 1–13. https://doi.org/10.1186/S40064-015-1080-X/FIGURES/11 (2015).
Mohd Amiruddin, A. A. A., Zabiri, H., Taqvi, S. A. A. & Tufa, L. D. Neural network applications in fault diagnosis and detection: An overview of implementations in engineering-related systems. Neural Comput. Appl. 32(2), 447–472. https://doi.org/10.1007/S00521-018-3911-5/METRICS (2020).
Di Franco, G. & Santurro, M. Machine learning, artificial neural networks and social research. Qual. Quant. 55(3), 1007–1025. https://doi.org/10.1007/S11135-020-01037-Y/TABLES/17 (2021).
Fahim, S. R., Sarker, Y., Islam, O. K., Sarker, S. K., Ishraque, M. F., Das, S. K. An intelligent approach of fault classification and localization of a power transmission line, In: 2019 IEEE International Conference on Power, Electrical, and Electronics and Industrial Applications, PEEIACON 2019, pp. 53–56, Nov. 2019, https://doi.org/10.1109/PEEIACON48840.2019.9071925.
Padhy, S. K., Panigrahi, B. K., Ray, P. K., Satpathy, A. K., Nanda, R. P., Nayak A. Classification of faults in a transmission line using artificial neural network, In: Proceedings - 2018 International Conference on Information Technology, ICIT 2018, pp. 239–243, Dec. 2018, https://doi.org/10.1109/ICIT.2018.00056.
Leh, N. A. M., Zain, F. M., Muhammad, Z., Hamid, S. A., Rosli, A. D. Fault Detection method using ANN for power transmission line, In: Proceedings - 10th IEEE International Conference on Control System, Computing and Engineering, ICCSCE 2020, pp. 79–84, Aug. 2020, https://doi.org/10.1109/ICCSCE50387.2020.9204921.
Guo, M. F., Yang, N. C. & Chen, W. F. Deep-learning-based fault classification using Hilbert-Huang transform and convolutional neural network in power distribution systems. IEEE Sens. J. 19(16), 6905–6913. https://doi.org/10.1109/JSEN.2019.2913006 (2019).
Dasgupta, A., Debnath, S. & Das, A. Transmission line fault detection and classification using cross-correlation and k-nearest neighbor. Int. J. Knowl. Based Intell. Eng. Syst. 19(3), 183–189. https://doi.org/10.3233/KES-150320 (2015).
Mukherjee, A., Chatterjee, K., Kundu, P. K. & Das, A. Probabilistic neural network-aided fast classification of transmission line faults using differencing of current signal. J Inst Eng (India): Seres B 102(5), 1019–1032. https://doi.org/10.1007/S40031-021-00574-W/METRICS (2021).
Saini, M., bin M. Zin, A. A., Bin Mustafa, M. W., Sultan, A. R. & Rahimuddin, R. Transmission line using discrete wavelet transform and back-propagation neural network based on Clarke’s transformation. Appl. Mech. Mater. 818, 156–165. https://doi.org/10.4028/WWW.SCIENTIFIC.NET/AMM.818.156 (2016).
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The manuscript was refined with the support of AI-based tools, including ChatGPT, Gemini, and Claude. The authors reviewedand edited the content as needed and take full responsibility for the content of the publication.
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Anish Kumar Biswas: Conceptualization, Methodology, Investigation, Software, Writing—Original manuscript Md. Faysal Ahamed: Methodology, Formal analysis, Write- Original manuscript Fariya Binte Shafi: Software, Data curation, Methodology M Murugappan: Conceptualization, Methodology, Investigation, Formal analysis, Validation, Review & Write—Manuscript Muhammad E. H. Chowdhury: Methodology, Supervision, Resources, Writing—Original manuscript Rajeswaran Nagalingam: Visualization and Validation T.Samraj Lawrence: Validation, Visualization, Investigation, Review & Write—Manuscript.
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Biswas, A.K., Ahamed, M.F., Shafi, F.B. et al. Hybrid CNN-decision tree framework for efficient transmission line fault detection and classification: an XAI-based approach. Sci Rep (2026). https://doi.org/10.1038/s41598-026-45514-0
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DOI: https://doi.org/10.1038/s41598-026-45514-0


