On-line fault diagnosis model of distribution transformer based on parallel big data stream and transfer learning

Aiming at the problem of calculation speed for distribution transformer on-line fault diagnosis, and the shortage of on-line monitoring type and routine test data, an on-line fault diagnosis model of distribution transformer based on parallel big data stream and transfer learning is established. First, the fault identification feasibility based on the present on-line monitoring data of distribution transformer is analyzed, and the main indicators of on-line fault identification are proposed. Second, the on-line fault identification method based on ARIMA is proposed, on this basis, the on-line fault identification model of distribution transformer based on big data stream is established, and the distribution transformers that possess hidden fault are selected, which would be diagnosed further. In order to improve the efficiency, the model is completed on Storm platform in parallel form. Then, the distribution transformer fault diagnosis indicator system is construct. In order to achieve fault diagnosis of the above selected distribution transformers, the effective fault information from other distribution transformers is extracted using the transfer learning algorithm TrAdaBoost, which is used as auxiliary data for the fault diagnosis tool training of the distribution transformer to be diagnosed. At the same time, the model is completed on Storm platform to improve the efficiency. Finally, based on the distribution transformer fault data, the distribution transformer fault diagnosis is simulated, and results show that the fault diagnosis is accurate and efficient. (c) 2021 Institute of Electrical Engineers of Japan. Published by Wiley Periodicals LLC.