The noise of transformers has always been a concern in the power industry. It is closely related to the structure, cooling method, load size and insulation medium of transformers. As for traditional oil immersed transformers, their noise mainly comes from the cooling system and transformer body. In this work, we focused on designing and studying the noise reduction characteristics of 10 kV eco-friendly gas insulated transformer and selected two oil-immersed transformers for the comparative research. The test results show that the noise of the 10 kV gas insulated transformer is lower than that of two oil-immersed transformers, which is more suitable for the urban power grid.
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Wu et al. (2024) studied this question.
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