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Case studies of transformers investigations with DGA and winding resistances

机译：用DGA和绕组电阻研究变压器的案例研究

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摘要

Power transformers, designed to transmit electrical power, are key components for the electrical grid and industrial processes. The transformers breakdowns generally lead to important availability losses principally due to difficulty to repair or exchange. Unavailability has a high cost in term of productivity and service quality. Unfortunately, due to their technical specificities and their high costs, the trend is to keep them in service as long as possible with lowest maintenance cost possible. To achieve such objectives, transformer health management techniques become more and more important. The transformer diagnosis tools are traditionally based on measurement analysis and expert knowledge.
机译：设计用于传输电能的电力变压器是电网和工业过程的关键组件。变压器故障通常主要由于维修或更换困难而导致重要的可用性损失。就生产率和服务质量而言，不可用性具有很高的成本。不幸的是，由于它们的技术特点和高昂的成本，趋势是使它们尽可能长时间地保持服务状态，并尽可能降低维护成本。为了实现这些目标，变压器健康管理技术变得越来越重要。传统上，变压器诊断工具基于测量分析和专家知识。

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