Abstract:As a transformer main protection, gas protection is an important and traditional non-electricity protection. For internal faults of transformer, gas protection can directly response to non-electricity characteristic such as oil flow velocity, and then has higher sensitivity and reliability compared with electric protection in principle. However, for external faults, great electromagnetic force and losses of windings, which caused by the heavy through currents, may result in maloperation of gas relay. Thus the … Show more
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