Abstract

With the increase of purchasing power, allowing consumers to pay more attention to food quality, including protein, vitamins, trace elements, rather than just buying the food. Power transformer is one of the key equipment in power system, it undertakes the voltage conversion, power distribution and transmission and provide the service of power, reliable transmission of electrical energy, has the extremely vital significance of flexible distribution and safe use. The safe operation or not, will directly relate to the whole power system could continuously. Therefore, the normal operation of power transformer is the power system safe, reliable, high quality, an important guarantee of economic operation, we must maximize to prevent and reduce the occurrence of accidents of transformer, but because of the long-term operation of transformer, fault and general accident could not be avoided completely.

Keywords:

Electrical features, food refrigerated transport, loss ratio of negative, negative loss, power transformer,

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