Improved distribution transformer energy efficiency measuring detection method

Abstract

The invention provides an improved distribution transformer energy efficiency measuring detection method. The method comprises the steps that 1 an equivalent two-port network model of a distribution transformer is built; 2 according to the equivalent two-port network model, an energy efficiency calculation model of the distribution transformer is determined; and 3 according to the energy efficiency calculation model, an energy efficiency detection device of the distribution transformer in actual conditions is built, so as to measure the energy efficiency value of the distribution transformer in actual conditions. Compared with the prior art, the improved distribution transformer energy efficiency measuring detection method provided by the invention has the advantages that the energy efficiency value of the distribution transformer in actual conditions can be accurately measured, and can be used as an important reference basis of energy saving data; and the method can be applied to the distribution transformer to precisely analyze and calculate energy efficiency measuring and judge energy efficiency level.

Description

technical field [0001] The invention relates to the field of transformer detection, in particular to an improved distribution transformer energy efficiency measurement and detection method. Background technique [0002] The loss of distribution transformers in the power grid accounts for a large part of the losses in the entire power grid, and during the long-term operation of distribution transformers, there are many factors that affect their efficiency, such as load size, harmonic content, and so on. However, for the transformers that pass the test, the efficiency is not measured during their operation, and the long-term operation of the transformers is affected by various factors, which leads to a decrease in their load capacity, which increases the loss, which causes the loss of electric energy. Huge waste. [0003] Because the loss of distribution transformer is affected by the size and type of load, it is not a fixed value. For a long time, the method of judging wheth...

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Problems solved by technology

However, for the transformers that pass the test, the efficiency is not measured during their operation, and the transformers that have been in operation for a long time are affected by various factors, resulting in a decrease in their load capacity, resulting in increased losses, which will cause power loss. huge waste

[0003] Because the loss of distribution transformer is affected by the size and type of load, it is not a fixed value. For a long time, the method of judging whether it is a high-loss distribution transformer at home and abroad generally measures its copper loss and iron loss through no-load test and short-circuit test. , and compared with the distribution transformer standard, this method of evaluating the static energy efficiency of the transformer is only tested when the transformer leaves the factory, and there is no energy efficiency test in the process of operation

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