Abstract

In power system, a large sum of harmonic produced by non-linear load will affect the loss of transformers. In the meanwhile, the traditional methods to measure the loss do not have enough adaptability. By analyzing the principle of one side measurement and two sides measurement methods, and making study on the harmonic copper loss and harmonic iron loss, a progressed distribution transformer loss meter considering the harmonic loss is designed in this paper. The meter with high precision, strong adaptability and operability has a wide application prospect.

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