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首页> 外文期刊>Power Engineering Review, IEEE >Distribution Transformer Winding Losses Due to Nonsinusoidal Currents
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Distribution Transformer Winding Losses Due to Nonsinusoidal Currents

机译：非正弦电流引起的配电变压器绕组损耗

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摘要

Increased transformer winding losses are an important consideration in determining the overall impact of harmonic currents in a power system. Frequently, losses due to harmonic currents are assumed to vary with the square of frequency. The purpose of this paper is to compare winding loss calculations from a finite element method with measured losses in single-phase distribution transformers and to test the principle of superposition of harmonic losses due to nonsinusoidal currents. The results confirm both the finite element method and the principle of superposition. Furthermore, it is shown that, due primarily to inaccuracy in measuring 60-Hz eddy current losses, application of the commonly accepted frequency squared rule can yield overly pessimistic loss predictions for typical power system harmonic frequencies.
机译：在确定电力系统中谐波电流的总体影响时，增加的变压器绕组损耗是重要的考虑因素。通常，假定由谐波电流引起的损耗随频率的平方而变化。本文的目的是将有限元方法的绕组损耗计算结果与单相配电变压器中的测量损耗进行比较，并测试非正弦电流引起的谐波损耗叠加原理。结果证实了有限元法和叠加原理。此外，结果表明，主要由于测量60 Hz涡流损耗时的不准确性，应用公认的频率平方规则可能会对典型的电力系统谐波频率产生过于悲观的损耗预测。

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