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首页> 外文期刊>International Journal of Electrical Engineering: Transactions of the Chinese Institute of Engineers, Series E >COMPARATIVE STUDY ON SHORT-CIRCUIT IMPEDANCE CALCULATION METHOD OF CONTROLLABLE REACTOR OF TRANSFORMER TYPE
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COMPARATIVE STUDY ON SHORT-CIRCUIT IMPEDANCE CALCULATION METHOD OF CONTROLLABLE REACTOR OF TRANSFORMER TYPE

机译：变压器型可控反应器短路阻抗计算方法的比较研究

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摘要

It is crucial to calculate short-circuit impedance accurately for the theory analysis of controllable reactor of transformer type (CRT). In this paper, calculation principle of three typical methods, which are self-mutual impedance method, short-circuit impedance method and finite element method (FEM), are analysed. Then, take the concentric CRT for example, calculation error of the three methods is verified by experiment. Besides, the three calculation methods are compared in multi-aspect, including computational complexity, applicability, accuracy, calculation error, etc. The results indicate that the short-circuit impedance method is simple and the most suitable method in the engineering calculation of simple structures. Although the self-mutual impedance method has more computational complexity than the short-circuit impedance method, the core saturation, eddy current and skin effect can be considered in the calculation of it. FEM takes the longest calculation time, but it is the closest method to real value, besides, it has wide applicability and high precision, especially, in the calculation of complex structures, and can get losses and magnetic flux distribution. The comparison of the three methods employed to calculate the short-circuit impedance is illustrated detailedly in combination with the results shown in this paper.
机译：对于变压器型（CRT）可控反应器的理论分析，可以确定计算短路阻抗至关重要。本文分析了三种典型方法的计算原理，即自互阻抗方法，短路阻抗法和有限元方法（FEM）。然后，采用同心CRT，例如，通过实验验证了三种方法的计算误差。此外，三个计算方法在多方面进行了比较，包括计算复杂性，适用性，准确性，计算误差等。结果表明短路阻抗方法简单且最合适的工程计算方法简单结构。尽管自相互阻抗方法具有比短路阻抗方法更多的计算复杂性，但是可以考虑在计算中考虑核心饱和度，涡流和皮肤效果。 FEM需要最长的计算时间，但它是实际值的最接近的方法，除了，它具有广泛的适用性和高精度，特别是在复杂结构的计算中，可以获得损失和磁通量分布。用于计算短路阻抗的三种方法的比较结合本文所示的结果。

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