基于宽频等效模型的10kV配电变压器过电压研究

A Study on the Overvoltage of the 10 kV Distribution Transformer Based on the Broadband Equivalent Model

本文主要对10kV配电变压器不同理论模型中的电磁暂态耦合机理及谐波振荡特性进行了理论分析,并通过现场试验及软件仿真的方式,提出了兼顾高低频段电磁耦合特性的配电变压器宽频等效模型,并通过现场试验及软件仿真方式验证了该模型的正确性,为10 kV配变过电压研究提供了理论参考。

This paper theoretically analyzes the electromagnetic transient coupling mechanism and characteristics of harmonic oscillation in different theoretical models of the 10 kV distribution transformer.It proposes the broadband equivalent model of the distribution transformer,giving consideration to the characteristics of both high and low frequency electromagnetic couplings.The correctness of the model is verified by means of the field test and software simulation,which provides theoretical reference for overvoltage research of the 10 kV distribution transformer.