Influence of Distorted Voltage and Harmonics on High-frequency Transient Model of Transformers

抄録

Many components in the power grid are developing towards miniaturization. To control the volume and weight of transformers, their working frequency is constantly improving. The influence of high frequency on the distributed parameters of transformers has increased significantly, resulting in voltage distortion, harmonics, and other power quality problems that complicate the internal electromagnetic energy storage. This article analyzes the connection relationship between the topology of stray capacitance parameters and the topology of transformer inductance. Furthermore, a transient model construction method for high frequency transformers under the influence of distorted voltage and harmonics is proposed. The proposed method can describe the response characteristics of transformers under complex operating conditions, such as transient inrush current and the distortion rate of new energy grid connected voltage. The proposed model is suitable for simulation analysis of new hybrid systems.