摘要详情

ID / 提交时间

88 / 2023-10-14 17:10:29

标题

Modeling of Frequency Variation Characteristics under Load Side Response of Transformers

关键字

Autotransformer,Frequency,variation characteristics,Frequency response,Resonance point

主题及专题

4.High voltage and insulation technology > (2)、Sensing, monitoring and diagnostics

状态

全文录用

作者

Xin Wang / Ltd.；Yunnan Power Grid Co.

Guochao Qian / Yunnan Power Grid Co., Ltd. Electric Power Science Research Institute

Shun He / Yunnan Power Grid Co.； Ltd. Electric Power Science Research Institute

Hongwen Liu / Yunnan Power Grid Co.； Ltd. Electric Power Science Research Institute

Jin Hu / Electric Power Research Institute； Ltd； Yunnan Power Grid Co.

Weiju Dai / Yunnan Power Grid Co.； Ltd. Electric Power Research Institute

Kun Yang / Yunnan Power Grid Co.； Ltd. Electric Power Science Research Institute

Jialei Zang / Southwest Jiaotong University

摘要

This article takes the laboratory autotransformer as the modeling object, and further optimizes the equivalent model of the transformer by studying the relationship between the equivalent parameters of the transformer winding and frequency. Firstly, the magnetic conductivity characteristics of the transformer core are obtained through numerical calculation. Furthermore, the frequency variation characteristics of the inductance are obtained in finite element software. The effectiveness of the model is verified by comparing the load side response of the transformer measured, without considering frequency variation, and considering frequency variation. The results show that compared with the measured values, the maximum errors of the resonant point frequency considering frequency variation characteristics under normal and axial displacement are 0.1659 and 0.2882, respectively. It can be seen that considering the frequency variation characteristics of the winding can make the frequency response curve obtained through analysis more accurate.