Study on the Design of Transformer Winding with Voltage Regulation and Interrupting Capacity of Switch Gear

電壓調整率與開關設備啟斷容量於變壓器繞組設計之研究

鄭至焜(Chih-Kun Cheng)

《中國機械工程學刊》 40卷4期 (2019/08) Pp. 401-406

摘要

This paper proposes an approach for the design of transformer winding with voltage regulation and interrupting capacity of switch gear. Different from the symmetric winding structure of traditional transformer designs, the proposed method can provide a suitable leakage inductance for voltage regulation and short-circuit current in the transformer. To estimate a satisfactory structural for the winding configuration before manufacture, the leakage inductance is derived from the structural parameters of the transformer. Through the theoretical analyses, the leakage inductance is estimated in the multi-layered structure and a desirable winding configuration is presented that allows the appropriate voltage regulation and short-circuit current. Moreover, the inferential results are successfully obtained substantiation from the experiments.

關鍵字

leakage inductance ； voltage regulation ； short-circuit current ； interrupt current ； asymmetrical winding

並列摘要

本文提出了一種藉由變壓器繞組結構配置改變漏磁電抗的方法。與傳統變壓器設計的對稱繞組結構不同，本方法對變壓器的電壓調整率、開關設備啟斷容量及短路電流限制，提供合適的漏磁電抗值。為了滿足製造前即對繞組特性有準確的預估，論述中以設計時所獲得的變壓器各類材料的尺寸結構參數，預先推導出漏磁電抗值。於製造前即可提供使用者完整的訊息，免於製作完成後再修正，也降低後續所衍生出的材料與時間浪費。經由理論分析，對多層結構中的漏電電感進行了估計，提出了一種理想的繞組結構，使其具有適當的電壓調整率和短路電流。最後也於實驗中成功地印證推理結果。