Unexpected Transformer Tripping Provides Insight on Circulating Inrush Current

被引：0

作者：

Karnik, Neeraj ^{[1
]}

Kupcho, Jeremy ^{[1
]}

机构：

[1] Enel Green Power, Elect Engn Grp, Andover, MA 01810 USA

来源：

2023 IEEE POWER & ENERGY SOCIETY GENERAL MEETING, PESGM | 2023年

关键词：

Transformers; Inrush Current; Protective Relaying;

D O I：

10.1109/PESGM52003.2023.10252725

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Unexpected equipment operations in the Power System provide an opportunity to understand previously unexplored phenomena. The phenomenon of inrush current circulating in a transformer delta winding has only been explored before via simulation-based work. This paper uses unexpected tripping of a high-voltage power transformer to provide insight on circulating inrush current. It presents an engineering analysis of the transformer tripping event and highlights how inadvertent measurement of the circulating inrush current led to unexpected tripping. Further, it presents an expression to calculate the circulating inrush current and validates the same using data recorded by protective relays. By corroborating calculations with recorded data, the paper demonstrates how detailed analysis of unexpected events can enhance understanding of lesser-known phenomena.

引用

页数：5