Study on the Contamination Rate of Mineral Oil in Natural-Ester Retrofilled Transformers

被引：1
|
作者：
Montero, Andres [1 ]
Garcia, Belen [1 ]
Burgos, Juan Carlos [1 ]
机构：
[1] Univ Carlos III Madrid, Dept Elect Engn, Leganes 28911, Spain
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2023年 / 30卷 / 04期
基金：
欧盟地平线“2020”;
关键词：
Contamination rate; dielectric response; iodine index; kraft paper; natural ester (NE); oil-paper insulation; relative permittivity; retrofilled transformer; SAFETY;
D O I：
10.1109/TDEI.2023.3298314
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The replacement of mineral oil (MO) by ester (retrofilling) is a practice used in power transformers to reduce fire and environmental risk. Although measures are taken to remove traces of oil on the paper, a certain amount of MO remains, which migrates over time. This article presents a study to evaluate the migration of MO from paper to ester using techniques such as the iodine value or the measurement of permittivity and dielectric losses.
引用
收藏
页码：1641 / 1648
页数：8
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