A Case Study: Transformer Failure Detected with Real-time DGA Monitoring

被引：0

作者：

Leivo, Senja ^{[1
]}

Sattler, Diego ^{[2
]}

Duval, Michel ^{[3
]}

Chiarella, Carlos ^{[2
]}

机构：

[1] Vaisala Oyj, Helsinki, Finland

[2] CTM Salto Grande, Salto, Uruguay

[3] Hydro Quebec, Quebec City, PQ, Canada

来源：

2023 IEEE ELECTRICAL INSULATION CONFERENCE, EIC | 2023年

关键词：

DGA; online monitoring; gas formation; fault gases; transformer condition; asset end of life;

D O I：

10.1109/EIC55835.2023.10177343

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 paper discusses a failure of a generation step-up transformer (GSU) and the fault gas formation pattern over its last few days compared to the earlier occurring overheating issue. The DGA based diagnostics demonstrates how the fault type evolved from mild overheating to possible carbonization of paper. The online DGA monitor sent a gas alarm signal to SCADA at an early state of the gassing event. Thus, the utility's maintenance team was able follow the situation closely and simultaneously execute mitigation actions to secure operations.

引用

页数：4