Inter-Turn Short-Circuit Detection Through Differential Admittance Monitoring in Transformers

被引：1

作者：

Leal, H. Gustavo G. ^{[1
,2
]}

Meira, Matias ^{[1
,2
]}

Bossio, Guillermo R. ^{[3
]}

Ruschetti, Cristian R. ^{[1
,2
]}

Verucchi, Carlos J. ^{[1
,2
]}

机构：

[1] Natl Univ Ctr Prov Buenos Aires UNCPBA, INTELYMEC Grp, B7400JWI, Olavarria, Argentina

[2] UNCPBA, CONICET, CIFICEN, CICPBA, B7400JWI, Olavarria, Argentina

[3] Natl Univ Rio Cuarto, Fac Engn, Appl Elect Grp, X5804BYA, Rio Cuarto, Cordoba, Argentina

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2024年 / 73卷

关键词：

Electrical fault detection; fault protection; power transformers; FAULT PROTECTION; POWER;

D O I：

10.1109/TIM.2024.3390202

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：

Early detection of inter-turn short-circuits (ITSCs) in power transformers is essential for ensuring the safe and reliable operation of electrical power systems. Therefore, it is necessary to develop efficient detection strategies. In this article, a strategy for detecting ITSCs of a transformer based on monitoring electrical variables is proposed. An indicator for fault diagnosis obtained from the calculation of differential admittances is proposed. Experimental tests on a 5-kVA transformer validate the proposal. The strategy is sensitive to faults involving 1% of the winding turns with rated current in the fault loop. Besides, it is shown that the fault detection strategy is immune to changes in the load state, undervoltage, load or voltage unbalance, and transformer vector group.

引用

页码：1 / 1

页数：8

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