Discrimination of inrush current and internal faults incorporating the MRA and BIGRU techniques in power transformers

Afsharisefat R.; Jannati M.; Shams M.

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Discrimination of inrush current and internal faults incorporating the MRA and BIGRU techniques in power transformers

机译：Discrimination of inrush current and internal faults incorporating the MRA and BIGRU techniques in power transformers

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? 2023 Elsevier B.V.Power transformer protection performs an essential role in power systems, ensuring a reliable power supply to the customers. One of the main challenges in differential protection of the transformers is to correctly discriminate inrush currents from internal faults and prevent the maloperation of the differential relay. In this regard, a novel differential protection method is proposed, which decomposes the differential current signal to multiple energy levels through the multi-resolution analysis (MRA) and selects the most useful feature to feed to the bidirectional gated recurrent unit (BIGRU) to classify the events. The use of the BIGRU results in the high accuracy and low implementation complexity of the proposed approach. Various simulations carried out on a 70 MVA transformer demonstrate that the proposed approach has an accuracy of 99.70 in discriminating inrush currents from internal faults in less than one-eighth of the power cycle.

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来源
《Electric Power Systems Research》 |2023年第6期|1.1-1.10|共10页
作者
Afsharisefat R.; Jannati M.; Shams M.;
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作者单位

Department of Electrical Engineering Shahreza Campus University of Isfahan;

Department of Computer Engineering Shahreza Campus University of Isfahan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
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关键词
Bidirectional gated recurrent unit (BIGRU); Differential protection; Inrush current; Internal fault; Maximal overlap discrete wavelet transform (MODWT); Multi-resolution analysis (MRA); Power transformers;

Discrimination of inrush current and internal faults incorporating the MRA and BIGRU techniques in power transformers

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