Rotor Ground Capacitance Coupled Harmonic Fault Detection Boundary in Large Synchronous Generators.
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| Title: | Rotor Ground Capacitance Coupled Harmonic Fault Detection Boundary in Large Synchronous Generators. |
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| Authors: | Du, Yongbin1 duyongbin@usth.edu.cn, Chao, Wenhao1 chaowenhao@usth.edu.cn, Zhang, Qian1 zhangqian37@usth.edu.cn, Zhao, Bingbing1 zhaobingbing@usth.edu.cn |
| Source: | Electronics & Electrical Engineering. 2026, Vol. 32 Issue 1, p15-24. 10p. |
| Subject Terms: | *Synchronous generators, *Fault diagnosis, *Nonlinear systems, *Electric capacity |
| Abstract: | Focusing on the impact of rotor-to-ground capacitance on passive ground fault detection in large-scale synchronous generators, this paper proposes an error analysis method using an amplitude deviation factor. Based on the classical equivalent circuit model of the excitation system, the proposed method explicitly incorporates the rotor-to-ground capacitance parameters. It systematically reveals the non-linear mechanism by which ground capacitance affects the harmonic voltage amplitudes of faults on both the DC and the AC sides. This study addresses the limitations of existing research, which is primarily confined to small and medium capacity machines and often neglects the ground capacitance. Verified by computer simulations and field data from large-scale units, the results demonstrate that the proposed method effectively clarifies the detection boundaries and improves fault detection accuracy in high-capacitance scenarios. [ABSTRACT FROM AUTHOR] |
| Database: | Energy & Power Source |
| FullText | Links: – Type: pdflink Text: Availability: 0 |
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| Header | DbId: enr DbLabel: Energy & Power Source An: 195104893 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Rotor Ground Capacitance Coupled Harmonic Fault Detection Boundary in Large Synchronous Generators. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Du%2C+Yongbin%22">Du, Yongbin</searchLink><relatesTo>1</relatesTo><i> duyongbin@usth.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Chao%2C+Wenhao%22">Chao, Wenhao</searchLink><relatesTo>1</relatesTo><i> chaowenhao@usth.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Qian%22">Zhang, Qian</searchLink><relatesTo>1</relatesTo><i> zhangqian37@usth.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Bingbing%22">Zhao, Bingbing</searchLink><relatesTo>1</relatesTo><i> zhaobingbing@usth.edu.cn</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Electronics+%26+Electrical+Engineering%22">Electronics & Electrical Engineering</searchLink>. 2026, Vol. 32 Issue 1, p15-24. 10p. – Name: Subject Label: Subject Terms Group: Su Data: *<searchLink fieldCode="DE" term="%22Synchronous+generators%22">Synchronous generators</searchLink><br />*<searchLink fieldCode="DE" term="%22Fault+diagnosis%22">Fault diagnosis</searchLink><br />*<searchLink fieldCode="DE" term="%22Nonlinear+systems%22">Nonlinear systems</searchLink><br />*<searchLink fieldCode="DE" term="%22Electric+capacity%22">Electric capacity</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Focusing on the impact of rotor-to-ground capacitance on passive ground fault detection in large-scale synchronous generators, this paper proposes an error analysis method using an amplitude deviation factor. Based on the classical equivalent circuit model of the excitation system, the proposed method explicitly incorporates the rotor-to-ground capacitance parameters. It systematically reveals the non-linear mechanism by which ground capacitance affects the harmonic voltage amplitudes of faults on both the DC and the AC sides. This study addresses the limitations of existing research, which is primarily confined to small and medium capacity machines and often neglects the ground capacitance. Verified by computer simulations and field data from large-scale units, the results demonstrate that the proposed method effectively clarifies the detection boundaries and improves fault detection accuracy in high-capacitance scenarios. [ABSTRACT FROM AUTHOR] |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=enr&AN=195104893 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.5755/j02.eie.43959 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 10 StartPage: 15 Subjects: – SubjectFull: Synchronous generators Type: general – SubjectFull: Fault diagnosis Type: general – SubjectFull: Nonlinear systems Type: general – SubjectFull: Electric capacity Type: general Titles: – TitleFull: Rotor Ground Capacitance Coupled Harmonic Fault Detection Boundary in Large Synchronous Generators. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Du, Yongbin – PersonEntity: Name: NameFull: Chao, Wenhao – PersonEntity: Name: NameFull: Zhang, Qian – PersonEntity: Name: NameFull: Zhao, Bingbing IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 01 Text: 2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 13921215 Numbering: – Type: volume Value: 32 – Type: issue Value: 1 Titles: – TitleFull: Electronics & Electrical Engineering Type: main |
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