2015
DOI: 10.1109/tpwrd.2015.2431972
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Modeling, Analysis, and Detection of Internal Winding Faults in Power Transformers

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Cited by 38 publications
(28 citation statements)
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“…Поэто-му необходимо обратить внимание на сущест-вующие системы технического обслуживания и ремонта, а также общую оценку состояния надеж-ности силовых масляных трансформаторов рас-пределительных подстанций [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Оценка технического состояния оборудования электрических станций и подстанций сопряжена с высокой степенью износа электросетевого оснащения, что влияет на состояние и режимы работы обору-дования.…”
Section: создание рациональной системы ремонта масляных трансформаторовunclassified
“…Поэто-му необходимо обратить внимание на сущест-вующие системы технического обслуживания и ремонта, а также общую оценку состояния надеж-ности силовых масляных трансформаторов рас-пределительных подстанций [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Оценка технического состояния оборудования электрических станций и подстанций сопряжена с высокой степенью износа электросетевого оснащения, что влияет на состояние и режимы работы обору-дования.…”
Section: создание рациональной системы ремонта масляных трансформаторовunclassified
“…However, some types of internal faults of power transformers are undetectable by these online monitoring and diagnostic methods. According to a statement in [8], statistics show that 70% to 80% of failure regarding power transformers are caused by undetected winding faults. Commonly used approaches for detecting incipient winding faults are usually offline tests, such as the short-circuit impedance measurement (SCI) [9], low-voltage impulse tests (LVI) [10], and frequency response analysis (FRA) [11][12][13][14][15].…”
Section: Introductionmentioning
confidence: 99%
“…Among the existing test approaches, FRA is a well-recognized technique for diagnosing incipient winding faults in power transformers [11][12][13][14][15]. Depending on the types of injected signals, there are two major types of FRA, which are the sweep frequency response analysis (SFRA) and impulse frequency response analysis (IFRA) [8]. The injected signal of SFRA is a sinuous wave, and the response signal is measured in the frequency domain.…”
Section: Introductionmentioning
confidence: 99%
“…Malfunction of long-term transformers often occurs owing to the impact of transient overvoltages. According to [1], statistics show that between 70-80% of the number of total transformer failures are eventually traced back to undetected internal winding faults. Winding faults are a result of severe deterioration of the turn insulation, which tend to cause a breakdown in the dielectric strength of the insulation.…”
Section: Introductionmentioning
confidence: 99%
“…However, these tests cannot detect an incipient winding turn to turn fault very fast [16]. FRA is most frequently used to assess the state of windings [17], such as deformations and turn to turn short-circuit [1,16], by measuring their broad-spectrum frequency response transfer function. FRA can be divided into two main types, based on the different signals injected into the transformer: sweep frequency response analysis (SFRA) [18][19][20] and impulse frequency response analysis (IFRA).…”
Section: Introductionmentioning
confidence: 99%