Transformer Winding Modeling based on Multi-Conductor Transmission Line Model for Partial Discharge Study

Hosseini, Seyedmohsen; Baravati, Peyman Rezaei

doi:10.5370/jeet.2014.9.1.154

Cited by 18 publications

(10 citation statements)

References 8 publications

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“…Mutual inductances that exist between different turns of each winding are also ignored which cause errors in modeling and PD localization. One of the best methods to calculate the parameters of detailed models is applying the finite element method (FEM) by Ansoft Maxwell software [10,11]. This paper has made use of this method to calculate the exact amount of parameters such as mutual inductances.…”

Section: High-frequency Models Of Transformer Windingmentioning

confidence: 99%

Partial Discharge Localization Based on Detailed Models of Transformer and Wavelet Transform Techniques

Hosseini¹,

Baravati²

2015

Journal of Electrical Engineering and Technology

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Partial Discharge (PD) is a physical phenomenon, which causes defects and damages to the insulation. This phenomenon is regarded as the most important source of fault and defect in power transformers. Therefore, methods of high speed and precision are considered of special importance for the maintenance of transformers in localization of the origin of partial discharge. In this paper, the transformer winding is first modeled in a transient state by using RLC ladder network and multiconductor transmission line (MTL) models. The parameters of the two models were calculated by Ansoft Maxwell software, and the simulations were performed by Matlab software. Then, the PD pulses were applied to the models with different widths of pulses. With regard to the fact that the signals received after the application of PD had a variable frequency nature over time, and based on the wavelet transform and signal energy, a new method was presented for the localization of PD. Ultimately; the mentioned method was implemented on a 20 kV winding distribution transformer. Then, the performances of the models used in this paper, including RLC and MTL models, were compared in different frequency bands for the correct distinction of partial discharge location.

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Section: High-frequency Models Of Transformer Windingmentioning

confidence: 99%

Partial Discharge Localization Based on Detailed Models of Transformer and Wavelet Transform Techniques

Hosseini¹,

Baravati²

2015

Journal of Electrical Engineering and Technology

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“…The multi-conductor transmission line (MTL) model has been investigated in various papers to study the transient behavior of different transformers. Also, using the optimized MTL model, the partial discharge has been studied in power transformer windings [8,22]. Jafari et al have introduced a modified MTL model for partial discharge localization in power transformers [23].…”

Section: Introductionmentioning

confidence: 99%

Multi-Conductor Transmission Line Model of Split-Winding Transformer for Frequency Response and Disk-to-Disk Fault Analysis

Sobouti

Azizian

Bigdeli

et al. 2021

IJE

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For transformer designers, split-winding transformer modeling in different frequency ranges is of great importance. In this paper, for the first time, a multi-conductor transmission line model is proposed for high-frequency modeling of the split-winding transformer. In this model, all the turns in layers and disks have been considered and the model's parameters have been calculated using the finite element method. In order to validate the proposed model, the results are compared with the result of a model, which is based on finite element and coupled field-circuit. It is shown that the introduced model has good accuracy and it can be employed for split-winding transformer modeling in different frequency ranges. In addition, using the validated multi-conductor transmission line model, the frequency response of the split-winding transformer and disk-to-disk short circuit fault are analyzed.

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“…In 2000s, several researchers from Xidian University in China defined the generalized resonance as the sudden rise of electromagnetic scattering at certain frequencies, based on their works on large electrical scattering objects including airplanes, ships, etc [10][11][12][13][14]. With in-depth studies and analyses of generalized resonance based on transmission line theory and generalized resonance cavity theory, they inferred generalized Foster theorem and the formulas for calculating the quality factor Q and the preconditions of generalized resonance.…”

Section: Generalized Resonances In a Multi-antenna Systemmentioning

confidence: 99%

“…Ref. [10][11][12][13][14] presented acceptable estimations of multi-antenna system's resonant frequency in near field region. Hence, if we take a transmission line in a wide space as a similar open electromagnetic system, we can introduce generalized resonance theory into studies of RRI from electrically large objects, namely transmission lines here, using the similar ways in [14].…”

Section: Introductionmentioning

confidence: 99%

“…an open electromagnetic field, into a study targeting at the resonance quality factor of a multi-port network based on generalized resonance theory and model-based parameter estimation (MBPE) [10][11][12][13][14]. In the study, MBPE is mainly used to construct the interpolating function directly associated with resonant frequencies and electromagnetic fields in the complex frequency domain.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Resonant Frequency Estimation of Reradiation Interference at MF from Power Transmission Lines Based on Generalized Resonance Theory

Tang¹,

Chen²,

Zhao³

et al. 2015

Journal of Electrical Engineering and Technology

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-The resonant mechanism of reradiation interference (RRI) over 1.7MHz from power transmission lines cannot be obtained from IEEE standards, which are based on researches of field intensity. Hence, the resonance is ignored in National Standards of protecting distance between UHV power lines and radio stations in China, which would result in an excessive redundancy of protecting distance. Therefore, based on the generalized resonance theory, we proposed the idea of applying model-based parameter estimation (MBPE) to estimate the generalized resonance frequency of electrically large scattering objects. We also deduced equation expressions of the generalized resonance frequency and its quality factor Q in a lossy open electromagnetic system, i.e. an antennatransmission line system in this paper. Taking the frequency band studied by IEEE and the frequency band over 1.7 MHz as object, we established three models of the RRI from transmission lines, namely the simplified line model, the tower line model considering cross arms and the line-surface mixed model. With the models, we calculated the scattering field of sampling points with equal intervals using method of moments, and then inferred expressions of Padé rational function. After calculating the zero-pole points of the Padé rational function, we eventually got the estimation of the RRI's generalized resonant frequency. Our case studies indicate that the proposed estimation method is effective for predicting the generalized resonant frequency of RRI in medium frequency (MF, 0.3~3 MHz) band over 1.7 MHz, which expands the frequency band studied by IEEE.

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Transformer Winding Modeling based on Multi-Conductor Transmission Line Model for Partial Discharge Study

Cited by 18 publications

References 8 publications

Partial Discharge Localization Based on Detailed Models of Transformer and Wavelet Transform Techniques

Partial Discharge Localization Based on Detailed Models of Transformer and Wavelet Transform Techniques

Multi-Conductor Transmission Line Model of Split-Winding Transformer for Frequency Response and Disk-to-Disk Fault Analysis

Resonant Frequency Estimation of Reradiation Interference at MF from Power Transmission Lines Based on Generalized Resonance Theory

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