Determination of distribution function of inrush current in three phase transformer using Monte Carlo method

Bolhasani, Mahyar; Kamangar, Somayeh Sadat Hashemi; Tavakoli, Saman Dadjo

doi:10.1109/upec.2012.6398660

Cited by 3 publications

(3 citation statements)

References 7 publications

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“…By substituting (13) into (10)- (11), and by using the Clarke transformation we obtain decoupled equations:…”

Section: Space Vector Model Of Coupled Three-phase Inductorsmentioning

confidence: 99%

Space Vector Transients of Three-phase Transformers

Bellan

2020

International Journal of Circuits, Systems and Signal Processing

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This paper is devoted to the transient analysis of three-phase transformers by means of the space vector tool. Space vector definition is based on the Clarke transformation, operating in the time domain. Thus, the space vector is better suited to transient analysis when compared with approximate approaches based on the phasor symmetrical-component transformation. Space-vector equivalent circuits are derived for three-phase transformers with Wye and Delta connections. A case study, consisting in the transient due to a capacitor bank insertion, shows that the proposed space-vector approach can clearly evidence the asymmetrical transient behavior of the phase variables in terms of different peak levels and oscillations amplitude.

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“…By substituting (13) into (10)- (11), and by using the Clarke transformation we obtain decoupled equations:…”

Section: Space Vector Model Of Coupled Three-phase Inductorsmentioning

confidence: 99%

Space Vector Transients of Three-phase Transformers

Bellan

2020

International Journal of Circuits, Systems and Signal Processing

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“…Hence, recently, a number of studies were devoted to studying the impacts of parameter uncertainties on the calculation of transformer energisation transients [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

“…However, since the circuit breaker closing time, transformer core residual flux as well as system conditions are normally of stochastic nature, the assessments performed using the deterministic approach as mentioned above could underestimate the outcome or at least unable to give the probability distribution of the occurrence of inrush transients, therefore they cannot assist the realistic estimation of their adverse impacts on the system. Hence, recently, a number of studies were devoted to studying the impacts of parameter uncertainties on the calculation of transformer energisation transients [17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Stochastic assessment of voltage dips caused by transformer energisation

Peng¹,

Li²,

Wang³

et al. 2013

IET Generation, Transmission & Distribution

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Energisation of large power transformers may cause significant voltage dips, of which the severity largely depends on a number of parameters, including circuit breaker closing time, transformer core residual flux and core saturation characteristic, and network conditions. Since most of the parameters are of stochastic nature, Monte Carlo simulation was conducted in this study to stochastically assess the voltage dips caused by transformer energisation in a 400 kV grid, using a network model developed and validated against field measurements. A dip frequency pattern was identified over 1000 stochastic runs and it was found to be sensitive to residual flux distribution but insensitive to closing offset time distribution. The probability of reaching the worst case dip magnitude (estimated under the commonly agreed worst energisation condition) was found to be lower than 0.5%; about 80% of the dips are likely to be with magnitudes lower than 0.6 pu of the worst case. Nevertheless, there are dips with magnitudes exceeding the worst case dip magnitude, indicating the inadequacy of deterministic assessment approach by using the commonly agreed worst energisation condition.

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Space Vector Analysis of Three-Phase Transformer Transients

Bellan

2020

2020 24th International Conference on Circuits, Systems, Communications and Computers (CSCC)

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Determination of distribution function of inrush current in three phase transformer using Monte Carlo method

Cited by 3 publications

References 7 publications

Space Vector Transients of Three-phase Transformers

Space Vector Transients of Three-phase Transformers

Stochastic assessment of voltage dips caused by transformer energisation

Space Vector Analysis of Three-Phase Transformer Transients

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