Harmonics From Transformer Saturation

Dommel, H.W.; Yan, Andrew; Shi, Wei

doi:10.1109/mper.1986.5527730

Cited by 6 publications

(8 citation statements)

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“…A part of these measures is limited to the connection of some reactance coils (in order to reduce the weights of the high harmonics in the waveforms of the currents from the secondary winding) or to the connection of some devices for the harmonics filtering between the transformer's secondary winding and the fully controlled rectifier with thyristors [29].…”

Section: ▀▀ ▀▀mentioning

confidence: 99%

On harmonics from a power transformer used in the excitation circuit of a power group

Nicolae

2010

Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010

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One presents some aspects related to the behavior of a three-phase power transformer used in the excitation circuit of a power group. The excitation transformer is directly supplied from the three-phase generator terminals. It supplies a fully controlled rectifier with thyristors, through which the main generator's excitation winding is supplied. The currents flowing through the primary and secondary windings of the excitation transformer are recorded. The data acquisition systems used during the recording process were especially designed and realized for this application. Using an original software, the recorded waveforms for currents and voltages were processed. The significant harmonic distortion from the transformer's primary and secondary winding proves their significant distorting regime, that affects their lifetime.

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Section: ▀▀ ▀▀mentioning

confidence: 99%

On harmonics from a power transformer used in the excitation circuit of a power group

Nicolae

2010

Proceedings of 14th International Conference on Harmonics and Quality of Power - ICHQP 2010

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“…Since most of the resulting equations from practical problems can not be solved exactly, we must resort to some kind of approximation to figure out the behavior of the electric power system. A precise simulation of the electric power system with nonlinear and time varying components can be obtained in the harmonic domain [1], time and frequency hybrid domain [2], and time domain [3] frameworks. The individual advantages and disadvantages of these frames of reference are analyzed in [2].…”

Section: Introductionmentioning

confidence: 99%

Analysis of electrical networks using fine-grained techniques of parallel processing based on OpenMP

Rico-Hernandez

Ramos-Paz

2011

2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control

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This paper presents a fine-grained parallel processing technique applied to the transient and steady state analysis of electric power systems containing linear, nonlinear and time varying elements. This approach is based on the application of the parallel processing platform named OpenMP. This work presents five test cases that show the advantage of using the proposed technique compared with traditional sequential techniques.

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“…The model cannot provide adequate results when the voltage distortions at the harmonic source buses are high. In order to improve its accuracy, harmonic-voltagedependent current source models have been proposed, which leads to the well-known "iterative harmonic analysis (IHA)" method [2]- [5]. The IHA can be viewed as a Gaussian iteration method to the harmonic power flow problem.…”

Section: Introductionmentioning

confidence: 99%

A non-iterative harmonic power flow method for accurate harmonic calculations

Sun

Zhang

et al. 2008

2008 13th International Conference on Harmonics and Quality of Power

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This paper presents a new harmonic power flow method for the AC/DC converters. The method is based on a unique model for the AC/DC converters. The model transforms the time domain nonlinear characteristics of the converter into a frequency domain linear admittance matrix. The matrix represents the coupling among the converter AC side harmonic voltages and currents accurately. An interesting feature of this model is that its elements do not vary with the harmonic voltage conditions of the system. As a result, a non-iterative harmonic power flow algorithm is developed with the model. Case studies show that the model can be further simplified without significant loss of accuracy, which leads to an even simpler harmonic power flow algorithm.

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Harmonics From Transformer Saturation

Cited by 6 publications

References 0 publications

On harmonics from a power transformer used in the excitation circuit of a power group

On harmonics from a power transformer used in the excitation circuit of a power group

Analysis of electrical networks using fine-grained techniques of parallel processing based on OpenMP

A non-iterative harmonic power flow method for accurate harmonic calculations

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