Voltage harmonic effect on losses in distribution transformers

Dao, Thinh; Halim, Hana Abdull; Liu, Z.; Phung, B.T.

doi:10.1109/icsgteis.2016.7885761

Cited by 11 publications

(7 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Harmonics of voltages and currents cause additional losses of active power in transformer. Figure 3 shows a classification diagram of transformer losses [14,17].…”

Section: Active Power Losses In Transformer Under Non-sinusoidal Condmentioning

confidence: 99%

“…In [14], the authors propose calculating the transformer no-load losses under non-sinusoidal conditions…”

Section: No-load Losses Under Non-sinusoidal Conditionsmentioning

confidence: 99%

“…This accelerates the aging process of insulating paper, transformer oil, and magnetic system. Recently, there has been a growing interest in evaluating the influence of harmonics on power transformers, as evidenced by the papers of the international conferences [10][11][12][13][14][15][16] This paper provides an overview of the characteristics used in publications to evaluate the influence of harmonics on transformers. The results of their calculations are presented.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Evaluation of the Influence of Non-sinusoidal Conditions on Power Transformers

Коверникова

Cuong

2018

E3S Web Conf.

View full text Add to dashboard Cite

The electrical equipment operation is cost-effective and reliable when operating parameters of the electrical network correspond to the rated data of the equipment. The real operation conditions, however, differ from those required for electrical equipment, which negatively affects its efficiency. The non-sinusoidal conditions in electrical networks are currently very common. The paper provides an overview of the characteristics obtained from an analysis of publications, which are used to evaluate the effect of the non-sinusoidal conditions on power transformers. The results of the calculation of these characteristics for a transformer installed at a railway traction substation are presented. Parameters of the non-sinusoidal conditions are obtained as a result of measurements.

show abstract

“…Harmonics of voltages and currents cause additional losses of active power in transformer. Figure 3 shows a classification diagram of transformer losses [14,17].…”

Section: Active Power Losses In Transformer Under Non-sinusoidal Condmentioning

confidence: 99%

“…In [14], the authors propose calculating the transformer no-load losses under non-sinusoidal conditions…”

Section: No-load Losses Under Non-sinusoidal Conditionsmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Evaluation of the Influence of Non-sinusoidal Conditions on Power Transformers

Коверникова

Cuong

2018

E3S Web Conf.

View full text Add to dashboard Cite

show abstract

“…In [2], voltage harmonic effects on transformers are considered for high-power low voltage motors. Harmonic contamination for distribution transformers is extensively examined using modest open and short circuit tests [3]. This is a simple method for studying the effects though they require the transformer to be put out of action for such tests.…”

Section: Introductionmentioning

confidence: 99%

Effective Method to Measure and Inspect the Hysteresis Loss of a Transformer

Chatterjee¹,

Das²,

Chatterjee³

2021

JEEICT

View full text Add to dashboard Cite

This paper presents a study on the significance of source side harmonics and their effects on transformers. Source side harmonics are typically present in power electronic sources which are commonly used in renewable applications. The continued outcome of source side harmonics is observed on the hysteresis curve of a transformer. Single-phase transformers are used in the proposed study to determine the effect of harmonics on magnetization and demagnetization cycles using an electronic operational amplifier-based integrator circuit. A technique is also presented for effectively storing and plotting the hysteresis curve from the measured data. After the hysteresis curve is obtained, it is compared with standard data and a conclusion is obtained from the results about the presence of harmonics in the source. The hysteresis curve is thus found without removing the transformer from operation. The study also proposes a modified hysteresis model for the transformer considering the effect of source harmonics. The proposed study is an effective tool for easy measurement and detection of harmonics. The MATLAB/Simulink based simulations with suitable experiments validate the proposed study.

show abstract

“…According to the diagram inFig. 2, load losses in the transformer consist of resistive losses in windings and eddy current losses[6,[8][9][10].…”

mentioning

confidence: 99%

Predicting the influence of the non-sinusoidal network mode on power transformers

Cuong¹,

Коверникова²

2019

E3S Web Conf.

View full text Add to dashboard Cite

The parameters of electrical network modes often do not meet the requirements of Russian GOST 32144-2013 and the guidelines of Vietnam. In the actual operating conditions while there is the non-sinusoidal mode in electrical networks voltage and current harmonics are present. Harmonics result in overheating and damage of power transformers since they cause additional active power losses. Additional losses lead to the additional heat release, accelerating the process of insulating paper, transformer oil and magnetic structure deterioration consequently shortening the service life of a power transformer. In this regard there arises a need to develop certain scientific methods that would help demonstrate that low power quality, for instance could lead to a decrease in the electrical equipment service life. Currently we see a development of automated systems for continuous monitoring of power quality indices and mode parameters of electrical networks. These systems could be supplemented by characteristics calculating programs that give out a warning upon detection of the adverse influence of voltage and current harmonics on various electrical equipment of both electric power providers and electric power consumers. A software program presented in the article may be used to predict the influence of voltage and current harmonics on power transformers.

show abstract

Voltage harmonic effect on losses in distribution transformers

Cited by 11 publications

References 13 publications

Evaluation of the Influence of Non-sinusoidal Conditions on Power Transformers

Evaluation of the Influence of Non-sinusoidal Conditions on Power Transformers

Effective Method to Measure and Inspect the Hysteresis Loss of a Transformer

Predicting the influence of the non-sinusoidal network mode on power transformers

Contact Info

Product

Resources

About