Effect of domestic power plants to the low voltage transformer areas from the nonlinear distortion point of view

Péter Görbe, Attila Magyar, Attila Fodor, K. Hangos

Research output: Contribution to journalArticle

Abstract

A case study is presented in this work, where a 4 kW photovoltaic domestic power plant, located in Hungary, has been examined. Based on the measured voltage and current signals we examined the frequency domain behaviour of the power plant and the effect to the power quality, mainly the total harmonic distortion, of the low voltage transformer area. Evaluation of the measurement database suggests that this type of synchronous power injection has serious effect on the voltage distortion of the low voltage grid, and this effect highly depends on the ratio of the injected power magnitude related to the nominal power of the inverter part. The available hardware structure enables us not only to eliminate this phenomenon but also to improve the existing quality of the low voltage grid. It needs only a modified control structure that can be implemented in the inverter control device. It causes power loss reduction in the low voltage grid. This reduction helps lowering the power loss in the phase conductor, and more radically in the neutral conductor of the transportation line. In the case of electric power production from fossil sources, it lowers the greenhouse gas emission, to lower the environmental and social-welfare effects of the climate change.

Original languageEnglish
Pages (from-to)1303-1308
Number of pages6
JournalChemical Engineering Transactions
Volume35
DOIs
Publication statusPublished - 2013

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Nonlinear distortion
Power plants
Electric potential
Economic and social effects
Harmonic distortion
Power quality
Gas emissions
Greenhouse gases
Climate change
Hardware

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Effect of domestic power plants to the low voltage transformer areas from the nonlinear distortion point of view. / Görbe, Péter; Magyar, Attila; Fodor, Attila; Hangos, K.

In: Chemical Engineering Transactions, Vol. 35, 2013, p. 1303-1308.

Research output: Contribution to journalArticle

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