Harmonics elimination techniques in solar energy integration into smart grid

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2019-1

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Abdulsalam, Abdulkadir Ahmed

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Energy availability is a growing concern of the 21st century worldwide and generating this energy should not affect the envinment and its inhabitants negatively. The modern energy transmission and distribution system became more interesting with the advent of smart grid and integrating renewable energy sources into the grid creates a challenging problem of managing harmonics. To effectively integrate renewable energy as well as minimizing harmonics content in the power system smart grid importance was highlighted, with value of harmonic current content measured by the total harmonic distortion (THD) based on electrical system rated current value. This thesis is aimed towards reviewing the available techniques in reducing the harmonic distortions for effective and efficient transmission of renewable energy in smart grid integration. The use of an improved control strategy was proposed which significantly improves the effectiveness of harmonic elimination in smart grid systems. The two-level and there-level inverters in solar integration to the smart grid were studied, thereby presented a controlled hydrid filtering technique that implemented three-level inverter, that provides effective means of harmonics elimination. There was significant improvement of over twenty percent in the use of three-level inverter against two-level, even with the about 25% reduction in cost, the two-level inverter losses over forty percent of power as compared to three-level. With tens of thousands of grid connected inverters globally, the cost of three-level ineverter will achieved over 15% lower cost compared with the two-level topology in just a year. Matlab/Simulink software was use to simulate the model using passive, active and hybrid filter with and without control and the hybrid method with control showed the lowest THD value, which was within acceptable limits.

Subject Keywords

Hybrid Filter, Total Harmonic Distortion, Transmission & Distribution System, Smart Grid

URI

https://hdl.handle.net/11511/69814

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Northern Cyprus Campus, Thesis

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Citation Formats

A. A. Abdulsalam, “Harmonics elimination techniques in solar energy integration into smart grid,” M.S. - Master of Science, Middle East Technical University, 2019.