• Nalini S
• A V K Meghashree

In the recent trends there is a vast increase in the Distributed Grid, in the distributed grid there will be a reverse power flow from MV grid to LV grid due to the variation of the load. The reverse power flow from LV to MV grids is due to high DG power production and low load consumption. The Smart Transformer controls the voltage waveform in LV grid, and it can offer the possibility to avoid the reverse power flow. By using a Smart Transformer the reverse power flow can be limited to some extinct. By use of this Smart Transformer there is no need of step-up or step-down voltage and controlling can also be done. By using Fuzzy Logic Controller at the MV side the harmonics are reduced. In this paper the mitigation of reverse power flow is carried out using a Fuzzy Logic Controller. Simulation work is carried out with MATLAB/Simulink Software. It is found that reduction in stability time from 0.15 second to 0.05 second is achieved and constant DC voltage is achieved without any transients.

Smart Transformer (ST), Fuzzy Logic Controller, Fuzzy sets, Phase Locked Loop (PLL).

"Fuzzy based reverse power flow control in ST-fed distribution grid", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.97-102, July-2018, Available :http://www.jetir.org/papers/JETIR1807735.pdf

"Fuzzy based reverse power flow control in ST-fed distribution grid", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp97-102, July-2018, Available at : http://www.jetir.org/papers/JETIR1807735.pdf