• Ankush Gorka
• Dr. Tanuj Manglani

This paper presents an islanding detection method in the distribution system in the presence of solar energy using an algorithm based on the Stockwell Transform. The study has been performed in MATLAB/Simulink environment using an IEEE-13 bus test system. A solar PV system of capacity 1 MW is integrated to the IEEE-13 buses test system. The islanding event is simulated by disconnecting the test system from the utility grid network and voltage is captured on the bus on which solar PV system is connected. The voltage signals are decomposed using the Stockwell transform and S-matrix is obtained. An island index is proposed to detect islanding event which is obtained by summing the absolute values of each column of the S-matrix. Second island index is also proposed based on the phase angle of maximum value of the each column of the S-matrix. The frequency variations and rms values of voltage have been analyzed on the bus 650 of the test system during each case of the islanding event. Various case studies establish the effectiveness of the proposed study.

Distribution system; distributed generation; islanding; Stockwell transform.

"Detection of Islanding Event in Distribution System in the Presence of PV System ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 9, page no.72-75, September-2018, Available :http://www.jetir.org/papers/JETIR1809312.pdf

"Detection of Islanding Event in Distribution System in the Presence of PV System ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 9, page no. pp72-75, September-2018, Available at : http://www.jetir.org/papers/JETIR1809312.pdf