Multilevel UPQC Fed Grid Connected Hybrid System for Sag and Swell Mitigation
K. Manogna1, P. Tejaswi2

1K. Manogna, PG Student, M.Tech, G. Narayanamma Institute of Technology and Science Hyderabad (Telangana), India.
2P. Tejaswi, Assistant Professor, Department of EEE, G. Narayanamma Institute of Technology and Science Hyderabad (Telangana), India.
Manuscript received on 15 October 2019 | Revised Manuscript received on 24 October 2019 | Manuscript Published on 02 November 2019 | PP: 2452-2458 | Volume-8 Issue-2S11 September 2019 | Retrieval Number: B12870982S1119/2019©BEIESP | DOI: 10.35940/ijrte.B1287.0982S1119
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Abstract: This paper presents the cascade multilevel UPQC for sag and swell mitigation of a grid connected hybrid system. Power quality is the major problem facing by today’s power system. Due to the use of power electronic converters and devices the harmonics are injected into the grid that may result in grid failure. To mitigate these harmonics custom power devices are used. UPQC is the custom power devise that is used in this paper. The seven level cascade multilevel converter is used for both the series and shunt inverters of UPQC for better harmonic distortion. This system is connected to the PV+WIND hybrid system to provide effective utilization of the resources. The UPQC contains a DC link which controls the Sag and Swell, LG Fault and improves the power quality of the system. This system is simulated in MATLAB/SIMULINK.
Keywords: Cascade Multi Level Inverter (CMLI), Solar, Wind, PMSG, Voltage Sag, Voltage Swell, UPQC, DG, LG Fault.
Scope of the Article: Smart Grid Communications