Impact on Fuse Settings and Size of Photovoltaic Distributed Generation Source Due to Fault Current
B.V. Surya Vardhan1, Mohan Khedkar2, Nitin Kumar Kulkarni3

1B.V. Surya Vardhan, PG Student, Department of Electrical Engineering, VNIT, Nagpur (Maharashtra), India.
2Mohan Khedkar, Professor and Head, Department of Electrical Engineering, VNIT, Nagpur (Maharashtra), India.
3Nitin Kumar Kulkarni, Research Scholar, Department of Electrical Engineering, VNIT, Nagpur (Maharashtra), India.
Manuscript received on 09 February 2019 | Revised Manuscript received on 05 April 2019 | Manuscript Published on 28 April 2019 | PP: 151-154 | Volume-7 Issue-5C February 2019 | Retrieval Number: E10370275C19/19©BEIESP
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Abstract: Fault current contribution due to Grid connected Photovoltaic (PV) source has become a crucial factor in deciding the settings of protection equipments like fuse, circuit breaker etc. especially where there is a high level of penetration of PV, estimated in Megawatts. Setting of protection equipment, size of PV source to be interfaced with the grid depends on the magnitude of fault current from PV source, A inverter based distributed generation (PV) is considered here, it has limited fault current contribution but as grid penetration level increases fault current contribution becomes significant. This paper aims at determining the change in relay settings due to addition of PV sources and also determining the size (MVA rating) of PV source w.r.t. to its fault current contribution to avoid the existing setting changes of protection equipments. For this analysis ,a Real time system of Katol PV transmission Solar Power plant near Nagpur is taken. Using Single line to ground fault given at Grid side, the system is analysed &simulated in MATLAB Simulink environment. The simulation results show that, relay settings and Size (MVA rating) change considerably due to addition of PV, into grid.
Keywords: Photo- Voltaic (PV), Inverter, Fault Current Contribution, Protection Settings, Distributed Generation (DG).
Scope of the Article: Open Source: Challenges and Opportunities