It has been found that DG integration increases the magnitudes of fault current hence, it will have impact on relay co-ordination. Further analysis is carried for the fault current level with different locations and number of SPP DG. This paper presents the power flow computation on modified IEEE 4-bus system for different integrated positions of SPP. The impact of orientation of point of common coupling (PCC) of SPP on distribution grid changes the entire power flow computation and hence, coordination of protection devices. Integration of solar photo-voltaic plant (SPP) on distribution grid increases flexibility of the system but lacking behind in terms of convention protection scheme. Distributed generation (DG) specifically from solar energy is gaining much attention.
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