The single-phase grid integration in a stable environment is very important for the performance point of view of the grid. Therefore, to improve the stability within certain limits, a single-phase system along with Solar PV has been proposed. In circuit for the integration there is tracking of phase angle and frequency using Phase-Lock Loop techniques. In this to do so four models like: conventional Phase-Locked Loop (PLL), Synchronous Reference Frame-based PLL, Enhanced PLL (EPLL) and Second-Order Generalized Integrator (SOGI)-based PLL have been utilized and their performance tested on settling time. Further, current loop variables are passed through fractional order proportional-integral-derivative. In this, two different cases of amplitude jumps of 2 and 3% have been proposed for experimental analysis in order to check the viability of models proposed. The obtained results proved that the performance of SOGI-based PLL is more satisfactory for both cases.