Effect of Large-scale PV system on Load Flow short circuit and harmonics in Libyan Electrical Network

the connection of Photovoltaic (PV) generator to electrical grids greatly affects the performance of existing networks. Where the penetration of PV solar system will impose significant technical barriers for the effective operation of power systems. Power injections from PVs change network power flows, modifying energy losses and voltage profile, short circuit level, harmonics of the system. Proper locations of PVs in power systems are important to obtain the maximum potential benefits. The impact of PV should be taken into account when planning PV interconnection. Therefore, this paper investigates the impact of four large- scale PV solar power plants connected to Libyan electrical grid, exactly at Bin-Waleed electrical network loop. Load flow analysis, in order to check the loaded lines, and bus voltages, on the Ben-Walid electrical network, and short circuit level were analyzed with and without the presence of photovoltaic (PV) power plants.In addition, The Total Harmonic Distortion of Voltage (THDv) at PCC will be recorded and the obtained THDv values will be compared with the recommended voltage distortion limits (IEEE Std. 519-1994)The simulation is performed under full load condition using NEPLAN software.