INTRODUCTIONElectric power quality is one of the important factors hindering the supply of electricity to all customers in a safe, reliable and economical manner . Power quality is defined as electrical energy consisting of a specific range of voltage, current, and frequency that results in normal operation of the customer's equipment. However, this situation is difficult to achieve in practice. The term harmonics referring to the quality of power in an ideal world would mean purity of voltage and purity of current waveform in its sinusoidal form. Today, electronic equipment has become more powerful and more versatile, used for the conversion, variation and regulation of electrical energy in commercial, industrial and residential installations. As a result, harmonic distortion has a catastrophic impact on an electrical system and equipment: increasing harmonic “pollution”. Solar energy is the radiant light and heat of the Sun that has been harnessed by humans since ancient times using a constantly evolving range of technologies. . Photovoltaics is derived from the combination of two words, “Photo” and “Voltaic”. Photo means light and Voltaic means electricity. This is a technology that converts light directly into electricity. In this paper, the inverter of the photovoltaic system is also used to compensate/neutralize the harmonics generated by non-linear load and thus can help reduce harmonic pollution on the distribution network. In Section II, the system model is described while in Section III, the performance and results of the detailed simulation study of the proposed PV-STATCOM are presented and discussed. Finally, Section IV concludes the study of this paper.SYSTEM MODELThe single line diagram of the distribution network model can be found before......the middle of the paper......the aspects are summarized in Fig. 3.28. A and B represent the injection of harmonic active and reactive harmonic powers by the inverter of the photovoltaic solar park to compensate for the harmonics generated by the electronic power loads connected downstream of the system respectively at night and during the day. When the electricity production of the photovoltaic system reaches its rated value during the day, the solar park inverter cannot be used to supply the reactive power. For less active energy production, it is still possible to provide active and reactive power simultaneously. However, during the night, the photovoltaic system will consume a very small amount of active power to maintain the voltage across the DC side capacitor. This active power is essential to compensate for losses linked to the inverter. When the PV system produces no active power, the available reactive power capacity is 100%.