Power quality (PQ) is a major issue in electrical distribution networks. Imbalance non-linear loads cause issues in power quality, such as current harmonics, low power factor, voltage harmonics, sag, and swell voltages below the value required by consumers especially sensitive loads. The Unified Power Quality Conditioner (UPQC), a combination of shunt and series compensators, is proposed as a single solution for mitigating PQ issues. It's done the unit vector template generation (UVTG) strategy in a series active power filter (APF) to mitigate the voltage quality issues, the series APF works to restore the load voltage to its reference value and reduces the total harmonic distortion (THD) to 2.72% in the load voltage while the THD in grid voltage equal 18.06%. Comparison was made between three current control strategies in shunt APF to mitigate the current quality issues for cases of imbalance harmonic distortion in load current. The THD in the load current equal 17.3% became 2.63% in the grid current by using the direct synchronous reference frame (dq) strategy while using the indirect synchronous reference frame (dq) strategy is 2.73%. In this case, the injected harmonic distortion in grid voltage, when there is a grid voltage distortion, is regarded as the most severe case. The research results showed that the direct (dq) strategy is the most effective strategy to decrease the THD in grid current. All strategies were able to balance between the phase currents in the grid current. To improve the regulation of the DC link voltage in shunt APF for every strategy, the PI control parameter was adjusted using the Snake optimization algorithm. From the research results, we note the success of this technique in treating cases of power quality issues, is less than 5% according to the IEEE-519 standard.