The power sharing curves of islanded MGs when supplying non-linear loads, star-connected three-phase unbalanced loads and connected in triangle are shown in Fig (). As shown in the figures, at the beginning, the three-phase six-pulse diode bridge rectifier of the RL load is connected until t = 2.5 s, at that time, the star-connected unbalanced load is coupled until 'at 4.5 s and an unbalanced load connected in triangle. coupled again for up to 6 s where all three different loads are connected at the same time. As can be seen, in the figure (voltage), the DG unit closer to the PCC, i.e. with less power line impedance, experienced low voltage drop and provides reactive power high at the common load, as shown in figure (Q). This is because the DG with lower power supply impedance has smaller inertia, its response time to support the load stage is smaller compared to other DG units with larger power supply impedance. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get an original essay As all DG units operate with identical droop gains, with different power supply impedance, hence the active output power of the inverters based on PI standard The controller in the voltage-current loops follows each to ensure balanced real power sharing in transient and steady state by maintaining the operating frequency within the acceptable operating limit, as shown in Figures (P) and (f). Even though all DG units have equal droop gains, there is an imbalance in the stable mode reactive power sharing caused by the mismatch of the supply impedances, as shown in Figure (Q). Therefore, there is a steady-state error in the reactive power sharing and an imbalance in the output voltage caused by an unbalanced voltage drop in the power line impedance, as shown in Figure (V). With the proposed compensation method based on virtual impedance, the output voltage of all DG units are balanced with a safe transient, as shown in Figure (V). With the suggested harmonics and voltage unbalance compensation scheme, the results shown in Figure (V) show the tracking performance of the voltage-current loop. The figure shows effective tracking of reference signals throughout a steady state, for this reason the output voltage is maintained within the operating limit of the autonomous MG in both transient and stable mode. Figure (Q) shows the reactive power sharing of three DG units. There is an adaptive configuration of operating set points as the system load changes. Thus, balanced sharing of reactive power is achieved through the designed compensation algorithm based on adaptive virtual impedance as well as PIR. Compensating voltage losses across the supply impedance ensures a balanced system voltage which results in efficient reactive power sharing since reactive power sharing is proportional to voltage. From figure x and figure Y, due to the effects of droop control, the frequency and voltage deviation are HZ and V respectively. By applying the secondary control level, the voltage amplitude and frequency have been restored to the rated operating range, as shown in Figures X1 and X2. Therefore, the output power of each inverter is increased after the process of.