**5. Simulation and Results**

A LS-PVPP of 24 MW is designed and modeled in DIgSILENT PowerFactory and has the configuration presented in Figure 19. For the current study the results for a single PV generator are presented. The main characteristics of the PV generator are summarized in Table 1. The design of this power plant was developed according to the solar irradiance and temperature data taken from Urcuqui-Ecuador in 2014. Besides, the inverter has been oversized 20% of the maximum active power capacity of the PV array. Each PV generator has a nominal power capacity of 0.6 MVA.

Two cases studies are considered: (i) testing the active power control (case study A) and (ii) testing the reactive power control (case study B). For each type of control, the PPC is the one that sends the references of active or reactive power to the local controller. For these tests, three days are chosen with different solar irradiance and an ambient temperature around 10 ◦C to 25 ◦C (Figure 20).


**Table 1.** PV panel and array characteristics.

**Figure 19.** PVPP diagram under study.

**Figure 20.** Solar irradiance data (**a**) Day 1 (**b**) Day 2, and (**c**) Day 3.
