Analysis of the Distribution System Considering Pv Penetration with Optimized Power Factor Control

This paper presents a Multiperiod Optimal Power Flow (MOPF) modelling applied to the power factor (𝑝𝑓𝑃𝑉) control of photovoltaic (PV) inverters. The PV inverters can operate within a 𝑝𝑓𝑃𝑉 range, injecting or absorbing reactive power which can contribute to the network performance. The optimal power factor control on the buses with PV generations contributes to an economical and safe operation, minimizing losses and improvement voltage profile of the distribution networks (DN). The MOPF was modeled aiming to minimize active power losses subject to network constraints, hourly variation of loads and PV generations. The problem solution points to a single optimal adjustment of the 𝑝𝑓𝑃𝑉 in the period considered, without the need for multiple adjustments. The algorithm was tested on 34-bus systems modified. The analysis considered the DN operating with PV generation in four different cases: 𝑝𝑓𝑃𝑉 fixed in 1, 𝑝𝑓𝑃𝑉 fixed in 0.9 capacitive, hourly variation of 𝑝𝑓𝑃𝑉 and optimized 𝑝𝑓𝑃𝑉 in a given period. The results show that single optimal adjustment of PV inverters can contribute to minimizing losses and improving the voltage profile, promoting safe operation without the need for multiple [[EQUATION]] adjustments during the operating period.