Assessment of Increasing PV Penetration Levels on Step Voltage Regulators Performance

This paper evaluates the impact of photovoltaic generation in voltage deviation and power reverse flow in a IEEE 34 node test feeder with step voltage regulators. Solar radiation databases are used to include the effect of intermittent generation, with the purpose to simulate fluctuations on the network voltage level throughout the solar hours. Different PV penetration and distribution cases are simulated, showing increases in step voltage regulators operations with respect to the base case. Additionally, the negative effect of PV generation is compared with the changes in the feeder's power flow, obtaining decrements on the network dependence to supply the demanded energy.