Intelligent Low Voltage Regulator for Solving PV Overvoltages Problems in Power Distribution Systems

Abstract

The connection of photovoltaic systems on weak electrical distribution networks can lead to unsatisfactory operating conditions for renewable energy producers due to the occurrence of overvoltages or undervoltages. In such critical situations, where electrical parameters are outside standard regulatory levels, the intervention of electrical protections can cause damage to power generation. For this purpose, the paper presents the application of an intelligent voltage regulator capable of solving voltage regulation problems in low-voltage networks. A real case study shows the results of the application of the device in electrical distribution networks with a high penetration of photovoltaic type renewable source plants. The results show the effectiveness of its application in terms of both technical and economic aspects related to the use of the proposed voltage regulator and its comparison with traditional strategies of planning expansion, highlighting the benefits for the distributor and the owners of photovoltaic plants.