Análise da viabilidade econômica de um sistema de gerenciamento de carga para consumidores residenciais de baixa tensão

Abstract

The purpose of this work is to analyze the economic feasibility of adhering to the White Tariff and the insertion of Distributed Generation (DC) photovoltaic systems with energy storage for low voltage (LV) residential consumers. The consumers can be served by the energy network of the local concessionaire or by GD. For this, it is necessary to use a device called "intelligent circuit breaker", which has the purpose of determining the power supply of the residential circuit. The White Tariff is composed of 3 tariff stations (peak, off-peak and intermediate), so that there are savings for the consumer, at peak and intermediate times, the power supply to the residence will be from a photovoltaic system. With the new tariff system established by the National Electrical Energy Agency (ANEEL), the electrical power system can reduce its load curve at peak times and the consumer can reduce his electricity bill, without changing his consumption habits. Thus, through case studies, it was concluded that for consumers of 50 to 100 kWh and 201 to 400 kWh, the proposed system proved viable, since the time for return on investment was short, the Net Present Value had positive values and the Internal Rate of Return had a percentage above the Minimum Rate of Attractiveness. For consumers below 50 kWh and 101 to 200 kWh, it proved unfeasible.