Optimal demand response program design using a three phase optimization algorithm in electric vehicle charge/discharge application

In this paper the effects of disturbuted generation resources and demand response program on the placement of charging or discharging station are investigateted. The effectiveness of an optimal exploitation approach is evaluated. pivotal factors of optimal charge/discharge power in stations are a combination of technical and economic parameters. The technical parameters contains minimization of network losses, voltage loss reduction in feeders, smoothing network load curve and harmonic elimintion. The placement of stations and charge/discharge power were considered the most effective economic parameters. In other words, the minimization of charge/discharge operations results cost reduction in purchasing power. A price-based demand-response program is considered to manage loads on the customer side and smooth the load curve. meta-heuristic optimization algorithms such as genetic algorithm (GA), particle swarm optimization (PSO), and imperialist are considered to find an optimal solution. This study is simulated on an IEEE standard 69-bus network. By using a conventional hybrid algorithm it is shown that the problem of station replacement and charge/discharge program can be solved optimally. Moreover, the effects of an increase in the number of stations and a disturbance in charge/discharge capacity are examined.