Optimal Sizing of ESS in a Hybrid Wind-Diesel Power System Using NAR and NARX Model

To solve the problem of ever increasing power crisis and to employ renewable sources of power generation into the existing grid, the focus has shifted to Energy Storage System (ESS) which not only improves the voltage profile but also reduce the power system cost. However, the use of insufficient size of ESS can lead to extreme cases of power system voltage stability and may lead to voltage outages in the grid. Whereas overrated Energy Storage System may lead to poor efficiency as well as low economy. In this paper, a novel method of calculating the size of ESS and its placement on sensitive buses has been proposed based on the data of Alberta province (Canada). To solve the problem, Power-Voltage curves have been plotted to identify the sensitive buses and the size of the ESS has been calculated using NAR and NARX model. All the results have been obtained using MATLAB Simulink and IEEE 14 bus model.