Coordinated scheduling of electricity and natural gas networks considering the impacts of ptg units on handling electric vehicles’ uncertainties

Gas fueled power stations are considerably effective in power system operation during peak hours due to their high up and down ramping rates. By increasingly penetration of gas fueled power stations in power systems and development of new technologies such as power-to-gas (ptg) units, coordinated scheduling of both electricity and natural gas (NG) networks has attracted researchers’ attention of both systems. The NG volume generated by ptg units are stored in storages to directly supply the NG demands, or to sell in NG markets. If necessary, the stored NG volumes are converted into electricity, again; this method is a suitable replacement for batteries and storages in electricity network in long-term. In this paper, a mixed integer linear programming (MILP) model is proposed for coordinated scheduling of electricity and NG networks considering ptg units. A test network integrating modified 24-bus IEEE electricity network and Belgium gas network including nine power stations (three of them are gas fueled), three vehicle to grid (v2g) stations, and three ptg stations is studied to evaluate the effectiveness of the proposed model. Results of simulations demonstrate the effectiveness of ptg units in handling the uncertainties of v2g stations charging and discharging.