Scheduling of electric-thermal integrated energy system considering environmental cost

Abstract

Coordinated scheduling of electric heating comprehensive energy system is an effective measure to promote wind power consumption and solve environmental problems fundamentally. In the existing coordinated scheduling of electric heating, the optimization goal usually only considers the minimum of abandoned wind or the minimum of overall coal consumption of the system, and does not directly take pollutant emission as the optimization index. In the actual operation, the target of minimum total coal consumption or light rejection rate of abandoned air is likely to be inconsistent with the target of minimum pollutant emission. Therefore, this paper proposes a coordinated scheduling model of electric heating comprehensive energy system considering environmental cost, selects the appropriate expression form of environmental cost, unifies the economic cost and environmental cost, and takes its weighted sum value as the optimization goal, so as to achieve the lowest comprehensive economic cost and environmental cost on the basis of maximizing the consumption of wind power. Finally, the comparison between the traditional optimization model and the model proposed in this paper is carried out by the way of example simulation. The results show that the new optimization model is helpful to reduce the environmental expenditure, and the cost of considering the environmental cost is 5.2% lower than not considering the environmental cost.