Electric-energy scheduling method for power grid system integrated into energy storage equipment

Abstract

The invention discloses an electric-energy scheduling method for a power grid system integrated into energy storage equipment. The electric-energy scheduling method comprises the following steps: (1) a profit function model of a power plant is established, and the profit of the power plant is equal to the solution of subtracting power generation cost from the electric charge from users; (2) the energy storage equipment is introduced into the power plant, stores electric energy when the power consumption is in a valley period and releases the electric energy when the power consumption is in a peak period, so that the power plant not only can generate power smoothly, but also can ensure the power demand of the users when the power consumption is in a peak period; (3) a utility function model of a user group is established and is equal to a result of subtracting the cost paid by power consumption (i.e., the electric charge needing to be paid) from the power-consumption satisfaction degree obtained by power consumption of the user group, while the electric charge needing to be paid by the users not only is related to the power consumption, but also is related to the fluctuation level of the total load; (4) a double-layer optimization algorithm is established, the power plant side adjusts and controls a load curve according to the response of the power demand of the user group, so that the profit of the power plant is maximized; the user group plans the power consumption plan of the users according to a power-consumption cost function provided by the power plant, so that the maximization of the whole happiness (i.e., subtract the paid electric charge from the power-consumption satisfaction degree) is achieved.

Description

technical field [0001] The invention relates to the field of smart grids, in particular to an electric energy demand side management control method applied to a smart grid system integrated with energy storage equipment. Background technique [0002] Since the beginning of the 21st century, the use of information technology to completely transform the existing energy utilization system and maximize the energy efficiency of the power grid system has become the focus of attention of all countries. Therefore, the concept of flexible, clean, safe, economical and friendly smart grid has emerged as the times require, and has become a hot research and discussion topic in the global power industry in recent years. At present, there is no unified definition of smart grid, but the consensus based on smart grid is that smart grid can optimize the power consumption of users during peak load periods, and can realize the "plug and play" grid-connected operation mode of distributed power s...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of great resource shortage and waste of resources caused by the inevitable occurrence of power consumption peaks and valleys in power demand, the present invention proposes a novel power demand side control method. Information exchange among them, using a new double-layer algorithm to calculate the optimal power generation and energy storage of the power plant and the optimal power consumption plan of the user; in addition, the present invention introduces energy storage equipment to charge and Discharging during the peak of power consumption can well solve the problem of low utilization rate of power plant equipment during the low power consumption of the power plant and the shortage of power supply during the peak of power consumption

Images