Capacity-optimizing method of isolated micro-electrical network containing wind-solar electricity-generating and electric-automobile electricity-transforming station

Abstract

The invention discloses a capacity-optimizing method of an isolated micro-electrical network containing a wind-solar electricity-generating and electric-automobile electricity-transforming station in the technical field for the optimization of an electric-power system. The invention adopts the technical scheme that the method comprises the following steps of: firstly selecting a reasonable system structure, establishing the model of each part in an integrated system, then establishing an objective function by using the minimum total cost as an object, determining corresponding constraint conditions, and finally solving through an intelligent optimization algorithm to obtain the optimal capacity configuration of the system. In an optimized capacity-calculating method disclosed by the invention, the electricity-consuming requirement of an electric automobile and the possessed energy-storing capability of an electricity-transforming mode are considered, and the constraint conditions of a charging-discharging machine and a power battery are added; iterative solution is carried out through the intelligent optimization algorithm, the thought is clear and rigorous, the method is reasonable and reliable, and the problem of optimized capacity configuration of the isolated micro-electrical network containing the wind-solar supplementary electricity-generating and electric-automobile electricity-transforming station can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of power system optimization, and in particular relates to a method for optimizing the capacity of an isolated micro-grid including wind power generation and electric vehicle swapping stations. Background technique [0002] Wind-solar hybrid power supply system is an important application form of renewable energy power supply system, which has been extensively researched and demonstrated. Although wind and solar primary energy are naturally complementary in time and season, due to their inherent characteristics of time-varying, intermittent, and unpredictable, energy storage systems are still required to ensure the reliability of power supply. On the other hand, the development of electric vehicles has been generally established by countries all over the world as an important way to ensure energy security and transition to a low-carbon economy. According to the primary energy structure, the carbon emission ...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the current isolated microgrid has no reasonable capacity ratio under the premise of considering charging demand, load level, wind and solar power generation capacity, etc., this invention proposes a capacity optimization method for isolated microgrid including wind power generation and electric vehicle swap station

Images