Flexible planning method of power distribution system suitable for large-scale application of electric automobile

Abstract

The invention discloses a flexible planning method of a power distribution system suitable for large-scale application of an electric automobile. The method comprises: based on the minimum sum of investment and operation costs, establishing a power distribution system expansion planning model, and giving a charging load calculation method in a disordered and ordered charging mode; on the basis, considering various uncertain factors such as loads in the system, applying a scene analysis technology, forming a scene by three vectors such as a conventional load predictive quantity, an electric vehicle ownership quantity and a charging mode, and obtaining a solution through an effective optimization solver GUROBI, so that a flexible planning model of the power distribution system is obtained; and finally, explaining the proposed model and strategy by using an example. According to the method, an initial construction scheme with low cost can be provided for investors, the adaptability of thescheme to other possible scenes in the future is achieved, and certain risks are reduced for future investment planning of the investors.

Description

technical field [0001] The invention relates to the field of power systems, in particular to a flexible planning method for power distribution systems suitable for large-scale application of electric vehicles. Background technique [0002] In response to increasingly serious environmental problems and the enhancement of public environmental awareness, electric vehicles have gradually attracted people's attention. With the popularization of electric vehicles, the power distribution system must adopt a reasonable expansion method to adapt to the access of more electric vehicles under the premise of ensuring reliability and safety. On the one hand, the ownership of electric vehicles is affected by a series of national incentive policies and other factors, and there is a blowout growth, which makes forecasting more difficult. On the other hand, the charging behavior of electric vehicles is affected by the market and the behavior of vehicle owners on the load balance, thus chang...

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Problems solved by technology

With the large-scale access of electric vehicles, the charging behavior is accompanied by more uncertain factors. The existing literature considers the adaptability of transmission and generation system planning to future scenarios, but there is no research on the adaptation of power distribution system expansion planning to future scenarios. Discussion; and when considering the distribution network planning of electric vehicles at the current stage and the unilateral impact of the grid structure, there is no reference to the impact of future uncertain factors on the distribution system

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