Coordinated planning method for power distribution system and electromobile charging network

Abstract

The invention discloses a coordinated planning method for a power distribution system and an electromobile charging network. The coordinated planning method comprises the following steps that first, a planning strategy of distributed charging piles based on node charging demands is put forward, and then a multi-objective optimization model of coordinated planning of the power distribution system and the electromobile charging network is established, wherein the objective of the model is that the sum of the investment cost and the system network loss is minimal, and the traffic flow intercepted and captured by quick charging stations is maximal. In the developed model, a traffic flow allocation model based on user balance is introduced to analyze the traffic flow intercepted and captured by the quick charging stations, and the number of devices of all the quick charging stations is allocated by the correlation theory of the queueing theory according to the rule that the average charging waiting time of vehicle owners is not beyond a certain threshold value at traffic rush hours. According to the method, a series of Pareto nondominated solutions can be obtained, planning personnel or investors can balance all the nondominated solutions according to practical engineering and select the most reasonable scheme, and therefore the investment efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle charging station planning, and determines candidate sites and scales of fast charging stations based on relevant theories such as traffic network distribution analysis, queuing theory, and multi-objective optimization. Background technique [0002] The widespread access of electric vehicles poses new challenges to power distribution system planning. Deploying the electric vehicle charging network first, and then upgrading the power distribution system is a commonly used two-stage planning method, but this method often cannot effectively achieve the optimal allocation of resources. In this way, how to coordinate the planning of power distribution system and electric vehicle charging network is an important issue worthy of study. In the above background, the present invention first proposes a planning strategy for distributed charging piles based on node charging requirements, and then aim...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is the coordinated planning of the power distribution system and the electric vehicle charging network considering factors such as urban traffic network distribution analysis, electric vehicle user travel convenience, etc.

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