Two-stage power distribution system and method for electric automobiles in public transformer residential quarter

Abstract

The invention discloses a two-stage power distribution system and method for electric automobiles in a public transformer residential quarter. The system comprises a plurality of charging piles with adjustable power. Each charging pile is connected with a controller through a communication channel. Charging information of the electric automobiles in the public transformer residential quarter and the current load of the residential quarter are read through the controller. Under the situation that the total amount of electricity distribution power of the public transformer residential quarter is not increased, a charging power distribution scheme capable of dynamically adapting to the residential quarter load is made for electric automobile groups in the residential quarter by utilizing available charging power constantly changing with time, so that the different charging requirements of electric automobile users are met. The scheme can take the benefits of all the users into account, not only is fairness embodied, but also efficiency is focused; meanwhile an electricity distribution network of the public transformer residential quarter and electric automobile battery systems are protected to enable the loads of the electricity distribution network and the electric automobile battery systems to be maintained within the safe level. The method is easy to carry out, adding of facilities is not needed, superior master station scheduling is not needed, economy and high efficiency are achieved, and the two-stage power distribution system and method has good application value under the time background that the electric automobiles are popularized continuously.

Description

technical field [0001] The invention belongs to the field of electric vehicle charging, and relates to a control method for an electric vehicle charging system in a residential area. Background technique [0002] Today, as a clean new energy vehicle, electric vehicles are receiving more and more attention and response. As the number of electric vehicles in the public transformation community continues to increase, problems also follow. Due to the lack of necessary control means for the power system of the public transformation community, when the peak period of electricity consumption arrives, when many electric vehicles in the community are charging at the same time, it is very easy. This will lead to overloading of the community's electricity consumption, threatening the security and stability of the community's electricity consumption. If the capacity of power equipment in the community is specially increased to cope with peak power consumption, it will increase the cost...

AI Technical Summary

Problems solved by technology

However, as the scale of electric vehicles continues to increase, the total available power of the distribution network in the community will inevitably exceed the supply. If the disorderly charging method is still adopted without regulation, it will inevitably lead to long waiting times for users and power distribution in the community during peak power consumption periods. Problems such as network overload

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