Group charging system and power distribution method and device thereof

Abstract

The invention relates to a group charging system and a power distribution method and device thereof, and belongs to the technical field of electric vehicle charging facilities. The method comprises the steps of judging whether a power grid is in a power consumption peak period or not; when the power grid is in the power consumption peak period, calculating the total required power of the group charging system, and taking the smaller value between the total required power and the available power allocated to the group charging system by the power grid as the allocable total power allocation amount of the group charging system, wherein the charging power allocated to each charging terminal with the charging requirement in the group charging system is the product of the required charging power of the charging terminal, the required proportionality coefficient corresponding to the charging terminal and the cluster proportionality coefficient. According to the method, no matter how large the electric vehicle needing to be charged reaches in the power consumption peak period, huge charging power cannot be formed, impact cannot be brought to the power grid, safe and stable operation of the power grid can be guaranteed, and the charging requirement of the charging terminal can also be met.

Description

technical field [0001] The invention relates to a group charging system and its power distribution method and device, belonging to the technical field of electric vehicle charging facilities. Background technique [0002] Most of the existing charging facilities are connected to the power grid one by one. This arrangement of charging piles will make the charging of electric vehicles disorderly. When the electric vehicles that need to be charged reach a certain scale, it will form a huge The charging power will cause an impact load, which will bring a huge impact to the power grid, causing the frequency and voltage of the power grid to fluctuate, thereby affecting the stability of the power grid. Contents of the invention [0003] The purpose of the present invention is to provide a group charging system power distribution method to solve the problem that large-scale charging piles may cause impact loads when charging electric vehicles, thereby affecting the stability of th...

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Problems solved by technology

[0003] The purpose of the present invention is to provide a group charging system power distribution method to solve the problem that large-scale charging piles may cause impact loads when charging electric vehicles, thereby affecting the stability of the power grid; at the same time, it also provides a group charging system The power distribution device is used to solve the problem that large-scale charging piles may cause impact loads when charging electric vehicles, thereby affecting the stability of the power grid; at the same time, it also provides a group charging system to solve the problem of large-scale charging piles charging electric vehicles. When charging an electric vehicle, it may cause an impact load, which will affect the stability of the power grid

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