Intra-residential area electric vehicle charging system and method based on flexible load of demand side

Abstract

The invention discloses an intra-residential area electric vehicle charging system and method based on the flexible load of a demand side. The intra-residential area electric vehicle charging system comprises a residential area flexible load charging management system, which is connected with an application server, a database server, a front server and a register server respectively, wherein the front server is connected with a plurality of mobile terminals, and the register server is connected with a plurality of charging piles and a plurality of energy storage cabinets via a large concurrent load balance server; and the residential area flexible load charging management system is used for, at the electricity consumption trough of a residential area, pushing real-time electricity price to the mobile terminals to remind users of purchasing, acquiring electricity from a residential area grid and storing the electricity into the energy storage cabinets, and at the electricity consumption peak, reminding the users whether to preferentially charge electric vehicles with low-price electricity stored in the energy storage cabinets. The system and the method realize bidirectional interaction on the two aspects of an electric vehicle charging demand side and a grid supply side, realize flexible and dynamic load adjustment, reduce the electricity consumption cost, also guarantee the stable load of the grid, and thus have good social benefits.

Description

technical field [0001] The invention relates to the field of electric vehicle charging, in particular to an electric vehicle charging system and method in a community based on demand-side flexible loads. Background technique [0002] With the increasing popularity of electric vehicles, a large number of household electric vehicles appear on the road. The charging of this type of electric vehicles has typical time characteristics, that is, the charging time is concentrated during off-duty hours and the locations are scattered in various living quarters. Generally, household charging piles for electric vehicles are often directly connected to the power grid and participate in the centralized power grid dispatching of the power grid monitoring and dispatching system in the community. Residential communities often adopt mechanisms such as peak power prices and interruptible loads to achieve peak shaving and valley filling. After this has formed a group scale effect on electric ...

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Problems solved by technology

[0003] Chinese invention patent (application number: 2014105436267, patent name: a flexible control method for demand-side loads), although this patent also proposes a control method for flexible demand-side loads, it does not analyze the charging load of electric vehicles. Private cars, taxis, and buses are divided. Because buses and official vehicles are organized by government enterprises, they have relatively fixed charging locations, and the time is often selected during off-duty hours, which are relatively fixed and concentrated. At this time, select the application number : The flexible load control method patented in 2014105436267 is suitable. However, private cars and taxis have typical discrete characteristics, that is, the charging time is not fixed, and the charging location is not fixed. Obviously, it is only divided by region, and all loads in the power supply area are classified and analyzed , at this time, the load statistics are more difficult, and cannot fully reflect the role of flexible loads

[0004] Chinese invention patent (application number: 201610260754X, patent name: demand-side load control method and system based on flexible load), although the patent proposes a demand-side load control method for flexible loads, but the patent is aimed at all power supply from The power grid regulates the user's electrical equipment according to user type priority and other conditions, and does not involve the load scheduling method under the condition of multiple electric energy sources such as electric vehicle charging piles, especially the method provided by the patent is only a station From the perspective of the power grid, to ensure the operation of the power grid, we have not considered how to achieve the optimal charging cost from the perspective of the demand side and electric vehicle owners

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