Energy storage system and method for electric vehicle fast charging station based on source-network-load-storage collaborative service

Abstract

The invention provides an electric vehicle fast charging station energy storage system based on source-network-load-storage cooperative service and method thereof. The method comprises the steps of: collecting real-time data of devices at each monitoring point of an energy storage system; acquiring operation measurement information of a power distribution network and prediction information of a distributed power supply and a flexible load corresponding to a long-time scale, acquiring a power distribution network topological structure, real-time load data and weather information, and predictingan operation situation of the power distribution network data through data fusion and analog simulation according to the power distribution network topological structure, the real-time load data, theweather and other information; comparing the data characteristics of a source layer, a network layer, a load layer and an energy storage layer, analyzing the data and energy transfer flow between thelayers, mining the coupling relationship between the data flow and the energy flow, finally obtaining the optimal load ratio of the energy storage system of the electric vehicle fast charging station, establishing an optimal scheduling model, and solving an optimal scheduling value; by setting different scheduling targets, managing collaborative scheduling services of different hierarchies.

Description

technical field [0001] The disclosure belongs to the field of electric vehicle charging, and in particular relates to an energy storage system and a method for an electric vehicle fast charging station based on a source-network-load-storage coordinated service. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] With my country's economic transformation and industrial adjustment, the scale of electric vehicle fast charging stations continues to expand, and its demand for electricity and energy continues to rise. There are various types of power loads in the station area, and the requirements for power supply and energy supply quality are constantly improving. Combining new energy power generation with the traditional cogeneration system, based on the life cycle method, the equipment capacity and operation strategy of collaborative services a...

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Problems solved by technology

[0004] However, according to the inventor’s understanding, the large-scale application of electric vehicles brings many problems. Since the charging behavior of electric vehicles has uncertainties in time and space, when large-scale access to DC fast charging stations for electric vehicles, it will cause a lot of damage to the power grid. The impact brought by the load has a non-negligible impact on the power quality of the grid, network loss, and equipment utilization. In particular, high-power DC charging has the characteristics of large charging power and short charging time. According to the demand, the energy storage system can be configured in the fast charging station to avoid over-discharging and over-charging of the energy storage system, which will affect the battery life and performance.

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