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V2G AC-DC Hybrid Microgrid Power Supply Architecture

An AC-DC hybrid, DC micro-grid technology, applied in the direction of AC-DC network circuit layout, electrical components, circuit devices, etc., can solve the difficulty of connecting charging piles and charging stations to the power grid, backward power grid construction and charging facilities construction, and charging facilities. Insufficient outlets and other problems, to achieve the effect of reducing construction and operating costs, improving grid-connection capabilities, and reducing operating costs

Active Publication Date: 2018-12-07
BEIJING BEIBIAN MICRO GRID TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, electric vehicles using V2G technology are developing rapidly, but the construction of power grids and charging facilities are seriously behind
The main manifestations are: 1. The construction of the distribution network is not synchronized, and it is difficult for charging piles and charging stations to connect to the power grid; 2. The conflict between charging piles and existing parking spaces; 3. The charging speed is slow and you need to wait in line; 4. Charging facility outlets Insufficient, especially less in remote areas

Method used

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  • V2G AC-DC Hybrid Microgrid Power Supply Architecture
  • V2G AC-DC Hybrid Microgrid Power Supply Architecture

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Embodiment Construction

[0038] see Figure 1 to Figure 2 , a typical configuration of the present invention is:

[0039] Photovoltaic + energy storage + charging facilities + DC microgrid + AC microgrid + management control system

[0040] Photovoltaic power generation: Distributed photovoltaic power generation system (photovoltaic for short) is the main distributed DC power source under the background of existing technology.

[0041] Photovoltaics can be in various forms such as photovoltaic carports and rooftop photovoltaics, and can be connected to the microgrid nearby. As a power supply device in the DC microgrid, it can be used to charge electric vehicles.

[0042] For small and medium-sized photovoltaic systems, the photovoltaic capacity should be 30kW-500kW; for large-scale systems, it should be above 500kW, or megawatt-level photovoltaic power generation.

[0043] Energy storage device: According to the existing technology or other possible technologies, a variety of energy storage devices ...

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Abstract

The invention relates to a V2G (Vehicle-to-grid) AC-DC mixed micro grid power supply system and structure, which comprise a DC micro grid and an AC micro grid wherein the DC micro grid includes DC buses, distributed type DC power supply apparatuses, DC energy storing apparatuses, DC charging piles, and changed cell DC charging and discharging apparatuses. The distributed type DC power supply apparatuses, the DC energy storing apparatuses, the DC charging piles, and the changed cell DC charging and discharging apparatuses are connected to the DC buses through their own current transformers. The AC micro grid comprises AC buses and AC power grid connection apparatuses in connection to the AC buses through their own current transformers. The AC buses are connected to the DC buses through the DC-AC current transformers in the micro grid. The AC power grid connection apparatuses are connected to a larger power grid. According to the invention, the system and structure can effectively reduce the processing work in photovoltaic inversion and charging pile rectification, lower the construction costs and operation costs, ease the pressure of a power grid by making an electric vehicle cell a mobile type energy storage apparatus, increase the stability and reliability of a power grid and cut down the operation costs for a power system.

Description

technical field [0001] The invention relates to a V2G AC / DC hybrid micro-grid power supply system structure, in particular to a power supply system structure applied to the coordinated management of electric vehicle charging and power grid. Background technique [0002] V2G (vehicle-to-electricity interconnection mode) refers to the control technology of two-way energy flow between passenger vehicles and the grid. Electric vehicles not only receive energy from the grid in one direction, but can also provide energy support to the grid when necessary, which is the strong backing of the future smart grid. , In 2015, the installed capacity of my country's power grid was 2000GW, the number of cars in the society was 160 million, and the annual increase of cars was 20 million. The power of each car was calculated according to 50KW. 20000000*50kw=1000GW, that is to say, new cars are added every year. The power is equivalent to half the installed capacity of the power grid. Big data s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J4/00
CPCH02J4/00
Inventor 杜宏孔启翔祝振鹏
Owner BEIJING BEIBIAN MICRO GRID TECH
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