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Battery echelon utilization-based distributed micro-grid system

A battery cascade and micro-grid technology, applied in photovoltaic power generation, electrical components, circuit devices, etc., can solve the problem of high cost of battery energy storage, achieve stable power quality, improve stable output, and improve power quality.

Inactive Publication Date: 2016-12-07
芜湖格利特新能源科技有限公司
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Problems solved by technology

The storage of solar energy mainly converts new energy into chemical energy, potential energy, kinetic energy, electromagnetic energy and other forms through certain technologies, so that the converted energy has the characteristics of space transfer or time transfer or quality control. The time and place are released in a suitable way; the most common energy storage method is battery energy storage, but the cost of battery energy storage is relatively high

Method used

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  • Battery echelon utilization-based distributed micro-grid system
  • Battery echelon utilization-based distributed micro-grid system

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Embodiment Construction

[0015] refer to Figure 1 to Figure 2 , Figure 1 to Figure 2 It is a structural schematic diagram of a specific embodiment of the present invention.

[0016] Such as Figure 1 to Figure 2 As shown, a distributed microgrid system based on cascade utilization of batteries includes an external power supply AC bus 10 for providing external power supply, several user photovoltaic power generation power consumption units 30, and each user photovoltaic power generation power consumption unit 30 An energy input and output monitoring unit 20 is arranged between the external power supply AC bus 10; each of the user photovoltaic power generation units 30 includes a solar panel assembly 31 for receiving sunlight irradiation for photovoltaic power generation, for The direct current distribution manager 33 for distribution and management of the direct current output by the solar panel assembly 31, the microgrid energy storage battery for converting the direct current output by the solar ...

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Abstract

The invention discloses a battery echelon utilization-based distributed micro-grid system, which comprises an external power supply AC bus, a plurality of user photovoltaic power generation and power utilization units and energy input and output monitoring units, wherein each user photovoltaic power generation and power utilization unit comprises a solar cell panel assembly, a DC distribution manager, a micro-grid energy storage battery and a photovoltaic power generation inverter; each photovoltaic power generation inverter is connected with AC electric equipment; each micro-grid energy storage battery comprises an echelon utilization power storage battery pack and a BMS controller; each echelon utilization power storage battery pack comprises single power lithium battery bodies for an electric vehicle; and the battery capacity of the single power lithium battery bodies for the electric vehicle is less than 40% of rated capacity. By the battery echelon utilization-based distributed micro-grid system, stable output of solar photovoltaic power generation can be improved; micro-grid connection with a public electric power system or other adjacent AC buses is facilitated; and the power quality of photovoltaic power generation and grid-connected power supply is improved.

Description

technical field [0001] The invention relates to the technical field of power lithium battery cascade utilization and photovoltaic microgrid system, in particular to a distributed microgrid system based on battery cascade utilization. Background technique [0002] The definition of microgrid in my country is: microgrid is based on distributed power sources, using energy storage and control devices for real-time adjustment, and realizes the power supply network of internal power balance in the network. It can be connected to the grid or run independently off the grid. Microgrid utilizes primary energy, uses micro power sources, is usually equipped with energy storage devices, and uses power electronic devices for energy regulation. It is a small system that provides electric energy according to user needs. The power supply inside the microgrid is mainly responsible for energy conversion by power electronic devices and provides necessary control; the microgrid is a single contr...

Claims

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Application Information

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IPC IPC(8): H02J5/00H02J3/32H02J3/38
CPCH02J3/32H02J3/383H02J5/00Y02E10/56Y02E70/30
Inventor 柯勇陶以彬张春玲
Owner 芜湖格利特新能源科技有限公司
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