Industrial zone type wind-photovoltaic storage and charging micro grid system

Abstract

The invention belongs to the technical field of micro grids, and discloses an industrial zone type wind-photovoltaic storage and charging micro grid system, comprising a main grid power source, a micro grid main line, a wind power generation system, a photovoltaic power generation system, an energy storage system, and a load system, wherein the main grid power source and the micro grid main line are electrically connected through a grid-connected switch, and the wind power generation system, the photovoltaic power generation system, the energy storage system, and the load system are connectedin parallel to the micro grid main line; the energy storage system comprises a lead acid battery energy storage subsystem, a lithium battery energy storage subsystem, and a super capacitor energy storage subsystem which are connected in parallel. The object of the invention is to provide an industrial zone type wind-photovoltaic storage and charging micro grid system, which can effectively improveenergy storage efficiency and reduce energy storage costs by using a lead acid battery energy storage subsystem, a lithium battery energy storage subsystem and a super capacitor energy storage subsystem, and can effectively improve the comprehensive utilization of natural energy in the zone by cooperating with various forms of power generation systems.

Description

technical field [0001] The invention relates to the technical field of micro-grids, in particular to an industrial-area wind-solar-storage-charge micro-grid system. Background technique [0002] Microgrid is now a subdivision field of power system that has been studied more. Microgrid, also translated as microgrid, refers to a small power generation and distribution system composed of distributed power sources, energy storage devices, energy conversion devices, related loads, monitoring and protection devices. It is a system that can realize self-control, protection and The management autonomous system, as a complete power system, relies on its own control and management energy supply to realize functions such as power balance control, system operation optimization, fault detection and protection, and power quality management. It can operate in parallel with the external grid or in isolation. The proposal of microgrid aims to realize the flexible and efficient application ...

AI Technical Summary

Problems solved by technology

[0009] However, one of the defects in the existing micro-grid construction process is that in the process of using grid-connected power generation or isolated grid power supply, most of them use a single power generation and energy storage system, which has low efficiency and high cost.

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