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High-reliability intelligent microgrid system

An intelligent micro-grid and reliability technology, applied in the field of electric energy, can solve problems such as the influence of power battery life, and achieve the effect of simplifying energy control strategy, smooth power interaction, high stability and reliability

Inactive Publication Date: 2019-11-19
SHENZHEN AUTO ELECTRIC POWER PLANT +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the needs of the system operation, the battery is constantly charged and discharged and the power is constantly changing, and such working conditions have a serious impact on the life of the power battery

Method used

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] refer to figure 1 , figure 1 A logic block diagram of the highly reliable intelligent micro-grid system provided by the present invention.

[0039] Such as figure 1 As shown, the highly reliable smart microgrid system includes: a first switch 11 , an AC bus 13 , a bridge circuit 12 , a DC bus 14 , new energy generating equipment 15 , and a control unit connected to the first switch 11 .

[0040] The first switch 11 ( figure 2 Indicated as S1) to co...

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Abstract

The invention relates to a high-reliability intelligent microgrid system. The high-reliability intelligent microgrid system comprises a first switch, an alternating-current bus-bar, a bridge type circuit, a direct-current bus-bar, a new energy power generation device and a control unit; the first switch is connected with an external power grid, can be switched on or switched off according to switch control signals outputted by the control unit so as to enable the intelligent microgrid system to enter a grid-connected mode or an off-grid mode; the alternating-current bus-bar is connected with the first switch; the bridge circuit is connected with the alternating-current bus-bar and the direct-current bus-bar; the new energy power generation device is connected with the direct-current bus-bar; the bridge circuit comprises a first energy branch circuit and a second energy branch circuit, wherein the first energy branch circuit and the second energy branch circuit are respectively connected with the alternating-current bus-bar and the direct-current bus-bar; and the first energy branch circuit and the second energy branch circuit are of an parallel connection, so that when any branch circuit is abnormal, the other branch circuit is used as the backup of the abnormal branch circuit. With the high-reliability intelligent microgrid system of the invention adopted, the problem of the bottleneck of a micro-grid can be solved; stable power interaction is presented for a grid-connected port; and emergency power supply requirements are met. The intelligent microgrid system has high stability and reliability.

Description

technical field [0001] The invention relates to the technical field of electric energy, and more specifically, relates to a high-reliability intelligent micro-grid system. Background technique [0002] The smart microgrid system (hereinafter referred to as the microgrid system) can be connected to the external grid and run in the grid-connected mode, or it can be disconnected from the external grid and run in the off-grid (island) mode. The microgrid system in the grid-connected mode has the functions of peak shaving and valley filling, frequency modulation, stabilizing the grid, and providing electric energy, which can improve the quality of the grid, improve the stability of the grid and the ability to recover from faults; the microgrid system in the off-grid mode has emergency power supply It can guarantee the power supply of important loads, and has access to new energy power generation equipment, which can supplement the power of the system. Currently operating micro-g...

Claims

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Application Information

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IPC IPC(8): H02J3/38H02J3/32H02J7/34H02J9/06
CPCH02J3/32H02J3/381H02J7/34H02J9/061
Inventor 靳权万新航
Owner SHENZHEN AUTO ELECTRIC POWER PLANT
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