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Microgrid intelligent and rapid paralleling splitting device

A microgrid, fast technology, used in circuit devices, electrical components, AC network circuits, etc.

Inactive Publication Date: 2014-01-22
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the switching between different operating modes of the micro-grid mostly relies on mechanical switches, and the switching speed is too slow to meet the seamless switching between the micro-grid and the large power grid, reducing the reliability of power supply to important loads.

Method used

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  • Microgrid intelligent and rapid paralleling splitting device
  • Microgrid intelligent and rapid paralleling splitting device
  • Microgrid intelligent and rapid paralleling splitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] The main circuit adopts an IGBT switch with fast turn-on / turn-off performance formed by two IGBTs connected in series. A current circuit breaker CB2 and CB3 are connected in series on both sides of the IGBT switch, and a bypass switch CB1 is provided for maintenance and replacement of the IGBT. Can guarantee the normal operation of the device. In addition, there is a fuse FS in the main circuit for overcurrent protection.

[0025] The signal processing unit DSP and the microgrid controller communicate with each other, and the microgrid controller sends control signals (such as relay protection signals, remote deparallel signals, remote reset signals, etc.) to the signal processing unit to control the opening of the main circuit or shut down; the signal processing unit sends the status information of the device to the microgrid controller. At the same time, the signal processing unit processes and logically analyzes and judges the output information of the sampling cond...

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Abstract

The invention relates to a microgrid intelligent and rapid paralleling splitting device which comprises an IGBT (insulated gate bipolar transistor) switch with rapid on / off performance, a circuit breaker, a fuse, a voltage detection device, a current detection device, an IGBT temperature detection device, a circuit conditioning a sampled signal, a signal processing unit for processing and logical analysis and judgment, a driving circuit generating a main circuit switch device driving signal, and an LCD (liquid crystal display) screen used for displaying output information of the signal processing unit. The device realizes seamless switching between a microgrid and a large grid; the signal processing unit can be communicated with a microgrid controller; better coordinated operation between the microgrid and the large grid can be realized conveniently; and optimal management of a system is facilitated.

Description

technical field [0001] The invention relates to an intelligent quick de-parallel device for a micro-grid. The device is mainly used at the connection between the micro-grid and a large power grid to realize the de-parallel between the micro-grid and the large power grid. Background technique [0002] 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 an autonomous system capable of self-control, protection and management. The microgrid is a beneficial supplement to the large power grid. It mainly has two operation modes: grid-connected operation (connected to the external large power grid) and isolated grid operation (isolated operation without the large power grid). When the microgrid is connected to the grid, the microgrid provides excess power to the large grid or the large grid supplements the insufficient p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J3/38H02J3/00
Inventor 陈武王广江顾伟赵波
Owner SOUTHEAST UNIV
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