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A busbar protection method applied in complex wiring of microgrid

A busbar protection and micro-grid technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve problems such as the complexity of micro-grids

Inactive Publication Date: 2018-08-17
XUCHANG XJ SOFTWARE TECH +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a busbar protection method suitable for complex wiring in micro-grids to solve the problem that the existing protection is too complicated to be directly applied to micro-grids

Method used

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  • A busbar protection method applied in complex wiring of microgrid
  • A busbar protection method applied in complex wiring of microgrid
  • A busbar protection method applied in complex wiring of microgrid

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Embodiment Construction

[0016] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0017] exist figure 1 Among them, K1~K12 components are connected into a microgrid system, and the bus bar is the key equipment for energy collection and exchange. Firstly, a distinction is made between ordinary connecting elements and segmented switching elements. K1, K2, K3, K5, K6, K9, K10, K11 and K12 components are respectively connected to the micro power supply, load or energy storage system, and are regarded as common connection components; The two segments I and III of the busbar are bridged, and K8 is bridged by the segments II and III of the two busbars, so K4, K7 and K8 are regarded as subsection switching elements.

[0018] With K4, K7 and K8 as the boundaries, the busbar of the microgrid is divided into three parts. Consists of K1, K2, K3, K4 and K7 components to form the protection of section I of the busbar; components of K4, K5, K6 and K8 ...

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Abstract

The invention relates to a bus protection method applied to a complicated connection of a micro-grid. According to the method, with a section switch as a boundary, a bus with a fixed connection element in the complicated connection of the micro-grid is divided into different subsections; each subsection is provided with an independent bus protection; each subsection finishes the bus protection by an independent logic CPU (also called a logic module); and multiple sections of bus protections (multiple independent logic CPUs) form a complicated bus protectionwith no blind area. The multiple independent logic CPUs achieve information interaction in a data bus manner or a point-to-point data pipeline manner; and mutual starting and locking functions areachieved.

Description

technical field [0001] The invention relates to a method for constructing a busbar protection applicable to a microgrid, and belongs to the technical field of power system protection. Background technique [0002] In order to solve the adverse effects of a large number of distributed power grids on the large power grid, the micro grid technology has been produced. A microgrid is a system composed of micro power sources (such as photovoltaic power generation, wind power generation, fuel cells, etc.), loads, energy storage systems, and control devices. Due to different purposes and application environments, the main wiring methods of the microgrid are flexible and diverse. Generally, micro power sources, loads, and energy storage devices are all connected to busbars to achieve balanced energy transfer. Since the busbar is the key equipment for energy collection and exchange in the microgrid system, the busbar must be equipped with a complete and efficient relay protection de...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02H7/22
Inventor 张鹏远胡叶宾周芝萍吴和平刘浩刘立功樊鹏孙航飞陈斌张秀娟段太钢高建琨杨坤李燕熊焰
Owner XUCHANG XJ SOFTWARE TECH