Unlock instant, AI-driven research and patent intelligence for your innovation.

Microgrid overcurrent protection device

An over-current protection, micro-grid technology, applied in protection against over-current, emergency protection circuit device for limiting over-current/over-voltage, emergency protection circuit device, etc., can solve problems such as different protection means

Active Publication Date: 2019-11-01
SCHNEIDER ELECTRIC IND SAS
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

and therefore, require different means of protection

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Microgrid overcurrent protection device
  • Microgrid overcurrent protection device
  • Microgrid overcurrent protection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] refer to figure 2 , shows a single-line diagram of a microgrid with two distributed resources, a photovoltaic (photovolaic, PV) panel 20 and a local generator 21 . The PV panels 20 are connected to bus bars 23 via inverters 22 and circuit breakers to provide a suitable AC signal. The generator 21 is connected to the bus bar 23 via a circuit breaker and provides an AC signal by design. The bus bar 23 is connected to a voltage measuring transducer 24 which in turn is associated with a logical node 25 . Power may be delivered to the load via a feeder supply 26 . The feeder 26 includes a circuit breaker 27 and a current transformer 28, which are associated and controlled via logical nodes 29 and 30, respectively.

[0033] exist figure 2 In the one-line diagram of , bus bar 23 is a simplified representation of a three-phase circuit. The same applies to the one-line diagrams shown in the other figures. The three wires of a three-phase circuit are commonly referred to ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a microgrid overcurrent protection device and a method for overcurrent protection of a microgrid. The protection device including a voltage controlled overcurrent detector fordetecting an overcurrent above an overcurrent threshold and a phase directional detector arranged for current direction in a downstream or an upstream direction.The overcurrent threshold of the voltage controlled overcurrent detector is set at an upper overcurrent threshold when a measured voltage Vm is above a threshold voltage Vs and set at a lower overcurrent threshold when the measured voltage Vm is below the threshold voltage Vs. The device further includes a timer arranged for generating a trigger signal with a first delay time period when a downstream current direction and an overcurrent are detected and with a second delay time period when an upstream current direction and an overcurrent are detected.

Description

technical field [0001] The invention relates to a device for protecting a microgrid from overcurrent, and a method of configuring such a system. More specifically, the present invention relates to an apparatus for detecting a fault condition that may result in an overcurrent condition. Background technique [0002] A microgrid is generally a localized grid intended to generate and distribute electricity in an area that is isolated and remote from large electrical energy generating stations, such as, for example, islands, mountainous or desert areas. Microgrid principles are also applicable when it is desired that a building, community, campus, or other entity connected to a widely distributed grid manage its energy production differently and, for example, improve its resilience. [0003] A microgrid can consist of various energy sources that are spatially distributed and disconnected from the main grid, namely the utility grid (also known as distributed energy resources DER...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/28H02H1/00
CPCH02H7/28H02H1/0092H02H1/0007H02H3/08H02J13/00034H02J13/0004Y02E60/00H02J13/00002Y04S10/30H02H7/22H02H9/02
Inventor P.阿利伯特
Owner SCHNEIDER ELECTRIC IND SAS