Operating characteristics and fault characteristics of microgrid obviously differ with traditional power grid

it brings a challenge to microgrid protection. A technology for fast and accurate fault location and isolation of microgrid based on GOOSE communication is proposed. Dividing the microgrid into regions and choosing any node as a center

the technology completes fault location by using the direction and overcurrent information from adjacent devices with the GOOSE communication

and realizes fault isolation by communicating GOOSE tripping signals. In the paper

microgrid characteristics on operation

fault

fault location and isolation

project implementation and verification

etc

are expounded. Currently

this technology has been used in many engineering projects

which verify the correctness and feasibility of it. It can deal with the microgrid multi sources

multi structures

multiple operation modes (closed loop

open loop

grid-connected and islanded mode

etc) and the topology changes

and can solve the microgrid fault location and isolation quickly and accurately.