Abstract— There is an internal relationship
between the power network topology and graph
database and electrical components and their
connection lines can be stored in graph database in
the form of vertices and edges. The paper proposes
a new method based on graph database to analyse
power network outage region. The connection
between electrical equipments is abstracted into
vertexes connected by a certain edge. Firstly,
compared with traditional power flow algorithm
based on matrix calculation, the advantage of
calculation based on graph database is analyzed.
Then the paper introduces an advanced graph
product, namely GraphSQL, and its remarkable
ability to deal with power topology data.
Furthermore, according to outage analysis business,
this paper builds a graph model to search potential
components which are influenced by power off
nodes and its analysis process is also be showed.
Finally, based on a group of topology data of an
actual distribution network, query result of graph
model is presented, and its short query time also
meets pratical requirement.
Index Terms—graph database, GraphSQL,
network topology, outage