Abstract: Traditional power grid dispatching alarm algorithm has low alarm instruction operation efficiency，

low power grid dispatching failure burst rate and high alarm error alarm rate，so the power grid dispatching alarm

association rules and decision tree algorithm based on knowledge graph were proposed. The association rules

algorithm was used to optimize knowledge graph grid data layer，screen grid dispatching data that does not meet the rules. The grid dispatching alarm transactions were extracted according to the characteristics of dispatching alarm instructions. The decision tree matrix was established based on knowledge graph data layer，the decision tree

correlation rule optimization algorithm was designed. The grid dispatching alarm model was constructed，the grid

dispatching fault point was determined，and the alarm of grid dispatching was realized. The experimental results

show that the alarm command operation efficiency of the grid dispatching alarm algorithm is 9.55 ×109 pieces/min，the maximum alarm false alarm rate is only 13.5%，the grid dispatching fault burst rate reaches 98.06%，and the alarm performance is high.

      Key words: knowledge graph；power grid dispatching；association rules；decision tree algorithm；alarm

transaction；characteristic quantity