This article proposes a quantification model for the security risks of dendriform chart-based electric power optical fiber communications networks and analyzes in detail the relationship between the risks and its essential factors: assets

threat

vulnerability and the countermeasures. In addition

it specifically explains by using a formula how these risks are constituted

elaborates on the concept classification of each factor in line with the electric power communications networks

obtains their corresponding relationship by establishing a dendriform chart model

reasonably evaluates them

thus obtaining the risk value through computations

and finally verifies the model through practical cases.