The invention discloses an overhead transmission ground wire strand contact
effect analysis method and
system. The method comprises the following steps: determining a total
stiffness matrix for overall analysis of the overhead ground wire, establishing a tension
analysis method during the overall analysis of the overhead ground wire; The method comprises the following steps: determining the stresscondition under the action of
dead weight and external load, establishing a fine
stiffness matrix and an external
load vector of the strand, establishing a nonlinear contact
analysis method of the strand, determining the
contact force between the strand, establishing a nonlinear iteration
algorithm of the
contact force of the strand, determining the stress
balance equation of the whole ground wire, and analyzing and calculating the
contact force of each strand of the ground wire. The
system comprises an overhead ground wire
parameter analysis module, an overhead ground wire
stiffness matrix analysis module, an overhead ground
wire tension analysis module, a braided wire stiffness matrix and external
load analysis module, a braided wire
stress equation analysis module and a braided wire contact stress analysis module. According to the method provided by the invention, the contact stress of each strand of the overhead ground wire can be accurately and effectively analyzed, and the finerequirement of actual
engineering analysis is completely met.