Abstract: The dynamic and static increasing capacity of 110kV lines Qing san A and Qing san B was calculated and analyzed from the two angles of theory and practice. The result demonstrated that the lines are able to increase their capacity dynamically and statically. This provided new thought for scientific utility of line resource, and provided reference for theoretical calculation and practical analysis of dynamic and static increasing capacity of power transmission line.

Key words: 110kV line, heat quota, dynamic and static increasing capacity, theoretical analysis