With the development of power grid construction

there will be more and more transmission lines across the country.However

the traditional all-steel poles and towers have some defects

such as heavy quality

rust-prone

consuming a lot of mineral energy and so on. At this stage

the composite material technology is becoming more and more mature. So

a composite tower scheme is proposed to improve the economy and reliability of towers. Firstly

the size and insulation configuration of tower head are determined according to the requirements of clearance circle and finite element electric field analysis

so as to make the electric field distribution more uniform. Secondly

based on the analysis of the performance of composite materials

the force analysis of composite tower is carried out by using ANSYS software to confirm the component size and check the bearing force under various working conditions. Finally

the cost of composite tower is calculated and compared with the traditional all-steel tower. The calculation and simulation results show that the proposed 500 k V double circuit composite towers meet the load and insulation requirements under various working conditions

and has a good economy.