Simulation Analysis of Temperature Field of Optical Fiber Composite Overhead Ground Wire

Abstract

The optical fiber composite overhead ground wire (OPGW) has been widely used in high voltage transmission lines. In order to study the temperature field variation of OPGW under the conditions of steady state and lightning strike, the finite element software is used to establish a multi-physics coupling simulation model of magnetic field, fluid field and temperature field according to the fluid mechanics and heat transfer theory. The temperature fields of OPGW with different structures are analyzed under steady state, and the accuracy of the temperature fields is verified through comparing with conventional engineering algorithms. On this basis, a method is proposed to monitor the forest fire by using the influence of forest fire on the temperature field of OPGW. Finally, an analysis is made on the temperature field distribution of OPGW under lightning strike and the high temperature hazard of lightning strike.

Keywords

• opgw
• multiphysics coupling
• forest fire
• lightning strike
• temperature field
• strong field and its effect