光纤复合架空地线温度场仿真计算

光纤复合架空地线(OPGW)在高压输电线路中得到了广泛应用。为了研究光纤复合架空地线在稳态、雷击等情况下的温度场变化,利用有限元软件,根据流体力学、传热学建立磁场、流体场以及温度场的多物理场耦合仿真模型,分析不同结构的光纤复合架空地线在稳态下的温度场分布,通过对比传统工程算法,来验证温度场分布的准确性。在此基础上提出利用山火对OPGW温度场的影响来实现一定范围内对山火的监控方法。最后针对雷击下的温度场分布情况及雷击高温危害进行了分析。

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

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.