Structural Design And Optimization Of 10kV Composite Pole

Pole is one of the most important infrastructures in power system.The reliability of its structural performance is very important for the safe operation of power grid.In the long-term operation of power grid,the problem of traditional poles has gradually emerged.The wood pole is easy to be corroded,the installation and maintenance of the cement pole is difficult,and the metal pole also has the problems of corrosion and high cost.Based on the existing problems of traditional poles,the research and design of new poles have become the research focus of researchers in recent years.In this thesis,10 k V distribution network pole as the research object,the main contents are as follows:Firstly,based on the advantages of fiber reinforced plastics(FRP)such as corrosion resistance,good insulation performance,light weight and high strength,this thesis designs a new FRP pole with E-glass fiber as reinforcement and polyurethane resin as matrix,referring to the design ideas and design conditions of traditional poles.Secondly,this thesis calculates the load of FRP pole under the four working conditions of maximum wind,maximum ice covering,conductor disconnection and installation.The finite element model of FRP pole is built by using the simulation software COMSOL and the load analysis is carried out.The displacement and stress state of pole top under various working conditions are obtained.Finally,aiming at the problem that the displacement of FRP pole top is too large under the normal operation condition,this thesis constructs the optimal mathematical model of FRP pole.In the process of solving the optimization model,intelligent algorithm is used.In order to solve the problem of complex and time-consuming calculation when using genetic algorithm alone,the back propagation network(BP network)is proposed on the traditional genetic algorithm.That is to say,the method of space uniform design is used to obtain the samples needed to construct the BP artificial network approximate model,the test set and military error are used to test the accuracy of the BP network model,and the genetic algorithm is used to optimize the BP approximate model.The MATLAB software is used to compile the corresponding program,and the result of the program operation is compared with the result of the finite element,the error is only 0.16%.Finally,the optimal displacement of FRP pole is 16.51% lower than the initial design,and the optimization target is achieved.