Research And Development Of A High-voltage Disconnector Test Platform For Several Key Parts Dedicated To Metal Supervision

With the rapid development of economics,the need of electrical energy is growing.Meanwhile,higher requirements were proposed on the operation of Electric Networks.In recent years,equipment failure and accident often happen.As a result,State Grid Corporation of China put forward requirements on diminishing the device cost and strengthening the supervision of metal.Combining with the background of the project of the company,this paper focuses on the development of a 110 KV High-voltage Disconnector Test Platform for Several Key Parts,such as the transmission rods,the contacts and so forth.By means of theoretical analysis and computation,the functions of motion and environment simulation,data tests and records are tested.So the platform can provide a technical support on manufacture,installation and acceptance inspection of High-voltage Disconnector.The main research works of the paper are as follows.The platform is capable of carrying out srveral experiments,including motion and environment simulation of Transmission Rods and Disconnector contacts.Chapter 1:Combining with the common failure types of the Disconnector,the background and significance of the thesis are given.Then,the basic failure analysis is conducted.Finally,the current situation of the researches on Disconnector by establishing a platform all over the world is introduced.Chapter 2:The platform needs to have the ability of motion simulation,environment simulation and so on.Based on those requirements,the overall mechanical structure of the platform is designed.Then,different modules of the platform are separately given.including the transmission mechanism,the power-driven mechanism,the brake-loading mechanism,the salt spray test mechanism and the foundation platform.Chapter 3:Based on the mechanical design,the control system of the platform is carried out.This chapter can be divided into two parts,including the hardware system design and the control software design.The former one contains force testing module,the servo control module,the brake-loading module and the data acquisition module.The latter one is implemented with the LabVIEW software.Chapter 4:In this part,several functions related experiments are given.Firstly,the mechanical characteristics of the transmission rods were tested.Afterwards,a few experiment of program control loading was carried out,and the theoretical analysis was verified.Moreover,the transmission rods with different surface treatment were experimentally tested.At last,the mechanical wear test of the disconnector contacts were performed using the platform.Chapter 5:A brief conclusion of the paper is given and the prospects are also outlined.