The Research Of Optimal Load Under The Strong Current Sliding Electrical Contact

In pantograph catenary system, the train of current relative stability and the service life of wire and slide are directly influenced by the size of the contact load. In the paper to the independent research and development of high-performance laboratory experiment machine for sliding electrical contact experiment platform, the current relative stability coefficient of sliding contact and the wear rate of skateboarding as the research object. The machinery and test part of the testing machine is improved, the accuracy of the experimental data of the running speed, contact load, contact current and wear rate of the experimental machine is further improved. Better improved to simulate the actual contact status of the electric locomotive pantograph slide and catenary wire. This Paper through friction pair for leaching of metal carbon skateboard with copper wires to grinding experiments, the research analysis of the current relative stability coefficient and wear rate is relatively best when the corresponding optimal load. The current characteristic and the friction and wear of the skateboard and catenary wire were analyzed by in different contact load, current, sliding velocity under the condition of experiment, and through the experiment data, observe its change trend, establish with current relative stability coefficient and wear rate as the dependent variable, load, current and speed of the independent variable maths model by curve fitting, use the experimental data and obtain the model coefficient specific expressions. Analysis of the current relative stability coefficient and wear rate have conflict relationship between each other, So the application of multi-objective optimization of particle swarm optimization (pso) algorithm to solve the current relative stability coefficient and wear rate of the Pareto optimal edge solution, finally calculated signal-to-noise ratio of the multi-objective decision method to get the optimal load under the condition of the current relative stability relative best and wear rate minimum. The method of determine the optimal load for the electric locomotive running real-time adjustment provides a theoretical basis.