Evaluation method for pantograph-catenary matching performance of spectral cross-correlation coefficient

Abstract

The invention discloses an evaluation method for the pantograph-catenary matching performance of a spectral cross-correlation coefficient, which is an evaluation method for the pantograph-catenary matching performance of a Pearson cross-correlation coefficient of a dynamic uplifting amount continuous spectrum of a contact net and a pantograph and aims to solve the lectotype problem of the high-speed railway contact net and pantograph. According to the method, the dynamic uplifting amount data of the pantograph-catenary operation is subjected to pre-processing to remove abnormal data so as to ensure data reliability; an auto-regression model method is adopted to construct the dynamic uplifting amount continuous spectrum of the contact net and the pantograph, and the uplifting spectrum is utilized to compare and analyze the causes resulting in pantograph-catenary matching performance difference; and the Pearson cross-correlation coefficient of the pantograph-catenary uplifting spectrum is calculated, and the indicators of the advantages and disadvantages of the pantograph-catenary matching performance are quantified so as to finally judge the advantages and disadvantages of the pantograph-catenary matching performance. Based on analysis, the method can visually compare the differences between different pantograph-catenary matching performance, finds out band frequency range resulting in bad matching performance, and quantitatively compares the pantograph-catenary matching performance. Therefore, the method provided by the invention is a new evaluation method for the high-speed railway pantograph-catenary lectotype.

Description

technical field [0001] The invention relates to a method for evaluating the matching performance of a high-speed railway catenary and a pantograph. Specifically, it is a pantograph-catenary matching performance evaluation method based on continuous spectrum Pearson cross-correlation coefficient of catenary and pantograph dynamic lift. Background technique [0002] The pantograph-catenary relationship is one of the three key technologies of the high-speed rail system. The pantograph-catenary matching problem has long restricted the speed-up of the high-speed rail and the safe operation of the railway. At present, there is no effective evaluation method for pantograph-catenary matching. Due to poor pantograph-catenary matching, the pantograph is severely damaged and the quality of the current is not good, causing huge economic losses and operational reliability problems. Therefore, it is urgent to find an effective pantograph-catenary matching method. The pantograph-catenary ...

AI Technical Summary

Problems solved by technology

This method can overcome the problem that a single time-domain statistical value is difficult to prove the cause of pantograph-catenary matching, and has guiding significance for the selection of pantograph-catenary matching for high-speed railways

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