Adaptive real-time dynamic mathematic modeling method for direct-current traction power supply system in urban railway traffic

Abstract

The invention discloses an adaptive real-time dynamic mathematic modeling method for a direct-current traction power supply system in urban railway traffic. The method comprises the steps of: (1) inputting a parameter file at the t moment; (2) setting serial numbers of nodes at two ends of a traction substation and nodes at two ends of a locomotive to be continuous, and sorting the nodes at the two ends of the traction substation; judging whether the position of each locomotive at the t moment coincides with the position of the traction substation, and sorting the nodes at the two ends of the locomotive; arranging the serial numbers of the nodes from small to big according to position coordinates, and storing the serial numbers to arrays; (3) based on a node admittance network equation modeling principle, generating a node admittance network equation at the t moment by stored four node arrays and input parameters; (4) for the next (t+delta t) moment, reading the parameter file at the (t+delta t) moment to regenerate a dynamic mathematic model, wherein the steps are the same as the above steps; and repeating the steps continuously to finish real-time dynamic mathematic modeling. The method has the advantages that the true condition is better met, the self-adaptability is high, the calculation is simple and quick, and the like.

Description

technical field [0001] The invention mainly relates to the technical field of rail transit traction power supply, in particular to an adaptive real-time dynamic mathematical modeling method suitable for urban rail transit DC traction power supply system. Background technique [0002] With the rapid development of my country's national economy and the growth of urban traffic, urban rail transit, as a means of transportation with high speed, safety, reliability, punctuality, comfort, convenience, and pollution-free, has gained more and more attention in our country. Applications. [0003] Urban rail transit power supply system is an important part of urban rail transportation and the source of power for urban rail transit operations. It is responsible for the supply and transmission of electric energy, power supply for electric train traction and provide stations, sections, depots, control centers and other buildings Power required for powered lighting. The urban rail transit...

AI Technical Summary

Problems solved by technology

The main disadvantage of this method is that it cannot accurately calculate the instantaneous value of electrical parameters

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