Author(s)

R.J. Hill & Y. Cai

Abstract

An efficient computational technique for a DC rail traction power flow simulator incorporating track branches R.J. Hill, Y. Cai o/ EWromc oW EWricof ABSTRACT The simulation of electrical power flow in railway traction networks involves setting up and solving an electrical network model of the complete system under the operation of moving trains. To run traction simulation software on a PC, the program must incorporate facilities for minimising storage requirements and execution time. The most time consuming calculation is in successive inversion of the circuit conductance matrix, which is particularly severe in models incorporating track branches. In this paper, an algorithm is described that can manipulate a large circuit conductance matrix with economical use of computer storage and execution time. The technique exploits a special node numbering scheme, followed by modified Gaussian elimination. The use of the method is demonstrated on a simulation model of a light rail

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