外文翻譯---預(yù)測鐵路供電系統(tǒng)工作模式的方法和工具

1、1Railway Condition Monitoring,2006. The Institution of Engineering and Technology International Conference on 29-30 Nov.2006 Page(s):63-66 IEE CNFMETHODS AND TOOLS FOR PREDICTING WORKING MODES OF RAILROAD POWER-

2、SUPPLY SYSTEMSZaytseva, L.A.; Zaytsev, V.V.Rostov State University of Transport Communications, Lenin Street, 44/6, Apt. 23, 344038 Rostov-on-Don, Russia tvadim@cs.vu.nl, fax: +31(20)5987653Keywords: power supply, elect

3、rification, breakdown mode, modelling.AbstractThis research is dedicated to design and implementation of a computer application for predicting the functioning of a railway power supply system (both on developing stage an

4、d in operational state). The process of creating a model for simulation of train movements is described in detail. Two working modes are considered in required hardware reliability estimation: a normal mode (standard con

5、ditions) and a breakdown mode (when one of the substations is down). Model analysis and implementation of the results obtained show their trustworthiness. While exploring model behaviour, we could determine minimum time

6、interval between trains, estimate maximum possible current, voltage losses, as well as other parameters.1 IntroductionDuring the last decade railway electrification was a hot topic in Russia. A lot of attention has been

7、 paid to economic efficiency of the solutions proposed for newly electrified zones. Total cost of ownership should be as 3always has higher currents and voltage losses. Therefore, it may pose certain limitations on train

8、s' admission.For a double track railway section and two-side feed it is common to make an additional connection of traction networks of two tracks by means of a so-called sectioning post (Figure 1). The sectioning po

9、st allows to make currents in these two traction networks equal. This decreases voltage and power losses; thus, the sectioning post should normally be operational.Figure 1: Primary feeding scheme for a double track secti

10、on.Figure 2: Separate feeding of two tracks.When a sectioning post goes down (or is switched off), the scheme looks more like Figure 2 and is called the separate feeding scheme.We have seen two possible feeding schemes i

11、n normal mode. By “normal mode“ we mean any situation where all railway stations remain operational (as opposed to “breakdown mode“, when one of them is down).2 ModellingThe problem solution consists of following issues