外文翻譯---預(yù)測鐵路供電系統(tǒng)工作模式的方法和工具-展示頁
2025-05-27 08:31本頁面
【正文】 inter substation zone and to increase time intervals between trains. With a model which takes the section profile into account, it is possible to research breakdown modes for every single substation. The model calculates voltage levels in traction work and currents along the whole length of it. It is also possible to change train speed and time intervals between trains ? . During simulations, the model counts the voltage on each of the electric lootives and chooses the minimum. The minimum value is then pared to the allowed absolute minimumif the voltage is too low, the time interval is increased by one minute: 11 ???? ?ii (1) Then the model starts the simulation over. This stepwise optimisation of time intervals between trains yields in the time interval which is minimal acceptable for a fixed train speed. Another oute is an array of currents on all elements of inter 10 substation zone (with an accuracy of 3 km). These currents can be used to calculate electromagic influence on adjacent munication lines. Model algorithm The model runs in an Intemet browser. All data available from the railway experts about the section profile is already incorporated in it, as are the abovementioned formulae and methods. First, the user chooses the inter substation zone from a predefined list of zones on which the data is available to the application. This choice determines all train currents and positions of intermediate stations. Then, it is possible to provide additional input data: fix the train speed, choose the number of trains in a pack, minimum time interval between trains, traction work type, its resistance, displacement interval, etc. Data is checked for validity, and the simulation process starts. visualising every step. Every minute a moment scheme is calculated: the current of each substation and the voltage on each lootive are determined, saved and pared to the allowed bounds. When the last train leaves the inter substation zone and there are no more trains waiting to be let in. the simulation stops. All simulation outes such as maximum voltage loss, maximum current and the time interval between trains that meets all the conditions are displayed. This is how the model works for the simplest possible configuration. We have dealt with more plex real life situations, for example, they can bine double track and single track zones, they can have more than two different types of trains, etc. 3 Conclusion It has been shown why and when it is necessary to predict different functioning modes of a railway power supply system. Predicting normal working mode is needed when designing a system (when electrifying new 11 railway section). Predicting breakdown mode is needed for train traffic management on the fly in the case of a nonworking railway substation. The principles of creating the model with taking the section profile into account were substantiated. A working puter application that allows for checking railway power supply system reliability was implemented. The results of the research were used in several big electrification projects. The program itself is still being used for educational purposes in Rostov State University of Transport Communications. 12 鐵路環(huán)境監(jiān)測， 2020 11月 29日－ 30日 頁碼： 63－ 66 電機(jī)工程師協(xié)會 會議記錄 預(yù)測鐵路供電系統(tǒng)工作模式的方法和工具 Zaytseva, .。 admission. For a double track railway section and twoside feed it is mon to make an additional connection of traction works of two tracks by means of a socalled sectioning post (Figure 1). The sectioning post allows to make currents in these two traction works equal. This decreases voltage and power losses。 1 Railway Condition Monitoring,2020. The Institution of Engineering and Technology International Conference on 2930 Page(s):6366 IEE CNF METHODS AND TOOLS FOR PREDICTING WORKING MODES OF RAILROAD POWERSUPPLY SYSTEMS Zaytseva, .。 Zaytsev, . Rostov State University of Transport Communications, Lenin Street, 44/6,
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