ABOUT OF TRANSPORTATION WORK OF ELECTRIC LOCOMOTIVES 3VL80S ON THE HILLY - MOUNTAINОUS SECTION OF THE RAILWAY

ABSTRACT

The kinematic parameters of the movement of freight trains and the main energy indicators of the use of 3VL80^S electric locomotives in quantitative terms on the Marokand - Navoi section of "O'zbekiston temir yo'llari" JSC are substantiated in the form of tabular data and of graphical dependencies. Recommended for introduction into working practice of shop of the operation of the locomotive depot Bukhara of the Uzbek railway.

АННОТАЦИЯ

Обоснованы кинематические параметры движения грузовых поездов и основные энергетические показатели использования электровозов 3ВЛ80^С в количественном исчислении на участке Мароканд – Навои АО «Ўзбекистон темир йўллари» в виде табличных данных и графических зависимостей. Рекомендуются для внедрения в практику работы цеха эксплуатации локомотивного депо Бухара Узбекской железной дороги.

Keywords: freight train, electric locomotive, railway, parameter, station, time, speed, traction calculation, hilly - mountainous, stop, expense.

Kлючевые слова: грузовой поезд, электровоз, железная дорога, параметр, станция, время, скорость, тяговый расчёт, холмисто – горный, остановка, расход.

At the department "Locomotives and locomotive economy" of the Tashkent State Transport University, research is being carried out to substantiate the energy efficiency of using different types of traction electric rolling stock on existing and under construction railway lines and sections of "O'zbekiston temir yo'llari" JSC.

The present research, carried out in parallel with [1], is devoted to determining the kinematic parameters of the movement of freight trains and the parameters of the main indicators of the transportation work of the main (train) three-section freight electric locomotives 3VL80^S on the hilly-mountainous section of Marokand - Navoi of the Uzbek railway. Here, the driving of freight trains with a unified mass of the composition Q = 3000 t and the number of axles in the composition of m = 200 axles was carried out (organized) by the mentioned 3VL80^S electric locomotives without stops and with stops at intermediate stations, sidings and separate points.

To achieve the goal of the research, the authors used traction calculation for the nominal position of the driver controller of the studied electric locomotive in combination with idle and braking modes, based on the initial data [2] and recommendations [3-5] of the theory of locomotive traction.

The results of the traction calculation are given in table. 1 and table. 2, where the values of the kinematic parameters of the movement of freight trains along the hauls of the hilly - mountainous section of Marokand - Navoi "O'zbekiston temir yo'llari" JSC are indicated, taking into account the implementation of the maximum power of power energy systems and traction qualities of the studied 3VL80^S electric locomotives, and the kinetic energy of the train on each specific element of the profile way.

Table 1.

The travel time of a freight train for hauls per passage, intermediate stations, sidings and separate points for deceleration – acceleration

Table 2.

Distribution of the travel time of a freight train in the organization of transportation work electric locomotives 3VL80^S on the hilly-mountain section of Marokand-Navoi

Data analysis table. 1 and table. 2 shows that the movement of freight trains on a given hilly-mountainous section of the railway, organized without stops at intermediate stations, sidings and separate points in relation to similar movement with stops at them, contributes to:

• a decrease in the total travel time of the train by 11.9 minutes with an increase technical speed of movement by 7.72 km / h with an average estimated time one stop in 1.7 minutes;- значениям долей движения на режимах тяги в 22,98 процента, а холостого хода и торможения в 77,02 процента;

• increase - decrease, respectively, of the shares of movement in the modes of traction, idling and braking, by approximately 2.66 percent.

In table. 3 shows the values of the total (total) and specific consumption of electrical energy, which is spent by each mentioned 3VL80^S electric locomotive in the process of realizing the movement of only its (specific) freight train along the hauls of the hilly-mountainous section of Marokand - Navoi of the Uzbek railway.

Table 3.

Consumption of electrical energy by 3VL80^S electric locomotives during the movement of a freight train along the stretches of the hilly - mountainous section of Marokand - Navoi

The values of the total (total) and specific consumption of electrical energy, indicated in table. 3, were determined (calculated) according to the known formulas [3,4,5] taking into account the previously constructed integral curves of the speed V(S) and travel time t(S) of the train, the current I(S) for the electric locomotive under study on the above-mentioned hilly - mountainous section of the railway track.

On fig. 1 shows the diagram of the distribution of the average travel time of a freight train along the hauls of the hilly-mountainous section of Marokand-Navoi "O'zbekiston temir yo'llari" JSC. Here, the value of the average travel time of a freight train along the hauls is increased by one and a half times.

Figure 1. Distribution of the average travel time of a freight train along the stretches of the hilly - mountainous section of Marokand – Navoi

On fig. 2 shows the distribution diagram of the average total (total) and specific consumption of electrical energy by the studied 3VL80S electric locomotives along the hauls of the hilly - mountainous section of Marokand - Navoi for real conditions for organizing the movement of freight trains.

On fig. 2 the average value of the specific energy consumption of the main (train) three-section freight electric locomotives 3VL80^S has been increased twenty five times.

As a result of the research, the values of some main indicators of the transportation of main (train) three-section electric locomotives 3VL80S on the hilly and mountainous section of Marokand - Navoi "O'zbekiston temir yo'llari" JSC were obtained:

• the average estimated net travel time of a freight train over hauls and the total acceleration-deceleration time at intermediate stations, sidings and separate points, respectively, is approximately 15.3 and 2.18 minutes.
• driving freight trains with stops at intermediate stations, sidings and separate points, in comparison with similar driving without stops at the latter, provides an increase in electrical energy consumption, on average, by approximately 27.12 percent.
• the consumption of electrical energy for one stop at intermediate stations, sidings and separate points is approximately 155.3 kWh.
• specific consumption of electrical energy per stop is approximately 0.377 Wh/t km gross.
• the average value of the total (total) and specific consumption of electrical energy for each stage of the section, respectively, is 572.57 kWh and 1.387 Wh / t km gross - movement without stops at intermediate stations, sidings and separate points, as well as 727.87 kWh and 1.764 Wh/t gross km – traffic with stops at the latter.
• the average value of the average value of the total (total) and specific the consumption of electrical energy for both types of traffic on each leg of the section, respectively, is approximately 650.22 kWh and 1.576 Wh/t km gross.

Figure 2. Dynamics of the average consumption of electric energy by electric locomotives 3VL80^S along the stretches of the hilly - mountainous section of Marokand – Navoi

The kinematic parameters of the movement of a freight train, the total (full) and specific consumption of electrical energy by the main (train) three-section electric locomotives 3VL80^S on the hilly and mountainous section of Marokand - Navoi, clearly, can be quite successfully implemented by specialists of linear enterprises of the locomotive economy in the process of assessing the traction qualities of hauls track profile of real hilly-mountainous and identical virtual sections, as well as analysis of the influence of the above-mentioned parameters on improving the efficiency of using this part of the Uzbek railway, taking into account the cost of rail transportation of goods of different content and structure.

Reference:

1. Ablyalimov O. S. Study of the operation of diesel locomotives UzTE16M3 on a hilly - mountainous section of "O'zbekiston temir yo'llari" JSC [Text] / O. S. Ablyalimov // Scientific and technical journal "Bulletin of transport of the Volga region" / Samara state. University of Communications. - Samara, 2016. No. 3 (57) - P. 16 - 22.
2. Ablyalimov O. S. On the study of the efficiency of using electric traction on the Marokand - Navoi section [Text] / O. S. Ablyalimov, F. A. Salimov // Republic of Ilmiy - Amaliy Anzhumani "Ta'limning uzviyligi va uzliksizligini ta'minlash - soha taraqqiyotining muhim mezoni” / Tashkent davlat iqtisodiyot university. - Tashkent, 2015. - S. 92 - 95.
3. Ablyalimov O. S. Fundamentals of locomotive management [Text] / O. S. Ablyalimov, E. S. Ushakov // Textbook for professional colleges of railway transport. - Tashkent: "Davr", 2012. - 392 p.
4. Deev V. V. Traction of trains [Text] / V. V. Deev, G. A. Ilyin, G. S. Afonin // Textbook for universities. - M.: Transport, 1987. - 264 p.
5. Kuzmich V. D., Theory of locomotive traction [Text] / V. D Kuzmich, V. S. Rudnev, S. Ya. Frenkel // Textbook for railway transport universities. - M .: Route, 2005. - 448 p.