Reducing Power Peaks in Railway Traffic Flow Subject to Random Effects

The article discusses one of the sensors that is widely used to determine the location of a train with an axle counting system, namely the axle counter, since various types of sensors, such as track circuits, eurobalises, etc., are widely used in railway automation at stages and stations. The study consists in identifying the failure of the railway car counting axle under the influence of disturbing factors, namely the influence of weather conditions, terrain, the influence of rail magnetization, which leads to a malfunction of the axle counting system. The research method was to determine the failure in the calculation of the axles of the train, when, for unknown reasons, false information was shown, it turned out that when switching from diesel traction to electric rail, it is a grounding circuit, and the electrochemical effect also manifests itself, which leads to the accumulation of electrical energy. The research method consists in determining these factors; for this, algorithmic expressions were developed and the principle of operation of the axle counter was investigated. As a result, it was found that with electric traction, rail magnetization and magnetization between rail tracks, an accumulator effect, occur. The influence of the disturbing factor is calculated and shown by the distance to the sensitive element of the control sensor, the magnitude of the electromagnetic field intensity modulus, which affects the operation of the axle count sensor. In conclusion, protection methods based on adaptive protection methods are proposed.

Section: Methodsmentioning

confidence: 99%

Algorithm, mathematical models and analysis of axle counting systems

Aliev,

Tokhirov

2023

“…For the reception and departure of a mixed route from the station, the station attendant agrees to send the train from the station. In case of malfunction and abnormal situation of the route, according to the rules of technical operation, stopping point of the route must be at exit traffic light of station and also at input traffic light [13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Algorithm and software tools for optimizing the preparation of routes on high-speed lines based on RFID technology

Aliev,

Tokhirov

2023

On railways of the Republic of Uzbekistan, on hauls "Dashtabad - Zarbdar" and "Dashtabad - Bayaut" on section Tashkent - Samarkand and Navoi - Bukhara - 1, on section Samarkand – Bukhara organized high-speed train traffic, where hauls with a SAB microprocessor system were modernized on basis of axle counting system, produced by "Promelectronica". For the preparation of routes when departing or receiving at station, especially on high-speed sections, preparation is carried out with a large investment of time, which, in turn, interrupts the technological work carried out at the station. Offered with microprocessor semi-automatic lock on the axle counts, apply for establish routes RFID points, because maintenance and economic component are minimal. Accordingly, after examining the points and deriving analytical equations, algorithms and software tools were proposed. Key words: high-speed line, high-speed traffic, train, station, stage, mixed traffic, microprocessor-based semi-automatic blocking.

“…there are additional shunting zones for the approach and departure of the train from the track circuit. This zone can vary widely depending on state of upper structure of the track [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Determination of the optimal parameters of the control sensor at the crossing in the control mode

Aliev,

Khakimov

2023

On railway sections where there are intersections with road transport, control systems for crossing signaling with auto barriers are arranged. To control the entrance of the train to this section, track circuits with insulating joints are used. Such circuits have a number of significant drawbacks, one of which is the coming off of insulating joints, as well as breakage of the track circuit, which give 45% of the failures of automation systems on the haul. In this article, a study was made of a crossing track circuit with a tone frequency for the control mode. For the study, mathematical expressions for determining the most unfavorable moment were derived, an algorithmic expression for the control mode coefficient was presented, which gives more accurate information about the presence of damage. As a result, a block diagram was developed and graphs were displayed on the simulation model showing the influence and determination of the control mode of operation of the jointless tone track circuit. In conclusion, the results of the study are summarized.