scholarly journals Electromagnetic safety of high voltage traction networks

2019 ◽  
Vol 139 ◽  
pp. 01067
Author(s):  
Natalya Buyakova ◽  
Vasilij Zakaryukin ◽  
Andrey Kryukov
Keyword(s):  
Magnetic Field ◽  
High Voltage ◽  
Power Supply ◽  
Simulation Modeling ◽  
Ground Surface ◽  
Software Application ◽  
Traction Power Supply ◽  
Traction System ◽  
Supply Systems ◽  
Traction Power

The article provides procedure for simulation modeling of traction power supply systems which allows analyzing electromagnetic safety conditions in perspective high voltage traction net- works. Modeling of electromagnetic fields in the Fazonord software application proved that 50 kV traction system is characterized by the highest electromagnetic strength at a height of 1.8 m above the ground surface, while 2x25 kV system is characterized by the lowest one. Traditional traction system with 27.5 kV voltage is the worst in terms of magnetic field strength, while 2x50 kV is the best; auto- transformer systems of traction power supply create magnetic fields due to demagnetizing effect of power leads.

scholarly journals Electromagnetic safety enhancing in railway electric supply systems

2018 ◽  
Vol 58 ◽  
pp. 03003 ◽  
Author(s):  
Natal’ya Buyakova ◽  
Vasiliy Zakaryukin ◽  
Andrey Kryukov ◽  
Tu Nguyen
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Power Supply ◽  
Simulation Modeling ◽  
Power Networks ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Electric Supply ◽  
Traction Power

The methods of simulation modeling of traction power supply systems is developed, allowing analyzing the electromagnetic safety conditions in complex traction power networks equipped with sucking transformers. The effectiveness of the application of the sucking transformers (ST) connected in the rail cut with a distance of 3 km between transformers is small due to rails’ currents. The sucking transformers with return wires do not have this drawback. The use of ST with a return wire allows significantly improving the electromagnetic safety conditions: the level of magnetic field strength is reduced by tens of percent.

Digital models of advanced high-voltage traction power supply systems

2021 ◽  
pp. 83-91
Author(s):  
A. V. Kryukov ◽  
A. V. Cherepanov ◽  
A. D. Stepanov ◽  
D. A. Seredkin ◽  
I. A. Fesak
Keyword(s):  
High Voltage ◽  
Power Supply ◽  
Digital Models ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Traction Power

scholarly journals Control of electromagnetic environment in smart traction power supply systems

2019 ◽  
Vol 91 ◽  
pp. 01009
Author(s):  
Natalya Buyakova ◽  
Vasiliy Zakaryukin ◽  
Andrey Kryukov
Keyword(s):  
Magnetic Field ◽  
Field Strength ◽  
Magnetic Field Strength ◽  
Power Supply ◽  
Electromagnetic Environment ◽  
Traction Network ◽  
Traction Power Supply ◽  
Supply Systems ◽  
The Magnetic Field ◽  
Traction Power

The possibility of reducing the intensity of magnetic field created by a traction network of an alternating current electrified railroad is considered in the article. The electric field of such a traction network at a height of 1,8 m above is relatively small. In order to control the electromagnetic situation, 2x25 kV traction systems, sucking transformers with a return wire for the 25 kV system, amplifying and shielding wires of the traction network, passive screens on passenger platforms, optimization of train traffic schedules can be used. Fazonord software package developed at the Irkutsk State Transport University was used as a tool for the analysis of the above events. Using computer simulations, it was shown that the most effective methods for reducing the magnetic field strength are the use of screens on passenger platforms, optimal train schedules, and the use of “soft” train driving modes. The latter measure is able to reduce the peak magnetic field strength by about 25%.

scholarly journals Modeling of traction power supply systems for movement of high-speed trains

2018 ◽  
Vol 216 ◽  
pp. 02006
Author(s):  
Aleksandr Cherepanov ◽  
Vasily Zakaryukin ◽  
Andrey Kryukov
Keyword(s):  
Power Supply ◽  
High Speed ◽  
Rolling Stock ◽  
Software Complex ◽  
Positive Effects ◽  
High Speed Trains ◽  
Traction Power Supply ◽  
Traction System ◽  
Supply Systems ◽  
Traction Power

Upgrading of traction power supply systems will be required to transfer electrified railway lines to high-speed traffic. Coaxial cables and balancing transformers can be used as technical upgrading means. The article presents the results of computer simulation in the Fazonord software complex of the traditional 2x25 kV traction system, as well as systems with coaxial cables and Woodbridge symmetric transformers. Simulation results showed that the use of cables contributes to a significant increase in the level of voltage on current collectors of electric rolling stock. Use of modified Woodbridge transformers makes it possible to reduce the imbalance coefficient by the reverse sequence on high voltage buses of traction substations. However, the reduction is insignificant and depends on the modes of movement of trains in adjacent inter-station zones. The biggest positive effects occur in the integrated application of balancing transformers and coaxial cables.

scholarly journals Design and research on the function of lithium-ion batteries emergency traction system for rail vehicles

2018 ◽  
Vol 10 (12) ◽  
pp. 168781401881229
Author(s):  
Xiaoming Xu ◽  
Xudong Sun ◽  
Qiaolian Zhou ◽  
Xinhua Jiang ◽  
Donghai Hu ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Power Supply ◽  
Lithium Ion ◽  
Urban Rail ◽  
Entire Line ◽  
Emergency Power ◽  
External Power ◽  
Traction Power Supply ◽  
Traction System ◽  
Traction Power

Urban rail vehicle power supply short interruptions or prolonged paralysis situation sometimes occurs, which will cause the entire line outage. If the train through the battery to achieve emergency traction, it will be able to effectively solve the problem of train interval stop due to external power supply reasons. This article proposes an emergency traction system, using lithium-ion batteries as traction power, carrying out the design and research on the function of lithium-ion emergency traction system for rail transit vehicles. Through the design of the power supply system, the design of the emergency traction power supply, the design of the conversion control and safety protection circuit, the design of the traction system, and the design of the auxiliary system, the train can be run to the next station under the emergency power supply, and the effectiveness of the scheme is verified by simulation. Moreover, the transformation on the basis of the existing Shanghai 952 train illustrates the feasibility of the existing train to achieve the emergency traction function and provides guarantee for the safe operation of the train.

scholarly journals The method for increasing the efficiency of equipment’s maintenance in railway traction power supply systems

2018 ◽  
Vol 47 (3) ◽  
pp. 39-47 ◽  
Author(s):  
Oleksandr Matusevych ◽  
Valeriy Kuznetsov ◽  
Viktor SYCHENKO
Keyword(s):  
Power Supply ◽  
Operational Reliability ◽  
Technical Condition ◽  
Repair System ◽  
Maintenance And Repair ◽  
Traction Substations ◽  
Electric Equipment ◽  
Traction Power Supply ◽  
Supply Systems ◽  
Traction Power

Purpose. To develop the method for increasing the efficiency of the equipment’s maintenance and repair system, ensuring necessary level of operational reliability of the equipment, safety and reliability of the electric equipment with minimal expenses on operation. Relevance. Aging of the power equipment in railway power supply systems sharply raised a need for assessment of its states and degree of risk for operation outside rated service life. In critical conditions of technological processes and operational modes of the railways it is necessary to increase the equipment’s operational reliability. The scheduled maintenance and repair system whose main technical and economic criterion is the minimum of equipment’s downtimes on the basis of a rigid regulation of repair cycles, in the conditions of market regulations in the field of repair in many cases does not provide the optimal decisions due to insufficient financing. The solution of this problem is possible by improvement of the maintenance and repair system. Under these conditions the main direction for supporting the operational reliability of power electric equipment on TS is a development of the modern methods based on individual supervision over real changes of technical condition of power equipment. Scientific novelty. In this article the authors proposed an integrated approach, on the basis of which can be developed the effective maintenance and repair system for traction power supply systems. Proposed approach allowed to react quickly to changes of service conditions on traction substations, to control the technical condition of power electric equipment under the conditions of uncertainty, to establish interrelation between quality of service and operational reliability of the equipment, to choose a service strategy on traction substations. Practical importance. The validity of the developed method was confirmed by the results of calculations and practically by choosing the optimal maintenance's option for transformer TDTN-25000/150-70 U1 (ТДТН-25000/150-70 У1) on traction power supply substation.

Sign in / Sign up

Export Citation Format

Share Document