Determination of the working energy capacity of the on-board energy storage system of an electric locomotive for quarry railway transport during working with a limitation of consumed power

Abstract

The use of specialized rail rolling stock which is used for transporting ore from the quarry to the crushing plant at mining enterprises is analyzed here. Electric locomotives with an asynchronous traction electric drive and an on-board energy storage system are considered for use. The calculated dependencies of the electric locomotive trac-tive power were analyzed and it was established that on flat sections of the track profile, the movement is carried out with a power that does not exceed 50% of the nominal one. The movement with the nominal power is carried out on the controlled uphill during the cargo half-passage. To ensure the necessary power for movement in such areas, the use of an on-board energy storage system is proposed, which should feed the traction system while limiting the power consumed from the catenary. This happens when the voltage on the pantograph drops to a minimum level. The aim of this work is to determine the on-board energy storage system parameters during the operation of the electric locomotive with limitation of the power consumed from the traction network. Mathemati-cal models of the energy exchange processes in the electric locomotive traction system have been developed. The criteria for comparing options for calculating the parameters of the on-board energy storage system have been proposed. The criteria take into account the reduction of energy consumption during movement, the efficiency of energy storage, and the complete use of the on-board energy storage system in terms of power and working energy capacity. Based on the calculation results, it was determined that the use of an energy storage device with a power of 3,540 kW and an operating energy capacity of 63.5 kWh provides a 10% reduction in energy consumption, which is being consumed while moving along the sample section of the road. The current that can be consumed by an electric locomotive with such parameters of the on-board energy storage system is limited by 600 A.

Research on the application of on-board energy storage on an electric locomotive for quarry railway transport

“…A system of copper contact wire and a bimetallic supporting cable is used in the contact suspension on the quarry railway transport. The continuous current of the PBSM-95+MF-100 contact network is 660...820 A depending on the degree of wear of the contact wire [26,27], while an increase in current by 1.3 times is allowed if the duration of its flow does not exceed 3 minutes. Since the actual degree of wear of the contact wire is unknown, and, in addition, there may be several electric locomotives on one feeder zone, it is advisable to take the limiting current close to the lower limit of the range.…”

An Estimation of the Energy Savings of a Mainline Diesel Locomotive Equipped with an Energy Storage Device

“…The maximum power of the energy storage in the traction mode of the booster section is 2156 kW, and in the energy storage mode with electrodynamic braking, this value is 2337 kW. To ensure the operation of the storage device, it must have a certain energy charge before starting [56,57]. At the same time, there is an almost monotonous change in energy in the accumulator, which allows us to estimate its minimum working energy capacity equal to the initial energy before movement.…”

Use of Park’s Vector Method for Monitoring the Rotor Condition of an Induction Motor as a Part of the Built-In Diagnostic System of Electric Drives of Transport

“…They are used as traction engines in railway transport, for driving compressors, machine-fans used for cooling traction engines, and for other equipment on rolling stock of railways and water transport [1][2][3][4]. Despite the fairly high reliability of induction electric Energies 2023, 16, 5109 2 of 14 motors with a squirrel-cage rotor among other types of electric motors, they are variously vulnerable to damage that affects their performance and failure during operation [5][6][7]. Especially for the operation of the transport infrastructure, the reduction of emergency failures is an important influential factor in the implementation of logistics technologies [8].…”