Model of the traction and external power supply system joint operation

The paper presents a description of mathematical model designed to study the joint operation of 25 kV alternating current traction power supply systems and 110 - 750 kV power supply systemsThe design concept of three-phase and single-phase PU-generators on the basis of the EMF source behind inductive resistance as well as three-phase and single-phase loads is considered. Based on the above mathematical expressions, a computer model has been developed to analyze the joint operation of three-phase networks of external power supply and single-phase traction networks. The model is implemented in the software package MATLAB -Simulink. Using this computer model the influence of power overflows in the 110 - 330 kV network of PJSC “Karelenergo” and PJSC “FGC UES” on the equalizing currents in the traction network of the Knyazhaya-Idel’ section of the October railroad was analyzed. Brief analysis of modeling results is presented.

Design of Inbuilt Automatic Pneumatic Jack for Four Wheelers

This project deals with design and manufacturing of automatic pneumatic jack, which can lift the light weight vehicles and will be use full to maintain and inspect the vehicle’s vital components connected to downside. This jack would be permanently mounted on the chassis on the vehicle and will be automatically operated which will eliminate manually operating it to raise the vehicle and would save valuable time. The most important thing about this research is that it does not require any external power supply for its functioning and it consists of the pneumatic system and hence does not require the storage of air as it is easily available unlike the hydraulic system where the oil tank is required to store the oil. The objective of the project is to develop an automatic pneumatic lifter which automatically lifts the vehicle.

Development of an Algorithm for Reducing Accidents in the External Power Supply System of Kuzbass Coal Mines

One of the most important areas is to ensure the required reliability of power supply to coal mining enterprises. This problem is associated with the high hazard due to accidents at coal mines. The article discusses approaches to solving the problem of finding the best ways to improve the efficiency of the external power supply system. This makes it possible to increase the reliability of power supply to the coal mines of the Kemerovo region – Kuzbass. On the basis of the information method, an algorithm has been developed that makes it possible to take into account the topology of the electrical network, increasing its reliability. Measures to improve the external power supply of LLC “Mine“ Pervomayskaya” are proposed and substantiated. A feasibility study for the direction of increasing the stability of the structure of the electrical network is presented.