METHOD FOR REMOTE MEASUREMENT OF TRAIN SHUNT RESISTANCE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2021 - IPC G01R27/04 B61L23/00 

FIELD: railways.

SUBSTANCE: inventions relate to the field of railway automation and telemechanics, namely to methods and devices for remote measurement of the resistance of a train shunt. Essence: during the initial setup, the voltage at the input of the communication line and the current at the beginning of the communication line are measured with open connecting wires connected to the secondary winding of the matching transformer. Then the voltage at the input of the communication line and the current at the beginning of the communication line are measured with short-circuited connecting wires connected to the secondary winding of the matching transformer. One should calculate the sum of the resistances of the communication line, the matching transformer and the connecting wires when the secondary winding of the matching transformer is short-circuited. Under operating conditions, the voltage values ​​at the input of the communication line and the current at the beginning of the communication line in the shunt mode of the rail circuit are measured and the value of the sum of the resistances of the communication line, matching transformer, connecting wires and train shunt formed by the railway rolling stock is calculated. The calculation of the resistance value of the train shunt is carried out by subtracting from the sum of the resistances of the communication line, the matching transformer, connecting wires and the train shunt formed by the railway rolling stock, the resistance value of the communication line, matching transformer and connecting wires in case of a short circuit in the secondary winding of the matching transformer and dividing the resulting difference by the value of the transformation ratio of the matching transformer, squared. The device for remote measurement of a train shunt additionally consists of a switching unit, a control unit, a calculation unit, and an indication unit.

EFFECT: invention is aimed at increasing accuracy of remote measurement of the train shunt resistance by taking into account the resistance value of the connecting wires.

5 cl, 1 dwg