METHOD FOR DETERMINING THE DISTANCE OF A SHORT CIRCUIT IN THE AC CONTACT NETWORK OF A MULTIPATH SECTION (OPTIONS) Russian patent published in 2021 - IPC B60M1/00 G01R31/08 

FIELD: electricity; power supply lines.

SUBSTANCE: group of inventions relates to power supply lines for electric vehicles. In a method for determining the distance of a short circuit in the AC contact network of a multipath section by the parameters of the emergency mode, the voltage U_Sub on the buses feeding the contact network, the current I´₁ of the supply line of the damaged contact network and the phase shift angle φ₁ between them are measured. In this case, the current I₂ of the supply line of the intact contact network of any of the adjacent paths of the same direction and the phase shift angle φ₂ between the specified current and the voltage U_Sub are additionally measured. Using a computational algorithm, the phase shift angle φ_K is calculated between the total current flowing through the short-circuit site and the voltage U_Sub, and the value of the functions z_y1 and z_y2 is also calculated. Then, using the obtained values, the distance of the short circuit is determined using a final computational algorithm. The second variant of the method for determining the distance of a short circuit in the AC contact network of a multipath section by the parameters of the emergency mode is also claimed.

EFFECT: invention makes it possible to increase the accuracy of determining the distance of a short circuit in the contact network.

10 cl, 1 dwg