METHOD FOR DETERMINING DISTANCE TO SHORT CIRCUIT POINT OF AC CONTACT NETWORK (VERSIONS) Russian patent published in 2017 - IPC B60M1/00 G01R31/08 

FIELD: electricity.

SUBSTANCE: method for determining the distance to the short circuit point of the contact network is that at the moment of short circuit, the values of currents (I_A, I_B), voltages (U_A, U_B) and phase angles (ϕ_A,ϕ_B) between them are measured at adjacent substations. The phase displacement angles (ψ_A,ψ_B) between the idling voltage and the corresponding voltages (U_A, U_B) are determined. In addition, the distance (l_AB) between traction substations is determined. By means of implementing computational algorithms, the modulus (Z'_B) and the argument (α'_B) of the resistances of the substitution circuit, the current modulus (I_k) and the current argument (γ_K) in the short circuit point are found. The distance from the substation A to the short circuit point is then determined.

EFFECT: increasing the accuracy and simplifying the way to determine the remoteness of the short circuit.

2 cl, 3 dwg