METHOD OF DETERMINING REMOTENESS OF SHORT CURCUIT IN CONTACT NETWORK OF ELECTRIC TRANSPORT (VERSIONS)

摘要

FIELD: electricity.;SUBSTANCE: method for determining the remoteness of the short-circuit of the contact network is that at the moment of a short circuit the values of the currents (I_A, I_B), voltages (U_A, U_B) and phase angles (ϕ_A, ϕ_B) therebetween are measured at adjacent substations. Additional phase angles (ψ_A, ψ_B) are determined, using the parameters of the no-load voltage (U_A0, U_B0) and of resistances (X_nA, X_nB). By means of implementing the computational algorithms, additional modules ($\mathop{\mathrm{image}}$) and arguments ($\mathop{\mathrm{image}}$) of the substitution circuit resistances, the current modulus (I_K) and the current argument (γ_K) in the short circuit location are found. Then the distances from substation A to the short circuit location are determined.;EFFECT: increasing the accuracy and simplifying the method for determining the remoteness of a short circuit.;2 cl, 3 dwg