METHOD OF DETERMINING INITIAL PHASE OF VOLTAGE AT RECEIVING END OF RAIL LINE

摘要

FIELD: railway signaling and communication. ^ SUBSTANCE: invention is designed for monitoring state of rail lines included into sinusoidal current circuits. Effective values of voltages and currents U1, U2, I1, I2 are present at supply and receiving ends of rail line, and phase shift between voltage U2 and current I2 is Deltaϕ 2. Wave impedance Zcl of rail line, nominal wave propagation factor Ysh.c, and nominal coefficient Zwi at normal duty and under load gamma n=an+jbn, are preliminarily calculated basing on known length 1 km of rail line, nominal value of rail circuit complex impedance Kn=U1n/U2n, nominal shunt conductance Zn=Zwi. Using measurands U1, U2, I1, I2 and Deltaϕ 2 real load of rail line and coefficient K=(U2. I2)/(U1. I2), are calculated and at Zn≈ Zwi phase of voltage U2 is found from equation ^ EFFECT: simplified set of operations, sync voltage is not required.