Influence of Distributed Capacitance in Railway Cable-Only Continuous Power Transmission Line and Its Compensation

There is not a sound method which can solve the compensation problem of the distributed capacitance current in 10 kV railway cable-only continuous power transmission line. The feasibilities and disadvantages of the two present technologies are analyzed and discussed, the one of which is the grounded wye-reactor, and the other is using the neutral resonance grounding system. A novel optimum compensation scheme that combines the two technologies to solve this problem is proposed. The power factor at the head and the voltage at the end of the line and the single-phase grounding current are modeled and analyzed in this paper. It is proved that the compensation to the inductive reactive power is necessary to the correction of the power factor