High-order harmonics in the traction power supply show negative effects on safe and stable operation of railway transportation system. There is a fixed resonant frequency network. When harmonic current produced by locomotive matches network, it will cause high-frequency overvoltage. The propagation path high-order load analyzed based V/v wiring transformer. characteristics self-used equipment a...

Ferroresonance occurrence represents a very dangerous phenomenon to electric power systems. Concerning the recent trend of applications grid-connected wind farms, this can lead undesired overvoltages stressing farm components. In paper, ferroresonance are studied and mitigated for farm. Single-pole switching breaker is considered, where it most famous reason behind transient events in During pe...

With the rapid increase in proportion of installed wind power capacity total grid capacity, state has put forward higher and requirements for integration into grid, among which most difficult requirement is zero-voltage ride through (ZVRT) capability turbine. When voltage drops deeply, a series transient processes, such as serious overvoltage, overcurrent, or speed rise, will occur motor, serio...

This paper introduces the indicators for surge arrester condition assessment based on the leakage current analysis. Maximum amplitude of fundamental harmonic of the resistive leakage current, maximum amplitude of third harmonic of the resistive leakage current and maximum amplitude of fundamental harmonic of the capacitive leakage current were used as indicators for surge arrester condition mon...