This paper presents a novel fault location method for series compensated transmission lines. It is established based on synchronized voltages sampling and Thevenin impedance from both ends of series compensated transmission line. The method is based on the use of phasor measurement units (PMU) technology which is aimed to be independent of current measurements, fault type, fault resistance, fau...

The state of charge (SOC) plays a critical role in battery management systems. This paper discusses the stability nonlinear SOC observer based on extended Kalman filter. model characterizing lithium-ion nonlinearity is basis analysis. After balancing accuracy and complexity models, Thevenin logarithmic fitting OCV (open circuit voltage) are employed. theoretically analyzed from two aspects: par...