Numerical algorithm for measurement of angle phase shift for sines signal

This paper presents one method for measurement of phase shift between signals in electric power systems (EPS), such as voltages or currents. The presented algorithm is very simple and efficient, and it can be used for purposes of protection, control and measurement in EPS, as well. The algorithm is based on mathematically simple expressions, which do not require high processing power, so it is convenient for single chip applications. This algorithm is considered with high and low sampling rate, and proper pre-processing of signal in integrated data acquisition and control systems in EPS is proposed. It is shown that the achieved accuracy can satisfy requests of the intended application.