Abstract :
This paper presents a unified power signal processor (PSP) for use in various applications in power systems. The introduced PSP is capable of providing a large number of signals and pieces of information which are frequently required for control, protection, status evaluation, and power quality monitoring of power systems. The PSP receives a set of locally measured three-phase voltage and current signals and provides their fundamental components, amplitudes, phase angles, frequency, harmonics, instantaneous and stationary symmetrical components, active and reactive currents and powers, power factor, and the total harmonic distortion. Simplicity and integrity of its structure as well as its robustness with respect to internal parameters and external disturbances and noise render the proposed scheme very attractive for practical implementations.
Keywords :
frequency estimation; harmonic analysis; harmonic distortion; phase locked loops; power factor; power supply quality; power system control; power system harmonics; power system protection; signal processing; synchronisation; PLL; active current; amplitude detection; current signals; frequency estimation; phase angles; phase detection; power factor; power quality monitoring; power system applications; power system control; power system protection; reactive currents; signal processing module; stationary symmetrical components; status evaluation; synchronization; three-phase voltage; total harmonic distortion; Control systems; Distortion measurement; Monitoring; Power quality; Power system control; Power system harmonics; Power system measurements; Power system protection; Power systems; Signal processing;
