Transient detection algorithms for low cost electronic billing meters

The proposed algorithms allows single phase billing meters to detect some power quality disturbances. Those meters have limited processors. Thus they cannot handle complex algorithms, like Fourier transform and filters, required for the identification of voltage sags, swells, transients and harmonic distortions on a real-time basis. The proposed conversion of the single phase voltage samples to a virtual polyphase signal allows for reduction of the processor activity in detection of power quality events. This article shows such a conversion and the results obtained for events detection. Simulation results and the detections making use of a single phase low cost voltage meter are presented.