DSP based Instrument for Real-Time PQ Analysis

In the paper, the characterization of designed and implemented high-performance real-time power quality measuring instrument is discussed. After a description of the hardware, in term of devices chosen, firmware, in terms of peripheral settings, data acquisition management and data transfer mode, the paper continues with the discussion of power quality analyzer software, showing each single implemented algorithm. In particular, some sections of algorithm are discussed and then characterized; the paper is completed with metrological characterization of the whole instrument prototype, through various types of test signals, that emulate the extreme work conditions.