Analysis of the Practical Implementation of Flicker Measurement Coprocessor for AMI Meters

Monitoring power quality (PQ) indicators is an important part of modern grids’ maintenance. Among different PQ indicators, flicker severity coefficients Pst and Plt are measures voltage fluctuations. In state-of-the-art measuring devices, the measurement channel usually implemented as a dedicated processor subsystem. Implementation IEC 61000-4-15 compliant algorithm requires significant amount computational power. typical analysers, meter’s performed by main processor. This paper considers implementation FPGA module to offload subsystem or operate IP core in FPGA-based system-on-chip units. The developed validated Simulink diagram, which then converted fixed-point representation. Parts diagram applied for automatic VHDL code generation, classifier block local soft-processor system. A simple eight-bit operates within coprocessor performs statistical operations. Finally, created that can be considered module. When using coprocessor, processor’s only role trigger read results, while independently calculates coefficients.