Interoperability Issues in PQ and PMU Measurements for Reduced Inertia Power Systems

The increasing installation of renewable energy sources threatens the correct functioning of power systems, affecting especially power quality and power system inertia. To tackle these issues, a possible solution consists of the placement of Phasor Measurement Units (PMUs) and Power Quality (PQ) meters which could enhance the system observability and real time control. Given the different characteristics and working principles of these devices, in this paper, we focus on the interoperability of PMUs and PQ meters. To achieve this, a distribution network including an extensive penetration of renewable energy sources is simulated, jointly with PMU and PQ meters. The correlation of their measurements is studied, arising issues in the aggregation and comparison of different measurements not only in high harmonic distortion but also in low-inertia conditions.