Temporal Variations of System Operating Conditions and Continuous Assessment of Low-Order Harmonic Emissions from Customer Installations: Voltage Harmonic Vector Approach

This paper addresses an important operational aspect of modern grids: the continuous assessment of low-order harmonic emissions from customer installations, taking into account temporal variations of system operating conditions. The Voltage Harmonic Vector (VHV) approach [1] is utilized while in a previous paper the modified IEC approach was used [2]. The presented results are obtained for actual and reference impedances of the supply system and customer installations, using the IEEE Benchmark Test System (BTS) previously proposed by the IEEE PES Task Force on harmonic Modelling, Simulation and Assessment. The simulation results for emission-relevant quantities confirm that this BTS can be used for probabilistic analysis, demonstrating the overall good performance of the VHV approach and illustrating differences in the results obtained with actual and reference impedances.