Parameter Tuning and Strategic Placement of Passive Harmonic Filters for Power Quality Enhacement in Modern Distribution Networks

The integration of renewable energy sources (RESs), particularly photovoltaic (PV) systems, presents new challenges for the functioning of distribution systems. The higher harmonics generated by the power converters of RES lead to noticeable issues with electricity quality. This paper introduces a methodology for the optimal placement and parameterization of passive harmonic filters (PHFs) in distribution networks that incorporate PV systems. This approach is based on two key components: the voltage stability index (VSI) for determining location and Particle Swarm Optimization (PSO) used for parameter tuning. The simulation was conducted on an enhanced IEEE 69-bus test system, which included integrated PV systems and non-linear loads, while also accounting for the uncertainties in both PV production and electrical load. Two optimization scenarios are targeting power quality improvement, power loss reduction and lowering the PHF investment cost.