Impact of Household PV Generation on the Voltage Quality in 0.4 kV Electric Grid—Case Study

This article (case study) discusses the influence of household photovoltaic generation on voltage quality in a three-phase 0.4 kV grid. The research analyzes remotely acquired data from two specially designed Y-connected power meters to understand PV system’s values voltages, currents, THD, individual harmonics, factor, and K-factor are obtained every 200 ms over several months, creating more than 20 GB data. loads typical electrical appliances EV portable chargers. main conclusion after analyzing measurements is that presence can create or increase grid unbalance; important current into neutral wire THD some cases. results also uncovered without sensing at connection point control inverter, balanced phase output grid-tied inverter harmful balance.