Harmonic Resonance Characteristics of a Residential Low Voltage Distribution Network Considering Typical Variations of Grid and Customer Characteristics

Harmonic resonances are increasingly observed in various central European networks, which are impacted by complex parameters. This paper considers the impact of variation in both grid-side and customer-side parameters. The grid-side variations include a change in cable lengths and the distribution of customers. The customer-side variations include the time-dependent combination of various household appliances and the resulting unbalance. In this paper, comprehensive simulation studies in a residential low voltage network show that the resonance frequency remains predominantly constant at various locations for simultaneous variation in different network parameters.