Impact of Non-Linear Small Power Receivers on Low Voltage Network Operation Conditions

Abstract

Abstract. The paper discusses the causes of distorted waveforms of currents and voltages in industrial electric power systems of low voltage. The ascending contribution of domestic and municipal customers, particularly office and as commercial as well as service and shopping centers where, non-linear loads and load phase unbalance are common, is indicated. Studies of voltage and current waveforms and their harmonics spectra at selected this type of facilities were carried out. The ability to compensate for the negative impact of low power consumer receivers using the active power filter has been demonstrated.

Analysis of higher harmonics in the power supply system of the administrative building with grouped nonlinear low-power loads

“…Svaki strujni izvor predstavlja injektiranu struju određenog uređaja ili grupu uređaja, baziranu na poznatim vrijednostima preuzetim iz literature, odakle su uzeti i amplituda i fazni uglovi za pojedine nelinearne potrošače [11], [12], [13], [14], [15]. Primjer jednostavnog modela grupe nelinearnih potrošača je prikazan na slici 9.…”