Deterministic aggregated harmonic source models for harmonic analysis of large medium voltage distribution networks. Issue 19 (4th October 2019)

• Record Type: Journal Article
• Authors: Bosovic, Adnan; Renner, Herwig; Abart, Andreas; Traxler, Ewald; Meyer, Jan; Domagk, Max; Music, Mustafa
• Is Part Of: IET generation, transmission & distribution. Volume 13:Issue 19(2019)
• Page Start: 4421
• Page End: 4430
• Publication Date: 2019-10-04
• Subjects: distribution networks -- power distribution faults -- power supply quality -- power system measurement -- harmonic distortion -- power system harmonics -- harmonic analysis -- IEC standards; harmonic analysis -- medium voltage distribution networks -- harmonic sources -- total harmonic voltages -- deterministic methodology -- MV distribution networks -- aggregate harmonic source models -- background harmonic voltages -- analysed network -- aggregate harmonic current emission -- different customer categories -- low‐voltage networks -- commercial customers -- LV networks -- residential office customer type configurations -- analysed MV network; Electric power production -- Periodicals; Electric power transmission -- Periodicals; Electric power distribution -- Periodicals; 621.3105
• DOI: 10.1049/iet-gtd.2018.7120
• Languages: English
• ISSNs: 1751-8687

Abstract

Abstract : Modelling of harmonics in large medium voltage (MV) distribution networks has so far been a challenge due to the presence of a large number of harmonic sources contributing to total harmonic voltages. This study proposes a deterministic methodology of modelling harmonics in large real MV distribution networks using aggregate harmonic source models parameterised based on measurements and results from the literature. In this research, background harmonic voltages from the sub‐transmission system are parameterised based on measurements in the analysed network. Aggregate harmonic current emission of different customer categories in low‐voltage (LV) networks (households and small commercial customers) parameterised based on several measurements in LV networks was dominated by residential or office customer type configurations. The harmonic current emission of industrial customers is parameterised based on the results from published literature. Two methods for modelling harmonic sources are used and compared: (i) modelling according to the IEC 61000‐3‐6 summation law and recommended summation exponents and (ii) modelling using complex phasors. The results of the models show a good match with the measurements from power quality monitors installed in the analysed MV network. Based on these results, the method according to the IEC 61000‐3‐6 is recommended for large MV distribution networks.