Journal of Electrical Engineering and Electronic TechnologyISSN: 2325-9833

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Research Article, J Electr Eng Electron Technol Vol: 6 Issue: 4

Power Factor Analysis in Distribution Network with Roof Photovoltaic Units

Ciric RM1* and Markovic MLJ2

1Professor of Power Systems at the Higher Education Technical School of Professional Studies in Novi Sad, Serbia and Senior Research Fellow at the Faculty of Electrical Engineering, University of Belgrade, Serbia

2Power Engineer-Specialist at the EPS ElektrodistribucijaSrbije, Sabac Branch, Serbia

*Corresponding Author : Ciric RM
Professor of Power Systems at the Higher Education Technical School of Professional Studies in Novi Sad, Serbia and Senior Research Fellow at the Faculty of Electrical Engineering, University of Belgrade, Serbia
Tel: +381 21 4892 557
E-mail: [email protected]

Received: June 23, 2017 Accepted: September 01 2017 Published: September 08, 2017

Citation: Ciric RM, Markovic MLJ (2017) Power Factor Analysis in Distribution Network with Roof Photovoltaic Units. J Electr Eng Electron Technol 6:4. doi: 10.4172/2325-9833.1000148

Abstract

In last decade considerable efforts have been made in the study of impact of photovoltaicunits on the power system performance. Maintaining the power factor at the connection point of photovoltaicunits is important since it allows greater flexibility of supply and power quality demanded by consumers. In this paper a power factor analysis of group of fixed roof photovoltaic power plants (PVPPs) connected to the low voltage distribution network is presented. Power factor analysis was based on the extensive yearly measurement of electricity production of seven PVPPs, recording maximal mean 15-minutes power as well as one-minute power at the 20 kV feeder head and PVPPs connecting points. The correlation between power factor of the feeder and electricity production of the PVPPs for the specific period of day are obtained. Besides, the effects of the power factor of PVPPs on the voltage conditions in the low voltage network are analyzed. Discussions of the results and conclusions that may be of interest to improve the performance of small and medium size on-grid PVPPs, are presented.

Keywords: On grid photovoltaic units; Low-voltage network; Power factor; Voltage profile; Hosting capacity

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