Power Quality Issues Concerning Photovoltaic Generation in Distribution Grids
- 1 Department of Electrical Power Engineering, Tallinn University of Technology, Tallinn, Estonia
- 2 Department of Electrical Engineering, Tallinn University of Technology, Tallinn, Estonia
- 3 Department of Electrical Power Engineering, Tallinn University of Technology, Tallinn, Estonia
- 4 Department of Electrical Engineering and Automation, Aalto University, Helsinki, Finland
- 5 Department of Electrical Power Engineering, Tallinn University of Technology, Tallinn, Estonia
Abstract
Unregulated utilization of renewable generation including residential photovoltaic (PV) systems can have a significant impact on load characteristics in distribution networks. For improving PV generation capabilities, power quality aspects have to be coordinated with present load characteristics. This paper discusses the harmonic content of PV generation and the influence to power quality indicators in residential distribution networks. PV generation measurement results including current harmonic amplitude and phase angle values are presented. Results of different modelling scenarios are analysed and a simplified model of harmonics in PVs is offered. The results of the study showed a moderate additional harmonic distortion in residential load current and voltage distortion at the substation’s busbar when PVs were added. Novelty of the paper is that harmonic current values at higher orders are presented and analysed. The results pointed out in this paper could be further used for modelling the actual harmonic loads of the PVs in distribution networks.
- Berthet, L., Eyrolles, P., Gauthier, J. and Sabeg, S. (2007) Harmonic Level Measurements on French Low-Voltage Networks. 19th International Conference on Electricity Distribution, Vienna.
- Aiello, M., Cataliotti, A., Favuzza, S. and Graditi, G. (2006) Theoretical and Experimental Comparison of Total Harmonic Distortion Factors for the Evaluation of Harmonic and Interharmonic Pollution of Grid-Connected Photovoltaic Systems. IEEE Transactions on Power Delivery, 21, 1390-1397. http://dx.doi.org/10.1109/TPWRD.2005.860231
- Jayasekara, N. and Wolfs, P. (2010) Analysis of Power Quality Impact of High Penetration PV in Residential Feeders. 20th Australasian Universities Power Engineering Conference (AUPEC), Christchurch.
- Rawa, M., Thomas, D. and Sumner, M. (2011) Simulation of Non-Linear Loads for Harmonic Studies. 11th International Conference on Electrical Power Quality and Utilisation (EPQU), Lisbon, 17-19 October 2011, 1-6. http://dx.doi.org/10.1109/EPQU.2011.6128915
- Renders, B., Degroote, L., Driesen, J. and Vandevelde, L. (2007) Profits of Power-Quality Improvement by Residential Distributed Generation. 42nd International Universities Power Engineering Conference, Brighton, 4-6 September 2007, 377-381. http://dx.doi.org/10.1109/upec.2007.4468976
- Kütt, L., Saarijrvi, E., Lehtonen, M. and Niitsoo, J. (2013) A Review of the Harmonic and Unbalance Effects in Electrical Distribution Networks Due to EV Charging. 13th International Conference on Environment and Electrical Engineering (EEEIC), Wroclaw.
- Bhattacharyya, S., Cobben, S., Ribeiro, P. and Kling, W. (2012) Harmonic Emission Limits and Responsibilities at a Point of Connection. IET Generation, Transmission & Distribution, 6, 256-264. http://dx.doi.org/10.1049/iet-gtd.2011.0376
- Niitsoo, J. and Palu, I. (2011) Distorted Load Impacts on Distribution Grid. Proceedings of the 12th International Scientific Conference Electric Power Engineering 2011, Kouty nad Desnou.
- Yong, J., Chen, L. and Chen, S. (2010) Modeling of Home Appliances for Power Distribution System Harmonic Analysis. IEEE Transactions on Power Delivery, 25, 3147-3155. http://dx.doi.org/10.1109/TPWRD.2010.2051960
- Block, P., Salamanca, H., Teixeira, M., Dahlke, D., Shiono, O. and Dodadon, A. (2014) Power Quality Analyses of a Large Scale Photovoltaic System. The 5th International Renewable Energy Congress IREC 2014, Hammamet, 25-27 March 2014, 1-6. http://dx.doi.org/10.1109/irec.2014.6826946