Title:	Voltage Control in Low Voltage Networks by Photovoltaic Inverters – PVNET.dk
Author(s):	S.B. Kjær, R.D. Lazar, A. Constantin, H.P. Ballegaard, G. Yang, J. Østergaard, H.H. Ipsen, K.H. Frederiksen
Keywords:	Dissemination, Grid-Connected, R&D and Demonstration Program, Grid Control, Grid Integration
Topic:	PV SYSTEMS
Subtopic:	PV System and Grid Integration Aspects
Event:	28th European Photovoltaic Solar Energy Conference and Exhibition
Session:	5AO.8.2
Pages:	3622 - 3626
ISBN:	3-936338-33-7
Paper DOI:	10.4229/28thEUPVSEC2013-5AO.8.2
Price:	0,00 EUR
Document(s):	paper, presentation

Abstract/Summary:

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This paper provides an analysis on the main voltage regulation techniques, PF(P) and Q(U) that can be applied in the low voltage (LV) network with standard photovoltaic (PV) inverter technology. The investigations are done by simulating the power flow in the LV and MV network over one year, with real load and irradiance profiles. The conclusion is that by installing a certain amount of solar PV in the LV network, the losses in the network can be reduced. For Denmark with around 70 000 distributions transformers and underlying LV networks, the yearly reduction of losses in the LV network could supply approximately 14 500 households. Another results is, that a normal distribution transformer can host up to 140% solar PV power without being significantly over-loaded.