Investigation of the impacts of three-phase photovoltaic systems on three-phase unbalanced networks

Roediger, Stephanie, Yan, Ruifeng and Saha, Tapan (2012). Investigation of the impacts of three-phase photovoltaic systems on three-phase unbalanced networks. In: 2012 IEEE Power and Energy Society General Meeting. 2012 IEEE Power and Energy Society General Meeting, San Diego, United States, (1-8). 22-26 July 2012. doi:10.1109/PESGM.2012.6344697

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Author Roediger, Stephanie
Yan, Ruifeng
Saha, Tapan
Title of paper Investigation of the impacts of three-phase photovoltaic systems on three-phase unbalanced networks
Conference name 2012 IEEE Power and Energy Society General Meeting
Conference location San Diego, United States
Conference dates 22-26 July 2012
Proceedings title 2012 IEEE Power and Energy Society General Meeting
Journal name IEEE Power and Energy Society General Meeting
Place of Publication Piscataway, NJ, United States
Publisher IEEE - Institute for Electrical and Electronic Engineers
Publication Year 2012
Sub-type Fully published paper
DOI 10.1109/PESGM.2012.6344697
ISBN 9781467327282
9781467327275
ISSN 1944-9925
Start page 1
End page 8
Total pages 8
Collection year 2013
Language eng
Abstract/Summary More three-phase photovoltaic (PV) systems have been directly integrated to the electrical network at the distribution voltage level each year. Most of them are designed with balanced assumptions. In reality, under normal operating conditions distribution networks always have a certain degree of voltage imbalance, and these three-phase PV systems have already been implemented in such networks. However, their integration effects have yet to be fully identified and this should be thoroughly examined before the high PV penetration level causes serious problems in the near future. This paper studied the impacts of photovoltaic integration to an unbalanced distribution network. Using PSCAD and Matlab/Simulink softwares a three-phase photovoltaic model was built based on commonly applied balanced theories. This model was then implemented to the unbalanced IEEE 13 bus system. From simulation observation and mathematical analysis it has been determined that when voltage imbalance is within the allowable range defined by the standards the PV system achieves an approximately balanced current injection to each phase. As a result, it is suitable to implement a simplified current source model of the PV system for network analysis under such realistic operating conditions.
Keyword Photovoltaic
Voltage imbalance
Distribution network
Power fluctuation
Q-Index Code E1
Q-Index Status Confirmed Code
Institutional Status UQ

 
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Created: Fri, 31 Aug 2012, 15:38:29 EST by Dr Ruifeng Yan on behalf of School of Information Technol and Elec Engineering