Voltage imbalance analysis in residential low voltage distribution networks with rooftop PVs
Shahnia, F., Majumder, R., Ghosh, A., Ledwich, G. and Zare, F. (2011) Voltage imbalance analysis in residential low voltage distribution networks with rooftop PVs. Electric Power Systems Research, 81 (9). pp. 1805-1814.
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The installation of domestic rooftop photovoltaic cells (PVs) are on the rise due to feed-in tariff and changes driven by environmental concerns. Even though the increase in the PV installation is gradual, their locations and ratings are often random. Therefore, such single-phase bi-directional power flow can have adverse effect on the voltage imbalance of a three-phase distribution network. In this paper, a voltage imbalance sensitivity analysis and stochastic evaluation based on the ratings and locations of single-phase grid-connected rooftop PVs in a residential low voltage distribution network are presented. The stochastic evaluation, based on Monte Carlo method, predicts a failure index of non-standard voltage imbalance in the network in presence of PVs. Some improvement methods are discussed and a new improvement method based on PV converter control is proposed.
|Publication Type:||Journal Article|
|Copyright:||© 2011 Elsevier B.V.|
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