Impact of high PV penetration on distribution transformer insulation life

Pezeshki, Houman, Wolfs, Peter J., & Ledwich, Gerard (2014) Impact of high PV penetration on distribution transformer insulation life. IEEE Transactions on Power Delivery, 29(3), pp. 1212-1220.

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Abstract

The reliable operation of distribution systems is critically dependent on detailed understanding of load impacts on distribution transformer insulation systems. This paper estimates the impact of rooftop photovoltaic (PV) generation on a typical 200-kVA, 22/0.415-kV distribution transformer life under different operating conditions. This transformer supplies a suburban area with a high penetration of roof top photovoltaic systems. The transformer loads and the phase distribution of the PV systems are significantly unbalanced. Oil and hot-spot temperature and remnant life of distribution transformer under different PV and balance scenarios are calculated. It is shown that PV can significantly extend the transformer life.

Impact and interest:

14 citations in Scopus
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12 citations in Web of Science®

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623 since deposited on 23 Jan 2014
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ID Code: 66595
Item Type: Journal Article
Refereed: Yes
Keywords: Distribution transformer, Life assessment, Roof top PV, Unbalance operation
DOI: 10.1109/TPWRD.2013.2287002
ISSN: 0885-8977
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 IEEE
Deposited On: 23 Jan 2014 23:29
Last Modified: 15 Jun 2016 04:19

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