Risk Assessment of Transformer Loss-of-Life due to PEV Charging in a Parking Garage with PV Generation Conference Paper uri icon


  • 2018 IEEE. This paper presents a probabilistic risk assessment methodology to evaluate distribution transformer loss-of-life in a commercial building parking garage, in the presence of plug-in electric vehicle (PEV) charging stations and local photovoltaic generation. The Monte Carlo method is applied to address the uncertainties resulting from PEV charging, photovoltaic generation and garage load. A risk matrix combining the severity measures and associated probability distribution function is used to quantify the risk of transformer loss-of-life. The results show a significant reduction in transformer loss-of-life risk when connecting photovoltaic generation, resulting in saving avoiding transformer aging and early replacement. Based on the findings, the proposed method can be a helpful tool in the decision making process that needs to balance the risk and investment costs.

name of conference

  • 2018 IEEE Power & Energy Society General Meeting (PESGM)

published proceedings


author list (cited authors)

  • Affonso, C. M., Yan, Q., & Kezunovic, M.

citation count

  • 7

complete list of authors

  • Affonso, Carolina M||Yan, Qin||Kezunovic, Mladen

publication date

  • August 2018