Risk Assessment of Transformer Loss-of-Life due to PEV Charging in a Parking Garage with PV Generation
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abstract
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)