Technical and Economic Impact of PV-BESS Charging Station on Transformer Life: A Case Study
Technical and Economic Impact of PV-BESS Charging Station on Transformer Life: A Case Study
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DOI：
10.1109/tsg.2018.2866938
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发表时间：
2019-07-01
影响因子：
9.6
通讯作者：
Kezunovic, Mladen
中科院分区：
文献类型：
--
作者：
Affonso, Carolina de Mattos;Kezunovic, Mladen
停车场中的几个插电式电动车辆的不协调充电可能会使配电Transformer过载，从而缩短其使用寿命。为了解决这一问题，本文提出了一种智能充电方法，通过考虑集成光伏发电和电池储能系统的充电站，最大限度地降低电力消耗成本，避免Transformer过载。所有这些元素之间的最佳协调评估Transformer热点温度和寿命损失，考虑时间的使用率和来自美国德克萨斯州的气象数据的案例研究。此外，还进行了经济分析，以评估该项目的可行性，并进行了敏感性研究，考虑到不同的收费和每天停放在车库的车辆数量的变化。结果表明，所提出的方法是可行的，产生切实的经济效益，并可以保持配电Transformer的生活。
The uncoordinated charging of several plug-in electric vehicles in a parking garage can potentially overload distribution transformer reducing its lifespan. Attempting to mitigate this issue, this paper proposes a smart charging method to minimize electricity consumption costs and avoid transformer overloading by considering a charging station integrated with photovoltaic generation and battery energy storage system. The optimal coordination among all these elements is investigated assessing transformer hottest-spot temperature and loss-of-life, considering a case study with time-of-use rate and meteorological data from Texas, USA. In addition, an economic analysis is developed to evaluate the viability of the project, with a sensitivity study considering different charging fees and variation in the daily number of vehicles parked in the garage. The results show the proposed approach is feasible, yields tangible financial benefits and can preserve distribution transformer life.