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Evaluation for V2G Available Capacity of Battery Groups of Electric Vehicles as Energy Storage Elements in Microgrid |
Weng Guoqing, Zhang Youbing, Qi Jun, Xie Luyao |
Zhejiang University of Technology Hangzhou 310023 China |
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Abstract A new concept of V2G available capacity is defined to represent the ability of dynamic and two-way energy balance for the battery groups of electric vehicles(EV) as energy storage elements in one microgrid based on vehicle to grid (V2G) technology. Three kinds of battery groups are defined, including battery group of private EV, battery group of public EV and battery group for secondary use. With effective representation of capacity variation in different time sections and deeper analysis in many aspects for the multiple battery groups, such as management modes, behavioral characteristics, configuration parameters, and etc. The real-time evaluation models of V2G available capacity for each kind of battery group are proposed, which will provide effective basis to develop the energy optimization control strategy for target microgrid. With the example of the PV-wind- diesel-battery hybrid microgrid in the area of Nanji Island in Wenzhou, Zhejiang province, feasibility and validity of the presented scheme and evaluation method are demonstrated.
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Received: 02 December 2013
Published: 05 November 2014
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