Research on the Control Strategy of Electric Vehicle Mobile Energy Storage in Ancillary Frequency Regulation
Bao Yan1, 2, Jia Li-min2, Jiang Jiu-chun1, Zhang Wei-ge1
1.National Active Distribution Network Technology Research Center Beijing Jiaotong University Beijing 100044 China 2.School of Traffic and Transportation Beijing Jiaotong University Beijing 100044 China
Abstract Numerous EVs have been integrated in the grid, which will not only act as controllable loads, but also as mobile energy storage systems to supply ancillaryservice and support.The advantages of EVs participated frequency control are analyzed in this paper at first.A framework and its operation principle of mobile energy storage assisted frequency regulation are then introduced.Based on the basic dynamic model of frequency regulation in the power system, the models of EVs participating in the primary and secondary frequency regulation are established.Based on this, the control strategy considering the vehicle constraints and users’ demands, which have been rarely discussed by other researchers, is proposed here.This strategy can satisfy the individual demand of users’use time and capacity, avoid exceeding the state of charge (SOC)limit or damaging the battery caused by the large charge-discharge current.The proposed models and control strategy are then implemented in two case studies, and their effectiveness is verified finally.
Bao Yan,Jia Li-min,Jiang Jiu-chun等. Research on the Control Strategy of Electric Vehicle Mobile Energy Storage in Ancillary Frequency Regulation[J]. Transactions of China Electrotechnical Society, 2015, 30(11): 115-126.
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2015, Vol. 30 
