基于前推回代法的孤岛系统储能参数计算

Energy Storage Parameter Calculation for Isolated Systems Based on Forward/Backward Sweep Method

风柴储孤岛发电系统中,储能容量和充放电功率参数的不同选择将直接影响孤岛系统的供电质量和供电可靠性。为满足风柴储系统的供电充裕性,且避免因储能参数选择不当而导致系统经济性变差,需要合理选择储能装置的参数。在风柴储孤岛系统中,基于风电功率对负荷的满足程度,提出风柴储系统风电机组选型方法。基于风柴储孤岛发电系统对负荷的供电充裕性,定义了电量正负对序列,提出风柴储孤岛系统储能参数前推回代计算方法,并建立孤岛系统储能参数前推回代计算模型及系统充裕性评估模型。通过所提方法与传统充裕性评估方法的比较分析,证实了所提方法的正确性和有效性。

Different selection of rated capacity and charging/discharging power parameters will directly affect the power supply quality and system reliability for an isolated wind-diesel-storage system（WDSS）.In order to meet the power supply adequacy of WDSS and improve the system economy,suitable energy storing devices（ESD）selection should be made.Thus,a method for the selection of a wind turbine generator（WTG）type in a WDSS is presented based on the meeting degree of power output of WTG to load.A forward/backward sweep method for ESD selection is presented based on the power supply adequacy of WDSS,and an adequacy evaluation model for an isolated WDSS is developed.Comparisons between the proposed method and the traditional adequacy evaluation algorithm have verified the correctness and validity of the proposed method.