DC microgrids(DCMGs)are made up of a network of sources and loads that are connected by a number of power electronic converters(PECs).The increase in the number of these PECs instigates major concerns in system stabil...DC microgrids(DCMGs)are made up of a network of sources and loads that are connected by a number of power electronic converters(PECs).The increase in the number of these PECs instigates major concerns in system stability.While interconnecting the microgrids to form a cluster,the system stability must be ensured.This paper proposes a novel stepby-step system matrix building(SMB)algorithm to update the system matrix of an existing DCMG cluster when a new microgrid is added to the cluster through a distribution line.The stability of the individual DCMGs and the DCMG cluster is analyzed using the eigenvalue method.Further,the particle swarm optimization(PSO)algorithm is used to retune the controller gains if the newly formed cluster is not stable.The simulation of the DCMG cluster is carried out in MATLAB/Simulink environment to test the proposed algorithm.The results are also validated using the OP4510 real-time simulator(RTS).展开更多
在海岛可再生能源替代与电动汽车技术大规模应用的背景下,为解决偏远海岛居民的用电需求,提出了计及需求响应的电动汽车接入海岛微电网群的优化方法。首先,根据实际监测数据集对电动汽车充电行为建模,对比多种分布形式的联合评价和指标...在海岛可再生能源替代与电动汽车技术大规模应用的背景下,为解决偏远海岛居民的用电需求,提出了计及需求响应的电动汽车接入海岛微电网群的优化方法。首先,根据实际监测数据集对电动汽车充电行为建模,对比多种分布形式的联合评价和指标,得到拟合较好的概率分布函数。其次,选取多个海岛构成低碳化海岛能源系统,在考虑可再生能源渗透率和用户满意度的前提下,建立了以海岛微电网群的经济性和环保效益最优为目标的微电网群优化模型,利用蜘蛛蜂优化(spider wasp optimization,SWO)算法求解。最后,以浙江某海岛群为例进行验证,算例结果表明,所提海岛微电网群优化模型能够在满足可再生能源高渗透率的场景下,有效降低系统成本,更具经济性。展开更多
文摘DC microgrids(DCMGs)are made up of a network of sources and loads that are connected by a number of power electronic converters(PECs).The increase in the number of these PECs instigates major concerns in system stability.While interconnecting the microgrids to form a cluster,the system stability must be ensured.This paper proposes a novel stepby-step system matrix building(SMB)algorithm to update the system matrix of an existing DCMG cluster when a new microgrid is added to the cluster through a distribution line.The stability of the individual DCMGs and the DCMG cluster is analyzed using the eigenvalue method.Further,the particle swarm optimization(PSO)algorithm is used to retune the controller gains if the newly formed cluster is not stable.The simulation of the DCMG cluster is carried out in MATLAB/Simulink environment to test the proposed algorithm.The results are also validated using the OP4510 real-time simulator(RTS).
文摘在海岛可再生能源替代与电动汽车技术大规模应用的背景下,为解决偏远海岛居民的用电需求,提出了计及需求响应的电动汽车接入海岛微电网群的优化方法。首先,根据实际监测数据集对电动汽车充电行为建模,对比多种分布形式的联合评价和指标,得到拟合较好的概率分布函数。其次,选取多个海岛构成低碳化海岛能源系统,在考虑可再生能源渗透率和用户满意度的前提下,建立了以海岛微电网群的经济性和环保效益最优为目标的微电网群优化模型,利用蜘蛛蜂优化(spider wasp optimization,SWO)算法求解。最后,以浙江某海岛群为例进行验证,算例结果表明,所提海岛微电网群优化模型能够在满足可再生能源高渗透率的场景下,有效降低系统成本,更具经济性。