随着智能电网的快速发展,配电网中信息物理耦合关系日益紧密。这种耦合性使得配电网更容易被多方面极端事件所影响,在通信网络发生故障时会降低系统的态势感知和控制能力,从而制约配电网的灾后负荷恢复能力,因此通信网络恢复对灾后配电...随着智能电网的快速发展,配电网中信息物理耦合关系日益紧密。这种耦合性使得配电网更容易被多方面极端事件所影响,在通信网络发生故障时会降低系统的态势感知和控制能力,从而制约配电网的灾后负荷恢复能力,因此通信网络恢复对灾后配电网负荷恢复至关重要。该文提出一种通信网络恢复和负荷恢复的协同优化决策方案,该方案将环网通信网络与软件定义网络(software defined networking,SDN)技术相结合,灵活恢复灾后的配电网通信网络,进而控制配电网拓扑重构形成以分布式电源为中心的微电网以恢复负荷电力供应,并进一步使用一种信息物理协同的启发式计算方法实现恢复方案的快速计算。最后,使用IEEE 33节点和IEEE 123节点测试系统验证所提出方法的优点和有效性。展开更多
In this paper, our purpose is to make the results about π Frattini subgroup more accurate, and to extend Gaschütz Theorem about nilpotency to π locally defined formation. We come to Theorem L...In this paper, our purpose is to make the results about π Frattini subgroup more accurate, and to extend Gaschütz Theorem about nilpotency to π locally defined formation. We come to Theorem Let G be a finite group, H a subnormal subgroup of G. If H/H∩Φ(G)O π′ (G)∈F, then H∈F π, where F π is π solvable π locally defined formation.展开更多
文摘随着智能电网的快速发展,配电网中信息物理耦合关系日益紧密。这种耦合性使得配电网更容易被多方面极端事件所影响,在通信网络发生故障时会降低系统的态势感知和控制能力,从而制约配电网的灾后负荷恢复能力,因此通信网络恢复对灾后配电网负荷恢复至关重要。该文提出一种通信网络恢复和负荷恢复的协同优化决策方案,该方案将环网通信网络与软件定义网络(software defined networking,SDN)技术相结合,灵活恢复灾后的配电网通信网络,进而控制配电网拓扑重构形成以分布式电源为中心的微电网以恢复负荷电力供应,并进一步使用一种信息物理协同的启发式计算方法实现恢复方案的快速计算。最后,使用IEEE 33节点和IEEE 123节点测试系统验证所提出方法的优点和有效性。
文摘In this paper, our purpose is to make the results about π Frattini subgroup more accurate, and to extend Gaschütz Theorem about nilpotency to π locally defined formation. We come to Theorem Let G be a finite group, H a subnormal subgroup of G. If H/H∩Φ(G)O π′ (G)∈F, then H∈F π, where F π is π solvable π locally defined formation.