Operating in island mode when failure occurs in sure to maintain an uninterrupted power supply to significant loads. A two-stage approach that integrates optimal island partition and power dispatch is proposed in this...Operating in island mode when failure occurs in sure to maintain an uninterrupted power supply to significant loads. A two-stage approach that integrates optimal island partition and power dispatch is proposed in this paper, considering photovoltaics(PVs), batteries(BEs) and electric vehicles(EVs) as the power sources. In the first stage, energy indices are defined to describe the energy demand and the maximum energy that these distributed energy resources(DERs) can provide, and islands are partitioned based on an energy constraint. Considering the variability the loads and PVs, the energy constraint is a necessary but not sufficient condition for island operation,so in the second stage, a power dispatch model is proposed the active distribution network(ADN) is an effective mea-as a test for the island partition result. Sequential power flow is also simulated to guarantee a feasible and optimized island status. The situations when the tests are not passed are analyzed and classified, and corresponding modifications for the first stage model are provided. Multiple levels of constraints based on the energy index are established for the island partition model. The proposed approach has been validated through simulation using a modified IEEE 69-bus system which is divided into three districts with different load variability characteristics.展开更多
针对远洋海岛呈现源荷空间逆向分布的特征,提出一种计及共享全电船舶(shared electric vessel,SEV)参与的海岛电网日前调度策略。首先,提出SEV概念,利用电动旅游班船的闲置储能的共享化,实现岛际能量的转移。进而,根据SEV的时空转移特性...针对远洋海岛呈现源荷空间逆向分布的特征,提出一种计及共享全电船舶(shared electric vessel,SEV)参与的海岛电网日前调度策略。首先,提出SEV概念,利用电动旅游班船的闲置储能的共享化,实现岛际能量的转移。进而,根据SEV的时空转移特性,建立了精确的SEV模型。在此基础上,以系统运行成本最小为目标,构建了计及SEV参与的海岛电网日前调度模型,并通过Shapley值法对运营利益在SEV方和海岛电网方进行合理分配。仿真结果表明,基于SEV的远洋海岛能量供给系统在兼顾客运需求的同时实现灵活的新能源消纳和负荷支撑,通过"共享"实现"双赢"。展开更多
基金supported in part by the National Science Foundation of China(No.51477029)the National Science and Technology Support Program of China(No.2015BAA01B01)the State Grid Corporation of China(No.SGTYHT/14-JS-188)
文摘Operating in island mode when failure occurs in sure to maintain an uninterrupted power supply to significant loads. A two-stage approach that integrates optimal island partition and power dispatch is proposed in this paper, considering photovoltaics(PVs), batteries(BEs) and electric vehicles(EVs) as the power sources. In the first stage, energy indices are defined to describe the energy demand and the maximum energy that these distributed energy resources(DERs) can provide, and islands are partitioned based on an energy constraint. Considering the variability the loads and PVs, the energy constraint is a necessary but not sufficient condition for island operation,so in the second stage, a power dispatch model is proposed the active distribution network(ADN) is an effective mea-as a test for the island partition result. Sequential power flow is also simulated to guarantee a feasible and optimized island status. The situations when the tests are not passed are analyzed and classified, and corresponding modifications for the first stage model are provided. Multiple levels of constraints based on the energy index are established for the island partition model. The proposed approach has been validated through simulation using a modified IEEE 69-bus system which is divided into three districts with different load variability characteristics.
文摘针对远洋海岛呈现源荷空间逆向分布的特征,提出一种计及共享全电船舶(shared electric vessel,SEV)参与的海岛电网日前调度策略。首先,提出SEV概念,利用电动旅游班船的闲置储能的共享化,实现岛际能量的转移。进而,根据SEV的时空转移特性,建立了精确的SEV模型。在此基础上,以系统运行成本最小为目标,构建了计及SEV参与的海岛电网日前调度模型,并通过Shapley值法对运营利益在SEV方和海岛电网方进行合理分配。仿真结果表明,基于SEV的远洋海岛能量供给系统在兼顾客运需求的同时实现灵活的新能源消纳和负荷支撑,通过"共享"实现"双赢"。
