To address the limitations of traditional planning methods in handling complex scenarios such as multi-feeder or substation cluster supply under high photovoltaic(PV)penetration,this paper proposes a collaborative con...To address the limitations of traditional planning methods in handling complex scenarios such as multi-feeder or substation cluster supply under high photovoltaic(PV)penetration,this paper proposes a collaborative configuration optimization method of soft open points(SOPs)and distributed multi-energy stations with spatiotemporal coordination and complementarity to reduce renewable energy curtailment.First,a shared strategy of multiple types of resources is proposed based on an SOP-enabled flexible distribution network.Second,a distributed hydrogen-based multi-energy coupling system(DHMECS)is developed.Then,a DHMECS siting model considering inter-feeder resource sharing is formulated.Finally,a configuration model of SOP and DHMECS is proposed,incorporating a partitioned autonomous operation strategy that considers spatiotemporal coordination and complementarity.The proposed method is validated on the improved Portugal 54-node and 219-node distribution networks,and the results demonstrate that it mitigates severe voltage violations and PV curtailment,enhances partitioned autonomous operation capabilities,and addresses the challenges of complex planning scenarios involving multi-feeder or substation cluster supply.展开更多
Reliable planning and operation of power distribution systems are of great significance. In this paper, the impactincrement based state enumeration(IIBSE) method is modified to adapt to the features of distribution sy...Reliable planning and operation of power distribution systems are of great significance. In this paper, the impactincrement based state enumeration(IIBSE) method is modified to adapt to the features of distribution systems. With the proposed method, the expectation, probabilistic, and duration reliability indices can be accurately obtained with a lower enumerated order of contingency states. In addition, the time-consuming optimal power flow(OPF) calculation can be replaced by a simple matrix operation for both independent and radial series failure states. Therefore, the accuracy and efficiency of the assessment process are improved comprehensively. The case of RBTS bus 6 system and IEEE 123 node test feeder system are utilized to test the performance of the modified IIBSE. The results show the superiority of the proposed method over Monte Carlo(MC) sampling and state enumeration(SE) methods in distribution systems.展开更多
基金supported by Smart Grid-National Science and Technology Major Project(No.2024ZD0800800)Science and Technology Project of State Grid Corporation of China“Low-carbon and Reliable Urban Power Distribution System Demonstration Project”(No.SGTJDK00DWJS2400298).
文摘To address the limitations of traditional planning methods in handling complex scenarios such as multi-feeder or substation cluster supply under high photovoltaic(PV)penetration,this paper proposes a collaborative configuration optimization method of soft open points(SOPs)and distributed multi-energy stations with spatiotemporal coordination and complementarity to reduce renewable energy curtailment.First,a shared strategy of multiple types of resources is proposed based on an SOP-enabled flexible distribution network.Second,a distributed hydrogen-based multi-energy coupling system(DHMECS)is developed.Then,a DHMECS siting model considering inter-feeder resource sharing is formulated.Finally,a configuration model of SOP and DHMECS is proposed,incorporating a partitioned autonomous operation strategy that considers spatiotemporal coordination and complementarity.The proposed method is validated on the improved Portugal 54-node and 219-node distribution networks,and the results demonstrate that it mitigates severe voltage violations and PV curtailment,enhances partitioned autonomous operation capabilities,and addresses the challenges of complex planning scenarios involving multi-feeder or substation cluster supply.
基金supported in part by the National Natural Science Foundation of China (No.52077150)the National Key Research and Development Program of China (No.2019YFE0118000)。
文摘Reliable planning and operation of power distribution systems are of great significance. In this paper, the impactincrement based state enumeration(IIBSE) method is modified to adapt to the features of distribution systems. With the proposed method, the expectation, probabilistic, and duration reliability indices can be accurately obtained with a lower enumerated order of contingency states. In addition, the time-consuming optimal power flow(OPF) calculation can be replaced by a simple matrix operation for both independent and radial series failure states. Therefore, the accuracy and efficiency of the assessment process are improved comprehensively. The case of RBTS bus 6 system and IEEE 123 node test feeder system are utilized to test the performance of the modified IIBSE. The results show the superiority of the proposed method over Monte Carlo(MC) sampling and state enumeration(SE) methods in distribution systems.
