Utilizing interfacial interaction between different components of a heterojunction to induce defect formation may be an interesting approach for improving the catalytic performance.Here,introducing 3 nm CdS clusters(S...Utilizing interfacial interaction between different components of a heterojunction to induce defect formation may be an interesting approach for improving the catalytic performance.Here,introducing 3 nm CdS clusters(S)on NH_(2)-MIL-125(Ti)nanosheets(NMT-NS)to construct the heterojunction catalysts(Sx/NMT-NS)can induce the generation of abundant defects and Ti^(3+)sites due to the lattice distortion of NMT-NS and the transfer of interfacial charges.These defects and Ti^(3+)sites can chemisorb benzyl alcohol(BZO)molecules through a C–O…Ti coordination while capture and activate O2molecules from air.Furthermore,Z-scheme heterojunction between Cd S clusters and NMT-NS optimizes the transfer and separation of photogenerated electrons-holes,thus accelerating the production of·O_(2)^(-).Therefore,S1.8/NMT-NS achieves a highly efficient conversion of benzylamine(BZA)(>99%)and BZO to N-benzylidene benzylamine(N-BZA)in air atmosphere under visible light,with a selectivity of 99%.Finally,a photocatalytic mechanism involving the activation of reactants molecule and the transfer of photogenerated carriers is propounded at molecular level.展开更多
A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo...A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo-and regio-selectivity.展开更多
The coordinated control of multiple-sources including wind,photovoltaic(PV)and storage brings new challenges to traditional dispatch and control technologies.This paper firstly introduces a framework of wind,PV and st...The coordinated control of multiple-sources including wind,photovoltaic(PV)and storage brings new challenges to traditional dispatch and control technologies.This paper firstly introduces a framework of wind,PV and storage co-generation monitoring system.Then,key technologies of co-generation monitoring system including day-ahead optimal dispatching,active power coordinated control and reactive power and voltage control are proposed.The framework and the techniques described in this paper have been applied in the National Wind,Photovoltaic,Storage and Transmission Demonstration Project of China,and their validity have been tested and verified.展开更多
In the existing multi-period robust optimization methods for the optimal power flow in radial distribution systems,the capability of distributed generators(DGs)to regulate the reactive power,the operation costs of the...In the existing multi-period robust optimization methods for the optimal power flow in radial distribution systems,the capability of distributed generators(DGs)to regulate the reactive power,the operation costs of the regulation equipment,and the current of the shunt capacitor of the cables are not considered.In this paper,a multi-period two-stage robust scheduling strategy that aims to minimize the total cost of the power supply is developed.This strategy considers the time-ofuse price,the capability of the DGs to regulate the active and reactive power,the action costs of the regulation equipment,and the current of the shunt capacitors of the cables in a radial distribution system.Furthermore,the numbers of variables and constraints in the first-stage model remain constant during the iteration to enhance the computation efficiency.To solve the second-stage model,only the model of each period needs to be solved.Then,their objective values are accumulated,revealing that the computation rate using the proposed method is much higher than that of existing methods.The effectiveness of the proposed method is validated by actual 4-bus,IEEE 33-bus,and PG 69-bus distribution systems.展开更多
First, a three-tier coordinated scheduling system consisting of a distribution network dispatch layer, a microgrid centralized control layer, and local control layer in the energy internet is proposed. The multi-time ...First, a three-tier coordinated scheduling system consisting of a distribution network dispatch layer, a microgrid centralized control layer, and local control layer in the energy internet is proposed. The multi-time scale optimal scheduling of the microgrid based on Model Predictive Control（MPC） is then studied, and the optimized genetic algorithm and the microgrid multi-time rolling optimization strategy are used to optimize the datahead scheduling phase and the intra-day optimization phase. Next, based on the three-tier coordinated scheduling architecture, the operation loss model of the distribution network is solved using the improved branch current forward-generation method and the genetic algorithm. The optimal scheduling of the distribution network layer is then completed. Finally, the simulation examples are used to compare and verify the validity of the method.展开更多
Multi-agent system (MAS) can provide flexible and intelligent control for micro-grid (MG). In this paper, a new power coordination method of MAS is presented for MG. New way for dispatching controllable generations (...Multi-agent system (MAS) can provide flexible and intelligent control for micro-grid (MG). In this paper, a new power coordination method of MAS is presented for MG. New way for dispatching controllable generations (CGs) and direct cooperation between storages and CGs are designed. Real-time emulations of the coordination, including the usage of both CGs and storages, have been carried out in islanded situation basing on this method, and much higher performance than conventional method is found.展开更多
基金supported by the National Natural Science Foundation of China(No.22002030)Innovational Found for Scientific and Technological Personnel of Hainan Province(No.NHXXRCXM202301)+1 种基金Collaborative Innovation Center of Ecological Civilization,Hainan University(No.XTCX2022STC11)the Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai(No.AMGM2024F23)。
文摘Utilizing interfacial interaction between different components of a heterojunction to induce defect formation may be an interesting approach for improving the catalytic performance.Here,introducing 3 nm CdS clusters(S)on NH_(2)-MIL-125(Ti)nanosheets(NMT-NS)to construct the heterojunction catalysts(Sx/NMT-NS)can induce the generation of abundant defects and Ti^(3+)sites due to the lattice distortion of NMT-NS and the transfer of interfacial charges.These defects and Ti^(3+)sites can chemisorb benzyl alcohol(BZO)molecules through a C–O…Ti coordination while capture and activate O2molecules from air.Furthermore,Z-scheme heterojunction between Cd S clusters and NMT-NS optimizes the transfer and separation of photogenerated electrons-holes,thus accelerating the production of·O_(2)^(-).Therefore,S1.8/NMT-NS achieves a highly efficient conversion of benzylamine(BZA)(>99%)and BZO to N-benzylidene benzylamine(N-BZA)in air atmosphere under visible light,with a selectivity of 99%.Finally,a photocatalytic mechanism involving the activation of reactants molecule and the transfer of photogenerated carriers is propounded at molecular level.
基金Financial support from the National Natural Science Foundation of China(No.21202049)the Recruitment Program of Global Experts(1000 Talents Plan)+1 种基金the Natural Science Foundation of Fujian Province(No.2016J01064)Fujian Hundred Talents Plan and Program of Innovative Research Team of Huaqiao University(No.Z14X0047)are gratefully acknowledged
文摘A Pd（Ⅱ）-catalyzed ortho-olefination of aromatic acetic esters is described which features with an excellent funcitional group tolerance, good yields, mild reaction conditions, good scalability as well as high chemo-and regio-selectivity.
文摘The coordinated control of multiple-sources including wind,photovoltaic(PV)and storage brings new challenges to traditional dispatch and control technologies.This paper firstly introduces a framework of wind,PV and storage co-generation monitoring system.Then,key technologies of co-generation monitoring system including day-ahead optimal dispatching,active power coordinated control and reactive power and voltage control are proposed.The framework and the techniques described in this paper have been applied in the National Wind,Photovoltaic,Storage and Transmission Demonstration Project of China,and their validity have been tested and verified.
基金supported in part by the Fundamental Research Funds for the Central Universities of China(No.PA2021GDSK0083)in part by the State Key Program of National Natural Science of China(No.51637004)in part by the National Key Research and Development Plan“Important Scientific Instruments and Equipment Development”(No.2016YFF0102200)。
文摘In the existing multi-period robust optimization methods for the optimal power flow in radial distribution systems,the capability of distributed generators(DGs)to regulate the reactive power,the operation costs of the regulation equipment,and the current of the shunt capacitor of the cables are not considered.In this paper,a multi-period two-stage robust scheduling strategy that aims to minimize the total cost of the power supply is developed.This strategy considers the time-ofuse price,the capability of the DGs to regulate the active and reactive power,the action costs of the regulation equipment,and the current of the shunt capacitors of the cables in a radial distribution system.Furthermore,the numbers of variables and constraints in the first-stage model remain constant during the iteration to enhance the computation efficiency.To solve the second-stage model,only the model of each period needs to be solved.Then,their objective values are accumulated,revealing that the computation rate using the proposed method is much higher than that of existing methods.The effectiveness of the proposed method is validated by actual 4-bus,IEEE 33-bus,and PG 69-bus distribution systems.
基金supported by Beijing Municipal Science Technology commission research(No.Z171100000317003)
文摘First, a three-tier coordinated scheduling system consisting of a distribution network dispatch layer, a microgrid centralized control layer, and local control layer in the energy internet is proposed. The multi-time scale optimal scheduling of the microgrid based on Model Predictive Control（MPC） is then studied, and the optimized genetic algorithm and the microgrid multi-time rolling optimization strategy are used to optimize the datahead scheduling phase and the intra-day optimization phase. Next, based on the three-tier coordinated scheduling architecture, the operation loss model of the distribution network is solved using the improved branch current forward-generation method and the genetic algorithm. The optimal scheduling of the distribution network layer is then completed. Finally, the simulation examples are used to compare and verify the validity of the method.
文摘Multi-agent system (MAS) can provide flexible and intelligent control for micro-grid (MG). In this paper, a new power coordination method of MAS is presented for MG. New way for dispatching controllable generations (CGs) and direct cooperation between storages and CGs are designed. Real-time emulations of the coordination, including the usage of both CGs and storages, have been carried out in islanded situation basing on this method, and much higher performance than conventional method is found.
