The decreasing cost of solar photovoltaics(PVs)and battery storage systems is driving their adoption in the residential distribution system,where more consumers are becoming prosumers.Accompanying this trend is the po...The decreasing cost of solar photovoltaics(PVs)and battery storage systems is driving their adoption in the residential distribution system,where more consumers are becoming prosumers.Accompanying this trend is the potential roll-out of home energy management systems(HEMSs),which provide a means for prosumers to respond to externalities such as energy price,weather,and energy demands.However,the economic operation of prosumers can affect grid security,especially when energy prices are extremely low or high.Therefore,it is paramount to design a framework that can accommodate the interests of the key stakeholders in distribution systems—namely,the network operator,prosumer,and aggregator.In this paper,a novel transactive energy(TE)-based operational framework is proposed.Under this frame-work,aggregators interact with the distribution grid operator through a negotiation process to ensure network security,while at the lower level,prosumers submit their schedule to the aggregator through the HEMS.If network security is at risk,aggregators will send an additional price component representing the cost of security(CoS)to the prosumer to stimulate further response.The simulation results show that the proposed framework can effectively ensure the economic operation of aggregators and prosumers in distribution systems while maintaining grid security.展开更多
Future electric power systems will face new operational challenges due to the high penetration of distributed energy resources(DERs).In Denmark,distribution system operator(DSO)expects a significant congestion increas...Future electric power systems will face new operational challenges due to the high penetration of distributed energy resources(DERs).In Denmark,distribution system operator(DSO)expects a significant congestion increased in distribution grids.In order to manage these congestions and mobilize the DERs as economically efficient as possible in the future distribution grid,the brand new notion of flexibility clearing house(FLECH)is proposed in this paper.With the aggregator-based offers,the proposed FLECH market has the ability to promote small scale DERs(upto 5 MW)for actively participating in trading flexibility services,which are stipulated accommodating the various requirements of DSO.Accordingly,the trading setups and processes of the FLECH market are also illustrated in detail.A quantitative example is utilized to illustrate the formulation and classification of flexibility services provided by the DERs in the proposed FLECH market.展开更多
基金supported by PVST project, funded under the Danish Energiteknologiske Udviklings-og Demonstrationsprogram (EUDP) programme (64017-0041)the State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (LAPS21)
文摘The decreasing cost of solar photovoltaics(PVs)and battery storage systems is driving their adoption in the residential distribution system,where more consumers are becoming prosumers.Accompanying this trend is the potential roll-out of home energy management systems(HEMSs),which provide a means for prosumers to respond to externalities such as energy price,weather,and energy demands.However,the economic operation of prosumers can affect grid security,especially when energy prices are extremely low or high.Therefore,it is paramount to design a framework that can accommodate the interests of the key stakeholders in distribution systems—namely,the network operator,prosumer,and aggregator.In this paper,a novel transactive energy(TE)-based operational framework is proposed.Under this frame-work,aggregators interact with the distribution grid operator through a negotiation process to ensure network security,while at the lower level,prosumers submit their schedule to the aggregator through the HEMS.If network security is at risk,aggregators will send an additional price component representing the cost of security(CoS)to the prosumer to stimulate further response.The simulation results show that the proposed framework can effectively ensure the economic operation of aggregators and prosumers in distribution systems while maintaining grid security.
基金Acknow ledgments The authors grate fully acknowledge the finan-cial supports of Danish national project iPower and the great contri-butions of Lars Henrik Hansen,Poul Brath and Peder Dybdal Cajar from DONG Energy.
文摘Future electric power systems will face new operational challenges due to the high penetration of distributed energy resources(DERs).In Denmark,distribution system operator(DSO)expects a significant congestion increased in distribution grids.In order to manage these congestions and mobilize the DERs as economically efficient as possible in the future distribution grid,the brand new notion of flexibility clearing house(FLECH)is proposed in this paper.With the aggregator-based offers,the proposed FLECH market has the ability to promote small scale DERs(upto 5 MW)for actively participating in trading flexibility services,which are stipulated accommodating the various requirements of DSO.Accordingly,the trading setups and processes of the FLECH market are also illustrated in detail.A quantitative example is utilized to illustrate the formulation and classification of flexibility services provided by the DERs in the proposed FLECH market.
