An optimal dispatch model based on load aggregator associated with energy hub

Abstract

With the open of demand side, the demand response will increase the flexibility of power system. As an intermediate between electricity market sellers and demand side users, load aggregator (LA) has more choices in the load shedding transactions with a large amount of demand side resources. This paper considers the impact of energy hub (including electricity energy and heat energy) to the trade strategy of load aggregator and proposes the trading framework of load aggregator based on energy hub (EH), then a load aggregator trading model based on transaction cost is established. Through the linear optimization with trading model, the transaction costs of load aggregator are compared whether the energy hub is used or not, and the influence of efficiency of different modules in energy hub on their supply proportion is analysed, and finally the trading strategy of load aggregator is studied when the demand side resources take part in load shedding.