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access icon openaccess Optimal control strategy of load aggregators with demand response

This is an open access article published by the IET under the Creative Commons Attribution -NonCommercial License (http://creativecommons.org/licenses/by-nc/3.0/)
Received 29/08/2018, Accepted 19/09/2018, Published 23/10/2018

This study presents an optimal control strategy for a load aggregator (LA) with demand response. The LA can provide consumers with time-of-use electricity price which could be different with the selling price of electricity by power grid. At the same time, LA has some distributed photovoltaic power generations, several diesel generators and energy storage devices to ensure user reliability and improve benefits. The LA's objective is to maximum its benefits without infringing the interests of consumers. A model of quadratical constraint quadratic programming is established to describe the above issues, and the generator-battery control strategy with demand response (DR) under optimal economic operation of the system is solved by CPLEX. The results show that the proposed management strategy and DR strategy improves the operational economy of the system.

Inspec keywords: pricing; power generation control; secondary cells; distributed power generation; photovoltaic power systems; energy storage; quadratic programming; optimal control; power grids

Other keywords: demand response; load aggregator; energy storage devices; distributed photovoltaic power generations; optimal economic operation; power grid; quadratical constraint quadratic programming; generator-battery control strategy; DR strategy; management strategy; diesel generators; consumers; optimal control strategy; time-of-use electricity price

Subjects: Optimisation techniques; Power system management, operation and economics; Optimisation techniques

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