Distributed coordinated management for multiple distributed energy resources optimal operation with security constrains

Abstract

Grid connection of large-scale distributed energy resources (DERs) brings not only many benefits to the power systems including the improvement of system reliability and security but also challenges in their control and operation. Aiming at overcoming the disadvantages of existing centralized methods for solving the corrective security-constrained DC optimal power flow (OPF) problem in transmission systems, this paper presents a fully distributed control algorithm which requires only variables in adjacent buses of the faulty line to update the control signals of DERs so as to allow them to respond quickly to maintain the dynamic power balance in grid after a line contingency. A case study on a modified 6-bus system shows the validity and effectiveness of the proposed algorithm.