On using distributed energy resources to reshape the dynamics of power systems during transients

This work investigates controlling the operation of distributed energy resources (DERs) in order to reshape the dynamics of the power system during instability periods. Specifically, the output of the DERs is controlled using a linear feedback optimal (LFO) controller for stabilizing the rotor speeds of the synchronous generators after the occurrence of a disturbance in the power grid. Based on optimal linear-quadratic control theory, the proposed LFO controller relies on receiving timely system information to employ fast-acting DERs that are situated near synchronous generators in order to drive the rotor speed of the generators to stability. The performance of the proposed controller is investigated on the 39-bus 10-generator New England test power system. Further, the performance of the LFO distributed controller is investigated in the presence of non-ideal practical measurement, communication, and storage constraints.