Extending the Reach of Traditional Frequency Control for Fast Responses

Abstract

This paper investigates the role of grid-level battery energy storage in delivering measured reserve to supplant traditional synchronous units for frequency response support in the context of high renewable generation penetration. Dynamic simulation is performed on a modified 39-Bus New England model to assess and evaluate the impact of embedded storage for fast frequency support. The paper proposes a response strategy for sudden changes in frequency with storage acting in the dual role of limiting frequency nadir excursion while delivering synthetic inertia to the grid.