Unit Management of a BESS-Integrated Hydro Power Plant for Spinning Reserve Enhancement

摘要

Owing to its fast response, the hydro power plant is normally assigned to provide spinning reserve for the power system. Despite of its large capacity, minimum generation constraint and lack of management of multi-unit generations result in limited spinning reserve. This paper solves this problem by integrating a battery energy storage system with the hydro power plant and proposes a unit management algorithm to cooperatively manage the multi-unit generation. As a result, the hydro power plant can virtually provide any demanded generation, and its spinning reserve is increased significantly compared to the traditional operation. A case study on Rajjaprabha hydro power plant in Thailand is conducted to confirm feasibility of the proposed concept.