Frequency Response Analysis for Active Support Energy Storage Converter Based on Inertia and Damping Regulation

Energy storage system with active support control is critical for new energy power generation to develop frequency regulation function in power system. This paper analysis frequency response characteristics of energy storage converter by adjusting its inertia and damping parameters to determine the active support function. First, energy storage converter model with active support control strategy is developed to investigate the influence of inertia and damping control parameters on converter disturbance frequency. Then, the coupling relationship between inertia, damping and its frequency regulation characteristics is derived from system state equations. The active support characteristic curve of energy storage system is plotted under MATLAB software platform to verify the proposed frequency response characteristics analysis method.